/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/weaver-benchmarks/generated/test/easy10.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-87fd7473a0bda1db0ad7f77f2116346063730f21-87fd747 [2021-08-21 13:26:03,778 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-21 13:26:03,779 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-21 13:26:03,811 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-21 13:26:03,811 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-21 13:26:03,814 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-21 13:26:03,815 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-21 13:26:03,820 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-21 13:26:03,822 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-21 13:26:03,826 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-21 13:26:03,827 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-21 13:26:03,828 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-21 13:26:03,828 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-21 13:26:03,829 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-21 13:26:03,831 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-21 13:26:03,836 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-21 13:26:03,837 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-21 13:26:03,838 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-21 13:26:03,840 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-21 13:26:03,842 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-21 13:26:03,843 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-21 13:26:03,845 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-21 13:26:03,845 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-21 13:26:03,846 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-21 13:26:03,847 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-21 13:26:03,847 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-21 13:26:03,847 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-21 13:26:03,848 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-21 13:26:03,848 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-21 13:26:03,849 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-21 13:26:03,849 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-21 13:26:03,849 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-21 13:26:03,850 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-21 13:26:03,850 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-21 13:26:03,850 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-21 13:26:03,851 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-21 13:26:03,851 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-21 13:26:03,851 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-21 13:26:03,851 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-21 13:26:03,852 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-21 13:26:03,852 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-21 13:26:03,856 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 [2021-08-21 13:26:03,887 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-21 13:26:03,887 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-21 13:26:03,887 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-21 13:26:03,887 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-21 13:26:03,889 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-21 13:26:03,889 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-21 13:26:03,890 INFO L138 SettingsManager]: * Use SBE=true [2021-08-21 13:26:03,890 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-21 13:26:03,890 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-21 13:26:03,890 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-21 13:26:03,891 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-21 13:26:03,891 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-21 13:26:03,891 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-21 13:26:03,891 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-21 13:26:03,891 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-21 13:26:03,891 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-21 13:26:03,891 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-21 13:26:03,891 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-21 13:26:03,892 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-21 13:26:03,892 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-21 13:26:03,892 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-21 13:26:03,892 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-08-21 13:26:03,892 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-21 13:26:03,892 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-21 13:26:03,892 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-21 13:26:03,892 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-21 13:26:03,892 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-21 13:26:03,892 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-21 13:26:03,893 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-21 13:26:03,893 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-08-21 13:26:03,893 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-21 13:26:03,893 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-08-21 13:26:04,158 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-21 13:26:04,179 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-21 13:26:04,180 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-21 13:26:04,181 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-08-21 13:26:04,182 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-08-21 13:26:04,182 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/test/easy10.wvr.bpl [2021-08-21 13:26:04,183 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/test/easy10.wvr.bpl' [2021-08-21 13:26:04,213 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-21 13:26:04,214 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-08-21 13:26:04,215 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-21 13:26:04,215 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-21 13:26:04,215 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-21 13:26:04,223 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "easy10.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.08 01:26:04" (1/1) ... [2021-08-21 13:26:04,228 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "easy10.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.08 01:26:04" (1/1) ... [2021-08-21 13:26:04,238 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-21 13:26:04,239 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-21 13:26:04,239 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-21 13:26:04,239 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-21 13:26:04,244 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "easy10.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.08 01:26:04" (1/1) ... [2021-08-21 13:26:04,244 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "easy10.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.08 01:26:04" (1/1) ... [2021-08-21 13:26:04,245 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "easy10.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.08 01:26:04" (1/1) ... [2021-08-21 13:26:04,245 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "easy10.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.08 01:26:04" (1/1) ... [2021-08-21 13:26:04,247 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "easy10.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.08 01:26:04" (1/1) ... [2021-08-21 13:26:04,247 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "easy10.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.08 01:26:04" (1/1) ... [2021-08-21 13:26:04,248 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "easy10.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.08 01:26:04" (1/1) ... [2021-08-21 13:26:04,248 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-21 13:26:04,249 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-21 13:26:04,249 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-21 13:26:04,249 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-21 13:26:04,250 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "easy10.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.08 01:26:04" (1/1) ... [2021-08-21 13:26:04,254 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-21 13:26:04,259 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-21 13:26:04,268 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) [2021-08-21 13:26:04,317 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 [2021-08-21 13:26:04,336 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-08-21 13:26:04,337 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-08-21 13:26:04,337 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-08-21 13:26:04,337 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-08-21 13:26:04,337 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-08-21 13:26:04,337 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-08-21 13:26:04,337 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-08-21 13:26:04,337 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-21 13:26:04,337 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-21 13:26:04,337 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2021-08-21 13:26:04,338 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-08-21 13:26:04,338 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-08-21 13:26:04,338 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread4 given in one single declaration [2021-08-21 13:26:04,338 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2021-08-21 13:26:04,338 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2021-08-21 13:26:04,339 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-08-21 13:26:04,464 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-21 13:26:04,464 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-08-21 13:26:04,465 INFO L202 PluginConnector]: Adding new model easy10.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 01:26:04 BoogieIcfgContainer [2021-08-21 13:26:04,465 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-21 13:26:04,467 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-21 13:26:04,467 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-21 13:26:04,468 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-21 13:26:04,468 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "easy10.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.08 01:26:04" (1/2) ... [2021-08-21 13:26:04,469 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@699eec12 and model type easy10.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 01:26:04, skipping insertion in model container [2021-08-21 13:26:04,469 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "easy10.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 01:26:04" (2/2) ... [2021-08-21 13:26:04,470 INFO L111 eAbstractionObserver]: Analyzing ICFG easy10.wvr.bpl [2021-08-21 13:26:04,473 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-08-21 13:26:04,473 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-21 13:26:04,473 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-08-21 13:26:04,473 INFO L516 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-08-21 13:26:04,509 INFO L148 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2021-08-21 13:26:04,534 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-21 13:26:04,538 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, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-08-21 13:26:04,538 INFO L340 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-08-21 13:26:04,545 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 58 places, 45 transitions, 122 flow [2021-08-21 13:26:04,784 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 5269 states, 5268 states have (on average 3.4994305239179955) internal successors, (18435), 5268 states have internal predecessors, (18435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:26:04,795 INFO L276 IsEmpty]: Start isEmpty. Operand has 5269 states, 5268 states have (on average 3.4994305239179955) internal successors, (18435), 5268 states have internal predecessors, (18435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:26:04,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:26:04,855 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:26:04,856 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:26:04,856 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:26:04,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:26:04,860 INFO L82 PathProgramCache]: Analyzing trace with hash -748934232, now seen corresponding path program 1 times [2021-08-21 13:26:04,865 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:26:04,865 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [437492489] [2021-08-21 13:26:04,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:26:04,865 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:26:04,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:26:04,950 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:26:04,950 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:26:04,950 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [437492489] [2021-08-21 13:26:04,951 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [437492489] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:26:04,951 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:26:04,951 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-08-21 13:26:04,952 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [598982197] [2021-08-21 13:26:04,955 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-21 13:26:04,955 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:26:04,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-21 13:26:04,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-21 13:26:04,973 INFO L87 Difference]: Start difference. First operand has 5269 states, 5268 states have (on average 3.4994305239179955) internal successors, (18435), 5268 states have internal predecessors, (18435), 0 states have call successors, (0), 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 13.0) internal successors, (39), 2 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:26:05,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:26:05,040 INFO L93 Difference]: Finished difference Result 4197 states and 14419 transitions. [2021-08-21 13:26:05,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-21 13:26:05,042 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 2 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:26:05,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:26:05,073 INFO L225 Difference]: With dead ends: 4197 [2021-08-21 13:26:05,073 INFO L226 Difference]: Without dead ends: 4197 [2021-08-21 13:26:05,075 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.1ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-21 13:26:05,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4197 states. [2021-08-21 13:26:05,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4197 to 4197. [2021-08-21 13:26:05,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4197 states, 4196 states have (on average 3.436367969494757) internal successors, (14419), 4196 states have internal predecessors, (14419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:26:05,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4197 states to 4197 states and 14419 transitions. [2021-08-21 13:26:05,249 INFO L78 Accepts]: Start accepts. Automaton has 4197 states and 14419 transitions. Word has length 39 [2021-08-21 13:26:05,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:26:05,249 INFO L470 AbstractCegarLoop]: Abstraction has 4197 states and 14419 transitions. [2021-08-21 13:26:05,250 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 2 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:26:05,250 INFO L276 IsEmpty]: Start isEmpty. Operand 4197 states and 14419 transitions. [2021-08-21 13:26:05,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:26:05,259 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:26:05,260 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:26:05,260 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-21 13:26:05,260 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:26:05,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:26:05,261 INFO L82 PathProgramCache]: Analyzing trace with hash -2066982596, now seen corresponding path program 2 times [2021-08-21 13:26:05,261 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:26:05,261 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [999991780] [2021-08-21 13:26:05,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:26:05,261 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:26:05,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:26:05,283 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:26:05,284 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:26:05,284 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [999991780] [2021-08-21 13:26:05,284 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [999991780] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:26:05,284 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:26:05,284 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-08-21 13:26:05,284 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643830215] [2021-08-21 13:26:05,285 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-21 13:26:05,285 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:26:05,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-21 13:26:05,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-21 13:26:05,286 INFO L87 Difference]: Start difference. First operand 4197 states and 14419 transitions. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 2 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:26:05,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:26:05,308 INFO L93 Difference]: Finished difference Result 3290 states and 11077 transitions. [2021-08-21 13:26:05,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-21 13:26:05,309 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 2 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:26:05,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:26:05,324 INFO L225 Difference]: With dead ends: 3290 [2021-08-21 13:26:05,324 INFO L226 Difference]: Without dead ends: 3290 [2021-08-21 13:26:05,325 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-21 13:26:05,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3290 states. [2021-08-21 13:26:05,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3290 to 3290. [2021-08-21 13:26:05,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3290 states, 3289 states have (on average 3.367892976588629) internal successors, (11077), 3289 states have internal predecessors, (11077), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:26:05,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3290 states to 3290 states and 11077 transitions. [2021-08-21 13:26:05,509 INFO L78 Accepts]: Start accepts. Automaton has 3290 states and 11077 transitions. Word has length 39 [2021-08-21 13:26:05,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:26:05,509 INFO L470 AbstractCegarLoop]: Abstraction has 3290 states and 11077 transitions. [2021-08-21 13:26:05,510 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 2 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:26:05,510 INFO L276 IsEmpty]: Start isEmpty. Operand 3290 states and 11077 transitions. [2021-08-21 13:26:05,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:26:05,520 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:26:05,520 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:26:05,520 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-08-21 13:26:05,520 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:26:05,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:26:05,521 INFO L82 PathProgramCache]: Analyzing trace with hash -907261672, now seen corresponding path program 3 times [2021-08-21 13:26:05,521 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:26:05,522 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1714696432] [2021-08-21 13:26:05,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:26:05,522 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:26:05,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:26:05,977 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:26:05,977 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:26:05,978 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1714696432] [2021-08-21 13:26:05,978 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1714696432] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:26:05,978 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:26:05,978 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-08-21 13:26:05,978 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377396184] [2021-08-21 13:26:05,978 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-08-21 13:26:05,978 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:26:05,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-08-21 13:26:05,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2021-08-21 13:26:05,979 INFO L87 Difference]: Start difference. First operand 3290 states and 11077 transitions. Second operand has 15 states, 15 states have (on average 2.6) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:26:07,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:26:07,069 INFO L93 Difference]: Finished difference Result 3661 states and 12223 transitions. [2021-08-21 13:26:07,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-08-21 13:26:07,069 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.6) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:26:07,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:26:07,087 INFO L225 Difference]: With dead ends: 3661 [2021-08-21 13:26:07,087 INFO L226 Difference]: Without dead ends: 3594 [2021-08-21 13:26:07,087 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 266 ImplicationChecksByTransitivity, 659.5ms TimeCoverageRelationStatistics Valid=157, Invalid=1325, Unknown=0, NotChecked=0, Total=1482 [2021-08-21 13:26:07,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3594 states. [2021-08-21 13:26:07,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3594 to 3418. [2021-08-21 13:26:07,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3418 states, 3417 states have (on average 3.359964881474978) internal successors, (11481), 3417 states have internal predecessors, (11481), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:26:07,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3418 states to 3418 states and 11481 transitions. [2021-08-21 13:26:07,172 INFO L78 Accepts]: Start accepts. Automaton has 3418 states and 11481 transitions. Word has length 39 [2021-08-21 13:26:07,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:26:07,172 INFO L470 AbstractCegarLoop]: Abstraction has 3418 states and 11481 transitions. [2021-08-21 13:26:07,172 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.6) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:26:07,172 INFO L276 IsEmpty]: Start isEmpty. Operand 3418 states and 11481 transitions. [2021-08-21 13:26:07,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:26:07,181 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:26:07,181 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:26:07,181 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-08-21 13:26:07,182 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:26:07,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:26:07,182 INFO L82 PathProgramCache]: Analyzing trace with hash 1668089654, now seen corresponding path program 4 times [2021-08-21 13:26:07,182 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:26:07,182 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1138447667] [2021-08-21 13:26:07,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:26:07,183 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:26:07,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:26:07,542 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:26:07,543 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:26:07,543 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1138447667] [2021-08-21 13:26:07,543 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1138447667] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:26:07,543 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:26:07,543 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-08-21 13:26:07,543 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [798134970] [2021-08-21 13:26:07,543 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-08-21 13:26:07,544 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:26:07,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-08-21 13:26:07,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2021-08-21 13:26:07,544 INFO L87 Difference]: Start difference. First operand 3418 states and 11481 transitions. Second operand has 15 states, 15 states have (on average 2.6) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:26:08,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:26:08,847 INFO L93 Difference]: Finished difference Result 3717 states and 12358 transitions. [2021-08-21 13:26:08,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-08-21 13:26:08,847 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.6) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:26:08,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:26:08,864 INFO L225 Difference]: With dead ends: 3717 [2021-08-21 13:26:08,864 INFO L226 Difference]: Without dead ends: 3674 [2021-08-21 13:26:08,865 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 473 ImplicationChecksByTransitivity, 835.2ms TimeCoverageRelationStatistics Valid=221, Invalid=1941, Unknown=0, NotChecked=0, Total=2162 [2021-08-21 13:26:08,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3674 states. [2021-08-21 13:26:08,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3674 to 3424. [2021-08-21 13:26:08,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3424 states, 3423 states have (on average 3.357873210633947) internal successors, (11494), 3423 states have internal predecessors, (11494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:26:08,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3424 states to 3424 states and 11494 transitions. [2021-08-21 13:26:08,943 INFO L78 Accepts]: Start accepts. Automaton has 3424 states and 11494 transitions. Word has length 39 [2021-08-21 13:26:08,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:26:08,943 INFO L470 AbstractCegarLoop]: Abstraction has 3424 states and 11494 transitions. [2021-08-21 13:26:08,943 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.6) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:26:08,943 INFO L276 IsEmpty]: Start isEmpty. Operand 3424 states and 11494 transitions. [2021-08-21 13:26:08,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:26:08,951 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:26:08,951 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:26:08,951 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-08-21 13:26:08,951 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:26:08,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:26:08,952 INFO L82 PathProgramCache]: Analyzing trace with hash -112508648, now seen corresponding path program 5 times [2021-08-21 13:26:08,952 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:26:08,952 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1787732040] [2021-08-21 13:26:08,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:26:08,952 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:26:08,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:26:09,251 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:26:09,251 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:26:09,251 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1787732040] [2021-08-21 13:26:09,252 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1787732040] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:26:09,252 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:26:09,252 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-08-21 13:26:09,252 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442644934] [2021-08-21 13:26:09,252 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-08-21 13:26:09,252 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:26:09,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-08-21 13:26:09,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2021-08-21 13:26:09,253 INFO L87 Difference]: Start difference. First operand 3424 states and 11494 transitions. Second operand has 15 states, 15 states have (on average 2.6) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:26:10,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:26:10,567 INFO L93 Difference]: Finished difference Result 3672 states and 12254 transitions. [2021-08-21 13:26:10,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-08-21 13:26:10,567 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.6) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:26:10,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:26:10,578 INFO L225 Difference]: With dead ends: 3672 [2021-08-21 13:26:10,578 INFO L226 Difference]: Without dead ends: 3608 [2021-08-21 13:26:10,579 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 411 ImplicationChecksByTransitivity, 857.0ms TimeCoverageRelationStatistics Valid=209, Invalid=1771, Unknown=0, NotChecked=0, Total=1980 [2021-08-21 13:26:10,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3608 states. [2021-08-21 13:26:10,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3608 to 3406. [2021-08-21 13:26:10,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3406 states, 3405 states have (on average 3.3606461086637296) internal successors, (11443), 3405 states have internal predecessors, (11443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:26:10,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3406 states to 3406 states and 11443 transitions. [2021-08-21 13:26:10,646 INFO L78 Accepts]: Start accepts. Automaton has 3406 states and 11443 transitions. Word has length 39 [2021-08-21 13:26:10,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:26:10,646 INFO L470 AbstractCegarLoop]: Abstraction has 3406 states and 11443 transitions. [2021-08-21 13:26:10,646 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.6) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:26:10,646 INFO L276 IsEmpty]: Start isEmpty. Operand 3406 states and 11443 transitions. [2021-08-21 13:26:10,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:26:10,652 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:26:10,653 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:26:10,653 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-08-21 13:26:10,653 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:26:10,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:26:10,653 INFO L82 PathProgramCache]: Analyzing trace with hash -521324264, now seen corresponding path program 6 times [2021-08-21 13:26:10,653 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:26:10,654 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1058428747] [2021-08-21 13:26:10,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:26:10,654 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:26:10,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:26:10,926 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:26:10,927 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:26:10,927 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1058428747] [2021-08-21 13:26:10,927 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1058428747] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:26:10,927 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:26:10,927 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-08-21 13:26:10,927 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768754831] [2021-08-21 13:26:10,927 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-08-21 13:26:10,927 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:26:10,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-08-21 13:26:10,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2021-08-21 13:26:10,928 INFO L87 Difference]: Start difference. First operand 3406 states and 11443 transitions. Second operand has 15 states, 15 states have (on average 2.6) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:26:12,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:26:12,282 INFO L93 Difference]: Finished difference Result 3717 states and 12377 transitions. [2021-08-21 13:26:12,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-08-21 13:26:12,282 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.6) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:26:12,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:26:12,292 INFO L225 Difference]: With dead ends: 3717 [2021-08-21 13:26:12,292 INFO L226 Difference]: Without dead ends: 3587 [2021-08-21 13:26:12,292 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 440 ImplicationChecksByTransitivity, 840.8ms TimeCoverageRelationStatistics Valid=210, Invalid=1860, Unknown=0, NotChecked=0, Total=2070 [2021-08-21 13:26:12,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3587 states. [2021-08-21 13:26:12,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3587 to 3382. [2021-08-21 13:26:12,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3382 states, 3381 states have (on average 3.3632061520260277) internal successors, (11371), 3381 states have internal predecessors, (11371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:26:12,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3382 states to 3382 states and 11371 transitions. [2021-08-21 13:26:12,351 INFO L78 Accepts]: Start accepts. Automaton has 3382 states and 11371 transitions. Word has length 39 [2021-08-21 13:26:12,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:26:12,351 INFO L470 AbstractCegarLoop]: Abstraction has 3382 states and 11371 transitions. [2021-08-21 13:26:12,351 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.6) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:26:12,352 INFO L276 IsEmpty]: Start isEmpty. Operand 3382 states and 11371 transitions. [2021-08-21 13:26:12,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:26:12,358 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:26:12,358 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:26:12,358 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-08-21 13:26:12,358 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:26:12,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:26:12,358 INFO L82 PathProgramCache]: Analyzing trace with hash 1316627588, now seen corresponding path program 7 times [2021-08-21 13:26:12,358 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:26:12,359 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [233390318] [2021-08-21 13:26:12,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:26:12,359 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:26:12,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:26:12,651 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:26:12,651 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:26:12,651 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [233390318] [2021-08-21 13:26:12,651 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [233390318] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:26:12,651 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:26:12,651 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-08-21 13:26:12,651 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [437116264] [2021-08-21 13:26:12,652 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-08-21 13:26:12,652 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:26:12,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-08-21 13:26:12,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-08-21 13:26:12,652 INFO L87 Difference]: Start difference. First operand 3382 states and 11371 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:26:13,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:26:13,714 INFO L93 Difference]: Finished difference Result 3691 states and 12292 transitions. [2021-08-21 13:26:13,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-08-21 13:26:13,715 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:26:13,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:26:13,724 INFO L225 Difference]: With dead ends: 3691 [2021-08-21 13:26:13,724 INFO L226 Difference]: Without dead ends: 3624 [2021-08-21 13:26:13,725 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 337 ImplicationChecksByTransitivity, 671.9ms TimeCoverageRelationStatistics Valid=189, Invalid=1617, Unknown=0, NotChecked=0, Total=1806 [2021-08-21 13:26:13,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3624 states. [2021-08-21 13:26:13,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3624 to 3398. [2021-08-21 13:26:13,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3398 states, 3397 states have (on average 3.3591404180158966) internal successors, (11411), 3397 states have internal predecessors, (11411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:26:13,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3398 states to 3398 states and 11411 transitions. [2021-08-21 13:26:13,793 INFO L78 Accepts]: Start accepts. Automaton has 3398 states and 11411 transitions. Word has length 39 [2021-08-21 13:26:13,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:26:13,794 INFO L470 AbstractCegarLoop]: Abstraction has 3398 states and 11411 transitions. [2021-08-21 13:26:13,794 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:26:13,794 INFO L276 IsEmpty]: Start isEmpty. Operand 3398 states and 11411 transitions. [2021-08-21 13:26:13,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:26:13,801 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:26:13,801 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:26:13,801 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-08-21 13:26:13,801 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:26:13,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:26:13,802 INFO L82 PathProgramCache]: Analyzing trace with hash -402988382, now seen corresponding path program 8 times [2021-08-21 13:26:13,802 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:26:13,802 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [20636365] [2021-08-21 13:26:13,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:26:13,802 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:26:13,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:26:14,107 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:26:14,108 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:26:14,108 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [20636365] [2021-08-21 13:26:14,108 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [20636365] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:26:14,108 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:26:14,108 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-08-21 13:26:14,108 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1133955332] [2021-08-21 13:26:14,109 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-08-21 13:26:14,109 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:26:14,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-08-21 13:26:14,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-08-21 13:26:14,109 INFO L87 Difference]: Start difference. First operand 3398 states and 11411 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:26:15,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:26:15,681 INFO L93 Difference]: Finished difference Result 3780 states and 12493 transitions. [2021-08-21 13:26:15,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-08-21 13:26:15,682 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:26:15,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:26:15,717 INFO L225 Difference]: With dead ends: 3780 [2021-08-21 13:26:15,717 INFO L226 Difference]: Without dead ends: 3737 [2021-08-21 13:26:15,718 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 600 ImplicationChecksByTransitivity, 1033.0ms TimeCoverageRelationStatistics Valid=261, Invalid=2391, Unknown=0, NotChecked=0, Total=2652 [2021-08-21 13:26:15,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3737 states. [2021-08-21 13:26:15,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3737 to 3404. [2021-08-21 13:26:15,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3404 states, 3403 states have (on average 3.3570379077284747) internal successors, (11424), 3403 states have internal predecessors, (11424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:26:15,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3404 states to 3404 states and 11424 transitions. [2021-08-21 13:26:15,859 INFO L78 Accepts]: Start accepts. Automaton has 3404 states and 11424 transitions. Word has length 39 [2021-08-21 13:26:15,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:26:15,860 INFO L470 AbstractCegarLoop]: Abstraction has 3404 states and 11424 transitions. [2021-08-21 13:26:15,860 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:26:15,860 INFO L276 IsEmpty]: Start isEmpty. Operand 3404 states and 11424 transitions. [2021-08-21 13:26:15,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:26:15,882 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:26:15,882 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:26:15,882 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-08-21 13:26:15,882 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:26:15,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:26:15,883 INFO L82 PathProgramCache]: Analyzing trace with hash 2111380612, now seen corresponding path program 9 times [2021-08-21 13:26:15,883 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:26:15,883 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1553869810] [2021-08-21 13:26:15,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:26:15,883 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:26:15,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:26:16,252 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:26:16,252 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:26:16,252 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1553869810] [2021-08-21 13:26:16,252 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1553869810] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:26:16,252 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:26:16,252 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-08-21 13:26:16,252 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1305393947] [2021-08-21 13:26:16,253 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-08-21 13:26:16,253 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:26:16,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-08-21 13:26:16,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-08-21 13:26:16,253 INFO L87 Difference]: Start difference. First operand 3404 states and 11424 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:26:17,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:26:17,613 INFO L93 Difference]: Finished difference Result 3735 states and 12389 transitions. [2021-08-21 13:26:17,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-08-21 13:26:17,613 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:26:17,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:26:17,623 INFO L225 Difference]: With dead ends: 3735 [2021-08-21 13:26:17,623 INFO L226 Difference]: Without dead ends: 3671 [2021-08-21 13:26:17,624 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 566 ImplicationChecksByTransitivity, 915.5ms TimeCoverageRelationStatistics Valid=250, Invalid=2300, Unknown=0, NotChecked=0, Total=2550 [2021-08-21 13:26:17,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3671 states. [2021-08-21 13:26:17,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3671 to 3386. [2021-08-21 13:26:17,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3386 states, 3385 states have (on average 3.3621861152141803) internal successors, (11381), 3385 states have internal predecessors, (11381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:26:17,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3386 states to 3386 states and 11381 transitions. [2021-08-21 13:26:17,687 INFO L78 Accepts]: Start accepts. Automaton has 3386 states and 11381 transitions. Word has length 39 [2021-08-21 13:26:17,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:26:17,689 INFO L470 AbstractCegarLoop]: Abstraction has 3386 states and 11381 transitions. [2021-08-21 13:26:17,690 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:26:17,691 INFO L276 IsEmpty]: Start isEmpty. Operand 3386 states and 11381 transitions. [2021-08-21 13:26:17,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:26:17,697 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:26:17,697 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:26:17,697 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-08-21 13:26:17,697 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:26:17,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:26:17,697 INFO L82 PathProgramCache]: Analyzing trace with hash -1563152284, now seen corresponding path program 10 times [2021-08-21 13:26:17,698 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:26:17,698 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [238755758] [2021-08-21 13:26:17,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:26:17,698 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:26:17,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:26:18,003 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:26:18,003 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:26:18,003 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [238755758] [2021-08-21 13:26:18,003 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [238755758] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:26:18,004 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:26:18,004 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-08-21 13:26:18,004 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436792355] [2021-08-21 13:26:18,005 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-08-21 13:26:18,005 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:26:18,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-08-21 13:26:18,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-08-21 13:26:18,005 INFO L87 Difference]: Start difference. First operand 3386 states and 11381 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:26:18,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:26:18,971 INFO L93 Difference]: Finished difference Result 3643 states and 12154 transitions. [2021-08-21 13:26:18,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-08-21 13:26:18,971 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:26:18,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:26:18,979 INFO L225 Difference]: With dead ends: 3643 [2021-08-21 13:26:18,980 INFO L226 Difference]: Without dead ends: 3576 [2021-08-21 13:26:18,980 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 310 ImplicationChecksByTransitivity, 638.0ms TimeCoverageRelationStatistics Valid=176, Invalid=1546, Unknown=0, NotChecked=0, Total=1722 [2021-08-21 13:26:18,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3576 states. [2021-08-21 13:26:19,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3576 to 3394. [2021-08-21 13:26:19,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3394 states, 3393 states have (on average 3.358974358974359) internal successors, (11397), 3393 states have internal predecessors, (11397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:26:19,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3394 states to 3394 states and 11397 transitions. [2021-08-21 13:26:19,035 INFO L78 Accepts]: Start accepts. Automaton has 3394 states and 11397 transitions. Word has length 39 [2021-08-21 13:26:19,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:26:19,035 INFO L470 AbstractCegarLoop]: Abstraction has 3394 states and 11397 transitions. [2021-08-21 13:26:19,035 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:26:19,035 INFO L276 IsEmpty]: Start isEmpty. Operand 3394 states and 11397 transitions. [2021-08-21 13:26:19,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:26:19,041 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:26:19,041 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:26:19,041 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-08-21 13:26:19,041 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:26:19,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:26:19,042 INFO L82 PathProgramCache]: Analyzing trace with hash -1693747132, now seen corresponding path program 11 times [2021-08-21 13:26:19,043 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:26:19,043 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2090364510] [2021-08-21 13:26:19,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:26:19,043 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:26:19,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:26:19,323 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:26:19,323 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:26:19,323 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2090364510] [2021-08-21 13:26:19,323 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2090364510] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:26:19,323 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:26:19,323 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-08-21 13:26:19,323 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196132886] [2021-08-21 13:26:19,324 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-08-21 13:26:19,324 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:26:19,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-08-21 13:26:19,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-08-21 13:26:19,325 INFO L87 Difference]: Start difference. First operand 3394 states and 11397 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:26:20,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:26:20,387 INFO L93 Difference]: Finished difference Result 3631 states and 12114 transitions. [2021-08-21 13:26:20,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-08-21 13:26:20,388 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:26:20,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:26:20,396 INFO L225 Difference]: With dead ends: 3631 [2021-08-21 13:26:20,396 INFO L226 Difference]: Without dead ends: 3568 [2021-08-21 13:26:20,397 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 335 ImplicationChecksByTransitivity, 669.9ms TimeCoverageRelationStatistics Valid=182, Invalid=1624, Unknown=0, NotChecked=0, Total=1806 [2021-08-21 13:26:20,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3568 states. [2021-08-21 13:26:20,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3568 to 3386. [2021-08-21 13:26:20,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3386 states, 3385 states have (on average 3.3610044313146235) internal successors, (11377), 3385 states have internal predecessors, (11377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:26:20,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3386 states to 3386 states and 11377 transitions. [2021-08-21 13:26:20,474 INFO L78 Accepts]: Start accepts. Automaton has 3386 states and 11377 transitions. Word has length 39 [2021-08-21 13:26:20,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:26:20,475 INFO L470 AbstractCegarLoop]: Abstraction has 3386 states and 11377 transitions. [2021-08-21 13:26:20,475 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:26:20,475 INFO L276 IsEmpty]: Start isEmpty. Operand 3386 states and 11377 transitions. [2021-08-21 13:26:20,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:26:20,480 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:26:20,480 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:26:20,480 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-08-21 13:26:20,480 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:26:20,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:26:20,481 INFO L82 PathProgramCache]: Analyzing trace with hash -1829425724, now seen corresponding path program 12 times [2021-08-21 13:26:20,481 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:26:20,481 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [516266764] [2021-08-21 13:26:20,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:26:20,481 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:26:20,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:26:20,774 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:26:20,775 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:26:20,775 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [516266764] [2021-08-21 13:26:20,775 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [516266764] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:26:20,775 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:26:20,775 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-08-21 13:26:20,777 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502487984] [2021-08-21 13:26:20,777 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-08-21 13:26:20,777 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:26:20,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-08-21 13:26:20,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-08-21 13:26:20,780 INFO L87 Difference]: Start difference. First operand 3386 states and 11377 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:26:22,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:26:22,171 INFO L93 Difference]: Finished difference Result 3769 states and 12461 transitions. [2021-08-21 13:26:22,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-08-21 13:26:22,172 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:26:22,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:26:22,181 INFO L225 Difference]: With dead ends: 3769 [2021-08-21 13:26:22,181 INFO L226 Difference]: Without dead ends: 3726 [2021-08-21 13:26:22,182 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 634 ImplicationChecksByTransitivity, 921.1ms TimeCoverageRelationStatistics Valid=268, Invalid=2488, Unknown=0, NotChecked=0, Total=2756 [2021-08-21 13:26:22,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3726 states. [2021-08-21 13:26:22,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3726 to 3394. [2021-08-21 13:26:22,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3394 states, 3393 states have (on average 3.358974358974359) internal successors, (11397), 3393 states have internal predecessors, (11397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:26:22,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3394 states to 3394 states and 11397 transitions. [2021-08-21 13:26:22,251 INFO L78 Accepts]: Start accepts. Automaton has 3394 states and 11397 transitions. Word has length 39 [2021-08-21 13:26:22,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:26:22,251 INFO L470 AbstractCegarLoop]: Abstraction has 3394 states and 11397 transitions. [2021-08-21 13:26:22,252 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:26:22,252 INFO L276 IsEmpty]: Start isEmpty. Operand 3394 states and 11397 transitions. [2021-08-21 13:26:22,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:26:22,257 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:26:22,258 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:26:22,259 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-08-21 13:26:22,259 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:26:22,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:26:22,259 INFO L82 PathProgramCache]: Analyzing trace with hash 684943270, now seen corresponding path program 13 times [2021-08-21 13:26:22,259 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:26:22,259 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [987973065] [2021-08-21 13:26:22,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:26:22,259 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:26:22,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:26:22,514 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:26:22,514 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:26:22,515 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [987973065] [2021-08-21 13:26:22,515 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [987973065] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:26:22,515 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:26:22,515 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-08-21 13:26:22,515 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451081513] [2021-08-21 13:26:22,515 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-08-21 13:26:22,515 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:26:22,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-08-21 13:26:22,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-08-21 13:26:22,517 INFO L87 Difference]: Start difference. First operand 3394 states and 11397 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:26:23,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:26:23,665 INFO L93 Difference]: Finished difference Result 3757 states and 12423 transitions. [2021-08-21 13:26:23,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-08-21 13:26:23,666 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:26:23,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:26:23,674 INFO L225 Difference]: With dead ends: 3757 [2021-08-21 13:26:23,674 INFO L226 Difference]: Without dead ends: 3705 [2021-08-21 13:26:23,675 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 599 ImplicationChecksByTransitivity, 799.6ms TimeCoverageRelationStatistics Valid=260, Invalid=2392, Unknown=0, NotChecked=0, Total=2652 [2021-08-21 13:26:23,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3705 states. [2021-08-21 13:26:23,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3705 to 3388. [2021-08-21 13:26:23,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3388 states, 3387 states have (on average 3.3604960141718334) internal successors, (11382), 3387 states have internal predecessors, (11382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:26:23,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3388 states to 3388 states and 11382 transitions. [2021-08-21 13:26:23,724 INFO L78 Accepts]: Start accepts. Automaton has 3388 states and 11382 transitions. Word has length 39 [2021-08-21 13:26:23,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:26:23,725 INFO L470 AbstractCegarLoop]: Abstraction has 3388 states and 11382 transitions. [2021-08-21 13:26:23,725 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:26:23,725 INFO L276 IsEmpty]: Start isEmpty. Operand 3388 states and 11382 transitions. [2021-08-21 13:26:23,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:26:23,730 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:26:23,730 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:26:23,731 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-08-21 13:26:23,731 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:26:23,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:26:23,731 INFO L82 PathProgramCache]: Analyzing trace with hash -910942154, now seen corresponding path program 14 times [2021-08-21 13:26:23,731 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:26:23,731 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [57084948] [2021-08-21 13:26:23,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:26:23,731 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:26:23,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:26:24,014 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:26:24,014 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:26:24,014 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [57084948] [2021-08-21 13:26:24,014 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [57084948] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:26:24,014 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:26:24,014 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-08-21 13:26:24,015 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [966321512] [2021-08-21 13:26:24,015 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-08-21 13:26:24,015 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:26:24,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-08-21 13:26:24,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-08-21 13:26:24,015 INFO L87 Difference]: Start difference. First operand 3388 states and 11382 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:26:25,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:26:25,101 INFO L93 Difference]: Finished difference Result 3718 states and 12302 transitions. [2021-08-21 13:26:25,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-08-21 13:26:25,101 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:26:25,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:26:25,109 INFO L225 Difference]: With dead ends: 3718 [2021-08-21 13:26:25,109 INFO L226 Difference]: Without dead ends: 3663 [2021-08-21 13:26:25,110 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 391 ImplicationChecksByTransitivity, 690.5ms TimeCoverageRelationStatistics Valid=202, Invalid=1778, Unknown=0, NotChecked=0, Total=1980 [2021-08-21 13:26:25,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3663 states. [2021-08-21 13:26:25,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3663 to 3388. [2021-08-21 13:26:25,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3388 states, 3387 states have (on average 3.359905521110127) internal successors, (11380), 3387 states have internal predecessors, (11380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:26:25,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3388 states to 3388 states and 11380 transitions. [2021-08-21 13:26:25,187 INFO L78 Accepts]: Start accepts. Automaton has 3388 states and 11380 transitions. Word has length 39 [2021-08-21 13:26:25,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:26:25,187 INFO L470 AbstractCegarLoop]: Abstraction has 3388 states and 11380 transitions. [2021-08-21 13:26:25,187 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:26:25,187 INFO L276 IsEmpty]: Start isEmpty. Operand 3388 states and 11380 transitions. [2021-08-21 13:26:25,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:26:25,193 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:26:25,193 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:26:25,193 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-08-21 13:26:25,193 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:26:25,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:26:25,198 INFO L82 PathProgramCache]: Analyzing trace with hash 261710068, now seen corresponding path program 15 times [2021-08-21 13:26:25,198 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:26:25,198 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1635432315] [2021-08-21 13:26:25,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:26:25,199 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:26:25,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:26:25,605 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:26:25,605 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:26:25,605 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1635432315] [2021-08-21 13:26:25,605 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1635432315] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:26:25,605 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:26:25,605 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-08-21 13:26:25,605 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [14194105] [2021-08-21 13:26:25,605 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-08-21 13:26:25,606 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:26:25,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-08-21 13:26:25,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-08-21 13:26:25,606 INFO L87 Difference]: Start difference. First operand 3388 states and 11380 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:26:26,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:26:26,593 INFO L93 Difference]: Finished difference Result 3628 states and 12104 transitions. [2021-08-21 13:26:26,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-08-21 13:26:26,594 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:26:26,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:26:26,601 INFO L225 Difference]: With dead ends: 3628 [2021-08-21 13:26:26,601 INFO L226 Difference]: Without dead ends: 3564 [2021-08-21 13:26:26,603 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 333 ImplicationChecksByTransitivity, 658.7ms TimeCoverageRelationStatistics Valid=187, Invalid=1619, Unknown=0, NotChecked=0, Total=1806 [2021-08-21 13:26:26,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3564 states. [2021-08-21 13:26:26,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3564 to 3382. [2021-08-21 13:26:26,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3382 states, 3381 states have (on average 3.3620230700976044) internal successors, (11367), 3381 states have internal predecessors, (11367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:26:26,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3382 states to 3382 states and 11367 transitions. [2021-08-21 13:26:26,659 INFO L78 Accepts]: Start accepts. Automaton has 3382 states and 11367 transitions. Word has length 39 [2021-08-21 13:26:26,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:26:26,659 INFO L470 AbstractCegarLoop]: Abstraction has 3382 states and 11367 transitions. [2021-08-21 13:26:26,659 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:26:26,660 INFO L276 IsEmpty]: Start isEmpty. Operand 3382 states and 11367 transitions. [2021-08-21 13:26:26,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:26:26,666 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:26:26,666 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:26:26,666 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-08-21 13:26:26,666 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:26:26,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:26:26,666 INFO L82 PathProgramCache]: Analyzing trace with hash -1791208906, now seen corresponding path program 16 times [2021-08-21 13:26:26,666 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:26:26,666 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [562776061] [2021-08-21 13:26:26,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:26:26,667 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:26:26,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:26:26,967 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:26:26,968 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:26:26,968 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [562776061] [2021-08-21 13:26:26,968 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [562776061] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:26:26,968 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:26:26,968 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-08-21 13:26:26,968 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11870344] [2021-08-21 13:26:26,968 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-08-21 13:26:26,968 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:26:26,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-08-21 13:26:26,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-08-21 13:26:26,969 INFO L87 Difference]: Start difference. First operand 3382 states and 11367 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:26:28,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:26:28,345 INFO L93 Difference]: Finished difference Result 3835 states and 12644 transitions. [2021-08-21 13:26:28,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-08-21 13:26:28,346 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:26:28,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:26:28,354 INFO L225 Difference]: With dead ends: 3835 [2021-08-21 13:26:28,354 INFO L226 Difference]: Without dead ends: 3698 [2021-08-21 13:26:28,355 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 566 ImplicationChecksByTransitivity, 921.2ms TimeCoverageRelationStatistics Valid=247, Invalid=2303, Unknown=0, NotChecked=0, Total=2550 [2021-08-21 13:26:28,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3698 states. [2021-08-21 13:26:28,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3698 to 3386. [2021-08-21 13:26:28,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3386 states, 3385 states have (on average 3.3610044313146235) internal successors, (11377), 3385 states have internal predecessors, (11377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:26:28,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3386 states to 3386 states and 11377 transitions. [2021-08-21 13:26:28,408 INFO L78 Accepts]: Start accepts. Automaton has 3386 states and 11377 transitions. Word has length 39 [2021-08-21 13:26:28,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:26:28,408 INFO L470 AbstractCegarLoop]: Abstraction has 3386 states and 11377 transitions. [2021-08-21 13:26:28,408 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:26:28,409 INFO L276 IsEmpty]: Start isEmpty. Operand 3386 states and 11377 transitions. [2021-08-21 13:26:28,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:26:28,415 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:26:28,415 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:26:28,415 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-08-21 13:26:28,415 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:26:28,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:26:28,415 INFO L82 PathProgramCache]: Analyzing trace with hash 1008867490, now seen corresponding path program 17 times [2021-08-21 13:26:28,415 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:26:28,416 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [49241155] [2021-08-21 13:26:28,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:26:28,416 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:26:28,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:26:28,711 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:26:28,712 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:26:28,712 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [49241155] [2021-08-21 13:26:28,712 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [49241155] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:26:28,712 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:26:28,712 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-08-21 13:26:28,712 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [864712374] [2021-08-21 13:26:28,712 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-08-21 13:26:28,712 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:26:28,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-08-21 13:26:28,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-08-21 13:26:28,713 INFO L87 Difference]: Start difference. First operand 3386 states and 11377 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:26:30,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:26:30,138 INFO L93 Difference]: Finished difference Result 3873 states and 12714 transitions. [2021-08-21 13:26:30,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-08-21 13:26:30,139 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:26:30,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:26:30,147 INFO L225 Difference]: With dead ends: 3873 [2021-08-21 13:26:30,147 INFO L226 Difference]: Without dead ends: 3809 [2021-08-21 13:26:30,148 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 600 ImplicationChecksByTransitivity, 939.5ms TimeCoverageRelationStatistics Valid=256, Invalid=2396, Unknown=0, NotChecked=0, Total=2652 [2021-08-21 13:26:30,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3809 states. [2021-08-21 13:26:30,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3809 to 3388. [2021-08-21 13:26:30,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3388 states, 3387 states have (on average 3.3604960141718334) internal successors, (11382), 3387 states have internal predecessors, (11382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:26:30,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3388 states to 3388 states and 11382 transitions. [2021-08-21 13:26:30,203 INFO L78 Accepts]: Start accepts. Automaton has 3388 states and 11382 transitions. Word has length 39 [2021-08-21 13:26:30,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:26:30,203 INFO L470 AbstractCegarLoop]: Abstraction has 3388 states and 11382 transitions. [2021-08-21 13:26:30,203 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:26:30,203 INFO L276 IsEmpty]: Start isEmpty. Operand 3388 states and 11382 transitions. [2021-08-21 13:26:30,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:26:30,208 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:26:30,208 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:26:30,208 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-08-21 13:26:30,209 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:26:30,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:26:30,209 INFO L82 PathProgramCache]: Analyzing trace with hash 1927351060, now seen corresponding path program 18 times [2021-08-21 13:26:30,209 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:26:30,209 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [749026366] [2021-08-21 13:26:30,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:26:30,209 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:26:30,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:26:30,491 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:26:30,492 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:26:30,492 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [749026366] [2021-08-21 13:26:30,492 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [749026366] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:26:30,492 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:26:30,492 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-08-21 13:26:30,492 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320543896] [2021-08-21 13:26:30,494 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-08-21 13:26:30,494 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:26:30,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-08-21 13:26:30,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-08-21 13:26:30,495 INFO L87 Difference]: Start difference. First operand 3388 states and 11382 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:26:31,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:26:31,585 INFO L93 Difference]: Finished difference Result 3774 states and 12450 transitions. [2021-08-21 13:26:31,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-08-21 13:26:31,586 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:26:31,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:26:31,593 INFO L225 Difference]: With dead ends: 3774 [2021-08-21 13:26:31,593 INFO L226 Difference]: Without dead ends: 3719 [2021-08-21 13:26:31,595 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 362 ImplicationChecksByTransitivity, 678.7ms TimeCoverageRelationStatistics Valid=186, Invalid=1706, Unknown=0, NotChecked=0, Total=1892 [2021-08-21 13:26:31,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3719 states. [2021-08-21 13:26:31,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3719 to 3388. [2021-08-21 13:26:31,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3388 states, 3387 states have (on average 3.359905521110127) internal successors, (11380), 3387 states have internal predecessors, (11380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:26:31,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3388 states to 3388 states and 11380 transitions. [2021-08-21 13:26:31,642 INFO L78 Accepts]: Start accepts. Automaton has 3388 states and 11380 transitions. Word has length 39 [2021-08-21 13:26:31,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:26:31,643 INFO L470 AbstractCegarLoop]: Abstraction has 3388 states and 11380 transitions. [2021-08-21 13:26:31,643 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:26:31,643 INFO L276 IsEmpty]: Start isEmpty. Operand 3388 states and 11380 transitions. [2021-08-21 13:26:31,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:26:31,647 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:26:31,647 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:26:31,647 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-08-21 13:26:31,647 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:26:31,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:26:31,648 INFO L82 PathProgramCache]: Analyzing trace with hash -1194964014, now seen corresponding path program 19 times [2021-08-21 13:26:31,648 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:26:31,648 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [590010658] [2021-08-21 13:26:31,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:26:31,648 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:26:31,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:26:31,929 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:26:31,929 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:26:31,929 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [590010658] [2021-08-21 13:26:31,929 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [590010658] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:26:31,929 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:26:31,929 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-08-21 13:26:31,929 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503376919] [2021-08-21 13:26:31,930 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-08-21 13:26:31,930 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:26:31,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-08-21 13:26:31,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-08-21 13:26:31,931 INFO L87 Difference]: Start difference. First operand 3388 states and 11380 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:26:32,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:26:32,850 INFO L93 Difference]: Finished difference Result 3744 states and 12389 transitions. [2021-08-21 13:26:32,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-08-21 13:26:32,850 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:26:32,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:26:32,858 INFO L225 Difference]: With dead ends: 3744 [2021-08-21 13:26:32,858 INFO L226 Difference]: Without dead ends: 3684 [2021-08-21 13:26:32,859 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 365 ImplicationChecksByTransitivity, 609.4ms TimeCoverageRelationStatistics Valid=189, Invalid=1703, Unknown=0, NotChecked=0, Total=1892 [2021-08-21 13:26:32,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3684 states. [2021-08-21 13:26:32,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3684 to 3386. [2021-08-21 13:26:32,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3386 states, 3385 states have (on average 3.360413589364845) internal successors, (11375), 3385 states have internal predecessors, (11375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:26:32,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3386 states to 3386 states and 11375 transitions. [2021-08-21 13:26:32,913 INFO L78 Accepts]: Start accepts. Automaton has 3386 states and 11375 transitions. Word has length 39 [2021-08-21 13:26:32,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:26:32,913 INFO L470 AbstractCegarLoop]: Abstraction has 3386 states and 11375 transitions. [2021-08-21 13:26:32,913 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:26:32,913 INFO L276 IsEmpty]: Start isEmpty. Operand 3386 states and 11375 transitions. [2021-08-21 13:26:32,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:26:32,918 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:26:32,918 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:26:32,918 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-08-21 13:26:32,919 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:26:32,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:26:32,919 INFO L82 PathProgramCache]: Analyzing trace with hash 1020436740, now seen corresponding path program 20 times [2021-08-21 13:26:32,919 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:26:32,919 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2033846662] [2021-08-21 13:26:32,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:26:32,919 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:26:32,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:26:33,241 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:26:33,241 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:26:33,241 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2033846662] [2021-08-21 13:26:33,241 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2033846662] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:26:33,241 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:26:33,241 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-08-21 13:26:33,242 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1389461108] [2021-08-21 13:26:33,242 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-08-21 13:26:33,242 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:26:33,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-08-21 13:26:33,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2021-08-21 13:26:33,243 INFO L87 Difference]: Start difference. First operand 3386 states and 11375 transitions. Second operand has 15 states, 15 states have (on average 2.6) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:26:34,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:26:34,191 INFO L93 Difference]: Finished difference Result 3655 states and 12176 transitions. [2021-08-21 13:26:34,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-08-21 13:26:34,192 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.6) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:26:34,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:26:34,199 INFO L225 Difference]: With dead ends: 3655 [2021-08-21 13:26:34,199 INFO L226 Difference]: Without dead ends: 3579 [2021-08-21 13:26:34,200 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 287 ImplicationChecksByTransitivity, 604.1ms TimeCoverageRelationStatistics Valid=164, Invalid=1396, Unknown=0, NotChecked=0, Total=1560 [2021-08-21 13:26:34,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3579 states. [2021-08-21 13:26:34,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3579 to 3394. [2021-08-21 13:26:34,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3394 states, 3393 states have (on average 3.357206012378426) internal successors, (11391), 3393 states have internal predecessors, (11391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:26:34,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3394 states to 3394 states and 11391 transitions. [2021-08-21 13:26:34,244 INFO L78 Accepts]: Start accepts. Automaton has 3394 states and 11391 transitions. Word has length 39 [2021-08-21 13:26:34,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:26:34,245 INFO L470 AbstractCegarLoop]: Abstraction has 3394 states and 11391 transitions. [2021-08-21 13:26:34,245 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.6) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:26:34,245 INFO L276 IsEmpty]: Start isEmpty. Operand 3394 states and 11391 transitions. [2021-08-21 13:26:34,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:26:34,249 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:26:34,249 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:26:34,249 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-08-21 13:26:34,250 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:26:34,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:26:34,250 INFO L82 PathProgramCache]: Analyzing trace with hash 2383128, now seen corresponding path program 21 times [2021-08-21 13:26:34,250 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:26:34,250 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [124370027] [2021-08-21 13:26:34,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:26:34,250 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:26:34,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:26:34,536 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:26:34,537 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:26:34,537 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [124370027] [2021-08-21 13:26:34,537 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [124370027] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:26:34,537 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:26:34,537 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-08-21 13:26:34,537 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475188329] [2021-08-21 13:26:34,537 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-08-21 13:26:34,537 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:26:34,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-08-21 13:26:34,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-08-21 13:26:34,538 INFO L87 Difference]: Start difference. First operand 3394 states and 11391 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:26:35,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:26:35,602 INFO L93 Difference]: Finished difference Result 3637 states and 12122 transitions. [2021-08-21 13:26:35,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-08-21 13:26:35,602 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:26:35,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:26:35,609 INFO L225 Difference]: With dead ends: 3637 [2021-08-21 13:26:35,610 INFO L226 Difference]: Without dead ends: 3559 [2021-08-21 13:26:35,610 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 336 ImplicationChecksByTransitivity, 685.8ms TimeCoverageRelationStatistics Valid=180, Invalid=1626, Unknown=0, NotChecked=0, Total=1806 [2021-08-21 13:26:35,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3559 states. [2021-08-21 13:26:35,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3559 to 3374. [2021-08-21 13:26:35,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3374 states, 3373 states have (on average 3.3628817076786244) internal successors, (11343), 3373 states have internal predecessors, (11343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:26:35,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3374 states to 3374 states and 11343 transitions. [2021-08-21 13:26:35,655 INFO L78 Accepts]: Start accepts. Automaton has 3374 states and 11343 transitions. Word has length 39 [2021-08-21 13:26:35,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:26:35,656 INFO L470 AbstractCegarLoop]: Abstraction has 3374 states and 11343 transitions. [2021-08-21 13:26:35,656 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:26:35,656 INFO L276 IsEmpty]: Start isEmpty. Operand 3374 states and 11343 transitions. [2021-08-21 13:26:35,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:26:35,660 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:26:35,660 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:26:35,660 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-08-21 13:26:35,660 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:26:35,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:26:35,661 INFO L82 PathProgramCache]: Analyzing trace with hash 1886494842, now seen corresponding path program 22 times [2021-08-21 13:26:35,661 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:26:35,661 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [978499063] [2021-08-21 13:26:35,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:26:35,661 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:26:35,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:26:35,942 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:26:35,942 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:26:35,942 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [978499063] [2021-08-21 13:26:35,943 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [978499063] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:26:35,943 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:26:35,943 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-08-21 13:26:35,943 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1250891394] [2021-08-21 13:26:35,943 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-08-21 13:26:35,943 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:26:35,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-08-21 13:26:35,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-08-21 13:26:35,943 INFO L87 Difference]: Start difference. First operand 3374 states and 11343 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:26:37,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:26:37,019 INFO L93 Difference]: Finished difference Result 3817 states and 12701 transitions. [2021-08-21 13:26:37,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-08-21 13:26:37,019 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:26:37,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:26:37,027 INFO L225 Difference]: With dead ends: 3817 [2021-08-21 13:26:37,027 INFO L226 Difference]: Without dead ends: 3750 [2021-08-21 13:26:37,027 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 308 ImplicationChecksByTransitivity, 646.2ms TimeCoverageRelationStatistics Valid=179, Invalid=1543, Unknown=0, NotChecked=0, Total=1722 [2021-08-21 13:26:37,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3750 states. [2021-08-21 13:26:37,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3750 to 3406. [2021-08-21 13:26:37,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3406 states, 3405 states have (on average 3.358883994126285) internal successors, (11437), 3405 states have internal predecessors, (11437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:26:37,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3406 states to 3406 states and 11437 transitions. [2021-08-21 13:26:37,071 INFO L78 Accepts]: Start accepts. Automaton has 3406 states and 11437 transitions. Word has length 39 [2021-08-21 13:26:37,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:26:37,072 INFO L470 AbstractCegarLoop]: Abstraction has 3406 states and 11437 transitions. [2021-08-21 13:26:37,072 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:26:37,072 INFO L276 IsEmpty]: Start isEmpty. Operand 3406 states and 11437 transitions. [2021-08-21 13:26:37,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:26:37,076 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:26:37,076 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:26:37,076 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-08-21 13:26:37,076 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:26:37,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:26:37,077 INFO L82 PathProgramCache]: Analyzing trace with hash 166878872, now seen corresponding path program 23 times [2021-08-21 13:26:37,077 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:26:37,077 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [646068719] [2021-08-21 13:26:37,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:26:37,077 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:26:37,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:26:37,361 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:26:37,361 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:26:37,361 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [646068719] [2021-08-21 13:26:37,361 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [646068719] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:26:37,361 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:26:37,361 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-08-21 13:26:37,361 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [483629101] [2021-08-21 13:26:37,362 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-08-21 13:26:37,362 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:26:37,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-08-21 13:26:37,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-08-21 13:26:37,362 INFO L87 Difference]: Start difference. First operand 3406 states and 11437 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:26:38,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:26:38,700 INFO L93 Difference]: Finished difference Result 3906 states and 12902 transitions. [2021-08-21 13:26:38,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-08-21 13:26:38,700 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:26:38,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:26:38,708 INFO L225 Difference]: With dead ends: 3906 [2021-08-21 13:26:38,708 INFO L226 Difference]: Without dead ends: 3863 [2021-08-21 13:26:38,709 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 563 ImplicationChecksByTransitivity, 834.5ms TimeCoverageRelationStatistics Valid=249, Invalid=2301, Unknown=0, NotChecked=0, Total=2550 [2021-08-21 13:26:38,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3863 states. [2021-08-21 13:26:38,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3863 to 3412. [2021-08-21 13:26:38,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3412 states, 3411 states have (on average 3.3567868660216944) internal successors, (11450), 3411 states have internal predecessors, (11450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:26:38,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3412 states to 3412 states and 11450 transitions. [2021-08-21 13:26:38,757 INFO L78 Accepts]: Start accepts. Automaton has 3412 states and 11450 transitions. Word has length 39 [2021-08-21 13:26:38,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:26:38,757 INFO L470 AbstractCegarLoop]: Abstraction has 3412 states and 11450 transitions. [2021-08-21 13:26:38,757 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:26:38,757 INFO L276 IsEmpty]: Start isEmpty. Operand 3412 states and 11450 transitions. [2021-08-21 13:26:38,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:26:38,762 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:26:38,762 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:26:38,762 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-08-21 13:26:38,762 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:26:38,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:26:38,763 INFO L82 PathProgramCache]: Analyzing trace with hash -1613719430, now seen corresponding path program 24 times [2021-08-21 13:26:38,763 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:26:38,763 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [390674199] [2021-08-21 13:26:38,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:26:38,763 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:26:38,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:26:39,058 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:26:39,058 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:26:39,058 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [390674199] [2021-08-21 13:26:39,058 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [390674199] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:26:39,058 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:26:39,059 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-08-21 13:26:39,059 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752614418] [2021-08-21 13:26:39,059 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-08-21 13:26:39,059 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:26:39,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-08-21 13:26:39,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-08-21 13:26:39,060 INFO L87 Difference]: Start difference. First operand 3412 states and 11450 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:26:40,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:26:40,409 INFO L93 Difference]: Finished difference Result 3861 states and 12798 transitions. [2021-08-21 13:26:40,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-08-21 13:26:40,410 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:26:40,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:26:40,417 INFO L225 Difference]: With dead ends: 3861 [2021-08-21 13:26:40,417 INFO L226 Difference]: Without dead ends: 3797 [2021-08-21 13:26:40,418 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 529 ImplicationChecksByTransitivity, 852.7ms TimeCoverageRelationStatistics Valid=240, Invalid=2210, Unknown=0, NotChecked=0, Total=2450 [2021-08-21 13:26:40,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3797 states. [2021-08-21 13:26:40,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3797 to 3394. [2021-08-21 13:26:40,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3394 states, 3393 states have (on average 3.361921603300914) internal successors, (11407), 3393 states have internal predecessors, (11407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:26:40,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3394 states to 3394 states and 11407 transitions. [2021-08-21 13:26:40,481 INFO L78 Accepts]: Start accepts. Automaton has 3394 states and 11407 transitions. Word has length 39 [2021-08-21 13:26:40,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:26:40,481 INFO L470 AbstractCegarLoop]: Abstraction has 3394 states and 11407 transitions. [2021-08-21 13:26:40,481 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:26:40,481 INFO L276 IsEmpty]: Start isEmpty. Operand 3394 states and 11407 transitions. [2021-08-21 13:26:40,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:26:40,486 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:26:40,486 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:26:40,486 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-08-21 13:26:40,486 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:26:40,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:26:40,486 INFO L82 PathProgramCache]: Analyzing trace with hash -993285030, now seen corresponding path program 25 times [2021-08-21 13:26:40,487 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:26:40,487 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1137574339] [2021-08-21 13:26:40,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:26:40,487 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:26:40,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:26:40,768 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:26:40,769 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:26:40,769 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1137574339] [2021-08-21 13:26:40,769 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1137574339] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:26:40,769 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:26:40,769 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-08-21 13:26:40,769 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514130194] [2021-08-21 13:26:40,769 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-08-21 13:26:40,769 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:26:40,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-08-21 13:26:40,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-08-21 13:26:40,770 INFO L87 Difference]: Start difference. First operand 3394 states and 11407 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:26:41,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:26:41,813 INFO L93 Difference]: Finished difference Result 3817 states and 12695 transitions. [2021-08-21 13:26:41,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-08-21 13:26:41,814 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:26:41,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:26:41,822 INFO L225 Difference]: With dead ends: 3817 [2021-08-21 13:26:41,822 INFO L226 Difference]: Without dead ends: 3750 [2021-08-21 13:26:41,823 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 284 ImplicationChecksByTransitivity, 605.9ms TimeCoverageRelationStatistics Valid=169, Invalid=1471, Unknown=0, NotChecked=0, Total=1640 [2021-08-21 13:26:41,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3750 states. [2021-08-21 13:26:41,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3750 to 3402. [2021-08-21 13:26:41,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3402 states, 3401 states have (on average 3.358718024110556) internal successors, (11423), 3401 states have internal predecessors, (11423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:26:41,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3402 states to 3402 states and 11423 transitions. [2021-08-21 13:26:41,869 INFO L78 Accepts]: Start accepts. Automaton has 3402 states and 11423 transitions. Word has length 39 [2021-08-21 13:26:41,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:26:41,870 INFO L470 AbstractCegarLoop]: Abstraction has 3402 states and 11423 transitions. [2021-08-21 13:26:41,870 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:26:41,870 INFO L276 IsEmpty]: Start isEmpty. Operand 3402 states and 11423 transitions. [2021-08-21 13:26:41,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:26:41,875 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:26:41,875 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:26:41,875 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-08-21 13:26:41,875 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:26:41,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:26:41,875 INFO L82 PathProgramCache]: Analyzing trace with hash -1123879878, now seen corresponding path program 26 times [2021-08-21 13:26:41,875 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:26:41,875 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [553607293] [2021-08-21 13:26:41,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:26:41,875 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:26:41,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:26:42,144 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:26:42,145 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:26:42,145 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [553607293] [2021-08-21 13:26:42,145 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [553607293] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:26:42,145 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:26:42,145 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-08-21 13:26:42,145 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933007084] [2021-08-21 13:26:42,146 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-08-21 13:26:42,146 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:26:42,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-08-21 13:26:42,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-08-21 13:26:42,146 INFO L87 Difference]: Start difference. First operand 3402 states and 11423 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:26:43,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:26:43,104 INFO L93 Difference]: Finished difference Result 3805 states and 12655 transitions. [2021-08-21 13:26:43,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-08-21 13:26:43,104 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:26:43,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:26:43,111 INFO L225 Difference]: With dead ends: 3805 [2021-08-21 13:26:43,112 INFO L226 Difference]: Without dead ends: 3742 [2021-08-21 13:26:43,112 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 336 ImplicationChecksByTransitivity, 583.9ms TimeCoverageRelationStatistics Valid=183, Invalid=1623, Unknown=0, NotChecked=0, Total=1806 [2021-08-21 13:26:43,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3742 states. [2021-08-21 13:26:43,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3742 to 3394. [2021-08-21 13:26:43,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3394 states, 3393 states have (on average 3.3607427055702916) internal successors, (11403), 3393 states have internal predecessors, (11403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:26:43,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3394 states to 3394 states and 11403 transitions. [2021-08-21 13:26:43,185 INFO L78 Accepts]: Start accepts. Automaton has 3394 states and 11403 transitions. Word has length 39 [2021-08-21 13:26:43,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:26:43,185 INFO L470 AbstractCegarLoop]: Abstraction has 3394 states and 11403 transitions. [2021-08-21 13:26:43,185 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:26:43,185 INFO L276 IsEmpty]: Start isEmpty. Operand 3394 states and 11403 transitions. [2021-08-21 13:26:43,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:26:43,190 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:26:43,190 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:26:43,190 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-08-21 13:26:43,190 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:26:43,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:26:43,191 INFO L82 PathProgramCache]: Analyzing trace with hash -1259558470, now seen corresponding path program 27 times [2021-08-21 13:26:43,191 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:26:43,191 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [77838367] [2021-08-21 13:26:43,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:26:43,192 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:26:43,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:26:43,493 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:26:43,495 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:26:43,495 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [77838367] [2021-08-21 13:26:43,495 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [77838367] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:26:43,495 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:26:43,495 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-08-21 13:26:43,495 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549505929] [2021-08-21 13:26:43,496 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-08-21 13:26:43,496 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:26:43,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-08-21 13:26:43,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-08-21 13:26:43,496 INFO L87 Difference]: Start difference. First operand 3394 states and 11403 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:26:45,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:26:45,067 INFO L93 Difference]: Finished difference Result 3972 states and 13056 transitions. [2021-08-21 13:26:45,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-08-21 13:26:45,067 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:26:45,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:26:45,075 INFO L225 Difference]: With dead ends: 3972 [2021-08-21 13:26:45,075 INFO L226 Difference]: Without dead ends: 3929 [2021-08-21 13:26:45,076 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 632 ImplicationChecksByTransitivity, 1056.1ms TimeCoverageRelationStatistics Valid=268, Invalid=2488, Unknown=0, NotChecked=0, Total=2756 [2021-08-21 13:26:45,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3929 states. [2021-08-21 13:26:45,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3929 to 3402. [2021-08-21 13:26:45,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3402 states, 3401 states have (on average 3.358718024110556) internal successors, (11423), 3401 states have internal predecessors, (11423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:26:45,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3402 states to 3402 states and 11423 transitions. [2021-08-21 13:26:45,134 INFO L78 Accepts]: Start accepts. Automaton has 3402 states and 11423 transitions. Word has length 39 [2021-08-21 13:26:45,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:26:45,134 INFO L470 AbstractCegarLoop]: Abstraction has 3402 states and 11423 transitions. [2021-08-21 13:26:45,134 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:26:45,134 INFO L276 IsEmpty]: Start isEmpty. Operand 3402 states and 11423 transitions. [2021-08-21 13:26:45,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:26:45,139 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:26:45,139 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:26:45,139 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-08-21 13:26:45,140 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:26:45,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:26:45,140 INFO L82 PathProgramCache]: Analyzing trace with hash 1254810524, now seen corresponding path program 28 times [2021-08-21 13:26:45,140 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:26:45,140 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [406657215] [2021-08-21 13:26:45,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:26:45,141 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:26:45,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:26:45,493 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:26:45,494 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:26:45,494 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [406657215] [2021-08-21 13:26:45,494 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [406657215] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:26:45,494 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:26:45,494 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-08-21 13:26:45,494 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656365972] [2021-08-21 13:26:45,494 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-08-21 13:26:45,494 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:26:45,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-08-21 13:26:45,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-08-21 13:26:45,495 INFO L87 Difference]: Start difference. First operand 3402 states and 11423 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:26:46,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:26:46,954 INFO L93 Difference]: Finished difference Result 3960 states and 13018 transitions. [2021-08-21 13:26:46,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-08-21 13:26:46,954 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:26:46,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:26:46,962 INFO L225 Difference]: With dead ends: 3960 [2021-08-21 13:26:46,962 INFO L226 Difference]: Without dead ends: 3908 [2021-08-21 13:26:46,963 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 596 ImplicationChecksByTransitivity, 949.8ms TimeCoverageRelationStatistics Valid=260, Invalid=2392, Unknown=0, NotChecked=0, Total=2652 [2021-08-21 13:26:46,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3908 states. [2021-08-21 13:26:46,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3908 to 3396. [2021-08-21 13:26:47,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3396 states, 3395 states have (on average 3.360235640648012) internal successors, (11408), 3395 states have internal predecessors, (11408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:26:47,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3396 states to 3396 states and 11408 transitions. [2021-08-21 13:26:47,008 INFO L78 Accepts]: Start accepts. Automaton has 3396 states and 11408 transitions. Word has length 39 [2021-08-21 13:26:47,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:26:47,008 INFO L470 AbstractCegarLoop]: Abstraction has 3396 states and 11408 transitions. [2021-08-21 13:26:47,008 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:26:47,009 INFO L276 IsEmpty]: Start isEmpty. Operand 3396 states and 11408 transitions. [2021-08-21 13:26:47,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:26:47,013 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:26:47,013 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:26:47,013 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-08-21 13:26:47,013 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:26:47,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:26:47,014 INFO L82 PathProgramCache]: Analyzing trace with hash -341074900, now seen corresponding path program 29 times [2021-08-21 13:26:47,014 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:26:47,014 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1761746786] [2021-08-21 13:26:47,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:26:47,014 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:26:47,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:26:47,387 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:26:47,387 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:26:47,387 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1761746786] [2021-08-21 13:26:47,387 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1761746786] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:26:47,387 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:26:47,387 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-08-21 13:26:47,387 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259511044] [2021-08-21 13:26:47,387 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-08-21 13:26:47,387 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:26:47,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-08-21 13:26:47,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-08-21 13:26:47,388 INFO L87 Difference]: Start difference. First operand 3396 states and 11408 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:26:48,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:26:48,312 INFO L93 Difference]: Finished difference Result 3933 states and 12929 transitions. [2021-08-21 13:26:48,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-08-21 13:26:48,313 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:26:48,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:26:48,320 INFO L225 Difference]: With dead ends: 3933 [2021-08-21 13:26:48,320 INFO L226 Difference]: Without dead ends: 3878 [2021-08-21 13:26:48,321 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 414 ImplicationChecksByTransitivity, 630.4ms TimeCoverageRelationStatistics Valid=212, Invalid=1858, Unknown=0, NotChecked=0, Total=2070 [2021-08-21 13:26:48,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3878 states. [2021-08-21 13:26:48,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3878 to 3396. [2021-08-21 13:26:48,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3396 states, 3395 states have (on average 3.3596465390279824) internal successors, (11406), 3395 states have internal predecessors, (11406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:26:48,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3396 states to 3396 states and 11406 transitions. [2021-08-21 13:26:48,365 INFO L78 Accepts]: Start accepts. Automaton has 3396 states and 11406 transitions. Word has length 39 [2021-08-21 13:26:48,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:26:48,365 INFO L470 AbstractCegarLoop]: Abstraction has 3396 states and 11406 transitions. [2021-08-21 13:26:48,365 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:26:48,365 INFO L276 IsEmpty]: Start isEmpty. Operand 3396 states and 11406 transitions. [2021-08-21 13:26:48,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:26:48,369 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:26:48,369 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:26:48,370 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-08-21 13:26:48,370 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:26:48,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:26:48,370 INFO L82 PathProgramCache]: Analyzing trace with hash 831577322, now seen corresponding path program 30 times [2021-08-21 13:26:48,370 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:26:48,370 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [38014151] [2021-08-21 13:26:48,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:26:48,370 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:26:48,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:26:48,634 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:26:48,635 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:26:48,635 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [38014151] [2021-08-21 13:26:48,635 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [38014151] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:26:48,635 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:26:48,635 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-08-21 13:26:48,635 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112741627] [2021-08-21 13:26:48,635 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-08-21 13:26:48,635 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:26:48,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-08-21 13:26:48,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-08-21 13:26:48,635 INFO L87 Difference]: Start difference. First operand 3396 states and 11406 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:26:49,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:26:49,722 INFO L93 Difference]: Finished difference Result 3868 states and 12777 transitions. [2021-08-21 13:26:49,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-08-21 13:26:49,722 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:26:49,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:26:49,730 INFO L225 Difference]: With dead ends: 3868 [2021-08-21 13:26:49,730 INFO L226 Difference]: Without dead ends: 3822 [2021-08-21 13:26:49,730 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 330 ImplicationChecksByTransitivity, 632.6ms TimeCoverageRelationStatistics Valid=187, Invalid=1619, Unknown=0, NotChecked=0, Total=1806 [2021-08-21 13:26:49,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3822 states. [2021-08-21 13:26:49,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3822 to 3400. [2021-08-21 13:26:49,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3400 states, 3399 states have (on average 3.3580464842600763) internal successors, (11414), 3399 states have internal predecessors, (11414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:26:49,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3400 states to 3400 states and 11414 transitions. [2021-08-21 13:26:49,776 INFO L78 Accepts]: Start accepts. Automaton has 3400 states and 11414 transitions. Word has length 39 [2021-08-21 13:26:49,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:26:49,776 INFO L470 AbstractCegarLoop]: Abstraction has 3400 states and 11414 transitions. [2021-08-21 13:26:49,776 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:26:49,777 INFO L276 IsEmpty]: Start isEmpty. Operand 3400 states and 11414 transitions. [2021-08-21 13:26:49,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:26:49,781 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:26:49,781 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:26:49,781 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-08-21 13:26:49,781 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:26:49,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:26:49,782 INFO L82 PathProgramCache]: Analyzing trace with hash 584111160, now seen corresponding path program 31 times [2021-08-21 13:26:49,782 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:26:49,782 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [879212712] [2021-08-21 13:26:49,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:26:49,782 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:26:49,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:26:50,067 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:26:50,068 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:26:50,068 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [879212712] [2021-08-21 13:26:50,068 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [879212712] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:26:50,068 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:26:50,068 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-08-21 13:26:50,068 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385410913] [2021-08-21 13:26:50,068 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-08-21 13:26:50,068 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:26:50,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-08-21 13:26:50,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-08-21 13:26:50,069 INFO L87 Difference]: Start difference. First operand 3400 states and 11414 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:26:51,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:26:51,311 INFO L93 Difference]: Finished difference Result 3840 states and 12726 transitions. [2021-08-21 13:26:51,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-08-21 13:26:51,312 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:26:51,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:26:51,319 INFO L225 Difference]: With dead ends: 3840 [2021-08-21 13:26:51,319 INFO L226 Difference]: Without dead ends: 3791 [2021-08-21 13:26:51,320 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 437 ImplicationChecksByTransitivity, 787.0ms TimeCoverageRelationStatistics Valid=218, Invalid=1944, Unknown=0, NotChecked=0, Total=2162 [2021-08-21 13:26:51,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3791 states. [2021-08-21 13:26:51,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3791 to 3390. [2021-08-21 13:26:51,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3390 states, 3389 states have (on average 3.361758630864562) internal successors, (11393), 3389 states have internal predecessors, (11393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:26:51,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3390 states to 3390 states and 11393 transitions. [2021-08-21 13:26:51,365 INFO L78 Accepts]: Start accepts. Automaton has 3390 states and 11393 transitions. Word has length 39 [2021-08-21 13:26:51,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:26:51,365 INFO L470 AbstractCegarLoop]: Abstraction has 3390 states and 11393 transitions. [2021-08-21 13:26:51,365 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:26:51,365 INFO L276 IsEmpty]: Start isEmpty. Operand 3390 states and 11393 transitions. [2021-08-21 13:26:51,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:26:51,370 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:26:51,370 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:26:51,370 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-08-21 13:26:51,370 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:26:51,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:26:51,371 INFO L82 PathProgramCache]: Analyzing trace with hash 2122986682, now seen corresponding path program 32 times [2021-08-21 13:26:51,371 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:26:51,371 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [391000398] [2021-08-21 13:26:51,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:26:51,371 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:26:51,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:26:51,653 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:26:51,654 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:26:51,654 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [391000398] [2021-08-21 13:26:51,654 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [391000398] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:26:51,654 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:26:51,654 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-08-21 13:26:51,654 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288268320] [2021-08-21 13:26:51,654 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-08-21 13:26:51,654 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:26:51,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-08-21 13:26:51,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-08-21 13:26:51,655 INFO L87 Difference]: Start difference. First operand 3390 states and 11393 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:26:52,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:26:52,701 INFO L93 Difference]: Finished difference Result 3789 states and 12635 transitions. [2021-08-21 13:26:52,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-08-21 13:26:52,702 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:26:52,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:26:52,709 INFO L225 Difference]: With dead ends: 3789 [2021-08-21 13:26:52,709 INFO L226 Difference]: Without dead ends: 3722 [2021-08-21 13:26:52,710 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 219 ImplicationChecksByTransitivity, 548.2ms TimeCoverageRelationStatistics Valid=145, Invalid=1261, Unknown=0, NotChecked=0, Total=1406 [2021-08-21 13:26:52,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3722 states. [2021-08-21 13:26:52,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3722 to 3430. [2021-08-21 13:26:52,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3430 states, 3429 states have (on average 3.3540390784485274) internal successors, (11501), 3429 states have internal predecessors, (11501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:26:52,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3430 states to 3430 states and 11501 transitions. [2021-08-21 13:26:52,754 INFO L78 Accepts]: Start accepts. Automaton has 3430 states and 11501 transitions. Word has length 39 [2021-08-21 13:26:52,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:26:52,755 INFO L470 AbstractCegarLoop]: Abstraction has 3430 states and 11501 transitions. [2021-08-21 13:26:52,755 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:26:52,755 INFO L276 IsEmpty]: Start isEmpty. Operand 3430 states and 11501 transitions. [2021-08-21 13:26:52,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:26:52,759 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:26:52,759 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:26:52,759 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-08-21 13:26:52,759 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:26:52,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:26:52,760 INFO L82 PathProgramCache]: Analyzing trace with hash 1992391834, now seen corresponding path program 33 times [2021-08-21 13:26:52,760 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:26:52,760 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [783084601] [2021-08-21 13:26:52,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:26:52,760 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:26:52,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:26:53,038 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:26:53,038 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:26:53,038 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [783084601] [2021-08-21 13:26:53,038 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [783084601] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:26:53,038 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:26:53,038 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-08-21 13:26:53,038 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1432528355] [2021-08-21 13:26:53,038 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-08-21 13:26:53,038 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:26:53,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-08-21 13:26:53,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-08-21 13:26:53,039 INFO L87 Difference]: Start difference. First operand 3430 states and 11501 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:26:54,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:26:54,017 INFO L93 Difference]: Finished difference Result 3777 states and 12595 transitions. [2021-08-21 13:26:54,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-08-21 13:26:54,017 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:26:54,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:26:54,025 INFO L225 Difference]: With dead ends: 3777 [2021-08-21 13:26:54,025 INFO L226 Difference]: Without dead ends: 3714 [2021-08-21 13:26:54,027 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 240 ImplicationChecksByTransitivity, 558.3ms TimeCoverageRelationStatistics Valid=153, Invalid=1329, Unknown=0, NotChecked=0, Total=1482 [2021-08-21 13:26:54,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3714 states. [2021-08-21 13:26:54,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3714 to 3422. [2021-08-21 13:26:54,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3422 states, 3421 states have (on average 3.3548669979538146) internal successors, (11477), 3421 states have internal predecessors, (11477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:26:54,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3422 states to 3422 states and 11477 transitions. [2021-08-21 13:26:54,072 INFO L78 Accepts]: Start accepts. Automaton has 3422 states and 11477 transitions. Word has length 39 [2021-08-21 13:26:54,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:26:54,072 INFO L470 AbstractCegarLoop]: Abstraction has 3422 states and 11477 transitions. [2021-08-21 13:26:54,072 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:26:54,072 INFO L276 IsEmpty]: Start isEmpty. Operand 3422 states and 11477 transitions. [2021-08-21 13:26:54,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:26:54,076 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:26:54,076 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:26:54,077 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-08-21 13:26:54,077 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:26:54,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:26:54,077 INFO L82 PathProgramCache]: Analyzing trace with hash 1462491386, now seen corresponding path program 34 times [2021-08-21 13:26:54,077 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:26:54,077 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1878107924] [2021-08-21 13:26:54,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:26:54,077 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:26:54,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:26:54,357 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:26:54,357 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:26:54,357 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1878107924] [2021-08-21 13:26:54,357 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1878107924] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:26:54,357 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:26:54,358 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-08-21 13:26:54,358 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008770889] [2021-08-21 13:26:54,358 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-08-21 13:26:54,358 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:26:54,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-08-21 13:26:54,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-08-21 13:26:54,358 INFO L87 Difference]: Start difference. First operand 3422 states and 11477 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:26:55,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:26:55,446 INFO L93 Difference]: Finished difference Result 3789 states and 12623 transitions. [2021-08-21 13:26:55,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-08-21 13:26:55,446 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:26:55,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:26:55,453 INFO L225 Difference]: With dead ends: 3789 [2021-08-21 13:26:55,453 INFO L226 Difference]: Without dead ends: 3666 [2021-08-21 13:26:55,454 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 261 ImplicationChecksByTransitivity, 588.5ms TimeCoverageRelationStatistics Valid=159, Invalid=1401, Unknown=0, NotChecked=0, Total=1560 [2021-08-21 13:26:55,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3666 states. [2021-08-21 13:26:55,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3666 to 3390. [2021-08-21 13:26:55,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3390 states, 3389 states have (on average 3.3570374741811744) internal successors, (11377), 3389 states have internal predecessors, (11377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:26:55,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3390 states to 3390 states and 11377 transitions. [2021-08-21 13:26:55,501 INFO L78 Accepts]: Start accepts. Automaton has 3390 states and 11377 transitions. Word has length 39 [2021-08-21 13:26:55,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:26:55,501 INFO L470 AbstractCegarLoop]: Abstraction has 3390 states and 11377 transitions. [2021-08-21 13:26:55,502 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:26:55,502 INFO L276 IsEmpty]: Start isEmpty. Operand 3390 states and 11377 transitions. [2021-08-21 13:26:55,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:26:55,506 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:26:55,506 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:26:55,506 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-08-21 13:26:55,506 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:26:55,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:26:55,507 INFO L82 PathProgramCache]: Analyzing trace with hash 744080216, now seen corresponding path program 35 times [2021-08-21 13:26:55,507 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:26:55,507 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [739453486] [2021-08-21 13:26:55,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:26:55,507 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:26:55,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:26:55,791 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:26:55,791 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:26:55,791 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [739453486] [2021-08-21 13:26:55,791 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [739453486] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:26:55,791 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:26:55,791 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-08-21 13:26:55,791 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712221620] [2021-08-21 13:26:55,792 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-08-21 13:26:55,792 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:26:55,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-08-21 13:26:55,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-08-21 13:26:55,792 INFO L87 Difference]: Start difference. First operand 3390 states and 11377 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:26:57,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:26:57,553 INFO L93 Difference]: Finished difference Result 5596 states and 19001 transitions. [2021-08-21 13:26:57,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-08-21 13:26:57,553 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:26:57,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:26:57,565 INFO L225 Difference]: With dead ends: 5596 [2021-08-21 13:26:57,565 INFO L226 Difference]: Without dead ends: 5553 [2021-08-21 13:26:57,566 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 865 ImplicationChecksByTransitivity, 970.1ms TimeCoverageRelationStatistics Valid=309, Invalid=3113, Unknown=0, NotChecked=0, Total=3422 [2021-08-21 13:26:57,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5553 states. [2021-08-21 13:26:57,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5553 to 3484. [2021-08-21 13:26:57,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3484 states, 3483 states have (on average 3.3545793855871375) internal successors, (11684), 3483 states have internal predecessors, (11684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:26:57,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3484 states to 3484 states and 11684 transitions. [2021-08-21 13:26:57,671 INFO L78 Accepts]: Start accepts. Automaton has 3484 states and 11684 transitions. Word has length 39 [2021-08-21 13:26:57,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:26:57,671 INFO L470 AbstractCegarLoop]: Abstraction has 3484 states and 11684 transitions. [2021-08-21 13:26:57,671 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:26:57,671 INFO L276 IsEmpty]: Start isEmpty. Operand 3484 states and 11684 transitions. [2021-08-21 13:26:57,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:26:57,675 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:26:57,675 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:26:57,675 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-08-21 13:26:57,676 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:26:57,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:26:57,676 INFO L82 PathProgramCache]: Analyzing trace with hash -1036518086, now seen corresponding path program 36 times [2021-08-21 13:26:57,676 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:26:57,676 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1500294432] [2021-08-21 13:26:57,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:26:57,676 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:26:57,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:26:57,906 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:26:57,906 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:26:57,906 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1500294432] [2021-08-21 13:26:57,906 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1500294432] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:26:57,906 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:26:57,906 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-08-21 13:26:57,906 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783217539] [2021-08-21 13:26:57,907 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-08-21 13:26:57,907 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:26:57,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-08-21 13:26:57,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-08-21 13:26:57,907 INFO L87 Difference]: Start difference. First operand 3484 states and 11684 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:26:59,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:26:59,583 INFO L93 Difference]: Finished difference Result 6457 states and 21931 transitions. [2021-08-21 13:26:59,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2021-08-21 13:26:59,584 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:26:59,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:26:59,597 INFO L225 Difference]: With dead ends: 6457 [2021-08-21 13:26:59,597 INFO L226 Difference]: Without dead ends: 6405 [2021-08-21 13:26:59,598 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1131 ImplicationChecksByTransitivity, 901.5ms TimeCoverageRelationStatistics Valid=351, Invalid=3809, Unknown=0, NotChecked=0, Total=4160 [2021-08-21 13:26:59,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6405 states. [2021-08-21 13:26:59,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6405 to 3478. [2021-08-21 13:26:59,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3478 states, 3477 states have (on average 3.35605406960023) internal successors, (11669), 3477 states have internal predecessors, (11669), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:26:59,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3478 states to 3478 states and 11669 transitions. [2021-08-21 13:26:59,665 INFO L78 Accepts]: Start accepts. Automaton has 3478 states and 11669 transitions. Word has length 39 [2021-08-21 13:26:59,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:26:59,665 INFO L470 AbstractCegarLoop]: Abstraction has 3478 states and 11669 transitions. [2021-08-21 13:26:59,665 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:26:59,665 INFO L276 IsEmpty]: Start isEmpty. Operand 3478 states and 11669 transitions. [2021-08-21 13:26:59,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:26:59,670 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:26:59,670 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:26:59,670 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2021-08-21 13:26:59,670 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:26:59,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:26:59,671 INFO L82 PathProgramCache]: Analyzing trace with hash 1662563786, now seen corresponding path program 37 times [2021-08-21 13:26:59,671 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:26:59,671 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [544016656] [2021-08-21 13:26:59,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:26:59,671 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:26:59,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:27:00,007 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:27:00,008 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:27:00,008 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [544016656] [2021-08-21 13:27:00,008 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [544016656] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:27:00,008 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:27:00,008 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-08-21 13:27:00,008 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496774212] [2021-08-21 13:27:00,008 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-08-21 13:27:00,008 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:27:00,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-08-21 13:27:00,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-08-21 13:27:00,009 INFO L87 Difference]: Start difference. First operand 3478 states and 11669 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:27:01,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:27:01,521 INFO L93 Difference]: Finished difference Result 5485 states and 18455 transitions. [2021-08-21 13:27:01,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-08-21 13:27:01,521 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:27:01,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:27:01,532 INFO L225 Difference]: With dead ends: 5485 [2021-08-21 13:27:01,532 INFO L226 Difference]: Without dead ends: 5430 [2021-08-21 13:27:01,532 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 573 ImplicationChecksByTransitivity, 834.8ms TimeCoverageRelationStatistics Valid=244, Invalid=2306, Unknown=0, NotChecked=0, Total=2550 [2021-08-21 13:27:01,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5430 states. [2021-08-21 13:27:01,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5430 to 3562. [2021-08-21 13:27:01,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3562 states, 3561 states have (on average 3.3549564729008705) internal successors, (11947), 3561 states have internal predecessors, (11947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:27:01,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3562 states to 3562 states and 11947 transitions. [2021-08-21 13:27:01,586 INFO L78 Accepts]: Start accepts. Automaton has 3562 states and 11947 transitions. Word has length 39 [2021-08-21 13:27:01,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:27:01,586 INFO L470 AbstractCegarLoop]: Abstraction has 3562 states and 11947 transitions. [2021-08-21 13:27:01,586 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:27:01,586 INFO L276 IsEmpty]: Start isEmpty. Operand 3562 states and 11947 transitions. [2021-08-21 13:27:01,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:27:01,591 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:27:01,591 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:27:01,591 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2021-08-21 13:27:01,591 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:27:01,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:27:01,591 INFO L82 PathProgramCache]: Analyzing trace with hash -1459751288, now seen corresponding path program 38 times [2021-08-21 13:27:01,591 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:27:01,591 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [5678043] [2021-08-21 13:27:01,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:27:01,591 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:27:01,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:27:01,876 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:27:01,877 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:27:01,877 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [5678043] [2021-08-21 13:27:01,877 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [5678043] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:27:01,877 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:27:01,877 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-08-21 13:27:01,877 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [334400098] [2021-08-21 13:27:01,877 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-08-21 13:27:01,877 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:27:01,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-08-21 13:27:01,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-08-21 13:27:01,878 INFO L87 Difference]: Start difference. First operand 3562 states and 11947 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:27:03,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:27:03,653 INFO L93 Difference]: Finished difference Result 6346 states and 21389 transitions. [2021-08-21 13:27:03,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-08-21 13:27:03,653 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:27:03,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:27:03,665 INFO L225 Difference]: With dead ends: 6346 [2021-08-21 13:27:03,665 INFO L226 Difference]: Without dead ends: 6286 [2021-08-21 13:27:03,666 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 755 ImplicationChecksByTransitivity, 939.0ms TimeCoverageRelationStatistics Valid=275, Invalid=2805, Unknown=0, NotChecked=0, Total=3080 [2021-08-21 13:27:03,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6286 states. [2021-08-21 13:27:03,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6286 to 3560. [2021-08-21 13:27:03,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3560 states, 3559 states have (on average 3.3554369204832817) internal successors, (11942), 3559 states have internal predecessors, (11942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:27:03,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3560 states to 3560 states and 11942 transitions. [2021-08-21 13:27:03,723 INFO L78 Accepts]: Start accepts. Automaton has 3560 states and 11942 transitions. Word has length 39 [2021-08-21 13:27:03,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:27:03,723 INFO L470 AbstractCegarLoop]: Abstraction has 3560 states and 11942 transitions. [2021-08-21 13:27:03,723 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:27:03,723 INFO L276 IsEmpty]: Start isEmpty. Operand 3560 states and 11942 transitions. [2021-08-21 13:27:03,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:27:03,727 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:27:03,727 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:27:03,727 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2021-08-21 13:27:03,727 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:27:03,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:27:03,728 INFO L82 PathProgramCache]: Analyzing trace with hash 957812406, now seen corresponding path program 39 times [2021-08-21 13:27:03,728 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:27:03,728 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1174130378] [2021-08-21 13:27:03,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:27:03,728 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:27:03,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:27:04,007 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:27:04,007 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:27:04,007 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1174130378] [2021-08-21 13:27:04,007 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1174130378] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:27:04,007 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:27:04,007 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-08-21 13:27:04,007 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976842904] [2021-08-21 13:27:04,007 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-08-21 13:27:04,007 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:27:04,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-08-21 13:27:04,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-08-21 13:27:04,008 INFO L87 Difference]: Start difference. First operand 3560 states and 11942 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:27:05,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:27:05,414 INFO L93 Difference]: Finished difference Result 5424 states and 18314 transitions. [2021-08-21 13:27:05,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-08-21 13:27:05,415 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:27:05,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:27:05,426 INFO L225 Difference]: With dead ends: 5424 [2021-08-21 13:27:05,426 INFO L226 Difference]: Without dead ends: 5333 [2021-08-21 13:27:05,427 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 447 ImplicationChecksByTransitivity, 714.1ms TimeCoverageRelationStatistics Valid=210, Invalid=1952, Unknown=0, NotChecked=0, Total=2162 [2021-08-21 13:27:05,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5333 states. [2021-08-21 13:27:05,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5333 to 3560. [2021-08-21 13:27:05,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3560 states, 3559 states have (on average 3.3537510536667603) internal successors, (11936), 3559 states have internal predecessors, (11936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:27:05,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3560 states to 3560 states and 11936 transitions. [2021-08-21 13:27:05,484 INFO L78 Accepts]: Start accepts. Automaton has 3560 states and 11936 transitions. Word has length 39 [2021-08-21 13:27:05,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:27:05,484 INFO L470 AbstractCegarLoop]: Abstraction has 3560 states and 11936 transitions. [2021-08-21 13:27:05,484 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:27:05,484 INFO L276 IsEmpty]: Start isEmpty. Operand 3560 states and 11936 transitions. [2021-08-21 13:27:05,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:27:05,488 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:27:05,488 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:27:05,488 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2021-08-21 13:27:05,488 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:27:05,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:27:05,489 INFO L82 PathProgramCache]: Analyzing trace with hash -544669800, now seen corresponding path program 40 times [2021-08-21 13:27:05,489 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:27:05,489 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [678528946] [2021-08-21 13:27:05,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:27:05,489 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:27:05,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:27:05,726 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:27:05,726 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:27:05,726 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [678528946] [2021-08-21 13:27:05,726 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [678528946] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:27:05,726 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:27:05,726 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-08-21 13:27:05,726 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632403825] [2021-08-21 13:27:05,726 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-08-21 13:27:05,727 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:27:05,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-08-21 13:27:05,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-08-21 13:27:05,727 INFO L87 Difference]: Start difference. First operand 3560 states and 11936 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:27:06,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:27:06,884 INFO L93 Difference]: Finished difference Result 6237 states and 21116 transitions. [2021-08-21 13:27:06,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-08-21 13:27:06,884 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:27:06,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:27:06,896 INFO L225 Difference]: With dead ends: 6237 [2021-08-21 13:27:06,896 INFO L226 Difference]: Without dead ends: 6121 [2021-08-21 13:27:06,897 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 568 ImplicationChecksByTransitivity, 607.1ms TimeCoverageRelationStatistics Valid=235, Invalid=2315, Unknown=0, NotChecked=0, Total=2550 [2021-08-21 13:27:06,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6121 states. [2021-08-21 13:27:06,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6121 to 3538. [2021-08-21 13:27:06,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3538 states, 3537 states have (on average 3.3551031947978514) internal successors, (11867), 3537 states have internal predecessors, (11867), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:27:06,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3538 states to 3538 states and 11867 transitions. [2021-08-21 13:27:06,953 INFO L78 Accepts]: Start accepts. Automaton has 3538 states and 11867 transitions. Word has length 39 [2021-08-21 13:27:06,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:27:06,953 INFO L470 AbstractCegarLoop]: Abstraction has 3538 states and 11867 transitions. [2021-08-21 13:27:06,954 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:27:06,954 INFO L276 IsEmpty]: Start isEmpty. Operand 3538 states and 11867 transitions. [2021-08-21 13:27:06,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:27:06,958 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:27:06,958 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:27:06,958 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2021-08-21 13:27:06,958 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:27:06,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:27:06,958 INFO L82 PathProgramCache]: Analyzing trace with hash 192048216, now seen corresponding path program 41 times [2021-08-21 13:27:06,958 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:27:06,959 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [523623552] [2021-08-21 13:27:06,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:27:06,959 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:27:06,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:27:07,236 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:27:07,237 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:27:07,237 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [523623552] [2021-08-21 13:27:07,237 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [523623552] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:27:07,237 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:27:07,237 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-08-21 13:27:07,237 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1389283989] [2021-08-21 13:27:07,237 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-08-21 13:27:07,237 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:27:07,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-08-21 13:27:07,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-08-21 13:27:07,238 INFO L87 Difference]: Start difference. First operand 3538 states and 11867 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:27:08,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:27:08,288 INFO L93 Difference]: Finished difference Result 3974 states and 13117 transitions. [2021-08-21 13:27:08,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-08-21 13:27:08,288 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:27:08,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:27:08,296 INFO L225 Difference]: With dead ends: 3974 [2021-08-21 13:27:08,296 INFO L226 Difference]: Without dead ends: 3868 [2021-08-21 13:27:08,296 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 470 ImplicationChecksByTransitivity, 664.4ms TimeCoverageRelationStatistics Valid=222, Invalid=2034, Unknown=0, NotChecked=0, Total=2256 [2021-08-21 13:27:08,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3868 states. [2021-08-21 13:27:08,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3868 to 3554. [2021-08-21 13:27:08,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3554 states, 3553 states have (on average 3.3546298902336056) internal successors, (11919), 3553 states have internal predecessors, (11919), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:27:08,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3554 states to 3554 states and 11919 transitions. [2021-08-21 13:27:08,342 INFO L78 Accepts]: Start accepts. Automaton has 3554 states and 11919 transitions. Word has length 39 [2021-08-21 13:27:08,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:27:08,342 INFO L470 AbstractCegarLoop]: Abstraction has 3554 states and 11919 transitions. [2021-08-21 13:27:08,342 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:27:08,342 INFO L276 IsEmpty]: Start isEmpty. Operand 3554 states and 11919 transitions. [2021-08-21 13:27:08,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:27:08,346 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:27:08,346 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:27:08,347 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2021-08-21 13:27:08,347 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:27:08,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:27:08,347 INFO L82 PathProgramCache]: Analyzing trace with hash -1302842684, now seen corresponding path program 42 times [2021-08-21 13:27:08,347 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:27:08,347 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1098323587] [2021-08-21 13:27:08,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:27:08,347 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:27:08,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:27:08,561 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:27:08,562 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:27:08,562 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1098323587] [2021-08-21 13:27:08,562 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1098323587] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:27:08,562 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:27:08,562 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-08-21 13:27:08,562 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60597192] [2021-08-21 13:27:08,562 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-08-21 13:27:08,562 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:27:08,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-08-21 13:27:08,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-08-21 13:27:08,563 INFO L87 Difference]: Start difference. First operand 3554 states and 11919 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:27:09,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:27:09,496 INFO L93 Difference]: Finished difference Result 4043 states and 13251 transitions. [2021-08-21 13:27:09,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-08-21 13:27:09,496 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:27:09,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:27:09,504 INFO L225 Difference]: With dead ends: 4043 [2021-08-21 13:27:09,504 INFO L226 Difference]: Without dead ends: 3979 [2021-08-21 13:27:09,505 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 568 ImplicationChecksByTransitivity, 602.4ms TimeCoverageRelationStatistics Valid=247, Invalid=2303, Unknown=0, NotChecked=0, Total=2550 [2021-08-21 13:27:09,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3979 states. [2021-08-21 13:27:09,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3979 to 3554. [2021-08-21 13:27:09,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3554 states, 3553 states have (on average 3.3546298902336056) internal successors, (11919), 3553 states have internal predecessors, (11919), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:27:09,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3554 states to 3554 states and 11919 transitions. [2021-08-21 13:27:09,551 INFO L78 Accepts]: Start accepts. Automaton has 3554 states and 11919 transitions. Word has length 39 [2021-08-21 13:27:09,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:27:09,551 INFO L470 AbstractCegarLoop]: Abstraction has 3554 states and 11919 transitions. [2021-08-21 13:27:09,551 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:27:09,551 INFO L276 IsEmpty]: Start isEmpty. Operand 3554 states and 11919 transitions. [2021-08-21 13:27:09,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:27:09,556 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:27:09,556 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:27:09,556 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2021-08-21 13:27:09,556 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:27:09,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:27:09,556 INFO L82 PathProgramCache]: Analyzing trace with hash -384359114, now seen corresponding path program 43 times [2021-08-21 13:27:09,556 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:27:09,556 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [646456906] [2021-08-21 13:27:09,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:27:09,557 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:27:09,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:27:09,775 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:27:09,775 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:27:09,775 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [646456906] [2021-08-21 13:27:09,775 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [646456906] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:27:09,776 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:27:09,776 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-08-21 13:27:09,776 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809372682] [2021-08-21 13:27:09,776 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-08-21 13:27:09,776 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:27:09,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-08-21 13:27:09,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-08-21 13:27:09,776 INFO L87 Difference]: Start difference. First operand 3554 states and 11919 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:27:10,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:27:10,489 INFO L93 Difference]: Finished difference Result 3940 states and 12979 transitions. [2021-08-21 13:27:10,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-08-21 13:27:10,490 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:27:10,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:27:10,497 INFO L225 Difference]: With dead ends: 3940 [2021-08-21 13:27:10,497 INFO L226 Difference]: Without dead ends: 3897 [2021-08-21 13:27:10,497 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 311 ImplicationChecksByTransitivity, 421.9ms TimeCoverageRelationStatistics Valid=172, Invalid=1550, Unknown=0, NotChecked=0, Total=1722 [2021-08-21 13:27:10,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3897 states. [2021-08-21 13:27:10,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3897 to 3560. [2021-08-21 13:27:10,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3560 states, 3559 states have (on average 3.352627142455746) internal successors, (11932), 3559 states have internal predecessors, (11932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:27:10,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3560 states to 3560 states and 11932 transitions. [2021-08-21 13:27:10,541 INFO L78 Accepts]: Start accepts. Automaton has 3560 states and 11932 transitions. Word has length 39 [2021-08-21 13:27:10,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:27:10,543 INFO L470 AbstractCegarLoop]: Abstraction has 3560 states and 11932 transitions. [2021-08-21 13:27:10,543 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:27:10,543 INFO L276 IsEmpty]: Start isEmpty. Operand 3560 states and 11932 transitions. [2021-08-21 13:27:10,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:27:10,547 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:27:10,547 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:27:10,547 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2021-08-21 13:27:10,547 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:27:10,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:27:10,548 INFO L82 PathProgramCache]: Analyzing trace with hash -364210380, now seen corresponding path program 44 times [2021-08-21 13:27:10,548 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:27:10,548 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [658053920] [2021-08-21 13:27:10,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:27:10,548 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:27:10,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:27:10,817 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:27:10,818 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:27:10,818 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [658053920] [2021-08-21 13:27:10,818 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [658053920] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:27:10,818 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:27:10,818 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-08-21 13:27:10,818 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959639785] [2021-08-21 13:27:10,818 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-08-21 13:27:10,818 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:27:10,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-08-21 13:27:10,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-08-21 13:27:10,819 INFO L87 Difference]: Start difference. First operand 3560 states and 11932 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:27:11,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:27:11,919 INFO L93 Difference]: Finished difference Result 3897 states and 12878 transitions. [2021-08-21 13:27:11,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-08-21 13:27:11,919 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:27:11,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:27:11,927 INFO L225 Difference]: With dead ends: 3897 [2021-08-21 13:27:11,927 INFO L226 Difference]: Without dead ends: 3854 [2021-08-21 13:27:11,928 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 363 ImplicationChecksByTransitivity, 659.2ms TimeCoverageRelationStatistics Valid=186, Invalid=1706, Unknown=0, NotChecked=0, Total=1892 [2021-08-21 13:27:11,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3854 states. [2021-08-21 13:27:11,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3854 to 3556. [2021-08-21 13:27:11,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3556 states, 3555 states have (on average 3.353586497890295) internal successors, (11922), 3555 states have internal predecessors, (11922), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:27:11,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3556 states to 3556 states and 11922 transitions. [2021-08-21 13:27:11,975 INFO L78 Accepts]: Start accepts. Automaton has 3556 states and 11922 transitions. Word has length 39 [2021-08-21 13:27:11,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:27:11,975 INFO L470 AbstractCegarLoop]: Abstraction has 3556 states and 11922 transitions. [2021-08-21 13:27:11,975 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:27:11,975 INFO L276 IsEmpty]: Start isEmpty. Operand 3556 states and 11922 transitions. [2021-08-21 13:27:11,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:27:11,980 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:27:11,980 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:27:11,980 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2021-08-21 13:27:11,980 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:27:11,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:27:11,981 INFO L82 PathProgramCache]: Analyzing trace with hash 788293108, now seen corresponding path program 45 times [2021-08-21 13:27:11,981 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:27:11,981 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1652928662] [2021-08-21 13:27:11,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:27:11,981 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:27:11,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:27:12,259 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:27:12,259 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:27:12,259 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1652928662] [2021-08-21 13:27:12,259 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1652928662] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:27:12,259 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:27:12,259 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-08-21 13:27:12,260 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [226002861] [2021-08-21 13:27:12,260 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-08-21 13:27:12,260 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:27:12,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-08-21 13:27:12,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-08-21 13:27:12,260 INFO L87 Difference]: Start difference. First operand 3556 states and 11922 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:27:13,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:27:13,294 INFO L93 Difference]: Finished difference Result 3918 states and 12938 transitions. [2021-08-21 13:27:13,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-08-21 13:27:13,294 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:27:13,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:27:13,302 INFO L225 Difference]: With dead ends: 3918 [2021-08-21 13:27:13,302 INFO L226 Difference]: Without dead ends: 3858 [2021-08-21 13:27:13,303 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 339 ImplicationChecksByTransitivity, 673.4ms TimeCoverageRelationStatistics Valid=183, Invalid=1623, Unknown=0, NotChecked=0, Total=1806 [2021-08-21 13:27:13,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3858 states. [2021-08-21 13:27:13,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3858 to 3554. [2021-08-21 13:27:13,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3554 states, 3553 states have (on average 3.354066985645933) internal successors, (11917), 3553 states have internal predecessors, (11917), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:27:13,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3554 states to 3554 states and 11917 transitions. [2021-08-21 13:27:13,349 INFO L78 Accepts]: Start accepts. Automaton has 3554 states and 11917 transitions. Word has length 39 [2021-08-21 13:27:13,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:27:13,350 INFO L470 AbstractCegarLoop]: Abstraction has 3554 states and 11917 transitions. [2021-08-21 13:27:13,350 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:27:13,350 INFO L276 IsEmpty]: Start isEmpty. Operand 3554 states and 11917 transitions. [2021-08-21 13:27:13,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:27:13,355 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:27:13,355 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:27:13,355 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2021-08-21 13:27:13,355 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:27:13,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:27:13,355 INFO L82 PathProgramCache]: Analyzing trace with hash -1291273434, now seen corresponding path program 46 times [2021-08-21 13:27:13,355 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:27:13,356 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1373002722] [2021-08-21 13:27:13,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:27:13,356 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:27:13,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:27:13,624 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:27:13,624 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:27:13,624 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1373002722] [2021-08-21 13:27:13,624 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1373002722] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:27:13,624 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:27:13,624 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-08-21 13:27:13,624 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1007282925] [2021-08-21 13:27:13,624 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-08-21 13:27:13,624 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:27:13,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-08-21 13:27:13,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2021-08-21 13:27:13,625 INFO L87 Difference]: Start difference. First operand 3554 states and 11917 transitions. Second operand has 15 states, 15 states have (on average 2.6) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:27:14,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:27:14,500 INFO L93 Difference]: Finished difference Result 3886 states and 12878 transitions. [2021-08-21 13:27:14,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-08-21 13:27:14,500 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.6) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:27:14,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:27:14,508 INFO L225 Difference]: With dead ends: 3886 [2021-08-21 13:27:14,508 INFO L226 Difference]: Without dead ends: 3810 [2021-08-21 13:27:14,508 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 244 ImplicationChecksByTransitivity, 544.1ms TimeCoverageRelationStatistics Valid=148, Invalid=1258, Unknown=0, NotChecked=0, Total=1406 [2021-08-21 13:27:14,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3810 states. [2021-08-21 13:27:14,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3810 to 3562. [2021-08-21 13:27:14,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3562 states, 3561 states have (on average 3.3510249929795) internal successors, (11933), 3561 states have internal predecessors, (11933), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:27:14,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3562 states to 3562 states and 11933 transitions. [2021-08-21 13:27:14,552 INFO L78 Accepts]: Start accepts. Automaton has 3562 states and 11933 transitions. Word has length 39 [2021-08-21 13:27:14,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:27:14,552 INFO L470 AbstractCegarLoop]: Abstraction has 3562 states and 11933 transitions. [2021-08-21 13:27:14,552 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.6) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:27:14,552 INFO L276 IsEmpty]: Start isEmpty. Operand 3562 states and 11933 transitions. [2021-08-21 13:27:14,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:27:14,557 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:27:14,557 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:27:14,557 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2021-08-21 13:27:14,557 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:27:14,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:27:14,558 INFO L82 PathProgramCache]: Analyzing trace with hash 1985640250, now seen corresponding path program 47 times [2021-08-21 13:27:14,558 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:27:14,558 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [374030330] [2021-08-21 13:27:14,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:27:14,558 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:27:14,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:27:14,836 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:27:14,837 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:27:14,837 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [374030330] [2021-08-21 13:27:14,837 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [374030330] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:27:14,837 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:27:14,839 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-08-21 13:27:14,843 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825254154] [2021-08-21 13:27:14,844 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-08-21 13:27:14,844 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:27:14,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-08-21 13:27:14,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-08-21 13:27:14,845 INFO L87 Difference]: Start difference. First operand 3562 states and 11933 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:27:15,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:27:15,797 INFO L93 Difference]: Finished difference Result 3868 states and 12824 transitions. [2021-08-21 13:27:15,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-08-21 13:27:15,797 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:27:15,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:27:15,805 INFO L225 Difference]: With dead ends: 3868 [2021-08-21 13:27:15,805 INFO L226 Difference]: Without dead ends: 3798 [2021-08-21 13:27:15,805 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 291 ImplicationChecksByTransitivity, 607.6ms TimeCoverageRelationStatistics Valid=164, Invalid=1476, Unknown=0, NotChecked=0, Total=1640 [2021-08-21 13:27:15,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3798 states. [2021-08-21 13:27:15,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3798 to 3550. [2021-08-21 13:27:15,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3550 states, 3549 states have (on average 3.354466046773739) internal successors, (11905), 3549 states have internal predecessors, (11905), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:27:15,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3550 states to 3550 states and 11905 transitions. [2021-08-21 13:27:15,851 INFO L78 Accepts]: Start accepts. Automaton has 3550 states and 11905 transitions. Word has length 39 [2021-08-21 13:27:15,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:27:15,851 INFO L470 AbstractCegarLoop]: Abstraction has 3550 states and 11905 transitions. [2021-08-21 13:27:15,851 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:27:15,851 INFO L276 IsEmpty]: Start isEmpty. Operand 3550 states and 11905 transitions. [2021-08-21 13:27:15,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:27:15,856 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:27:15,856 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:27:15,856 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2021-08-21 13:27:15,856 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:27:15,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:27:15,856 INFO L82 PathProgramCache]: Analyzing trace with hash -1463143366, now seen corresponding path program 48 times [2021-08-21 13:27:15,857 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:27:15,857 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2090840129] [2021-08-21 13:27:15,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:27:15,857 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:27:15,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:27:16,167 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:27:16,167 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:27:16,167 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2090840129] [2021-08-21 13:27:16,167 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2090840129] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:27:16,167 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:27:16,167 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-08-21 13:27:16,167 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402847822] [2021-08-21 13:27:16,168 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-08-21 13:27:16,168 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:27:16,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-08-21 13:27:16,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-08-21 13:27:16,168 INFO L87 Difference]: Start difference. First operand 3550 states and 11905 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:27:17,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:27:17,867 INFO L93 Difference]: Finished difference Result 5576 states and 18929 transitions. [2021-08-21 13:27:17,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2021-08-21 13:27:17,867 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:27:17,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:27:17,878 INFO L225 Difference]: With dead ends: 5576 [2021-08-21 13:27:17,879 INFO L226 Difference]: Without dead ends: 5533 [2021-08-21 13:27:17,879 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 825 ImplicationChecksByTransitivity, 961.9ms TimeCoverageRelationStatistics Valid=302, Invalid=3004, Unknown=0, NotChecked=0, Total=3306 [2021-08-21 13:27:17,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5533 states. [2021-08-21 13:27:17,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5533 to 3576. [2021-08-21 13:27:17,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3576 states, 3575 states have (on average 3.3532867132867135) internal successors, (11988), 3575 states have internal predecessors, (11988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:27:17,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3576 states to 3576 states and 11988 transitions. [2021-08-21 13:27:17,936 INFO L78 Accepts]: Start accepts. Automaton has 3576 states and 11988 transitions. Word has length 39 [2021-08-21 13:27:17,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:27:17,936 INFO L470 AbstractCegarLoop]: Abstraction has 3576 states and 11988 transitions. [2021-08-21 13:27:17,936 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:27:17,936 INFO L276 IsEmpty]: Start isEmpty. Operand 3576 states and 11988 transitions. [2021-08-21 13:27:17,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:27:17,941 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:27:17,941 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:27:17,941 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2021-08-21 13:27:17,941 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:27:17,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:27:17,941 INFO L82 PathProgramCache]: Analyzing trace with hash 1051225628, now seen corresponding path program 49 times [2021-08-21 13:27:17,941 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:27:17,941 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2124248742] [2021-08-21 13:27:17,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:27:17,941 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:27:17,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:27:18,201 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:27:18,201 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:27:18,201 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2124248742] [2021-08-21 13:27:18,201 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2124248742] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:27:18,201 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:27:18,201 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-08-21 13:27:18,201 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053126331] [2021-08-21 13:27:18,201 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-08-21 13:27:18,201 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:27:18,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-08-21 13:27:18,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-08-21 13:27:18,202 INFO L87 Difference]: Start difference. First operand 3576 states and 11988 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:27:19,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:27:19,654 INFO L93 Difference]: Finished difference Result 6437 states and 21859 transitions. [2021-08-21 13:27:19,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2021-08-21 13:27:19,654 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:27:19,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:27:19,668 INFO L225 Difference]: With dead ends: 6437 [2021-08-21 13:27:19,668 INFO L226 Difference]: Without dead ends: 6385 [2021-08-21 13:27:19,669 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1085 ImplicationChecksByTransitivity, 831.2ms TimeCoverageRelationStatistics Valid=344, Invalid=3688, Unknown=0, NotChecked=0, Total=4032 [2021-08-21 13:27:19,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6385 states. [2021-08-21 13:27:19,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6385 to 3562. [2021-08-21 13:27:19,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3562 states, 3561 states have (on average 3.3549564729008705) internal successors, (11947), 3561 states have internal predecessors, (11947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:27:19,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3562 states to 3562 states and 11947 transitions. [2021-08-21 13:27:19,729 INFO L78 Accepts]: Start accepts. Automaton has 3562 states and 11947 transitions. Word has length 39 [2021-08-21 13:27:19,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:27:19,729 INFO L470 AbstractCegarLoop]: Abstraction has 3562 states and 11947 transitions. [2021-08-21 13:27:19,729 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:27:19,729 INFO L276 IsEmpty]: Start isEmpty. Operand 3562 states and 11947 transitions. [2021-08-21 13:27:19,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:27:19,734 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:27:19,734 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:27:19,734 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2021-08-21 13:27:19,734 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:27:19,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:27:19,734 INFO L82 PathProgramCache]: Analyzing trace with hash -544659796, now seen corresponding path program 50 times [2021-08-21 13:27:19,734 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:27:19,734 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [901410540] [2021-08-21 13:27:19,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:27:19,734 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:27:19,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:27:19,996 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:27:19,997 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:27:19,997 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [901410540] [2021-08-21 13:27:19,997 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [901410540] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:27:19,997 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:27:19,997 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-08-21 13:27:19,997 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525560217] [2021-08-21 13:27:19,997 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-08-21 13:27:19,997 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:27:19,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-08-21 13:27:19,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-08-21 13:27:19,999 INFO L87 Difference]: Start difference. First operand 3562 states and 11947 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:27:21,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:27:21,388 INFO L93 Difference]: Finished difference Result 5393 states and 18145 transitions. [2021-08-21 13:27:21,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-08-21 13:27:21,389 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:27:21,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:27:21,414 INFO L225 Difference]: With dead ends: 5393 [2021-08-21 13:27:21,414 INFO L226 Difference]: Without dead ends: 5338 [2021-08-21 13:27:21,414 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 513 ImplicationChecksByTransitivity, 737.3ms TimeCoverageRelationStatistics Valid=226, Invalid=2126, Unknown=0, NotChecked=0, Total=2352 [2021-08-21 13:27:21,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5338 states. [2021-08-21 13:27:21,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5338 to 3582. [2021-08-21 13:27:21,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3582 states, 3581 states have (on average 3.3546495392348508) internal successors, (12013), 3581 states have internal predecessors, (12013), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:27:21,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3582 states to 3582 states and 12013 transitions. [2021-08-21 13:27:21,497 INFO L78 Accepts]: Start accepts. Automaton has 3582 states and 12013 transitions. Word has length 39 [2021-08-21 13:27:21,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:27:21,497 INFO L470 AbstractCegarLoop]: Abstraction has 3582 states and 12013 transitions. [2021-08-21 13:27:21,497 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:27:21,498 INFO L276 IsEmpty]: Start isEmpty. Operand 3582 states and 12013 transitions. [2021-08-21 13:27:21,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:27:21,502 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:27:21,502 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:27:21,503 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2021-08-21 13:27:21,503 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:27:21,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:27:21,503 INFO L82 PathProgramCache]: Analyzing trace with hash 627992426, now seen corresponding path program 51 times [2021-08-21 13:27:21,503 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:27:21,503 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [961798760] [2021-08-21 13:27:21,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:27:21,503 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:27:21,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:27:21,712 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:27:21,712 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:27:21,712 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [961798760] [2021-08-21 13:27:21,712 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [961798760] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:27:21,712 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:27:21,712 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-08-21 13:27:21,712 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944889297] [2021-08-21 13:27:21,713 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-08-21 13:27:21,713 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:27:21,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-08-21 13:27:21,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-08-21 13:27:21,713 INFO L87 Difference]: Start difference. First operand 3582 states and 12013 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:27:23,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:27:23,180 INFO L93 Difference]: Finished difference Result 6254 states and 21079 transitions. [2021-08-21 13:27:23,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2021-08-21 13:27:23,181 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:27:23,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:27:23,240 INFO L225 Difference]: With dead ends: 6254 [2021-08-21 13:27:23,240 INFO L226 Difference]: Without dead ends: 6194 [2021-08-21 13:27:23,241 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 792 ImplicationChecksByTransitivity, 805.4ms TimeCoverageRelationStatistics Valid=288, Invalid=2904, Unknown=0, NotChecked=0, Total=3192 [2021-08-21 13:27:23,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6194 states. [2021-08-21 13:27:23,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6194 to 3580. [2021-08-21 13:27:23,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3580 states, 3579 states have (on average 3.355127130483375) internal successors, (12008), 3579 states have internal predecessors, (12008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:27:23,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3580 states to 3580 states and 12008 transitions. [2021-08-21 13:27:23,295 INFO L78 Accepts]: Start accepts. Automaton has 3580 states and 12008 transitions. Word has length 39 [2021-08-21 13:27:23,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:27:23,295 INFO L470 AbstractCegarLoop]: Abstraction has 3580 states and 12008 transitions. [2021-08-21 13:27:23,295 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:27:23,295 INFO L276 IsEmpty]: Start isEmpty. Operand 3580 states and 12008 transitions. [2021-08-21 13:27:23,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:27:23,300 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:27:23,300 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:27:23,300 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2021-08-21 13:27:23,301 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:27:23,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:27:23,302 INFO L82 PathProgramCache]: Analyzing trace with hash -1249411176, now seen corresponding path program 52 times [2021-08-21 13:27:23,302 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:27:23,302 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [130658372] [2021-08-21 13:27:23,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:27:23,302 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:27:23,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:27:23,531 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:27:23,531 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:27:23,531 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [130658372] [2021-08-21 13:27:23,531 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [130658372] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:27:23,531 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:27:23,531 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-08-21 13:27:23,531 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402785808] [2021-08-21 13:27:23,532 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-08-21 13:27:23,532 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:27:23,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-08-21 13:27:23,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-08-21 13:27:23,533 INFO L87 Difference]: Start difference. First operand 3580 states and 12008 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:27:24,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:27:24,435 INFO L93 Difference]: Finished difference Result 5284 states and 17876 transitions. [2021-08-21 13:27:24,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-08-21 13:27:24,435 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:27:24,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:27:24,446 INFO L225 Difference]: With dead ends: 5284 [2021-08-21 13:27:24,446 INFO L226 Difference]: Without dead ends: 5193 [2021-08-21 13:27:24,446 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 361 ImplicationChecksByTransitivity, 462.1ms TimeCoverageRelationStatistics Valid=186, Invalid=1706, Unknown=0, NotChecked=0, Total=1892 [2021-08-21 13:27:24,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5193 states. [2021-08-21 13:27:24,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5193 to 3580. [2021-08-21 13:27:24,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3580 states, 3579 states have (on average 3.353450684548757) internal successors, (12002), 3579 states have internal predecessors, (12002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:27:24,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3580 states to 3580 states and 12002 transitions. [2021-08-21 13:27:24,503 INFO L78 Accepts]: Start accepts. Automaton has 3580 states and 12002 transitions. Word has length 39 [2021-08-21 13:27:24,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:27:24,503 INFO L470 AbstractCegarLoop]: Abstraction has 3580 states and 12002 transitions. [2021-08-21 13:27:24,503 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:27:24,503 INFO L276 IsEmpty]: Start isEmpty. Operand 3580 states and 12002 transitions. [2021-08-21 13:27:24,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:27:24,509 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:27:24,509 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:27:24,509 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2021-08-21 13:27:24,509 INFO L402 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:27:24,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:27:24,510 INFO L82 PathProgramCache]: Analyzing trace with hash 1543073914, now seen corresponding path program 53 times [2021-08-21 13:27:24,510 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:27:24,510 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1233737368] [2021-08-21 13:27:24,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:27:24,510 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:27:24,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:27:24,734 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:27:24,735 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:27:24,735 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1233737368] [2021-08-21 13:27:24,735 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1233737368] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:27:24,735 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:27:24,735 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-08-21 13:27:24,735 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160740524] [2021-08-21 13:27:24,735 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-08-21 13:27:24,735 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:27:24,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-08-21 13:27:24,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-08-21 13:27:24,736 INFO L87 Difference]: Start difference. First operand 3580 states and 12002 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:27:25,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:27:25,900 INFO L93 Difference]: Finished difference Result 6116 states and 20752 transitions. [2021-08-21 13:27:25,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-08-21 13:27:25,900 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:27:25,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:27:25,913 INFO L225 Difference]: With dead ends: 6116 [2021-08-21 13:27:25,913 INFO L226 Difference]: Without dead ends: 6016 [2021-08-21 13:27:25,913 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 576 ImplicationChecksByTransitivity, 577.4ms TimeCoverageRelationStatistics Valid=238, Invalid=2312, Unknown=0, NotChecked=0, Total=2550 [2021-08-21 13:27:25,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6016 states. [2021-08-21 13:27:25,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6016 to 3574. [2021-08-21 13:27:25,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3574 states, 3573 states have (on average 3.352085082563672) internal successors, (11977), 3573 states have internal predecessors, (11977), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:27:25,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3574 states to 3574 states and 11977 transitions. [2021-08-21 13:27:25,972 INFO L78 Accepts]: Start accepts. Automaton has 3574 states and 11977 transitions. Word has length 39 [2021-08-21 13:27:25,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:27:25,972 INFO L470 AbstractCegarLoop]: Abstraction has 3574 states and 11977 transitions. [2021-08-21 13:27:25,972 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:27:25,972 INFO L276 IsEmpty]: Start isEmpty. Operand 3574 states and 11977 transitions. [2021-08-21 13:27:25,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:27:25,976 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:27:25,977 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:27:25,977 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2021-08-21 13:27:25,977 INFO L402 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:27:25,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:27:25,977 INFO L82 PathProgramCache]: Analyzing trace with hash 1306448918, now seen corresponding path program 54 times [2021-08-21 13:27:25,977 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:27:25,977 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [622271393] [2021-08-21 13:27:25,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:27:25,977 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:27:25,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:27:26,221 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:27:26,221 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:27:26,221 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [622271393] [2021-08-21 13:27:26,221 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [622271393] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:27:26,221 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:27:26,221 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-08-21 13:27:26,222 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [427416099] [2021-08-21 13:27:26,222 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-08-21 13:27:26,222 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:27:26,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-08-21 13:27:26,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2021-08-21 13:27:26,222 INFO L87 Difference]: Start difference. First operand 3574 states and 11977 transitions. Second operand has 15 states, 15 states have (on average 2.6) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:27:26,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:27:26,793 INFO L93 Difference]: Finished difference Result 3841 states and 12759 transitions. [2021-08-21 13:27:26,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-08-21 13:27:26,793 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.6) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:27:26,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:27:26,801 INFO L225 Difference]: With dead ends: 3841 [2021-08-21 13:27:26,801 INFO L226 Difference]: Without dead ends: 3765 [2021-08-21 13:27:26,801 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 201 ImplicationChecksByTransitivity, 372.5ms TimeCoverageRelationStatistics Valid=135, Invalid=1125, Unknown=0, NotChecked=0, Total=1260 [2021-08-21 13:27:26,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3765 states. [2021-08-21 13:27:26,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3765 to 3606. [2021-08-21 13:27:26,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3606 states, 3605 states have (on average 3.3467406380027738) internal successors, (12065), 3605 states have internal predecessors, (12065), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:27:26,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3606 states to 3606 states and 12065 transitions. [2021-08-21 13:27:26,846 INFO L78 Accepts]: Start accepts. Automaton has 3606 states and 12065 transitions. Word has length 39 [2021-08-21 13:27:26,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:27:26,847 INFO L470 AbstractCegarLoop]: Abstraction has 3606 states and 12065 transitions. [2021-08-21 13:27:26,847 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.6) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:27:26,847 INFO L276 IsEmpty]: Start isEmpty. Operand 3606 states and 12065 transitions. [2021-08-21 13:27:26,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:27:26,851 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:27:26,851 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:27:26,852 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2021-08-21 13:27:26,855 INFO L402 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:27:26,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:27:26,855 INFO L82 PathProgramCache]: Analyzing trace with hash 288395306, now seen corresponding path program 55 times [2021-08-21 13:27:26,855 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:27:26,856 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1572229979] [2021-08-21 13:27:26,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:27:26,856 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:27:26,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:27:27,093 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:27:27,093 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:27:27,093 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1572229979] [2021-08-21 13:27:27,093 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1572229979] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:27:27,094 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:27:27,094 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-08-21 13:27:27,094 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1312541698] [2021-08-21 13:27:27,094 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-08-21 13:27:27,094 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:27:27,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-08-21 13:27:27,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-08-21 13:27:27,094 INFO L87 Difference]: Start difference. First operand 3606 states and 12065 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:27:27,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:27:27,757 INFO L93 Difference]: Finished difference Result 3823 states and 12705 transitions. [2021-08-21 13:27:27,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-08-21 13:27:27,758 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:27:27,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:27:27,765 INFO L225 Difference]: With dead ends: 3823 [2021-08-21 13:27:27,765 INFO L226 Difference]: Without dead ends: 3757 [2021-08-21 13:27:27,772 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 243 ImplicationChecksByTransitivity, 398.4ms TimeCoverageRelationStatistics Valid=151, Invalid=1331, Unknown=0, NotChecked=0, Total=1482 [2021-08-21 13:27:27,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3757 states. [2021-08-21 13:27:27,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3757 to 3598. [2021-08-21 13:27:27,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3598 states, 3597 states have (on average 3.347511815401724) internal successors, (12041), 3597 states have internal predecessors, (12041), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:27:27,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3598 states to 3598 states and 12041 transitions. [2021-08-21 13:27:27,818 INFO L78 Accepts]: Start accepts. Automaton has 3598 states and 12041 transitions. Word has length 39 [2021-08-21 13:27:27,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:27:27,819 INFO L470 AbstractCegarLoop]: Abstraction has 3598 states and 12041 transitions. [2021-08-21 13:27:27,819 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:27:27,819 INFO L276 IsEmpty]: Start isEmpty. Operand 3598 states and 12041 transitions. [2021-08-21 13:27:27,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:27:27,823 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:27:27,823 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:27:27,824 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2021-08-21 13:27:27,824 INFO L402 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:27:27,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:27:27,824 INFO L82 PathProgramCache]: Analyzing trace with hash 6129652, now seen corresponding path program 56 times [2021-08-21 13:27:27,824 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:27:27,824 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2024281874] [2021-08-21 13:27:27,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:27:27,824 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:27:27,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:27:28,046 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:27:28,046 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:27:28,046 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2024281874] [2021-08-21 13:27:28,046 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2024281874] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:27:28,047 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:27:28,047 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-08-21 13:27:28,047 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [92409186] [2021-08-21 13:27:28,047 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-08-21 13:27:28,047 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:27:28,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-08-21 13:27:28,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-08-21 13:27:28,059 INFO L87 Difference]: Start difference. First operand 3598 states and 12041 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:27:28,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:27:28,700 INFO L93 Difference]: Finished difference Result 3832 states and 12726 transitions. [2021-08-21 13:27:28,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-08-21 13:27:28,700 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:27:28,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:27:28,707 INFO L225 Difference]: With dead ends: 3832 [2021-08-21 13:27:28,707 INFO L226 Difference]: Without dead ends: 3670 [2021-08-21 13:27:28,708 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 242 ImplicationChecksByTransitivity, 401.2ms TimeCoverageRelationStatistics Valid=151, Invalid=1331, Unknown=0, NotChecked=0, Total=1482 [2021-08-21 13:27:28,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3670 states. [2021-08-21 13:27:28,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3670 to 3530. [2021-08-21 13:27:28,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3530 states, 3529 states have (on average 3.3587418532162086) internal successors, (11853), 3529 states have internal predecessors, (11853), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:27:28,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3530 states to 3530 states and 11853 transitions. [2021-08-21 13:27:28,753 INFO L78 Accepts]: Start accepts. Automaton has 3530 states and 11853 transitions. Word has length 39 [2021-08-21 13:27:28,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:27:28,753 INFO L470 AbstractCegarLoop]: Abstraction has 3530 states and 11853 transitions. [2021-08-21 13:27:28,753 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:27:28,753 INFO L276 IsEmpty]: Start isEmpty. Operand 3530 states and 11853 transitions. [2021-08-21 13:27:28,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:27:28,758 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:27:28,758 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:27:28,758 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2021-08-21 13:27:28,758 INFO L402 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:27:28,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:27:28,759 INFO L82 PathProgramCache]: Analyzing trace with hash 1964615912, now seen corresponding path program 57 times [2021-08-21 13:27:28,759 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:27:28,759 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [827542470] [2021-08-21 13:27:28,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:27:28,759 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:27:28,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:27:28,991 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:27:28,991 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:27:28,991 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [827542470] [2021-08-21 13:27:28,991 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [827542470] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:27:28,991 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:27:28,991 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 13:27:28,991 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472573634] [2021-08-21 13:27:28,993 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 13:27:28,993 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:27:28,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 13:27:28,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-08-21 13:27:28,993 INFO L87 Difference]: Start difference. First operand 3530 states and 11853 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:27:29,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:27:29,865 INFO L93 Difference]: Finished difference Result 3963 states and 13168 transitions. [2021-08-21 13:27:29,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-08-21 13:27:29,865 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:27:29,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:27:29,873 INFO L225 Difference]: With dead ends: 3963 [2021-08-21 13:27:29,873 INFO L226 Difference]: Without dead ends: 3896 [2021-08-21 13:27:29,874 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 451 ImplicationChecksByTransitivity, 546.8ms TimeCoverageRelationStatistics Valid=222, Invalid=2034, Unknown=0, NotChecked=0, Total=2256 [2021-08-21 13:27:29,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3896 states. [2021-08-21 13:27:29,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3896 to 3566. [2021-08-21 13:27:29,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3566 states, 3565 states have (on average 3.3545582047685834) internal successors, (11959), 3565 states have internal predecessors, (11959), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:27:29,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3566 states to 3566 states and 11959 transitions. [2021-08-21 13:27:29,924 INFO L78 Accepts]: Start accepts. Automaton has 3566 states and 11959 transitions. Word has length 39 [2021-08-21 13:27:29,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:27:29,924 INFO L470 AbstractCegarLoop]: Abstraction has 3566 states and 11959 transitions. [2021-08-21 13:27:29,924 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:27:29,924 INFO L276 IsEmpty]: Start isEmpty. Operand 3566 states and 11959 transitions. [2021-08-21 13:27:29,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:27:29,928 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:27:29,928 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:27:29,929 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2021-08-21 13:27:29,929 INFO L402 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:27:29,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:27:29,930 INFO L82 PathProgramCache]: Analyzing trace with hash 244999942, now seen corresponding path program 58 times [2021-08-21 13:27:29,930 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:27:29,930 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1279217502] [2021-08-21 13:27:29,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:27:29,932 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:27:29,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:27:30,170 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:27:30,171 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:27:30,171 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1279217502] [2021-08-21 13:27:30,171 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1279217502] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:27:30,171 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:27:30,171 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 13:27:30,172 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566279148] [2021-08-21 13:27:30,172 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 13:27:30,172 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:27:30,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 13:27:30,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-08-21 13:27:30,173 INFO L87 Difference]: Start difference. First operand 3566 states and 11959 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:27:31,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:27:31,249 INFO L93 Difference]: Finished difference Result 4048 states and 13357 transitions. [2021-08-21 13:27:31,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-08-21 13:27:31,249 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:27:31,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:27:31,257 INFO L225 Difference]: With dead ends: 4048 [2021-08-21 13:27:31,257 INFO L226 Difference]: Without dead ends: 4005 [2021-08-21 13:27:31,258 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 714 ImplicationChecksByTransitivity, 689.9ms TimeCoverageRelationStatistics Valid=283, Invalid=2797, Unknown=0, NotChecked=0, Total=3080 [2021-08-21 13:27:31,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4005 states. [2021-08-21 13:27:31,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4005 to 3572. [2021-08-21 13:27:31,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3572 states, 3571 states have (on average 3.352562307476897) internal successors, (11972), 3571 states have internal predecessors, (11972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:27:31,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3572 states to 3572 states and 11972 transitions. [2021-08-21 13:27:31,304 INFO L78 Accepts]: Start accepts. Automaton has 3572 states and 11972 transitions. Word has length 39 [2021-08-21 13:27:31,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:27:31,304 INFO L470 AbstractCegarLoop]: Abstraction has 3572 states and 11972 transitions. [2021-08-21 13:27:31,304 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:27:31,304 INFO L276 IsEmpty]: Start isEmpty. Operand 3572 states and 11972 transitions. [2021-08-21 13:27:31,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:27:31,311 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:27:31,311 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:27:31,311 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2021-08-21 13:27:31,311 INFO L402 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:27:31,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:27:31,312 INFO L82 PathProgramCache]: Analyzing trace with hash -1535598360, now seen corresponding path program 59 times [2021-08-21 13:27:31,312 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:27:31,312 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1177396105] [2021-08-21 13:27:31,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:27:31,312 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:27:31,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:27:31,611 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:27:31,611 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:27:31,611 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1177396105] [2021-08-21 13:27:31,611 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1177396105] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:27:31,611 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:27:31,611 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 13:27:31,611 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684035719] [2021-08-21 13:27:31,612 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 13:27:31,612 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:27:31,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 13:27:31,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-08-21 13:27:31,612 INFO L87 Difference]: Start difference. First operand 3572 states and 11972 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:27:32,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:27:32,827 INFO L93 Difference]: Finished difference Result 4003 states and 13253 transitions. [2021-08-21 13:27:32,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-08-21 13:27:32,827 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:27:32,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:27:32,835 INFO L225 Difference]: With dead ends: 4003 [2021-08-21 13:27:32,835 INFO L226 Difference]: Without dead ends: 3939 [2021-08-21 13:27:32,835 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 675 ImplicationChecksByTransitivity, 793.7ms TimeCoverageRelationStatistics Valid=274, Invalid=2696, Unknown=0, NotChecked=0, Total=2970 [2021-08-21 13:27:32,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3939 states. [2021-08-21 13:27:32,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3939 to 3554. [2021-08-21 13:27:32,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3554 states, 3553 states have (on average 3.3574444131719674) internal successors, (11929), 3553 states have internal predecessors, (11929), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:27:32,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3554 states to 3554 states and 11929 transitions. [2021-08-21 13:27:32,884 INFO L78 Accepts]: Start accepts. Automaton has 3554 states and 11929 transitions. Word has length 39 [2021-08-21 13:27:32,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:27:32,884 INFO L470 AbstractCegarLoop]: Abstraction has 3554 states and 11929 transitions. [2021-08-21 13:27:32,884 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:27:32,884 INFO L276 IsEmpty]: Start isEmpty. Operand 3554 states and 11929 transitions. [2021-08-21 13:27:32,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:27:32,888 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:27:32,888 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:27:32,889 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2021-08-21 13:27:32,889 INFO L402 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:27:32,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:27:32,889 INFO L82 PathProgramCache]: Analyzing trace with hash -915163960, now seen corresponding path program 60 times [2021-08-21 13:27:32,889 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:27:32,889 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1696106069] [2021-08-21 13:27:32,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:27:32,890 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:27:32,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:27:33,116 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:27:33,117 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:27:33,117 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1696106069] [2021-08-21 13:27:33,117 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1696106069] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:27:33,117 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:27:33,117 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 13:27:33,117 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824664980] [2021-08-21 13:27:33,117 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 13:27:33,117 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:27:33,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 13:27:33,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-08-21 13:27:33,118 INFO L87 Difference]: Start difference. First operand 3554 states and 11929 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:27:33,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:27:33,950 INFO L93 Difference]: Finished difference Result 3963 states and 13162 transitions. [2021-08-21 13:27:33,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-08-21 13:27:33,950 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:27:33,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:27:33,977 INFO L225 Difference]: With dead ends: 3963 [2021-08-21 13:27:33,977 INFO L226 Difference]: Without dead ends: 3896 [2021-08-21 13:27:33,977 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 450 ImplicationChecksByTransitivity, 519.5ms TimeCoverageRelationStatistics Valid=220, Invalid=2036, Unknown=0, NotChecked=0, Total=2256 [2021-08-21 13:27:33,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3896 states. [2021-08-21 13:27:34,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3896 to 3562. [2021-08-21 13:27:34,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3562 states, 3561 states have (on average 3.3543948329121034) internal successors, (11945), 3561 states have internal predecessors, (11945), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:27:34,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3562 states to 3562 states and 11945 transitions. [2021-08-21 13:27:34,024 INFO L78 Accepts]: Start accepts. Automaton has 3562 states and 11945 transitions. Word has length 39 [2021-08-21 13:27:34,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:27:34,024 INFO L470 AbstractCegarLoop]: Abstraction has 3562 states and 11945 transitions. [2021-08-21 13:27:34,024 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:27:34,024 INFO L276 IsEmpty]: Start isEmpty. Operand 3562 states and 11945 transitions. [2021-08-21 13:27:34,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:27:34,029 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:27:34,029 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:27:34,029 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2021-08-21 13:27:34,029 INFO L402 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:27:34,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:27:34,029 INFO L82 PathProgramCache]: Analyzing trace with hash -1045758808, now seen corresponding path program 61 times [2021-08-21 13:27:34,029 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:27:34,029 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [154795971] [2021-08-21 13:27:34,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:27:34,030 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:27:34,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:27:34,249 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:27:34,249 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:27:34,249 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [154795971] [2021-08-21 13:27:34,249 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [154795971] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:27:34,249 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:27:34,249 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 13:27:34,249 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069268393] [2021-08-21 13:27:34,249 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 13:27:34,250 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:27:34,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 13:27:34,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-08-21 13:27:34,250 INFO L87 Difference]: Start difference. First operand 3562 states and 11945 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:27:35,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:27:35,105 INFO L93 Difference]: Finished difference Result 3951 states and 13122 transitions. [2021-08-21 13:27:35,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-08-21 13:27:35,105 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:27:35,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:27:35,113 INFO L225 Difference]: With dead ends: 3951 [2021-08-21 13:27:35,113 INFO L226 Difference]: Without dead ends: 3888 [2021-08-21 13:27:35,113 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 481 ImplicationChecksByTransitivity, 542.2ms TimeCoverageRelationStatistics Valid=227, Invalid=2125, Unknown=0, NotChecked=0, Total=2352 [2021-08-21 13:27:35,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3888 states. [2021-08-21 13:27:35,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3888 to 3554. [2021-08-21 13:27:35,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3554 states, 3553 states have (on average 3.3563186039966224) internal successors, (11925), 3553 states have internal predecessors, (11925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:27:35,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3554 states to 3554 states and 11925 transitions. [2021-08-21 13:27:35,162 INFO L78 Accepts]: Start accepts. Automaton has 3554 states and 11925 transitions. Word has length 39 [2021-08-21 13:27:35,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:27:35,162 INFO L470 AbstractCegarLoop]: Abstraction has 3554 states and 11925 transitions. [2021-08-21 13:27:35,162 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:27:35,162 INFO L276 IsEmpty]: Start isEmpty. Operand 3554 states and 11925 transitions. [2021-08-21 13:27:35,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:27:35,167 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:27:35,167 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:27:35,167 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2021-08-21 13:27:35,167 INFO L402 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:27:35,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:27:35,167 INFO L82 PathProgramCache]: Analyzing trace with hash -1181437400, now seen corresponding path program 62 times [2021-08-21 13:27:35,167 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:27:35,168 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1236034767] [2021-08-21 13:27:35,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:27:35,168 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:27:35,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:27:35,406 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:27:35,406 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:27:35,406 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1236034767] [2021-08-21 13:27:35,407 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1236034767] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:27:35,407 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:27:35,407 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 13:27:35,407 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1776267743] [2021-08-21 13:27:35,407 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 13:27:35,407 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:27:35,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 13:27:35,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-08-21 13:27:35,407 INFO L87 Difference]: Start difference. First operand 3554 states and 11925 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:27:36,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:27:36,654 INFO L93 Difference]: Finished difference Result 4114 states and 13511 transitions. [2021-08-21 13:27:36,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-08-21 13:27:36,654 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:27:36,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:27:36,663 INFO L225 Difference]: With dead ends: 4114 [2021-08-21 13:27:36,663 INFO L226 Difference]: Without dead ends: 4071 [2021-08-21 13:27:36,663 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 789 ImplicationChecksByTransitivity, 789.4ms TimeCoverageRelationStatistics Valid=300, Invalid=3006, Unknown=0, NotChecked=0, Total=3306 [2021-08-21 13:27:36,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4071 states. [2021-08-21 13:27:36,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4071 to 3562. [2021-08-21 13:27:36,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3562 states, 3561 states have (on average 3.3543948329121034) internal successors, (11945), 3561 states have internal predecessors, (11945), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:27:36,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3562 states to 3562 states and 11945 transitions. [2021-08-21 13:27:36,718 INFO L78 Accepts]: Start accepts. Automaton has 3562 states and 11945 transitions. Word has length 39 [2021-08-21 13:27:36,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:27:36,718 INFO L470 AbstractCegarLoop]: Abstraction has 3562 states and 11945 transitions. [2021-08-21 13:27:36,718 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:27:36,718 INFO L276 IsEmpty]: Start isEmpty. Operand 3562 states and 11945 transitions. [2021-08-21 13:27:36,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:27:36,722 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:27:36,723 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:27:36,723 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2021-08-21 13:27:36,723 INFO L402 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:27:36,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:27:36,725 INFO L82 PathProgramCache]: Analyzing trace with hash 1332931594, now seen corresponding path program 63 times [2021-08-21 13:27:36,725 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:27:36,725 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [802665772] [2021-08-21 13:27:36,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:27:36,725 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:27:36,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:27:36,998 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:27:36,999 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:27:36,999 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [802665772] [2021-08-21 13:27:36,999 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [802665772] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:27:36,999 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:27:36,999 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 13:27:36,999 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452179013] [2021-08-21 13:27:36,999 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 13:27:36,999 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:27:36,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 13:27:36,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-08-21 13:27:37,000 INFO L87 Difference]: Start difference. First operand 3562 states and 11945 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:27:38,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:27:38,251 INFO L93 Difference]: Finished difference Result 4102 states and 13473 transitions. [2021-08-21 13:27:38,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-08-21 13:27:38,256 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:27:38,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:27:38,263 INFO L225 Difference]: With dead ends: 4102 [2021-08-21 13:27:38,264 INFO L226 Difference]: Without dead ends: 4050 [2021-08-21 13:27:38,271 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 749 ImplicationChecksByTransitivity, 817.4ms TimeCoverageRelationStatistics Valid=292, Invalid=2900, Unknown=0, NotChecked=0, Total=3192 [2021-08-21 13:27:38,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4050 states. [2021-08-21 13:27:38,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4050 to 3554. [2021-08-21 13:27:38,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3554 states, 3553 states have (on average 3.3563186039966224) internal successors, (11925), 3553 states have internal predecessors, (11925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:27:38,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3554 states to 3554 states and 11925 transitions. [2021-08-21 13:27:38,319 INFO L78 Accepts]: Start accepts. Automaton has 3554 states and 11925 transitions. Word has length 39 [2021-08-21 13:27:38,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:27:38,319 INFO L470 AbstractCegarLoop]: Abstraction has 3554 states and 11925 transitions. [2021-08-21 13:27:38,319 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:27:38,319 INFO L276 IsEmpty]: Start isEmpty. Operand 3554 states and 11925 transitions. [2021-08-21 13:27:38,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:27:38,324 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:27:38,324 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:27:38,324 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2021-08-21 13:27:38,324 INFO L402 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:27:38,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:27:38,325 INFO L82 PathProgramCache]: Analyzing trace with hash -262953830, now seen corresponding path program 64 times [2021-08-21 13:27:38,325 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:27:38,325 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1915481775] [2021-08-21 13:27:38,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:27:38,326 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:27:38,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:27:38,611 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:27:38,611 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:27:38,611 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1915481775] [2021-08-21 13:27:38,611 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1915481775] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:27:38,611 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:27:38,611 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 13:27:38,611 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [571133382] [2021-08-21 13:27:38,611 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 13:27:38,612 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:27:38,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 13:27:38,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-08-21 13:27:38,612 INFO L87 Difference]: Start difference. First operand 3554 states and 11925 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:27:39,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:27:39,522 INFO L93 Difference]: Finished difference Result 4079 states and 13396 transitions. [2021-08-21 13:27:39,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-08-21 13:27:39,523 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:27:39,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:27:39,530 INFO L225 Difference]: With dead ends: 4079 [2021-08-21 13:27:39,530 INFO L226 Difference]: Without dead ends: 4024 [2021-08-21 13:27:39,531 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 544 ImplicationChecksByTransitivity, 611.3ms TimeCoverageRelationStatistics Valid=244, Invalid=2306, Unknown=0, NotChecked=0, Total=2550 [2021-08-21 13:27:39,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4024 states. [2021-08-21 13:27:39,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4024 to 3556. [2021-08-21 13:27:39,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3556 states, 3555 states have (on average 3.3552742616033755) internal successors, (11928), 3555 states have internal predecessors, (11928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:27:39,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3556 states to 3556 states and 11928 transitions. [2021-08-21 13:27:39,582 INFO L78 Accepts]: Start accepts. Automaton has 3556 states and 11928 transitions. Word has length 39 [2021-08-21 13:27:39,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:27:39,583 INFO L470 AbstractCegarLoop]: Abstraction has 3556 states and 11928 transitions. [2021-08-21 13:27:39,583 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:27:39,584 INFO L276 IsEmpty]: Start isEmpty. Operand 3556 states and 11928 transitions. [2021-08-21 13:27:39,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:27:39,588 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:27:39,588 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:27:39,588 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2021-08-21 13:27:39,588 INFO L402 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:27:39,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:27:39,589 INFO L82 PathProgramCache]: Analyzing trace with hash 909698392, now seen corresponding path program 65 times [2021-08-21 13:27:39,589 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:27:39,589 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1513102348] [2021-08-21 13:27:39,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:27:39,589 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:27:39,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:27:39,822 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:27:39,822 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:27:39,822 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1513102348] [2021-08-21 13:27:39,822 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1513102348] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:27:39,822 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:27:39,822 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 13:27:39,822 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727937413] [2021-08-21 13:27:39,822 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 13:27:39,822 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:27:39,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 13:27:39,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-08-21 13:27:39,823 INFO L87 Difference]: Start difference. First operand 3556 states and 11928 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:27:40,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:27:40,804 INFO L93 Difference]: Finished difference Result 4014 states and 13244 transitions. [2021-08-21 13:27:40,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-08-21 13:27:40,804 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:27:40,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:27:40,812 INFO L225 Difference]: With dead ends: 4014 [2021-08-21 13:27:40,812 INFO L226 Difference]: Without dead ends: 3968 [2021-08-21 13:27:40,813 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 447 ImplicationChecksByTransitivity, 628.1ms TimeCoverageRelationStatistics Valid=219, Invalid=2037, Unknown=0, NotChecked=0, Total=2256 [2021-08-21 13:27:40,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3968 states. [2021-08-21 13:27:40,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3968 to 3560. [2021-08-21 13:27:40,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3560 states, 3559 states have (on average 3.3537510536667603) internal successors, (11936), 3559 states have internal predecessors, (11936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:27:40,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3560 states to 3560 states and 11936 transitions. [2021-08-21 13:27:40,906 INFO L78 Accepts]: Start accepts. Automaton has 3560 states and 11936 transitions. Word has length 39 [2021-08-21 13:27:40,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:27:40,907 INFO L470 AbstractCegarLoop]: Abstraction has 3560 states and 11936 transitions. [2021-08-21 13:27:40,907 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:27:40,907 INFO L276 IsEmpty]: Start isEmpty. Operand 3560 states and 11936 transitions. [2021-08-21 13:27:40,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:27:40,912 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:27:40,912 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:27:40,912 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2021-08-21 13:27:40,912 INFO L402 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:27:40,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:27:40,913 INFO L82 PathProgramCache]: Analyzing trace with hash 662232230, now seen corresponding path program 66 times [2021-08-21 13:27:40,913 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:27:40,913 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1230332399] [2021-08-21 13:27:40,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:27:40,913 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:27:40,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:27:41,198 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:27:41,198 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:27:41,198 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1230332399] [2021-08-21 13:27:41,198 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1230332399] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:27:41,198 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:27:41,198 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 13:27:41,198 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693788149] [2021-08-21 13:27:41,199 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 13:27:41,199 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:27:41,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 13:27:41,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-08-21 13:27:41,199 INFO L87 Difference]: Start difference. First operand 3560 states and 11936 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:27:42,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:27:42,465 INFO L93 Difference]: Finished difference Result 3980 states and 13174 transitions. [2021-08-21 13:27:42,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-08-21 13:27:42,465 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:27:42,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:27:42,473 INFO L225 Difference]: With dead ends: 3980 [2021-08-21 13:27:42,473 INFO L226 Difference]: Without dead ends: 3931 [2021-08-21 13:27:42,473 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 575 ImplicationChecksByTransitivity, 855.1ms TimeCoverageRelationStatistics Valid=250, Invalid=2402, Unknown=0, NotChecked=0, Total=2652 [2021-08-21 13:27:42,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3931 states. [2021-08-21 13:27:42,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3931 to 3550. [2021-08-21 13:27:42,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3550 states, 3549 states have (on average 3.3572837418991264) internal successors, (11915), 3549 states have internal predecessors, (11915), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:27:42,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3550 states to 3550 states and 11915 transitions. [2021-08-21 13:27:42,521 INFO L78 Accepts]: Start accepts. Automaton has 3550 states and 11915 transitions. Word has length 39 [2021-08-21 13:27:42,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:27:42,522 INFO L470 AbstractCegarLoop]: Abstraction has 3550 states and 11915 transitions. [2021-08-21 13:27:42,522 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:27:42,522 INFO L276 IsEmpty]: Start isEmpty. Operand 3550 states and 11915 transitions. [2021-08-21 13:27:42,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:27:42,526 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:27:42,526 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:27:42,526 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2021-08-21 13:27:42,526 INFO L402 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:27:42,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:27:42,527 INFO L82 PathProgramCache]: Analyzing trace with hash -2093859544, now seen corresponding path program 67 times [2021-08-21 13:27:42,527 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:27:42,527 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1540979235] [2021-08-21 13:27:42,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:27:42,527 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:27:42,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:27:42,867 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:27:42,867 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:27:42,867 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1540979235] [2021-08-21 13:27:42,867 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1540979235] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:27:42,867 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:27:42,867 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 13:27:42,867 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382813144] [2021-08-21 13:27:42,867 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 13:27:42,867 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:27:42,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 13:27:42,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-08-21 13:27:42,873 INFO L87 Difference]: Start difference. First operand 3550 states and 11915 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:27:43,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:27:43,968 INFO L93 Difference]: Finished difference Result 4021 states and 13349 transitions. [2021-08-21 13:27:43,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-08-21 13:27:43,968 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:27:43,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:27:43,976 INFO L225 Difference]: With dead ends: 4021 [2021-08-21 13:27:43,976 INFO L226 Difference]: Without dead ends: 3954 [2021-08-21 13:27:43,976 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 337 ImplicationChecksByTransitivity, 660.0ms TimeCoverageRelationStatistics Valid=184, Invalid=1708, Unknown=0, NotChecked=0, Total=1892 [2021-08-21 13:27:43,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3954 states. [2021-08-21 13:27:44,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3954 to 3590. [2021-08-21 13:27:44,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3590 states, 3589 states have (on average 3.3499582056283086) internal successors, (12023), 3589 states have internal predecessors, (12023), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:27:44,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3590 states to 3590 states and 12023 transitions. [2021-08-21 13:27:44,024 INFO L78 Accepts]: Start accepts. Automaton has 3590 states and 12023 transitions. Word has length 39 [2021-08-21 13:27:44,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:27:44,024 INFO L470 AbstractCegarLoop]: Abstraction has 3590 states and 12023 transitions. [2021-08-21 13:27:44,024 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:27:44,024 INFO L276 IsEmpty]: Start isEmpty. Operand 3590 states and 12023 transitions. [2021-08-21 13:27:44,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:27:44,040 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:27:44,041 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:27:44,041 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2021-08-21 13:27:44,041 INFO L402 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:27:44,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:27:44,041 INFO L82 PathProgramCache]: Analyzing trace with hash 2070512904, now seen corresponding path program 68 times [2021-08-21 13:27:44,041 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:27:44,041 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1499013763] [2021-08-21 13:27:44,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:27:44,041 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:27:44,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:27:44,342 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:27:44,342 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:27:44,342 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1499013763] [2021-08-21 13:27:44,342 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1499013763] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:27:44,342 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:27:44,342 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 13:27:44,342 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758125075] [2021-08-21 13:27:44,343 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 13:27:44,343 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:27:44,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 13:27:44,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-08-21 13:27:44,343 INFO L87 Difference]: Start difference. First operand 3590 states and 12023 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:27:45,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:27:45,478 INFO L93 Difference]: Finished difference Result 4009 states and 13309 transitions. [2021-08-21 13:27:45,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-08-21 13:27:45,479 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:27:45,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:27:45,486 INFO L225 Difference]: With dead ends: 4009 [2021-08-21 13:27:45,486 INFO L226 Difference]: Without dead ends: 3946 [2021-08-21 13:27:45,487 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 336 ImplicationChecksByTransitivity, 670.8ms TimeCoverageRelationStatistics Valid=186, Invalid=1706, Unknown=0, NotChecked=0, Total=1892 [2021-08-21 13:27:45,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3946 states. [2021-08-21 13:27:45,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3946 to 3582. [2021-08-21 13:27:45,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3582 states, 3581 states have (on average 3.3507400167550965) internal successors, (11999), 3581 states have internal predecessors, (11999), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:27:45,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3582 states to 3582 states and 11999 transitions. [2021-08-21 13:27:45,536 INFO L78 Accepts]: Start accepts. Automaton has 3582 states and 11999 transitions. Word has length 39 [2021-08-21 13:27:45,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:27:45,536 INFO L470 AbstractCegarLoop]: Abstraction has 3582 states and 11999 transitions. [2021-08-21 13:27:45,536 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:27:45,537 INFO L276 IsEmpty]: Start isEmpty. Operand 3582 states and 11999 transitions. [2021-08-21 13:27:45,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:27:45,541 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:27:45,541 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:27:45,541 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2021-08-21 13:27:45,541 INFO L402 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:27:45,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:27:45,542 INFO L82 PathProgramCache]: Analyzing trace with hash 1540612456, now seen corresponding path program 69 times [2021-08-21 13:27:45,542 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:27:45,542 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [109531175] [2021-08-21 13:27:45,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:27:45,542 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:27:45,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:27:45,837 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:27:45,838 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:27:45,838 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [109531175] [2021-08-21 13:27:45,838 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [109531175] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:27:45,838 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:27:45,838 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 13:27:45,838 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702289505] [2021-08-21 13:27:45,838 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 13:27:45,838 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:27:45,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 13:27:45,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-08-21 13:27:45,838 INFO L87 Difference]: Start difference. First operand 3582 states and 11999 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:27:47,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:27:47,000 INFO L93 Difference]: Finished difference Result 4021 states and 13337 transitions. [2021-08-21 13:27:47,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-08-21 13:27:47,001 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:27:47,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:27:47,008 INFO L225 Difference]: With dead ends: 4021 [2021-08-21 13:27:47,008 INFO L226 Difference]: Without dead ends: 3898 [2021-08-21 13:27:47,009 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 335 ImplicationChecksByTransitivity, 660.2ms TimeCoverageRelationStatistics Valid=182, Invalid=1710, Unknown=0, NotChecked=0, Total=1892 [2021-08-21 13:27:47,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3898 states. [2021-08-21 13:27:47,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3898 to 3550. [2021-08-21 13:27:47,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3550 states, 3549 states have (on average 3.352775429698507) internal successors, (11899), 3549 states have internal predecessors, (11899), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:27:47,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3550 states to 3550 states and 11899 transitions. [2021-08-21 13:27:47,054 INFO L78 Accepts]: Start accepts. Automaton has 3550 states and 11899 transitions. Word has length 39 [2021-08-21 13:27:47,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:27:47,054 INFO L470 AbstractCegarLoop]: Abstraction has 3550 states and 11899 transitions. [2021-08-21 13:27:47,054 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:27:47,054 INFO L276 IsEmpty]: Start isEmpty. Operand 3550 states and 11899 transitions. [2021-08-21 13:27:47,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:27:47,058 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:27:47,058 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:27:47,058 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2021-08-21 13:27:47,058 INFO L402 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:27:47,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:27:47,058 INFO L82 PathProgramCache]: Analyzing trace with hash 822201286, now seen corresponding path program 70 times [2021-08-21 13:27:47,059 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:27:47,059 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [40320071] [2021-08-21 13:27:47,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:27:47,059 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:27:47,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:27:47,352 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:27:47,352 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:27:47,352 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [40320071] [2021-08-21 13:27:47,352 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [40320071] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:27:47,352 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:27:47,352 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 13:27:47,352 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414945853] [2021-08-21 13:27:47,353 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 13:27:47,353 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:27:47,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 13:27:47,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-08-21 13:27:47,353 INFO L87 Difference]: Start difference. First operand 3550 states and 11899 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:27:49,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:27:49,418 INFO L93 Difference]: Finished difference Result 5827 states and 19628 transitions. [2021-08-21 13:27:49,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2021-08-21 13:27:49,419 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:27:49,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:27:49,429 INFO L225 Difference]: With dead ends: 5827 [2021-08-21 13:27:49,429 INFO L226 Difference]: Without dead ends: 5741 [2021-08-21 13:27:49,430 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1087 ImplicationChecksByTransitivity, 1190.5ms TimeCoverageRelationStatistics Valid=346, Invalid=3814, Unknown=0, NotChecked=0, Total=4160 [2021-08-21 13:27:49,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5741 states. [2021-08-21 13:27:49,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5741 to 3628. [2021-08-21 13:27:49,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3628 states, 3627 states have (on average 3.3493245106148333) internal successors, (12148), 3627 states have internal predecessors, (12148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:27:49,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3628 states to 3628 states and 12148 transitions. [2021-08-21 13:27:49,482 INFO L78 Accepts]: Start accepts. Automaton has 3628 states and 12148 transitions. Word has length 39 [2021-08-21 13:27:49,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:27:49,482 INFO L470 AbstractCegarLoop]: Abstraction has 3628 states and 12148 transitions. [2021-08-21 13:27:49,482 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:27:49,482 INFO L276 IsEmpty]: Start isEmpty. Operand 3628 states and 12148 transitions. [2021-08-21 13:27:49,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:27:49,486 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:27:49,487 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:27:49,487 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2021-08-21 13:27:49,487 INFO L402 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:27:49,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:27:49,487 INFO L82 PathProgramCache]: Analyzing trace with hash -958397016, now seen corresponding path program 71 times [2021-08-21 13:27:49,487 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:27:49,487 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1429650046] [2021-08-21 13:27:49,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:27:49,487 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:27:49,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:27:49,805 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:27:49,805 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:27:49,805 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1429650046] [2021-08-21 13:27:49,805 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1429650046] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:27:49,805 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:27:49,805 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 13:27:49,805 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [986689412] [2021-08-21 13:27:49,805 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 13:27:49,805 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:27:49,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 13:27:49,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-08-21 13:27:49,806 INFO L87 Difference]: Start difference. First operand 3628 states and 12148 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:27:52,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:27:52,150 INFO L93 Difference]: Finished difference Result 6643 states and 22454 transitions. [2021-08-21 13:27:52,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2021-08-21 13:27:52,151 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:27:52,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:27:52,165 INFO L225 Difference]: With dead ends: 6643 [2021-08-21 13:27:52,165 INFO L226 Difference]: Without dead ends: 6539 [2021-08-21 13:27:52,166 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1382 ImplicationChecksByTransitivity, 1320.3ms TimeCoverageRelationStatistics Valid=389, Invalid=4581, Unknown=0, NotChecked=0, Total=4970 [2021-08-21 13:27:52,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6539 states. [2021-08-21 13:27:52,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6539 to 3598. [2021-08-21 13:27:52,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3598 states, 3597 states have (on average 3.349179872115652) internal successors, (12047), 3597 states have internal predecessors, (12047), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:27:52,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3598 states to 3598 states and 12047 transitions. [2021-08-21 13:27:52,249 INFO L78 Accepts]: Start accepts. Automaton has 3598 states and 12047 transitions. Word has length 39 [2021-08-21 13:27:52,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:27:52,249 INFO L470 AbstractCegarLoop]: Abstraction has 3598 states and 12047 transitions. [2021-08-21 13:27:52,249 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:27:52,249 INFO L276 IsEmpty]: Start isEmpty. Operand 3598 states and 12047 transitions. [2021-08-21 13:27:52,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:27:52,253 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:27:52,253 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:27:52,253 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2021-08-21 13:27:52,253 INFO L402 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:27:52,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:27:52,254 INFO L82 PathProgramCache]: Analyzing trace with hash 1740684856, now seen corresponding path program 72 times [2021-08-21 13:27:52,254 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:27:52,254 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1757374719] [2021-08-21 13:27:52,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:27:52,254 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:27:52,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:27:52,496 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:27:52,496 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:27:52,496 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1757374719] [2021-08-21 13:27:52,496 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1757374719] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:27:52,496 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:27:52,497 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 13:27:52,497 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [279019009] [2021-08-21 13:27:52,497 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 13:27:52,497 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:27:52,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 13:27:52,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-08-21 13:27:52,497 INFO L87 Difference]: Start difference. First operand 3598 states and 12047 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:27:53,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:27:53,664 INFO L93 Difference]: Finished difference Result 5563 states and 18662 transitions. [2021-08-21 13:27:53,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-08-21 13:27:53,665 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:27:53,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:27:53,677 INFO L225 Difference]: With dead ends: 5563 [2021-08-21 13:27:53,677 INFO L226 Difference]: Without dead ends: 5508 [2021-08-21 13:27:53,677 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 680 ImplicationChecksByTransitivity, 656.6ms TimeCoverageRelationStatistics Valid=267, Invalid=2703, Unknown=0, NotChecked=0, Total=2970 [2021-08-21 13:27:53,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5508 states. [2021-08-21 13:27:53,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5508 to 3626. [2021-08-21 13:27:53,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3626 states, 3625 states have (on average 3.3481379310344828) internal successors, (12137), 3625 states have internal predecessors, (12137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:27:53,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3626 states to 3626 states and 12137 transitions. [2021-08-21 13:27:53,734 INFO L78 Accepts]: Start accepts. Automaton has 3626 states and 12137 transitions. Word has length 39 [2021-08-21 13:27:53,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:27:53,734 INFO L470 AbstractCegarLoop]: Abstraction has 3626 states and 12137 transitions. [2021-08-21 13:27:53,734 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:27:53,734 INFO L276 IsEmpty]: Start isEmpty. Operand 3626 states and 12137 transitions. [2021-08-21 13:27:53,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:27:53,738 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:27:53,738 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:27:53,738 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2021-08-21 13:27:53,738 INFO L402 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:27:53,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:27:53,739 INFO L82 PathProgramCache]: Analyzing trace with hash -1381630218, now seen corresponding path program 73 times [2021-08-21 13:27:53,739 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:27:53,739 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1318298200] [2021-08-21 13:27:53,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:27:53,739 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:27:53,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:27:53,945 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:27:53,945 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:27:53,945 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1318298200] [2021-08-21 13:27:53,945 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1318298200] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:27:53,945 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:27:53,945 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 13:27:53,946 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821358546] [2021-08-21 13:27:53,946 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 13:27:53,946 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:27:53,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 13:27:53,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-08-21 13:27:53,946 INFO L87 Difference]: Start difference. First operand 3626 states and 12137 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:27:55,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:27:55,350 INFO L93 Difference]: Finished difference Result 6424 states and 21596 transitions. [2021-08-21 13:27:55,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2021-08-21 13:27:55,350 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:27:55,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:27:55,363 INFO L225 Difference]: With dead ends: 6424 [2021-08-21 13:27:55,363 INFO L226 Difference]: Without dead ends: 6364 [2021-08-21 13:27:55,364 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 877 ImplicationChecksByTransitivity, 739.0ms TimeCoverageRelationStatistics Valid=298, Invalid=3242, Unknown=0, NotChecked=0, Total=3540 [2021-08-21 13:27:55,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6364 states. [2021-08-21 13:27:55,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6364 to 3624. [2021-08-21 13:27:55,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3624 states, 3623 states have (on average 3.348606127518631) internal successors, (12132), 3623 states have internal predecessors, (12132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:27:55,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3624 states to 3624 states and 12132 transitions. [2021-08-21 13:27:55,422 INFO L78 Accepts]: Start accepts. Automaton has 3624 states and 12132 transitions. Word has length 39 [2021-08-21 13:27:55,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:27:55,423 INFO L470 AbstractCegarLoop]: Abstraction has 3624 states and 12132 transitions. [2021-08-21 13:27:55,423 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:27:55,423 INFO L276 IsEmpty]: Start isEmpty. Operand 3624 states and 12132 transitions. [2021-08-21 13:27:55,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:27:55,427 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:27:55,427 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:27:55,427 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2021-08-21 13:27:55,427 INFO L402 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:27:55,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:27:55,428 INFO L82 PathProgramCache]: Analyzing trace with hash 1035933476, now seen corresponding path program 74 times [2021-08-21 13:27:55,428 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:27:55,428 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [65081902] [2021-08-21 13:27:55,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:27:55,428 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:27:55,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:27:55,667 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:27:55,667 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:27:55,667 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [65081902] [2021-08-21 13:27:55,667 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [65081902] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:27:55,667 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:27:55,667 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 13:27:55,667 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [73845123] [2021-08-21 13:27:55,668 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 13:27:55,668 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:27:55,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 13:27:55,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-08-21 13:27:55,668 INFO L87 Difference]: Start difference. First operand 3624 states and 12132 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:27:56,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:27:56,807 INFO L93 Difference]: Finished difference Result 5514 states and 18559 transitions. [2021-08-21 13:27:56,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-08-21 13:27:56,807 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:27:56,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:27:56,829 INFO L225 Difference]: With dead ends: 5514 [2021-08-21 13:27:56,829 INFO L226 Difference]: Without dead ends: 5423 [2021-08-21 13:27:56,830 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 542 ImplicationChecksByTransitivity, 607.5ms TimeCoverageRelationStatistics Valid=232, Invalid=2318, Unknown=0, NotChecked=0, Total=2550 [2021-08-21 13:27:56,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5423 states. [2021-08-21 13:27:56,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5423 to 3624. [2021-08-21 13:27:56,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3624 states, 3623 states have (on average 3.346950041402153) internal successors, (12126), 3623 states have internal predecessors, (12126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:27:56,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3624 states to 3624 states and 12126 transitions. [2021-08-21 13:27:56,900 INFO L78 Accepts]: Start accepts. Automaton has 3624 states and 12126 transitions. Word has length 39 [2021-08-21 13:27:56,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:27:56,900 INFO L470 AbstractCegarLoop]: Abstraction has 3624 states and 12126 transitions. [2021-08-21 13:27:56,900 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:27:56,900 INFO L276 IsEmpty]: Start isEmpty. Operand 3624 states and 12126 transitions. [2021-08-21 13:27:56,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:27:56,905 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:27:56,906 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:27:56,906 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2021-08-21 13:27:56,906 INFO L402 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:27:56,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:27:56,907 INFO L82 PathProgramCache]: Analyzing trace with hash -466548730, now seen corresponding path program 75 times [2021-08-21 13:27:56,907 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:27:56,907 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [260900647] [2021-08-21 13:27:56,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:27:56,907 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:27:56,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:27:57,129 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:27:57,129 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:27:57,129 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [260900647] [2021-08-21 13:27:57,129 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [260900647] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:27:57,129 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:27:57,129 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 13:27:57,129 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [14037065] [2021-08-21 13:27:57,129 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 13:27:57,129 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:27:57,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 13:27:57,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-08-21 13:27:57,130 INFO L87 Difference]: Start difference. First operand 3624 states and 12126 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:27:58,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:27:58,888 INFO L93 Difference]: Finished difference Result 6327 states and 21361 transitions. [2021-08-21 13:27:58,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-08-21 13:27:58,889 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:27:58,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:27:58,905 INFO L225 Difference]: With dead ends: 6327 [2021-08-21 13:27:58,906 INFO L226 Difference]: Without dead ends: 6211 [2021-08-21 13:27:58,906 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 675 ImplicationChecksByTransitivity, 836.3ms TimeCoverageRelationStatistics Valid=257, Invalid=2713, Unknown=0, NotChecked=0, Total=2970 [2021-08-21 13:27:58,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6211 states. [2021-08-21 13:27:58,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6211 to 3586. [2021-08-21 13:27:58,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3586 states, 3585 states have (on average 3.3531380753138076) internal successors, (12021), 3585 states have internal predecessors, (12021), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:27:58,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3586 states to 3586 states and 12021 transitions. [2021-08-21 13:27:58,976 INFO L78 Accepts]: Start accepts. Automaton has 3586 states and 12021 transitions. Word has length 39 [2021-08-21 13:27:58,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:27:58,976 INFO L470 AbstractCegarLoop]: Abstraction has 3586 states and 12021 transitions. [2021-08-21 13:27:58,976 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:27:58,976 INFO L276 IsEmpty]: Start isEmpty. Operand 3586 states and 12021 transitions. [2021-08-21 13:27:58,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:27:58,981 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:27:58,981 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:27:58,981 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2021-08-21 13:27:58,981 INFO L402 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:27:58,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:27:58,981 INFO L82 PathProgramCache]: Analyzing trace with hash 162684534, now seen corresponding path program 76 times [2021-08-21 13:27:58,981 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:27:58,981 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1849239130] [2021-08-21 13:27:58,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:27:58,982 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:27:58,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:27:59,308 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:27:59,308 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:27:59,308 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1849239130] [2021-08-21 13:27:59,308 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1849239130] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:27:59,308 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:27:59,308 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 13:27:59,308 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [7506404] [2021-08-21 13:27:59,309 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 13:27:59,309 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:27:59,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 13:27:59,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-08-21 13:27:59,309 INFO L87 Difference]: Start difference. First operand 3586 states and 12021 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:28:00,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:28:00,256 INFO L93 Difference]: Finished difference Result 3853 states and 12803 transitions. [2021-08-21 13:28:00,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-08-21 13:28:00,256 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:28:00,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:28:00,266 INFO L225 Difference]: With dead ends: 3853 [2021-08-21 13:28:00,266 INFO L226 Difference]: Without dead ends: 3786 [2021-08-21 13:28:00,267 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 264 ImplicationChecksByTransitivity, 623.8ms TimeCoverageRelationStatistics Valid=164, Invalid=1476, Unknown=0, NotChecked=0, Total=1640 [2021-08-21 13:28:00,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3786 states. [2021-08-21 13:28:00,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3786 to 3634. [2021-08-21 13:28:00,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3634 states, 3633 states have (on average 3.3440682631434075) internal successors, (12149), 3633 states have internal predecessors, (12149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:28:00,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3634 states to 3634 states and 12149 transitions. [2021-08-21 13:28:00,319 INFO L78 Accepts]: Start accepts. Automaton has 3634 states and 12149 transitions. Word has length 39 [2021-08-21 13:28:00,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:28:00,319 INFO L470 AbstractCegarLoop]: Abstraction has 3634 states and 12149 transitions. [2021-08-21 13:28:00,319 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:28:00,319 INFO L276 IsEmpty]: Start isEmpty. Operand 3634 states and 12149 transitions. [2021-08-21 13:28:00,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:28:00,324 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:28:00,324 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:28:00,324 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2021-08-21 13:28:00,325 INFO L402 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:28:00,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:28:00,325 INFO L82 PathProgramCache]: Analyzing trace with hash -9458684, now seen corresponding path program 77 times [2021-08-21 13:28:00,325 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:28:00,325 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1462782976] [2021-08-21 13:28:00,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:28:00,325 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:28:00,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:28:00,623 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:28:00,623 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:28:00,623 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1462782976] [2021-08-21 13:28:00,623 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1462782976] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:28:00,623 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:28:00,624 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 13:28:00,624 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121091003] [2021-08-21 13:28:00,624 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 13:28:00,624 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:28:00,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 13:28:00,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-08-21 13:28:00,624 INFO L87 Difference]: Start difference. First operand 3634 states and 12149 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:28:01,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:28:01,540 INFO L93 Difference]: Finished difference Result 3841 states and 12763 transitions. [2021-08-21 13:28:01,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-08-21 13:28:01,541 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:28:01,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:28:01,549 INFO L225 Difference]: With dead ends: 3841 [2021-08-21 13:28:01,549 INFO L226 Difference]: Without dead ends: 3778 [2021-08-21 13:28:01,550 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 265 ImplicationChecksByTransitivity, 595.0ms TimeCoverageRelationStatistics Valid=162, Invalid=1478, Unknown=0, NotChecked=0, Total=1640 [2021-08-21 13:28:01,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3778 states. [2021-08-21 13:28:01,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3778 to 3626. [2021-08-21 13:28:01,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3626 states, 3625 states have (on average 3.3448275862068964) internal successors, (12125), 3625 states have internal predecessors, (12125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:28:01,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3626 states to 3626 states and 12125 transitions. [2021-08-21 13:28:01,597 INFO L78 Accepts]: Start accepts. Automaton has 3626 states and 12125 transitions. Word has length 39 [2021-08-21 13:28:01,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:28:01,597 INFO L470 AbstractCegarLoop]: Abstraction has 3626 states and 12125 transitions. [2021-08-21 13:28:01,597 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:28:01,597 INFO L276 IsEmpty]: Start isEmpty. Operand 3626 states and 12125 transitions. [2021-08-21 13:28:01,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:28:01,602 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:28:01,602 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:28:01,602 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2021-08-21 13:28:01,602 INFO L402 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:28:01,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:28:01,602 INFO L82 PathProgramCache]: Analyzing trace with hash -1812292840, now seen corresponding path program 78 times [2021-08-21 13:28:01,602 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:28:01,602 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1536708910] [2021-08-21 13:28:01,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:28:01,602 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:28:01,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:28:01,898 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:28:01,899 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:28:01,899 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1536708910] [2021-08-21 13:28:01,899 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1536708910] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:28:01,899 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:28:01,899 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 13:28:01,899 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1920584605] [2021-08-21 13:28:01,899 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 13:28:01,899 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:28:01,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 13:28:01,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-08-21 13:28:01,899 INFO L87 Difference]: Start difference. First operand 3626 states and 12125 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:28:02,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:28:02,851 INFO L93 Difference]: Finished difference Result 3841 states and 12755 transitions. [2021-08-21 13:28:02,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-08-21 13:28:02,851 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:28:02,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:28:02,859 INFO L225 Difference]: With dead ends: 3841 [2021-08-21 13:28:02,859 INFO L226 Difference]: Without dead ends: 3698 [2021-08-21 13:28:02,859 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 264 ImplicationChecksByTransitivity, 619.6ms TimeCoverageRelationStatistics Valid=159, Invalid=1481, Unknown=0, NotChecked=0, Total=1640 [2021-08-21 13:28:02,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3698 states. [2021-08-21 13:28:02,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3698 to 3574. [2021-08-21 13:28:02,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3574 states, 3573 states have (on average 3.355443604813882) internal successors, (11989), 3573 states have internal predecessors, (11989), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:28:02,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3574 states to 3574 states and 11989 transitions. [2021-08-21 13:28:02,905 INFO L78 Accepts]: Start accepts. Automaton has 3574 states and 11989 transitions. Word has length 39 [2021-08-21 13:28:02,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:28:02,905 INFO L470 AbstractCegarLoop]: Abstraction has 3574 states and 11989 transitions. [2021-08-21 13:28:02,905 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:28:02,905 INFO L276 IsEmpty]: Start isEmpty. Operand 3574 states and 11989 transitions. [2021-08-21 13:28:02,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:28:02,910 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:28:02,910 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:28:02,910 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2021-08-21 13:28:02,910 INFO L402 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:28:02,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:28:02,910 INFO L82 PathProgramCache]: Analyzing trace with hash -1125585594, now seen corresponding path program 79 times [2021-08-21 13:28:02,910 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:28:02,910 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1983118993] [2021-08-21 13:28:02,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:28:02,911 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:28:02,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:28:03,210 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:28:03,210 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:28:03,210 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1983118993] [2021-08-21 13:28:03,210 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1983118993] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:28:03,210 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:28:03,210 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 13:28:03,210 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [741187547] [2021-08-21 13:28:03,210 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 13:28:03,210 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:28:03,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 13:28:03,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-08-21 13:28:03,211 INFO L87 Difference]: Start difference. First operand 3574 states and 11989 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:28:04,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:28:04,325 INFO L93 Difference]: Finished difference Result 3979 states and 13198 transitions. [2021-08-21 13:28:04,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-08-21 13:28:04,326 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:28:04,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:28:04,334 INFO L225 Difference]: With dead ends: 3979 [2021-08-21 13:28:04,334 INFO L226 Difference]: Without dead ends: 3912 [2021-08-21 13:28:04,334 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 393 ImplicationChecksByTransitivity, 721.8ms TimeCoverageRelationStatistics Valid=202, Invalid=1868, Unknown=0, NotChecked=0, Total=2070 [2021-08-21 13:28:04,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3912 states. [2021-08-21 13:28:04,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3912 to 3622. [2021-08-21 13:28:04,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3622 states, 3621 states have (on average 3.3512841756420877) internal successors, (12135), 3621 states have internal predecessors, (12135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:28:04,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3622 states to 3622 states and 12135 transitions. [2021-08-21 13:28:04,382 INFO L78 Accepts]: Start accepts. Automaton has 3622 states and 12135 transitions. Word has length 39 [2021-08-21 13:28:04,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:28:04,382 INFO L470 AbstractCegarLoop]: Abstraction has 3622 states and 12135 transitions. [2021-08-21 13:28:04,382 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:28:04,382 INFO L276 IsEmpty]: Start isEmpty. Operand 3622 states and 12135 transitions. [2021-08-21 13:28:04,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:28:04,387 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:28:04,387 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:28:04,387 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2021-08-21 13:28:04,387 INFO L402 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:28:04,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:28:04,387 INFO L82 PathProgramCache]: Analyzing trace with hash 1449765732, now seen corresponding path program 80 times [2021-08-21 13:28:04,387 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:28:04,387 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1597541314] [2021-08-21 13:28:04,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:28:04,387 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:28:04,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:28:04,708 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:28:04,708 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:28:04,708 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1597541314] [2021-08-21 13:28:04,708 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1597541314] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:28:04,708 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:28:04,708 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 13:28:04,708 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748821825] [2021-08-21 13:28:04,708 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 13:28:04,709 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:28:04,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 13:28:04,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-08-21 13:28:04,709 INFO L87 Difference]: Start difference. First operand 3622 states and 12135 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:28:06,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:28:06,139 INFO L93 Difference]: Finished difference Result 4064 states and 13387 transitions. [2021-08-21 13:28:06,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-08-21 13:28:06,139 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:28:06,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:28:06,146 INFO L225 Difference]: With dead ends: 4064 [2021-08-21 13:28:06,147 INFO L226 Difference]: Without dead ends: 4021 [2021-08-21 13:28:06,147 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 640 ImplicationChecksByTransitivity, 966.2ms TimeCoverageRelationStatistics Valid=263, Invalid=2599, Unknown=0, NotChecked=0, Total=2862 [2021-08-21 13:28:06,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4021 states. [2021-08-21 13:28:06,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4021 to 3628. [2021-08-21 13:28:06,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3628 states, 3627 states have (on average 3.3493245106148333) internal successors, (12148), 3627 states have internal predecessors, (12148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:28:06,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3628 states to 3628 states and 12148 transitions. [2021-08-21 13:28:06,193 INFO L78 Accepts]: Start accepts. Automaton has 3628 states and 12148 transitions. Word has length 39 [2021-08-21 13:28:06,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:28:06,194 INFO L470 AbstractCegarLoop]: Abstraction has 3628 states and 12148 transitions. [2021-08-21 13:28:06,194 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:28:06,194 INFO L276 IsEmpty]: Start isEmpty. Operand 3628 states and 12148 transitions. [2021-08-21 13:28:06,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:28:06,198 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:28:06,198 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:28:06,198 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2021-08-21 13:28:06,198 INFO L402 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:28:06,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:28:06,198 INFO L82 PathProgramCache]: Analyzing trace with hash -330832570, now seen corresponding path program 81 times [2021-08-21 13:28:06,199 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:28:06,199 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [174324320] [2021-08-21 13:28:06,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:28:06,199 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:28:06,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:28:06,495 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:28:06,495 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:28:06,495 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [174324320] [2021-08-21 13:28:06,496 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [174324320] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:28:06,496 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:28:06,496 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 13:28:06,496 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962454427] [2021-08-21 13:28:06,496 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 13:28:06,496 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:28:06,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 13:28:06,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-08-21 13:28:06,496 INFO L87 Difference]: Start difference. First operand 3628 states and 12148 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:28:07,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:28:07,941 INFO L93 Difference]: Finished difference Result 4019 states and 13283 transitions. [2021-08-21 13:28:07,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-08-21 13:28:07,941 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:28:07,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:28:07,949 INFO L225 Difference]: With dead ends: 4019 [2021-08-21 13:28:07,949 INFO L226 Difference]: Without dead ends: 3955 [2021-08-21 13:28:07,949 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 603 ImplicationChecksByTransitivity, 958.7ms TimeCoverageRelationStatistics Valid=254, Invalid=2502, Unknown=0, NotChecked=0, Total=2756 [2021-08-21 13:28:07,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3955 states. [2021-08-21 13:28:07,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3955 to 3610. [2021-08-21 13:28:07,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3610 states, 3609 states have (on average 3.3541147132169575) internal successors, (12105), 3609 states have internal predecessors, (12105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:28:07,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3610 states to 3610 states and 12105 transitions. [2021-08-21 13:28:07,995 INFO L78 Accepts]: Start accepts. Automaton has 3610 states and 12105 transitions. Word has length 39 [2021-08-21 13:28:07,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:28:07,995 INFO L470 AbstractCegarLoop]: Abstraction has 3610 states and 12105 transitions. [2021-08-21 13:28:07,995 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:28:07,995 INFO L276 IsEmpty]: Start isEmpty. Operand 3610 states and 12105 transitions. [2021-08-21 13:28:07,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:28:07,999 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:28:07,999 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:28:07,999 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2021-08-21 13:28:08,000 INFO L402 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:28:08,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:28:08,000 INFO L82 PathProgramCache]: Analyzing trace with hash 289601830, now seen corresponding path program 82 times [2021-08-21 13:28:08,000 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:28:08,000 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [334407520] [2021-08-21 13:28:08,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:28:08,000 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:28:08,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:28:08,297 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:28:08,297 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:28:08,297 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [334407520] [2021-08-21 13:28:08,298 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [334407520] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:28:08,298 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:28:08,298 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 13:28:08,298 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [326712496] [2021-08-21 13:28:08,298 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 13:28:08,298 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:28:08,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 13:28:08,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-08-21 13:28:08,298 INFO L87 Difference]: Start difference. First operand 3610 states and 12105 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:28:09,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:28:09,406 INFO L93 Difference]: Finished difference Result 3979 states and 13192 transitions. [2021-08-21 13:28:09,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-08-21 13:28:09,406 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:28:09,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:28:09,414 INFO L225 Difference]: With dead ends: 3979 [2021-08-21 13:28:09,414 INFO L226 Difference]: Without dead ends: 3912 [2021-08-21 13:28:09,414 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 392 ImplicationChecksByTransitivity, 706.7ms TimeCoverageRelationStatistics Valid=201, Invalid=1869, Unknown=0, NotChecked=0, Total=2070 [2021-08-21 13:28:09,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3912 states. [2021-08-21 13:28:09,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3912 to 3618. [2021-08-21 13:28:09,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3618 states, 3617 states have (on average 3.351119712468897) internal successors, (12121), 3617 states have internal predecessors, (12121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:28:09,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3618 states to 3618 states and 12121 transitions. [2021-08-21 13:28:09,460 INFO L78 Accepts]: Start accepts. Automaton has 3618 states and 12121 transitions. Word has length 39 [2021-08-21 13:28:09,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:28:09,460 INFO L470 AbstractCegarLoop]: Abstraction has 3618 states and 12121 transitions. [2021-08-21 13:28:09,460 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:28:09,460 INFO L276 IsEmpty]: Start isEmpty. Operand 3618 states and 12121 transitions. [2021-08-21 13:28:09,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:28:09,465 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:28:09,465 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:28:09,465 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2021-08-21 13:28:09,465 INFO L402 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:28:09,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:28:09,465 INFO L82 PathProgramCache]: Analyzing trace with hash 159006982, now seen corresponding path program 83 times [2021-08-21 13:28:09,465 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:28:09,465 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1574859478] [2021-08-21 13:28:09,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:28:09,465 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:28:09,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:28:09,769 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:28:09,769 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:28:09,769 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1574859478] [2021-08-21 13:28:09,769 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1574859478] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:28:09,769 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:28:09,769 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 13:28:09,769 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [370294005] [2021-08-21 13:28:09,769 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 13:28:09,769 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:28:09,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 13:28:09,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-08-21 13:28:09,770 INFO L87 Difference]: Start difference. First operand 3618 states and 12121 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:28:10,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:28:10,773 INFO L93 Difference]: Finished difference Result 3967 states and 13152 transitions. [2021-08-21 13:28:10,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-08-21 13:28:10,773 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:28:10,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:28:10,780 INFO L225 Difference]: With dead ends: 3967 [2021-08-21 13:28:10,781 INFO L226 Difference]: Without dead ends: 3904 [2021-08-21 13:28:10,781 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 421 ImplicationChecksByTransitivity, 642.0ms TimeCoverageRelationStatistics Valid=208, Invalid=1954, Unknown=0, NotChecked=0, Total=2162 [2021-08-21 13:28:10,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3904 states. [2021-08-21 13:28:10,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3904 to 3610. [2021-08-21 13:28:10,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3610 states, 3609 states have (on average 3.353006372956498) internal successors, (12101), 3609 states have internal predecessors, (12101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:28:10,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3610 states to 3610 states and 12101 transitions. [2021-08-21 13:28:10,831 INFO L78 Accepts]: Start accepts. Automaton has 3610 states and 12101 transitions. Word has length 39 [2021-08-21 13:28:10,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:28:10,831 INFO L470 AbstractCegarLoop]: Abstraction has 3610 states and 12101 transitions. [2021-08-21 13:28:10,831 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:28:10,831 INFO L276 IsEmpty]: Start isEmpty. Operand 3610 states and 12101 transitions. [2021-08-21 13:28:10,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:28:10,836 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:28:10,836 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:28:10,836 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2021-08-21 13:28:10,837 INFO L402 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:28:10,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:28:10,837 INFO L82 PathProgramCache]: Analyzing trace with hash 23328390, now seen corresponding path program 84 times [2021-08-21 13:28:10,837 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:28:10,837 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [959913059] [2021-08-21 13:28:10,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:28:10,837 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:28:10,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:28:11,079 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:28:11,079 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:28:11,079 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [959913059] [2021-08-21 13:28:11,079 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [959913059] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:28:11,079 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:28:11,079 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 13:28:11,080 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [416671355] [2021-08-21 13:28:11,080 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 13:28:11,080 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:28:11,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 13:28:11,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-08-21 13:28:11,080 INFO L87 Difference]: Start difference. First operand 3610 states and 12101 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:28:12,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:28:12,288 INFO L93 Difference]: Finished difference Result 4130 states and 13541 transitions. [2021-08-21 13:28:12,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-08-21 13:28:12,288 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:28:12,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:28:12,296 INFO L225 Difference]: With dead ends: 4130 [2021-08-21 13:28:12,297 INFO L226 Difference]: Without dead ends: 4087 [2021-08-21 13:28:12,297 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 711 ImplicationChecksByTransitivity, 789.3ms TimeCoverageRelationStatistics Valid=281, Invalid=2799, Unknown=0, NotChecked=0, Total=3080 [2021-08-21 13:28:12,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4087 states. [2021-08-21 13:28:12,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4087 to 3618. [2021-08-21 13:28:12,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3618 states, 3617 states have (on average 3.351119712468897) internal successors, (12121), 3617 states have internal predecessors, (12121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:28:12,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3618 states to 3618 states and 12121 transitions. [2021-08-21 13:28:12,350 INFO L78 Accepts]: Start accepts. Automaton has 3618 states and 12121 transitions. Word has length 39 [2021-08-21 13:28:12,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:28:12,354 INFO L470 AbstractCegarLoop]: Abstraction has 3618 states and 12121 transitions. [2021-08-21 13:28:12,354 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:28:12,354 INFO L276 IsEmpty]: Start isEmpty. Operand 3618 states and 12121 transitions. [2021-08-21 13:28:12,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:28:12,359 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:28:12,359 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:28:12,359 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2021-08-21 13:28:12,360 INFO L402 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:28:12,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:28:12,360 INFO L82 PathProgramCache]: Analyzing trace with hash -1757269912, now seen corresponding path program 85 times [2021-08-21 13:28:12,360 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:28:12,360 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1295755708] [2021-08-21 13:28:12,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:28:12,361 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:28:12,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:28:12,671 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:28:12,672 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:28:12,672 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1295755708] [2021-08-21 13:28:12,672 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1295755708] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:28:12,672 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:28:12,672 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 13:28:12,672 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076771986] [2021-08-21 13:28:12,672 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 13:28:12,672 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:28:12,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 13:28:12,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-08-21 13:28:12,672 INFO L87 Difference]: Start difference. First operand 3618 states and 12121 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:28:14,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:28:14,052 INFO L93 Difference]: Finished difference Result 4118 states and 13503 transitions. [2021-08-21 13:28:14,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-08-21 13:28:14,053 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:28:14,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:28:14,062 INFO L225 Difference]: With dead ends: 4118 [2021-08-21 13:28:14,062 INFO L226 Difference]: Without dead ends: 4066 [2021-08-21 13:28:14,063 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 673 ImplicationChecksByTransitivity, 924.8ms TimeCoverageRelationStatistics Valid=273, Invalid=2697, Unknown=0, NotChecked=0, Total=2970 [2021-08-21 13:28:14,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4066 states. [2021-08-21 13:28:14,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4066 to 3610. [2021-08-21 13:28:14,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3610 states, 3609 states have (on average 3.353006372956498) internal successors, (12101), 3609 states have internal predecessors, (12101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:28:14,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3610 states to 3610 states and 12101 transitions. [2021-08-21 13:28:14,122 INFO L78 Accepts]: Start accepts. Automaton has 3610 states and 12101 transitions. Word has length 39 [2021-08-21 13:28:14,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:28:14,122 INFO L470 AbstractCegarLoop]: Abstraction has 3610 states and 12101 transitions. [2021-08-21 13:28:14,122 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:28:14,123 INFO L276 IsEmpty]: Start isEmpty. Operand 3610 states and 12101 transitions. [2021-08-21 13:28:14,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:28:14,129 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:28:14,130 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:28:14,130 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2021-08-21 13:28:14,130 INFO L402 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:28:14,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:28:14,130 INFO L82 PathProgramCache]: Analyzing trace with hash 941811960, now seen corresponding path program 86 times [2021-08-21 13:28:14,131 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:28:14,131 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1785621537] [2021-08-21 13:28:14,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:28:14,131 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:28:14,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:28:14,461 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:28:14,461 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:28:14,461 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1785621537] [2021-08-21 13:28:14,461 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1785621537] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:28:14,461 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:28:14,461 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 13:28:14,461 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525860547] [2021-08-21 13:28:14,461 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 13:28:14,461 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:28:14,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 13:28:14,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-08-21 13:28:14,462 INFO L87 Difference]: Start difference. First operand 3610 states and 12101 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:28:15,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:28:15,696 INFO L93 Difference]: Finished difference Result 4095 states and 13426 transitions. [2021-08-21 13:28:15,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-08-21 13:28:15,696 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:28:15,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:28:15,703 INFO L225 Difference]: With dead ends: 4095 [2021-08-21 13:28:15,703 INFO L226 Difference]: Without dead ends: 4040 [2021-08-21 13:28:15,704 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 480 ImplicationChecksByTransitivity, 803.9ms TimeCoverageRelationStatistics Valid=225, Invalid=2127, Unknown=0, NotChecked=0, Total=2352 [2021-08-21 13:28:15,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4040 states. [2021-08-21 13:28:15,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4040 to 3612. [2021-08-21 13:28:15,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3612 states, 3611 states have (on average 3.3519800609249515) internal successors, (12104), 3611 states have internal predecessors, (12104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:28:15,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3612 states to 3612 states and 12104 transitions. [2021-08-21 13:28:15,749 INFO L78 Accepts]: Start accepts. Automaton has 3612 states and 12104 transitions. Word has length 39 [2021-08-21 13:28:15,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:28:15,749 INFO L470 AbstractCegarLoop]: Abstraction has 3612 states and 12104 transitions. [2021-08-21 13:28:15,749 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:28:15,749 INFO L276 IsEmpty]: Start isEmpty. Operand 3612 states and 12104 transitions. [2021-08-21 13:28:15,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:28:15,753 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:28:15,753 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:28:15,753 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2021-08-21 13:28:15,754 INFO L402 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:28:15,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:28:15,754 INFO L82 PathProgramCache]: Analyzing trace with hash 2114464182, now seen corresponding path program 87 times [2021-08-21 13:28:15,754 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:28:15,754 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [536447686] [2021-08-21 13:28:15,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:28:15,754 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:28:15,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:28:16,053 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:28:16,053 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:28:16,053 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [536447686] [2021-08-21 13:28:16,053 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [536447686] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:28:16,053 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:28:16,053 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 13:28:16,053 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1042631053] [2021-08-21 13:28:16,053 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 13:28:16,054 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:28:16,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 13:28:16,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-08-21 13:28:16,054 INFO L87 Difference]: Start difference. First operand 3612 states and 12104 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:28:17,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:28:17,158 INFO L93 Difference]: Finished difference Result 4030 states and 13274 transitions. [2021-08-21 13:28:17,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-08-21 13:28:17,159 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:28:17,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:28:17,166 INFO L225 Difference]: With dead ends: 4030 [2021-08-21 13:28:17,166 INFO L226 Difference]: Without dead ends: 3984 [2021-08-21 13:28:17,167 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 389 ImplicationChecksByTransitivity, 705.8ms TimeCoverageRelationStatistics Valid=200, Invalid=1870, Unknown=0, NotChecked=0, Total=2070 [2021-08-21 13:28:17,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3984 states. [2021-08-21 13:28:17,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3984 to 3616. [2021-08-21 13:28:17,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3616 states, 3615 states have (on average 3.350484094052559) internal successors, (12112), 3615 states have internal predecessors, (12112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:28:17,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3616 states to 3616 states and 12112 transitions. [2021-08-21 13:28:17,215 INFO L78 Accepts]: Start accepts. Automaton has 3616 states and 12112 transitions. Word has length 39 [2021-08-21 13:28:17,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:28:17,215 INFO L470 AbstractCegarLoop]: Abstraction has 3616 states and 12112 transitions. [2021-08-21 13:28:17,215 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:28:17,215 INFO L276 IsEmpty]: Start isEmpty. Operand 3616 states and 12112 transitions. [2021-08-21 13:28:17,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:28:17,220 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:28:17,220 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:28:17,220 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2021-08-21 13:28:17,220 INFO L402 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:28:17,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:28:17,220 INFO L82 PathProgramCache]: Analyzing trace with hash 1866998020, now seen corresponding path program 88 times [2021-08-21 13:28:17,220 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:28:17,220 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [220108316] [2021-08-21 13:28:17,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:28:17,220 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:28:17,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:28:17,521 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:28:17,521 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:28:17,521 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [220108316] [2021-08-21 13:28:17,522 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [220108316] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:28:17,522 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:28:17,522 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 13:28:17,522 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173487622] [2021-08-21 13:28:17,522 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 13:28:17,522 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:28:17,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 13:28:17,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-08-21 13:28:17,522 INFO L87 Difference]: Start difference. First operand 3616 states and 12112 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:28:18,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:28:18,689 INFO L93 Difference]: Finished difference Result 3990 states and 13185 transitions. [2021-08-21 13:28:18,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-08-21 13:28:18,690 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:28:18,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:28:18,697 INFO L225 Difference]: With dead ends: 3990 [2021-08-21 13:28:18,697 INFO L226 Difference]: Without dead ends: 3941 [2021-08-21 13:28:18,697 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 389 ImplicationChecksByTransitivity, 781.6ms TimeCoverageRelationStatistics Valid=204, Invalid=1866, Unknown=0, NotChecked=0, Total=2070 [2021-08-21 13:28:18,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3941 states. [2021-08-21 13:28:18,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3941 to 3606. [2021-08-21 13:28:18,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3606 states, 3605 states have (on average 3.3539528432732317) internal successors, (12091), 3605 states have internal predecessors, (12091), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:28:18,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3606 states to 3606 states and 12091 transitions. [2021-08-21 13:28:18,741 INFO L78 Accepts]: Start accepts. Automaton has 3606 states and 12091 transitions. Word has length 39 [2021-08-21 13:28:18,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:28:18,741 INFO L470 AbstractCegarLoop]: Abstraction has 3606 states and 12091 transitions. [2021-08-21 13:28:18,741 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:28:18,741 INFO L276 IsEmpty]: Start isEmpty. Operand 3606 states and 12091 transitions. [2021-08-21 13:28:18,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:28:18,746 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:28:18,746 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:28:18,746 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2021-08-21 13:28:18,746 INFO L402 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:28:18,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:28:18,746 INFO L82 PathProgramCache]: Analyzing trace with hash -889093754, now seen corresponding path program 89 times [2021-08-21 13:28:18,746 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:28:18,746 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1289023331] [2021-08-21 13:28:18,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:28:18,746 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:28:18,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:28:19,039 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:28:19,039 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:28:19,039 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1289023331] [2021-08-21 13:28:19,039 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1289023331] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:28:19,039 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:28:19,039 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 13:28:19,040 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838882857] [2021-08-21 13:28:19,040 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 13:28:19,040 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:28:19,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 13:28:19,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-08-21 13:28:19,040 INFO L87 Difference]: Start difference. First operand 3606 states and 12091 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:28:20,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:28:20,100 INFO L93 Difference]: Finished difference Result 4037 states and 13379 transitions. [2021-08-21 13:28:20,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-08-21 13:28:20,101 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:28:20,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:28:20,110 INFO L225 Difference]: With dead ends: 4037 [2021-08-21 13:28:20,110 INFO L226 Difference]: Without dead ends: 3970 [2021-08-21 13:28:20,110 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 287 ImplicationChecksByTransitivity, 624.5ms TimeCoverageRelationStatistics Valid=167, Invalid=1555, Unknown=0, NotChecked=0, Total=1722 [2021-08-21 13:28:20,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3970 states. [2021-08-21 13:28:20,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3970 to 3646. [2021-08-21 13:28:20,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3646 states, 3645 states have (on average 3.3467764060356653) internal successors, (12199), 3645 states have internal predecessors, (12199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:28:20,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3646 states to 3646 states and 12199 transitions. [2021-08-21 13:28:20,158 INFO L78 Accepts]: Start accepts. Automaton has 3646 states and 12199 transitions. Word has length 39 [2021-08-21 13:28:20,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:28:20,158 INFO L470 AbstractCegarLoop]: Abstraction has 3646 states and 12199 transitions. [2021-08-21 13:28:20,158 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:28:20,158 INFO L276 IsEmpty]: Start isEmpty. Operand 3646 states and 12199 transitions. [2021-08-21 13:28:20,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:28:20,163 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:28:20,163 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:28:20,163 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2021-08-21 13:28:20,163 INFO L402 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:28:20,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:28:20,163 INFO L82 PathProgramCache]: Analyzing trace with hash -1019688602, now seen corresponding path program 90 times [2021-08-21 13:28:20,163 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:28:20,163 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1644396759] [2021-08-21 13:28:20,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:28:20,164 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:28:20,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:28:20,464 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:28:20,464 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:28:20,464 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1644396759] [2021-08-21 13:28:20,464 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1644396759] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:28:20,464 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:28:20,464 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 13:28:20,464 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1392178622] [2021-08-21 13:28:20,464 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 13:28:20,464 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:28:20,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 13:28:20,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-08-21 13:28:20,465 INFO L87 Difference]: Start difference. First operand 3646 states and 12199 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:28:21,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:28:21,519 INFO L93 Difference]: Finished difference Result 4025 states and 13339 transitions. [2021-08-21 13:28:21,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-08-21 13:28:21,519 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:28:21,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:28:21,527 INFO L225 Difference]: With dead ends: 4025 [2021-08-21 13:28:21,527 INFO L226 Difference]: Without dead ends: 3962 [2021-08-21 13:28:21,527 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 286 ImplicationChecksByTransitivity, 617.4ms TimeCoverageRelationStatistics Valid=169, Invalid=1553, Unknown=0, NotChecked=0, Total=1722 [2021-08-21 13:28:21,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3962 states. [2021-08-21 13:28:21,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3962 to 3638. [2021-08-21 13:28:21,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3638 states, 3637 states have (on average 3.3475391806433876) internal successors, (12175), 3637 states have internal predecessors, (12175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:28:21,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3638 states to 3638 states and 12175 transitions. [2021-08-21 13:28:21,573 INFO L78 Accepts]: Start accepts. Automaton has 3638 states and 12175 transitions. Word has length 39 [2021-08-21 13:28:21,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:28:21,573 INFO L470 AbstractCegarLoop]: Abstraction has 3638 states and 12175 transitions. [2021-08-21 13:28:21,573 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:28:21,573 INFO L276 IsEmpty]: Start isEmpty. Operand 3638 states and 12175 transitions. [2021-08-21 13:28:21,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:28:21,578 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:28:21,578 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:28:21,578 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2021-08-21 13:28:21,578 INFO L402 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:28:21,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:28:21,578 INFO L82 PathProgramCache]: Analyzing trace with hash -1549589050, now seen corresponding path program 91 times [2021-08-21 13:28:21,578 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:28:21,578 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1109338501] [2021-08-21 13:28:21,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:28:21,578 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:28:21,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:28:21,848 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:28:21,848 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:28:21,848 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1109338501] [2021-08-21 13:28:21,849 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1109338501] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:28:21,849 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:28:21,849 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 13:28:21,849 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1083468127] [2021-08-21 13:28:21,849 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 13:28:21,849 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:28:21,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 13:28:21,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-08-21 13:28:21,856 INFO L87 Difference]: Start difference. First operand 3638 states and 12175 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:28:22,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:28:22,789 INFO L93 Difference]: Finished difference Result 4037 states and 13367 transitions. [2021-08-21 13:28:22,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-08-21 13:28:22,789 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:28:22,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:28:22,797 INFO L225 Difference]: With dead ends: 4037 [2021-08-21 13:28:22,797 INFO L226 Difference]: Without dead ends: 3914 [2021-08-21 13:28:22,798 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 285 ImplicationChecksByTransitivity, 529.4ms TimeCoverageRelationStatistics Valid=165, Invalid=1557, Unknown=0, NotChecked=0, Total=1722 [2021-08-21 13:28:22,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3914 states. [2021-08-21 13:28:22,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3914 to 3606. [2021-08-21 13:28:22,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3606 states, 3605 states have (on average 3.349514563106796) internal successors, (12075), 3605 states have internal predecessors, (12075), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:28:22,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3606 states to 3606 states and 12075 transitions. [2021-08-21 13:28:22,846 INFO L78 Accepts]: Start accepts. Automaton has 3606 states and 12075 transitions. Word has length 39 [2021-08-21 13:28:22,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:28:22,846 INFO L470 AbstractCegarLoop]: Abstraction has 3606 states and 12075 transitions. [2021-08-21 13:28:22,846 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:28:22,847 INFO L276 IsEmpty]: Start isEmpty. Operand 3606 states and 12075 transitions. [2021-08-21 13:28:22,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:28:22,851 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:28:22,851 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:28:22,851 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2021-08-21 13:28:22,852 INFO L402 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:28:22,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:28:22,852 INFO L82 PathProgramCache]: Analyzing trace with hash 2026967076, now seen corresponding path program 92 times [2021-08-21 13:28:22,852 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:28:22,852 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [672232393] [2021-08-21 13:28:22,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:28:22,852 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:28:22,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:28:23,051 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:28:23,051 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:28:23,051 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [672232393] [2021-08-21 13:28:23,051 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [672232393] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:28:23,051 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:28:23,051 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 13:28:23,051 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257308883] [2021-08-21 13:28:23,052 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 13:28:23,052 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:28:23,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 13:28:23,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-08-21 13:28:23,052 INFO L87 Difference]: Start difference. First operand 3606 states and 12075 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:28:24,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:28:24,299 INFO L93 Difference]: Finished difference Result 5612 states and 19007 transitions. [2021-08-21 13:28:24,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-08-21 13:28:24,300 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:28:24,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:28:24,312 INFO L225 Difference]: With dead ends: 5612 [2021-08-21 13:28:24,312 INFO L226 Difference]: Without dead ends: 5569 [2021-08-21 13:28:24,312 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 705 ImplicationChecksByTransitivity, 694.6ms TimeCoverageRelationStatistics Valid=279, Invalid=2801, Unknown=0, NotChecked=0, Total=3080 [2021-08-21 13:28:24,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5569 states. [2021-08-21 13:28:24,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5569 to 3620. [2021-08-21 13:28:24,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3620 states, 3619 states have (on average 3.3478861563967945) internal successors, (12116), 3619 states have internal predecessors, (12116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:28:24,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3620 states to 3620 states and 12116 transitions. [2021-08-21 13:28:24,374 INFO L78 Accepts]: Start accepts. Automaton has 3620 states and 12116 transitions. Word has length 39 [2021-08-21 13:28:24,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:28:24,374 INFO L470 AbstractCegarLoop]: Abstraction has 3620 states and 12116 transitions. [2021-08-21 13:28:24,374 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:28:24,374 INFO L276 IsEmpty]: Start isEmpty. Operand 3620 states and 12116 transitions. [2021-08-21 13:28:24,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:28:24,379 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:28:24,379 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:28:24,379 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2021-08-21 13:28:24,379 INFO L402 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:28:24,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:28:24,379 INFO L82 PathProgramCache]: Analyzing trace with hash 246368774, now seen corresponding path program 93 times [2021-08-21 13:28:24,379 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:28:24,379 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1831512687] [2021-08-21 13:28:24,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:28:24,380 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:28:24,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:28:24,632 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:28:24,633 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:28:24,633 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1831512687] [2021-08-21 13:28:24,633 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1831512687] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:28:24,633 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:28:24,633 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 13:28:24,633 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1353082964] [2021-08-21 13:28:24,633 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 13:28:24,633 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:28:24,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 13:28:24,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-08-21 13:28:24,633 INFO L87 Difference]: Start difference. First operand 3620 states and 12116 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:28:26,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:28:26,715 INFO L93 Difference]: Finished difference Result 6473 states and 21937 transitions. [2021-08-21 13:28:26,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2021-08-21 13:28:26,715 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:28:26,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:28:26,728 INFO L225 Difference]: With dead ends: 6473 [2021-08-21 13:28:26,728 INFO L226 Difference]: Without dead ends: 6421 [2021-08-21 13:28:26,729 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 947 ImplicationChecksByTransitivity, 1125.9ms TimeCoverageRelationStatistics Valid=321, Invalid=3461, Unknown=0, NotChecked=0, Total=3782 [2021-08-21 13:28:26,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6421 states. [2021-08-21 13:28:26,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6421 to 3606. [2021-08-21 13:28:26,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3606 states, 3605 states have (on average 3.349514563106796) internal successors, (12075), 3605 states have internal predecessors, (12075), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:28:26,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3606 states to 3606 states and 12075 transitions. [2021-08-21 13:28:26,792 INFO L78 Accepts]: Start accepts. Automaton has 3606 states and 12075 transitions. Word has length 39 [2021-08-21 13:28:26,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:28:26,792 INFO L470 AbstractCegarLoop]: Abstraction has 3606 states and 12075 transitions. [2021-08-21 13:28:26,792 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:28:26,792 INFO L276 IsEmpty]: Start isEmpty. Operand 3606 states and 12075 transitions. [2021-08-21 13:28:26,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:28:26,797 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:28:26,797 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:28:26,797 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2021-08-21 13:28:26,797 INFO L402 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:28:26,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:28:26,797 INFO L82 PathProgramCache]: Analyzing trace with hash -1349516650, now seen corresponding path program 94 times [2021-08-21 13:28:26,797 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:28:26,797 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1237228610] [2021-08-21 13:28:26,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:28:26,798 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:28:26,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:28:27,094 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:28:27,095 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:28:27,095 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1237228610] [2021-08-21 13:28:27,095 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1237228610] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:28:27,095 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:28:27,095 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 13:28:27,095 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632681541] [2021-08-21 13:28:27,095 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 13:28:27,095 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:28:27,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 13:28:27,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-08-21 13:28:27,096 INFO L87 Difference]: Start difference. First operand 3606 states and 12075 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:28:28,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:28:28,521 INFO L93 Difference]: Finished difference Result 5417 states and 18181 transitions. [2021-08-21 13:28:28,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-08-21 13:28:28,522 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:28:28,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:28:28,533 INFO L225 Difference]: With dead ends: 5417 [2021-08-21 13:28:28,533 INFO L226 Difference]: Without dead ends: 5362 [2021-08-21 13:28:28,533 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 444 ImplicationChecksByTransitivity, 757.6ms TimeCoverageRelationStatistics Valid=218, Invalid=2038, Unknown=0, NotChecked=0, Total=2256 [2021-08-21 13:28:28,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5362 states. [2021-08-21 13:28:28,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5362 to 3614. [2021-08-21 13:28:28,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3614 states, 3613 states have (on average 3.3487406587323556) internal successors, (12099), 3613 states have internal predecessors, (12099), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:28:28,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3614 states to 3614 states and 12099 transitions. [2021-08-21 13:28:28,640 INFO L78 Accepts]: Start accepts. Automaton has 3614 states and 12099 transitions. Word has length 39 [2021-08-21 13:28:28,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:28:28,640 INFO L470 AbstractCegarLoop]: Abstraction has 3614 states and 12099 transitions. [2021-08-21 13:28:28,640 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:28:28,640 INFO L276 IsEmpty]: Start isEmpty. Operand 3614 states and 12099 transitions. [2021-08-21 13:28:28,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:28:28,645 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:28:28,645 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:28:28,645 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2021-08-21 13:28:28,645 INFO L402 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:28:28,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:28:28,645 INFO L82 PathProgramCache]: Analyzing trace with hash -176864428, now seen corresponding path program 95 times [2021-08-21 13:28:28,646 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:28:28,646 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1962551675] [2021-08-21 13:28:28,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:28:28,646 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:28:28,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:28:28,946 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:28:28,946 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:28:28,946 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1962551675] [2021-08-21 13:28:28,946 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1962551675] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:28:28,946 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:28:28,946 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 13:28:28,946 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [621567970] [2021-08-21 13:28:28,946 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 13:28:28,946 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:28:28,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 13:28:28,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-08-21 13:28:28,947 INFO L87 Difference]: Start difference. First operand 3614 states and 12099 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:28:30,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:28:30,650 INFO L93 Difference]: Finished difference Result 6278 states and 21115 transitions. [2021-08-21 13:28:30,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-08-21 13:28:30,651 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:28:30,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:28:30,663 INFO L225 Difference]: With dead ends: 6278 [2021-08-21 13:28:30,663 INFO L226 Difference]: Without dead ends: 6218 [2021-08-21 13:28:30,664 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 606 ImplicationChecksByTransitivity, 884.2ms TimeCoverageRelationStatistics Valid=249, Invalid=2507, Unknown=0, NotChecked=0, Total=2756 [2021-08-21 13:28:30,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6218 states. [2021-08-21 13:28:30,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6218 to 3612. [2021-08-21 13:28:30,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3612 states, 3611 states have (on average 3.3492107449459985) internal successors, (12094), 3611 states have internal predecessors, (12094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:28:30,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3612 states to 3612 states and 12094 transitions. [2021-08-21 13:28:30,726 INFO L78 Accepts]: Start accepts. Automaton has 3612 states and 12094 transitions. Word has length 39 [2021-08-21 13:28:30,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:28:30,726 INFO L470 AbstractCegarLoop]: Abstraction has 3612 states and 12094 transitions. [2021-08-21 13:28:30,726 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:28:30,726 INFO L276 IsEmpty]: Start isEmpty. Operand 3612 states and 12094 transitions. [2021-08-21 13:28:30,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:28:30,731 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:28:30,731 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:28:30,731 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2021-08-21 13:28:30,731 INFO L402 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:28:30,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:28:30,731 INFO L82 PathProgramCache]: Analyzing trace with hash -2054268030, now seen corresponding path program 96 times [2021-08-21 13:28:30,731 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:28:30,731 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [490009604] [2021-08-21 13:28:30,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:28:30,732 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:28:30,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:28:31,034 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:28:31,035 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:28:31,035 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [490009604] [2021-08-21 13:28:31,035 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [490009604] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:28:31,035 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:28:31,035 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 13:28:31,035 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [771223773] [2021-08-21 13:28:31,035 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 13:28:31,035 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:28:31,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 13:28:31,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-08-21 13:28:31,036 INFO L87 Difference]: Start difference. First operand 3612 states and 12094 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:28:32,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:28:32,442 INFO L93 Difference]: Finished difference Result 5378 states and 18115 transitions. [2021-08-21 13:28:32,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-08-21 13:28:32,442 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:28:32,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:28:32,453 INFO L225 Difference]: With dead ends: 5378 [2021-08-21 13:28:32,453 INFO L226 Difference]: Without dead ends: 5287 [2021-08-21 13:28:32,453 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 417 ImplicationChecksByTransitivity, 720.3ms TimeCoverageRelationStatistics Valid=203, Invalid=1959, Unknown=0, NotChecked=0, Total=2162 [2021-08-21 13:28:32,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5287 states. [2021-08-21 13:28:32,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5287 to 3612. [2021-08-21 13:28:32,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3612 states, 3611 states have (on average 3.3475491553586263) internal successors, (12088), 3611 states have internal predecessors, (12088), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:28:32,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3612 states to 3612 states and 12088 transitions. [2021-08-21 13:28:32,506 INFO L78 Accepts]: Start accepts. Automaton has 3612 states and 12088 transitions. Word has length 39 [2021-08-21 13:28:32,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:28:32,506 INFO L470 AbstractCegarLoop]: Abstraction has 3612 states and 12088 transitions. [2021-08-21 13:28:32,506 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:28:32,506 INFO L276 IsEmpty]: Start isEmpty. Operand 3612 states and 12088 transitions. [2021-08-21 13:28:32,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:28:32,510 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:28:32,510 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:28:32,510 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2021-08-21 13:28:32,511 INFO L402 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:28:32,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:28:32,511 INFO L82 PathProgramCache]: Analyzing trace with hash 738217060, now seen corresponding path program 97 times [2021-08-21 13:28:32,511 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:28:32,511 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1235424999] [2021-08-21 13:28:32,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:28:32,511 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:28:32,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:28:32,808 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:28:32,809 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:28:32,809 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1235424999] [2021-08-21 13:28:32,809 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1235424999] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:28:32,809 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:28:32,809 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 13:28:32,809 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420530142] [2021-08-21 13:28:32,809 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 13:28:32,809 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:28:32,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 13:28:32,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-08-21 13:28:32,809 INFO L87 Difference]: Start difference. First operand 3612 states and 12088 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:28:34,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:28:34,497 INFO L93 Difference]: Finished difference Result 6191 states and 20917 transitions. [2021-08-21 13:28:34,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-08-21 13:28:34,498 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:28:34,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:28:34,509 INFO L225 Difference]: With dead ends: 6191 [2021-08-21 13:28:34,509 INFO L226 Difference]: Without dead ends: 6075 [2021-08-21 13:28:34,509 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 534 ImplicationChecksByTransitivity, 877.4ms TimeCoverageRelationStatistics Valid=228, Invalid=2322, Unknown=0, NotChecked=0, Total=2550 [2021-08-21 13:28:34,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6075 states. [2021-08-21 13:28:34,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6075 to 3590. [2021-08-21 13:28:34,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3590 states, 3589 states have (on average 3.353859013652828) internal successors, (12037), 3589 states have internal predecessors, (12037), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:28:34,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3590 states to 3590 states and 12037 transitions. [2021-08-21 13:28:34,562 INFO L78 Accepts]: Start accepts. Automaton has 3590 states and 12037 transitions. Word has length 39 [2021-08-21 13:28:34,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:28:34,562 INFO L470 AbstractCegarLoop]: Abstraction has 3590 states and 12037 transitions. [2021-08-21 13:28:34,562 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:28:34,562 INFO L276 IsEmpty]: Start isEmpty. Operand 3590 states and 12037 transitions. [2021-08-21 13:28:34,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:28:34,566 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:28:34,566 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:28:34,566 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2021-08-21 13:28:34,566 INFO L402 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:28:34,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:28:34,567 INFO L82 PathProgramCache]: Analyzing trace with hash 1367450324, now seen corresponding path program 98 times [2021-08-21 13:28:34,567 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:28:34,567 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [629490383] [2021-08-21 13:28:34,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:28:34,567 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:28:34,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:28:34,862 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:28:34,862 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:28:34,862 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [629490383] [2021-08-21 13:28:34,862 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [629490383] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:28:34,863 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:28:34,863 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 13:28:34,863 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878781541] [2021-08-21 13:28:34,863 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 13:28:34,863 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:28:34,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 13:28:34,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-08-21 13:28:34,863 INFO L87 Difference]: Start difference. First operand 3590 states and 12037 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:28:35,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:28:35,764 INFO L93 Difference]: Finished difference Result 3901 states and 12905 transitions. [2021-08-21 13:28:35,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-08-21 13:28:35,764 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:28:35,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:28:35,772 INFO L225 Difference]: With dead ends: 3901 [2021-08-21 13:28:35,772 INFO L226 Difference]: Without dead ends: 3834 [2021-08-21 13:28:35,772 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 245 ImplicationChecksByTransitivity, 596.5ms TimeCoverageRelationStatistics Valid=155, Invalid=1405, Unknown=0, NotChecked=0, Total=1560 [2021-08-21 13:28:35,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3834 states. [2021-08-21 13:28:35,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3834 to 3646. [2021-08-21 13:28:35,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3646 states, 3645 states have (on average 3.342935528120713) internal successors, (12185), 3645 states have internal predecessors, (12185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:28:35,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3646 states to 3646 states and 12185 transitions. [2021-08-21 13:28:35,822 INFO L78 Accepts]: Start accepts. Automaton has 3646 states and 12185 transitions. Word has length 39 [2021-08-21 13:28:35,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:28:35,822 INFO L470 AbstractCegarLoop]: Abstraction has 3646 states and 12185 transitions. [2021-08-21 13:28:35,822 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:28:35,822 INFO L276 IsEmpty]: Start isEmpty. Operand 3646 states and 12185 transitions. [2021-08-21 13:28:35,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:28:35,828 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:28:35,828 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:28:35,828 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2021-08-21 13:28:35,829 INFO L402 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:28:35,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:28:35,829 INFO L82 PathProgramCache]: Analyzing trace with hash 1195307106, now seen corresponding path program 99 times [2021-08-21 13:28:35,829 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:28:35,829 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1090670613] [2021-08-21 13:28:35,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:28:35,829 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:28:35,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:28:36,134 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:28:36,134 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:28:36,134 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1090670613] [2021-08-21 13:28:36,134 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1090670613] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:28:36,134 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:28:36,134 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 13:28:36,135 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840519587] [2021-08-21 13:28:36,135 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 13:28:36,135 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:28:36,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 13:28:36,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-08-21 13:28:36,135 INFO L87 Difference]: Start difference. First operand 3646 states and 12185 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:28:37,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:28:37,055 INFO L93 Difference]: Finished difference Result 3889 states and 12865 transitions. [2021-08-21 13:28:37,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-08-21 13:28:37,055 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:28:37,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:28:37,063 INFO L225 Difference]: With dead ends: 3889 [2021-08-21 13:28:37,063 INFO L226 Difference]: Without dead ends: 3826 [2021-08-21 13:28:37,063 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 245 ImplicationChecksByTransitivity, 608.0ms TimeCoverageRelationStatistics Valid=154, Invalid=1406, Unknown=0, NotChecked=0, Total=1560 [2021-08-21 13:28:37,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3826 states. [2021-08-21 13:28:37,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3826 to 3638. [2021-08-21 13:28:37,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3638 states, 3637 states have (on average 3.343689854275502) internal successors, (12161), 3637 states have internal predecessors, (12161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:28:37,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3638 states to 3638 states and 12161 transitions. [2021-08-21 13:28:37,147 INFO L78 Accepts]: Start accepts. Automaton has 3638 states and 12161 transitions. Word has length 39 [2021-08-21 13:28:37,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:28:37,147 INFO L470 AbstractCegarLoop]: Abstraction has 3638 states and 12161 transitions. [2021-08-21 13:28:37,147 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:28:37,148 INFO L276 IsEmpty]: Start isEmpty. Operand 3638 states and 12161 transitions. [2021-08-21 13:28:37,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:28:37,152 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:28:37,152 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:28:37,152 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2021-08-21 13:28:37,153 INFO L402 AbstractCegarLoop]: === Iteration 100 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:28:37,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:28:37,153 INFO L82 PathProgramCache]: Analyzing trace with hash -607527050, now seen corresponding path program 100 times [2021-08-21 13:28:37,153 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:28:37,153 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [895490060] [2021-08-21 13:28:37,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:28:37,153 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:28:37,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:28:37,415 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:28:37,416 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:28:37,416 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [895490060] [2021-08-21 13:28:37,416 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [895490060] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:28:37,416 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:28:37,416 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 13:28:37,416 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076620923] [2021-08-21 13:28:37,416 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 13:28:37,416 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:28:37,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 13:28:37,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-08-21 13:28:37,416 INFO L87 Difference]: Start difference. First operand 3638 states and 12161 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:28:38,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:28:38,294 INFO L93 Difference]: Finished difference Result 3889 states and 12857 transitions. [2021-08-21 13:28:38,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-08-21 13:28:38,294 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:28:38,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:28:38,302 INFO L225 Difference]: With dead ends: 3889 [2021-08-21 13:28:38,302 INFO L226 Difference]: Without dead ends: 3754 [2021-08-21 13:28:38,303 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 243 ImplicationChecksByTransitivity, 557.8ms TimeCoverageRelationStatistics Valid=152, Invalid=1408, Unknown=0, NotChecked=0, Total=1560 [2021-08-21 13:28:38,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3754 states. [2021-08-21 13:28:38,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3754 to 3594. [2021-08-21 13:28:38,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3594 states, 3593 states have (on average 3.3523517951572503) internal successors, (12045), 3593 states have internal predecessors, (12045), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:28:38,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3594 states to 3594 states and 12045 transitions. [2021-08-21 13:28:38,355 INFO L78 Accepts]: Start accepts. Automaton has 3594 states and 12045 transitions. Word has length 39 [2021-08-21 13:28:38,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:28:38,355 INFO L470 AbstractCegarLoop]: Abstraction has 3594 states and 12045 transitions. [2021-08-21 13:28:38,355 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:28:38,355 INFO L276 IsEmpty]: Start isEmpty. Operand 3594 states and 12045 transitions. [2021-08-21 13:28:38,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:28:38,361 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:28:38,361 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:28:38,361 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2021-08-21 13:28:38,361 INFO L402 AbstractCegarLoop]: === Iteration 101 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:28:38,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:28:38,361 INFO L82 PathProgramCache]: Analyzing trace with hash -28107814, now seen corresponding path program 101 times [2021-08-21 13:28:38,361 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:28:38,361 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [372216798] [2021-08-21 13:28:38,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:28:38,362 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:28:38,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:28:38,582 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:28:38,583 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:28:38,583 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [372216798] [2021-08-21 13:28:38,583 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [372216798] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:28:38,583 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:28:38,583 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 13:28:38,583 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977705673] [2021-08-21 13:28:38,583 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 13:28:38,584 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:28:38,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 13:28:38,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-08-21 13:28:38,584 INFO L87 Difference]: Start difference. First operand 3594 states and 12045 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:28:39,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:28:39,294 INFO L93 Difference]: Finished difference Result 3825 states and 12693 transitions. [2021-08-21 13:28:39,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-08-21 13:28:39,294 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:28:39,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:28:39,302 INFO L225 Difference]: With dead ends: 3825 [2021-08-21 13:28:39,302 INFO L226 Difference]: Without dead ends: 3758 [2021-08-21 13:28:39,302 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 223 ImplicationChecksByTransitivity, 461.8ms TimeCoverageRelationStatistics Valid=143, Invalid=1339, Unknown=0, NotChecked=0, Total=1482 [2021-08-21 13:28:39,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3758 states. [2021-08-21 13:28:39,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3758 to 3650. [2021-08-21 13:28:39,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3650 states, 3649 states have (on average 3.341463414634146) internal successors, (12193), 3649 states have internal predecessors, (12193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:28:39,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3650 states to 3650 states and 12193 transitions. [2021-08-21 13:28:39,352 INFO L78 Accepts]: Start accepts. Automaton has 3650 states and 12193 transitions. Word has length 39 [2021-08-21 13:28:39,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:28:39,352 INFO L470 AbstractCegarLoop]: Abstraction has 3650 states and 12193 transitions. [2021-08-21 13:28:39,352 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:28:39,352 INFO L276 IsEmpty]: Start isEmpty. Operand 3650 states and 12193 transitions. [2021-08-21 13:28:39,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:28:39,358 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:28:39,358 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:28:39,358 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2021-08-21 13:28:39,358 INFO L402 AbstractCegarLoop]: === Iteration 102 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:28:39,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:28:39,358 INFO L82 PathProgramCache]: Analyzing trace with hash -200251032, now seen corresponding path program 102 times [2021-08-21 13:28:39,358 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:28:39,358 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1825471683] [2021-08-21 13:28:39,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:28:39,358 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:28:39,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:28:39,684 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:28:39,685 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:28:39,685 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1825471683] [2021-08-21 13:28:39,685 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1825471683] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:28:39,685 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:28:39,685 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 13:28:39,685 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873812698] [2021-08-21 13:28:39,685 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 13:28:39,685 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:28:39,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 13:28:39,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-08-21 13:28:39,685 INFO L87 Difference]: Start difference. First operand 3650 states and 12193 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:28:40,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:28:40,528 INFO L93 Difference]: Finished difference Result 3813 states and 12653 transitions. [2021-08-21 13:28:40,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-08-21 13:28:40,528 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:28:40,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:28:40,536 INFO L225 Difference]: With dead ends: 3813 [2021-08-21 13:28:40,537 INFO L226 Difference]: Without dead ends: 3750 [2021-08-21 13:28:40,537 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 223 ImplicationChecksByTransitivity, 557.0ms TimeCoverageRelationStatistics Valid=143, Invalid=1339, Unknown=0, NotChecked=0, Total=1482 [2021-08-21 13:28:40,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3750 states. [2021-08-21 13:28:40,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3750 to 3642. [2021-08-21 13:28:40,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3642 states, 3641 states have (on average 3.3422136775611095) internal successors, (12169), 3641 states have internal predecessors, (12169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:28:40,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3642 states to 3642 states and 12169 transitions. [2021-08-21 13:28:40,590 INFO L78 Accepts]: Start accepts. Automaton has 3642 states and 12169 transitions. Word has length 39 [2021-08-21 13:28:40,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:28:40,590 INFO L470 AbstractCegarLoop]: Abstraction has 3642 states and 12169 transitions. [2021-08-21 13:28:40,591 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:28:40,591 INFO L276 IsEmpty]: Start isEmpty. Operand 3642 states and 12169 transitions. [2021-08-21 13:28:40,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:28:40,596 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:28:40,596 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:28:40,596 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2021-08-21 13:28:40,596 INFO L402 AbstractCegarLoop]: === Iteration 103 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:28:40,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:28:40,596 INFO L82 PathProgramCache]: Analyzing trace with hash -2003085188, now seen corresponding path program 103 times [2021-08-21 13:28:40,596 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:28:40,596 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1662228796] [2021-08-21 13:28:40,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:28:40,597 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:28:40,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:28:40,918 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:28:40,918 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:28:40,918 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1662228796] [2021-08-21 13:28:40,918 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1662228796] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:28:40,918 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:28:40,918 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 13:28:40,918 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1558470130] [2021-08-21 13:28:40,918 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 13:28:40,919 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:28:40,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 13:28:40,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-08-21 13:28:40,919 INFO L87 Difference]: Start difference. First operand 3642 states and 12169 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:28:41,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:28:41,836 INFO L93 Difference]: Finished difference Result 3813 states and 12645 transitions. [2021-08-21 13:28:41,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-08-21 13:28:41,837 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:28:41,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:28:41,844 INFO L225 Difference]: With dead ends: 3813 [2021-08-21 13:28:41,844 INFO L226 Difference]: Without dead ends: 3662 [2021-08-21 13:28:41,844 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 221 ImplicationChecksByTransitivity, 595.2ms TimeCoverageRelationStatistics Valid=142, Invalid=1340, Unknown=0, NotChecked=0, Total=1482 [2021-08-21 13:28:41,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3662 states. [2021-08-21 13:28:41,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3662 to 3582. [2021-08-21 13:28:41,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3582 states, 3581 states have (on average 3.3557665456576373) internal successors, (12017), 3581 states have internal predecessors, (12017), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:28:41,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3582 states to 3582 states and 12017 transitions. [2021-08-21 13:28:41,891 INFO L78 Accepts]: Start accepts. Automaton has 3582 states and 12017 transitions. Word has length 39 [2021-08-21 13:28:41,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:28:41,891 INFO L470 AbstractCegarLoop]: Abstraction has 3582 states and 12017 transitions. [2021-08-21 13:28:41,891 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:28:41,891 INFO L276 IsEmpty]: Start isEmpty. Operand 3582 states and 12017 transitions. [2021-08-21 13:28:41,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:28:41,896 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:28:41,896 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:28:41,896 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2021-08-21 13:28:41,896 INFO L402 AbstractCegarLoop]: === Iteration 104 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:28:41,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:28:41,896 INFO L82 PathProgramCache]: Analyzing trace with hash 1826084602, now seen corresponding path program 104 times [2021-08-21 13:28:41,896 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:28:41,896 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1756986185] [2021-08-21 13:28:41,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:28:41,897 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:28:41,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:28:42,157 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:28:42,157 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:28:42,157 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1756986185] [2021-08-21 13:28:42,157 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1756986185] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:28:42,157 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:28:42,157 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-08-21 13:28:42,157 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773191005] [2021-08-21 13:28:42,157 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-08-21 13:28:42,157 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:28:42,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-08-21 13:28:42,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2021-08-21 13:28:42,158 INFO L87 Difference]: Start difference. First operand 3582 states and 12017 transitions. Second operand has 15 states, 15 states have (on average 2.6) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:28:43,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:28:43,254 INFO L93 Difference]: Finished difference Result 4145 states and 13826 transitions. [2021-08-21 13:28:43,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-08-21 13:28:43,254 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.6) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:28:43,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:28:43,263 INFO L225 Difference]: With dead ends: 4145 [2021-08-21 13:28:43,263 INFO L226 Difference]: Without dead ends: 4066 [2021-08-21 13:28:43,263 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 417 ImplicationChecksByTransitivity, 655.3ms TimeCoverageRelationStatistics Valid=209, Invalid=1771, Unknown=0, NotChecked=0, Total=1980 [2021-08-21 13:28:43,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4066 states. [2021-08-21 13:28:43,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4066 to 3658. [2021-08-21 13:28:43,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3658 states, 3657 states have (on average 3.3511074651353567) internal successors, (12255), 3657 states have internal predecessors, (12255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:28:43,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3658 states to 3658 states and 12255 transitions. [2021-08-21 13:28:43,320 INFO L78 Accepts]: Start accepts. Automaton has 3658 states and 12255 transitions. Word has length 39 [2021-08-21 13:28:43,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:28:43,320 INFO L470 AbstractCegarLoop]: Abstraction has 3658 states and 12255 transitions. [2021-08-21 13:28:43,320 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.6) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:28:43,320 INFO L276 IsEmpty]: Start isEmpty. Operand 3658 states and 12255 transitions. [2021-08-21 13:28:43,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:28:43,326 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:28:43,326 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:28:43,326 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2021-08-21 13:28:43,326 INFO L402 AbstractCegarLoop]: === Iteration 105 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:28:43,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:28:43,326 INFO L82 PathProgramCache]: Analyzing trace with hash -2082945286, now seen corresponding path program 105 times [2021-08-21 13:28:43,327 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:28:43,327 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1513396055] [2021-08-21 13:28:43,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:28:43,327 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:28:43,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:28:43,596 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:28:43,596 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:28:43,596 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1513396055] [2021-08-21 13:28:43,597 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1513396055] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:28:43,597 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:28:43,597 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-08-21 13:28:43,597 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1392926468] [2021-08-21 13:28:43,597 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-08-21 13:28:43,597 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:28:43,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-08-21 13:28:43,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2021-08-21 13:28:43,597 INFO L87 Difference]: Start difference. First operand 3658 states and 12255 transitions. Second operand has 15 states, 15 states have (on average 2.6) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:28:45,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:28:45,184 INFO L93 Difference]: Finished difference Result 4191 states and 13951 transitions. [2021-08-21 13:28:45,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-08-21 13:28:45,184 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.6) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:28:45,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:28:45,192 INFO L225 Difference]: With dead ends: 4191 [2021-08-21 13:28:45,193 INFO L226 Difference]: Without dead ends: 4061 [2021-08-21 13:28:45,193 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 671 ImplicationChecksByTransitivity, 950.5ms TimeCoverageRelationStatistics Valid=264, Invalid=2492, Unknown=0, NotChecked=0, Total=2756 [2021-08-21 13:28:45,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4061 states. [2021-08-21 13:28:45,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4061 to 3634. [2021-08-21 13:28:45,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3634 states, 3633 states have (on average 3.353426919900908) internal successors, (12183), 3633 states have internal predecessors, (12183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:28:45,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3634 states to 3634 states and 12183 transitions. [2021-08-21 13:28:45,245 INFO L78 Accepts]: Start accepts. Automaton has 3634 states and 12183 transitions. Word has length 39 [2021-08-21 13:28:45,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:28:45,245 INFO L470 AbstractCegarLoop]: Abstraction has 3634 states and 12183 transitions. [2021-08-21 13:28:45,245 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.6) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:28:45,245 INFO L276 IsEmpty]: Start isEmpty. Operand 3634 states and 12183 transitions. [2021-08-21 13:28:45,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:28:45,250 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:28:45,250 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:28:45,250 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2021-08-21 13:28:45,250 INFO L402 AbstractCegarLoop]: === Iteration 106 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:28:45,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:28:45,251 INFO L82 PathProgramCache]: Analyzing trace with hash -244993434, now seen corresponding path program 106 times [2021-08-21 13:28:45,251 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:28:45,251 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [740644955] [2021-08-21 13:28:45,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:28:45,251 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:28:45,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:28:45,538 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:28:45,538 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:28:45,539 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [740644955] [2021-08-21 13:28:45,539 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [740644955] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:28:45,539 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:28:45,539 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-08-21 13:28:45,539 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377784365] [2021-08-21 13:28:45,539 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-08-21 13:28:45,539 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:28:45,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-08-21 13:28:45,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-08-21 13:28:45,539 INFO L87 Difference]: Start difference. First operand 3634 states and 12183 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:28:46,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:28:46,893 INFO L93 Difference]: Finished difference Result 4175 states and 13901 transitions. [2021-08-21 13:28:46,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-08-21 13:28:46,894 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:28:46,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:28:46,902 INFO L225 Difference]: With dead ends: 4175 [2021-08-21 13:28:46,902 INFO L226 Difference]: Without dead ends: 4108 [2021-08-21 13:28:46,902 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 603 ImplicationChecksByTransitivity, 859.9ms TimeCoverageRelationStatistics Valid=261, Invalid=2391, Unknown=0, NotChecked=0, Total=2652 [2021-08-21 13:28:46,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4108 states. [2021-08-21 13:28:46,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4108 to 3650. [2021-08-21 13:28:46,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3650 states, 3649 states have (on average 3.3496848451630585) internal successors, (12223), 3649 states have internal predecessors, (12223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:28:46,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3650 states to 3650 states and 12223 transitions. [2021-08-21 13:28:46,954 INFO L78 Accepts]: Start accepts. Automaton has 3650 states and 12223 transitions. Word has length 39 [2021-08-21 13:28:46,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:28:46,954 INFO L470 AbstractCegarLoop]: Abstraction has 3650 states and 12223 transitions. [2021-08-21 13:28:46,954 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:28:46,954 INFO L276 IsEmpty]: Start isEmpty. Operand 3650 states and 12223 transitions. [2021-08-21 13:28:46,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:28:46,959 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:28:46,960 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:28:46,960 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2021-08-21 13:28:46,960 INFO L402 AbstractCegarLoop]: === Iteration 107 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:28:46,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:28:46,960 INFO L82 PathProgramCache]: Analyzing trace with hash -1964609404, now seen corresponding path program 107 times [2021-08-21 13:28:46,960 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:28:46,960 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [946405471] [2021-08-21 13:28:46,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:28:46,960 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:28:46,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:28:47,245 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:28:47,245 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:28:47,245 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [946405471] [2021-08-21 13:28:47,245 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [946405471] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:28:47,245 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:28:47,245 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-08-21 13:28:47,245 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871033618] [2021-08-21 13:28:47,245 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-08-21 13:28:47,245 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:28:47,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-08-21 13:28:47,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-08-21 13:28:47,246 INFO L87 Difference]: Start difference. First operand 3650 states and 12223 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:28:49,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:28:49,075 INFO L93 Difference]: Finished difference Result 4312 states and 14258 transitions. [2021-08-21 13:28:49,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2021-08-21 13:28:49,075 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:28:49,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:28:49,084 INFO L225 Difference]: With dead ends: 4312 [2021-08-21 13:28:49,084 INFO L226 Difference]: Without dead ends: 4269 [2021-08-21 13:28:49,084 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1039 ImplicationChecksByTransitivity, 1169.6ms TimeCoverageRelationStatistics Valid=352, Invalid=3554, Unknown=0, NotChecked=0, Total=3906 [2021-08-21 13:28:49,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4269 states. [2021-08-21 13:28:49,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4269 to 3656. [2021-08-21 13:28:49,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3656 states, 3655 states have (on average 3.3477428180574553) internal successors, (12236), 3655 states have internal predecessors, (12236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:28:49,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3656 states to 3656 states and 12236 transitions. [2021-08-21 13:28:49,134 INFO L78 Accepts]: Start accepts. Automaton has 3656 states and 12236 transitions. Word has length 39 [2021-08-21 13:28:49,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:28:49,134 INFO L470 AbstractCegarLoop]: Abstraction has 3656 states and 12236 transitions. [2021-08-21 13:28:49,134 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:28:49,134 INFO L276 IsEmpty]: Start isEmpty. Operand 3656 states and 12236 transitions. [2021-08-21 13:28:49,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:28:49,139 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:28:49,139 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:28:49,139 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2021-08-21 13:28:49,139 INFO L402 AbstractCegarLoop]: === Iteration 108 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:28:49,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:28:49,139 INFO L82 PathProgramCache]: Analyzing trace with hash 549759590, now seen corresponding path program 108 times [2021-08-21 13:28:49,139 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:28:49,139 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2042812242] [2021-08-21 13:28:49,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:28:49,139 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:28:49,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:28:49,409 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:28:49,410 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:28:49,410 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2042812242] [2021-08-21 13:28:49,410 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2042812242] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:28:49,410 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:28:49,410 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-08-21 13:28:49,410 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363098713] [2021-08-21 13:28:49,410 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-08-21 13:28:49,410 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:28:49,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-08-21 13:28:49,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-08-21 13:28:49,410 INFO L87 Difference]: Start difference. First operand 3656 states and 12236 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:28:50,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:28:50,926 INFO L93 Difference]: Finished difference Result 4243 states and 14078 transitions. [2021-08-21 13:28:50,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2021-08-21 13:28:50,926 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:28:50,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:28:50,934 INFO L225 Difference]: With dead ends: 4243 [2021-08-21 13:28:50,934 INFO L226 Difference]: Without dead ends: 4179 [2021-08-21 13:28:50,935 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 908 ImplicationChecksByTransitivity, 945.9ms TimeCoverageRelationStatistics Valid=325, Invalid=3215, Unknown=0, NotChecked=0, Total=3540 [2021-08-21 13:28:50,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4179 states. [2021-08-21 13:28:50,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4179 to 3638. [2021-08-21 13:28:50,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3638 states, 3637 states have (on average 3.3524883145449547) internal successors, (12193), 3637 states have internal predecessors, (12193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:28:50,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3638 states to 3638 states and 12193 transitions. [2021-08-21 13:28:50,987 INFO L78 Accepts]: Start accepts. Automaton has 3638 states and 12193 transitions. Word has length 39 [2021-08-21 13:28:50,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:28:50,987 INFO L470 AbstractCegarLoop]: Abstraction has 3638 states and 12193 transitions. [2021-08-21 13:28:50,988 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:28:50,988 INFO L276 IsEmpty]: Start isEmpty. Operand 3638 states and 12193 transitions. [2021-08-21 13:28:50,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:28:50,993 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:28:50,993 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:28:50,993 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2021-08-21 13:28:50,996 INFO L402 AbstractCegarLoop]: === Iteration 109 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:28:50,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:28:50,996 INFO L82 PathProgramCache]: Analyzing trace with hash 1170193990, now seen corresponding path program 109 times [2021-08-21 13:28:50,996 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:28:50,996 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1456310090] [2021-08-21 13:28:50,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:28:50,996 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:28:50,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:28:51,223 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:28:51,223 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:28:51,223 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1456310090] [2021-08-21 13:28:51,223 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1456310090] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:28:51,223 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:28:51,223 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-08-21 13:28:51,223 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1887647605] [2021-08-21 13:28:51,223 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-08-21 13:28:51,223 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:28:51,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-08-21 13:28:51,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-08-21 13:28:51,224 INFO L87 Difference]: Start difference. First operand 3638 states and 12193 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:28:52,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:28:52,296 INFO L93 Difference]: Finished difference Result 4061 states and 13536 transitions. [2021-08-21 13:28:52,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-08-21 13:28:52,296 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:28:52,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:28:52,304 INFO L225 Difference]: With dead ends: 4061 [2021-08-21 13:28:52,304 INFO L226 Difference]: Without dead ends: 3994 [2021-08-21 13:28:52,304 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 417 ImplicationChecksByTransitivity, 675.2ms TimeCoverageRelationStatistics Valid=213, Invalid=1857, Unknown=0, NotChecked=0, Total=2070 [2021-08-21 13:28:52,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3994 states. [2021-08-21 13:28:52,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3994 to 3646. [2021-08-21 13:28:52,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3646 states, 3645 states have (on average 3.349519890260631) internal successors, (12209), 3645 states have internal predecessors, (12209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:28:52,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3646 states to 3646 states and 12209 transitions. [2021-08-21 13:28:52,350 INFO L78 Accepts]: Start accepts. Automaton has 3646 states and 12209 transitions. Word has length 39 [2021-08-21 13:28:52,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:28:52,351 INFO L470 AbstractCegarLoop]: Abstraction has 3646 states and 12209 transitions. [2021-08-21 13:28:52,351 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:28:52,351 INFO L276 IsEmpty]: Start isEmpty. Operand 3646 states and 12209 transitions. [2021-08-21 13:28:52,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:28:52,355 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:28:52,355 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:28:52,355 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2021-08-21 13:28:52,355 INFO L402 AbstractCegarLoop]: === Iteration 110 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:28:52,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:28:52,356 INFO L82 PathProgramCache]: Analyzing trace with hash 1039599142, now seen corresponding path program 110 times [2021-08-21 13:28:52,356 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:28:52,356 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1969402702] [2021-08-21 13:28:52,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:28:52,356 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:28:52,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:28:52,638 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:28:52,638 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:28:52,638 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1969402702] [2021-08-21 13:28:52,638 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1969402702] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:28:52,638 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:28:52,638 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-08-21 13:28:52,638 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [630319040] [2021-08-21 13:28:52,638 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-08-21 13:28:52,638 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:28:52,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-08-21 13:28:52,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-08-21 13:28:52,639 INFO L87 Difference]: Start difference. First operand 3646 states and 12209 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:28:53,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:28:53,829 INFO L93 Difference]: Finished difference Result 4049 states and 13496 transitions. [2021-08-21 13:28:53,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-08-21 13:28:53,829 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:28:53,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:28:53,837 INFO L225 Difference]: With dead ends: 4049 [2021-08-21 13:28:53,837 INFO L226 Difference]: Without dead ends: 3986 [2021-08-21 13:28:53,837 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 446 ImplicationChecksByTransitivity, 736.4ms TimeCoverageRelationStatistics Valid=219, Invalid=1943, Unknown=0, NotChecked=0, Total=2162 [2021-08-21 13:28:53,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3986 states. [2021-08-21 13:28:53,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3986 to 3638. [2021-08-21 13:28:53,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3638 states, 3637 states have (on average 3.351388507011273) internal successors, (12189), 3637 states have internal predecessors, (12189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:28:53,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3638 states to 3638 states and 12189 transitions. [2021-08-21 13:28:53,886 INFO L78 Accepts]: Start accepts. Automaton has 3638 states and 12189 transitions. Word has length 39 [2021-08-21 13:28:53,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:28:53,886 INFO L470 AbstractCegarLoop]: Abstraction has 3638 states and 12189 transitions. [2021-08-21 13:28:53,886 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:28:53,886 INFO L276 IsEmpty]: Start isEmpty. Operand 3638 states and 12189 transitions. [2021-08-21 13:28:53,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:28:53,891 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:28:53,891 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:28:53,891 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2021-08-21 13:28:53,891 INFO L402 AbstractCegarLoop]: === Iteration 111 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:28:53,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:28:53,891 INFO L82 PathProgramCache]: Analyzing trace with hash 903920550, now seen corresponding path program 111 times [2021-08-21 13:28:53,891 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:28:53,892 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [394723198] [2021-08-21 13:28:53,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:28:53,892 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:28:53,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:28:54,167 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:28:54,167 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:28:54,167 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [394723198] [2021-08-21 13:28:54,167 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [394723198] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:28:54,167 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:28:54,167 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-08-21 13:28:54,167 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662009840] [2021-08-21 13:28:54,167 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-08-21 13:28:54,167 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:28:54,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-08-21 13:28:54,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-08-21 13:28:54,168 INFO L87 Difference]: Start difference. First operand 3638 states and 12189 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:28:55,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:28:55,670 INFO L93 Difference]: Finished difference Result 4183 states and 13831 transitions. [2021-08-21 13:28:55,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-08-21 13:28:55,670 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:28:55,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:28:55,678 INFO L225 Difference]: With dead ends: 4183 [2021-08-21 13:28:55,678 INFO L226 Difference]: Without dead ends: 4140 [2021-08-21 13:28:55,679 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 826 ImplicationChecksByTransitivity, 998.9ms TimeCoverageRelationStatistics Valid=311, Invalid=2995, Unknown=0, NotChecked=0, Total=3306 [2021-08-21 13:28:55,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4140 states. [2021-08-21 13:28:55,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4140 to 3646. [2021-08-21 13:28:55,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3646 states, 3645 states have (on average 3.349519890260631) internal successors, (12209), 3645 states have internal predecessors, (12209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:28:55,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3646 states to 3646 states and 12209 transitions. [2021-08-21 13:28:55,729 INFO L78 Accepts]: Start accepts. Automaton has 3646 states and 12209 transitions. Word has length 39 [2021-08-21 13:28:55,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:28:55,730 INFO L470 AbstractCegarLoop]: Abstraction has 3646 states and 12209 transitions. [2021-08-21 13:28:55,730 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:28:55,730 INFO L276 IsEmpty]: Start isEmpty. Operand 3646 states and 12209 transitions. [2021-08-21 13:28:55,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:28:55,734 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:28:55,735 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:28:55,735 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2021-08-21 13:28:55,735 INFO L402 AbstractCegarLoop]: === Iteration 112 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:28:55,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:28:55,736 INFO L82 PathProgramCache]: Analyzing trace with hash -876677752, now seen corresponding path program 112 times [2021-08-21 13:28:55,736 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:28:55,736 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [191316905] [2021-08-21 13:28:55,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:28:55,736 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:28:55,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:28:56,039 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:28:56,039 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:28:56,039 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [191316905] [2021-08-21 13:28:56,039 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [191316905] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:28:56,039 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:28:56,039 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-08-21 13:28:56,039 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1398227206] [2021-08-21 13:28:56,039 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-08-21 13:28:56,039 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:28:56,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-08-21 13:28:56,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-08-21 13:28:56,040 INFO L87 Difference]: Start difference. First operand 3646 states and 12209 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:28:57,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:28:57,496 INFO L93 Difference]: Finished difference Result 4171 states and 13793 transitions. [2021-08-21 13:28:57,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-08-21 13:28:57,497 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:28:57,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:28:57,506 INFO L225 Difference]: With dead ends: 4171 [2021-08-21 13:28:57,506 INFO L226 Difference]: Without dead ends: 4119 [2021-08-21 13:28:57,506 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 786 ImplicationChecksByTransitivity, 1001.1ms TimeCoverageRelationStatistics Valid=303, Invalid=2889, Unknown=0, NotChecked=0, Total=3192 [2021-08-21 13:28:57,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4119 states. [2021-08-21 13:28:57,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4119 to 3638. [2021-08-21 13:28:57,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3638 states, 3637 states have (on average 3.351388507011273) internal successors, (12189), 3637 states have internal predecessors, (12189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:28:57,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3638 states to 3638 states and 12189 transitions. [2021-08-21 13:28:57,558 INFO L78 Accepts]: Start accepts. Automaton has 3638 states and 12189 transitions. Word has length 39 [2021-08-21 13:28:57,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:28:57,558 INFO L470 AbstractCegarLoop]: Abstraction has 3638 states and 12189 transitions. [2021-08-21 13:28:57,559 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:28:57,559 INFO L276 IsEmpty]: Start isEmpty. Operand 3638 states and 12189 transitions. [2021-08-21 13:28:57,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:28:57,563 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:28:57,564 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:28:57,564 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2021-08-21 13:28:57,564 INFO L402 AbstractCegarLoop]: === Iteration 113 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:28:57,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:28:57,564 INFO L82 PathProgramCache]: Analyzing trace with hash 1822404120, now seen corresponding path program 113 times [2021-08-21 13:28:57,564 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:28:57,564 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1018113797] [2021-08-21 13:28:57,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:28:57,564 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:28:57,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:28:57,865 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:28:57,865 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:28:57,865 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1018113797] [2021-08-21 13:28:57,865 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1018113797] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:28:57,865 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:28:57,865 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-08-21 13:28:57,865 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385951327] [2021-08-21 13:28:57,865 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-08-21 13:28:57,865 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:28:57,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-08-21 13:28:57,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-08-21 13:28:57,866 INFO L87 Difference]: Start difference. First operand 3638 states and 12189 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:28:59,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:28:59,108 INFO L93 Difference]: Finished difference Result 4136 states and 13684 transitions. [2021-08-21 13:28:59,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-08-21 13:28:59,108 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:28:59,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:28:59,116 INFO L225 Difference]: With dead ends: 4136 [2021-08-21 13:28:59,117 INFO L226 Difference]: Without dead ends: 4081 [2021-08-21 13:28:59,117 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 510 ImplicationChecksByTransitivity, 821.6ms TimeCoverageRelationStatistics Valid=239, Invalid=2113, Unknown=0, NotChecked=0, Total=2352 [2021-08-21 13:28:59,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4081 states. [2021-08-21 13:28:59,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4081 to 3640. [2021-08-21 13:28:59,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3640 states, 3639 states have (on average 3.350370981038747) internal successors, (12192), 3639 states have internal predecessors, (12192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:28:59,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3640 states to 3640 states and 12192 transitions. [2021-08-21 13:28:59,168 INFO L78 Accepts]: Start accepts. Automaton has 3640 states and 12192 transitions. Word has length 39 [2021-08-21 13:28:59,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:28:59,168 INFO L470 AbstractCegarLoop]: Abstraction has 3640 states and 12192 transitions. [2021-08-21 13:28:59,168 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:28:59,168 INFO L276 IsEmpty]: Start isEmpty. Operand 3640 states and 12192 transitions. [2021-08-21 13:28:59,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:28:59,173 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:28:59,173 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:28:59,173 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2021-08-21 13:28:59,173 INFO L402 AbstractCegarLoop]: === Iteration 114 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:28:59,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:28:59,173 INFO L82 PathProgramCache]: Analyzing trace with hash -1299910954, now seen corresponding path program 114 times [2021-08-21 13:28:59,173 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:28:59,173 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1859200689] [2021-08-21 13:28:59,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:28:59,173 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:28:59,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:28:59,437 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:28:59,437 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:28:59,437 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1859200689] [2021-08-21 13:28:59,437 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1859200689] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:28:59,437 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:28:59,437 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-08-21 13:28:59,437 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2038228267] [2021-08-21 13:28:59,437 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-08-21 13:28:59,437 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:28:59,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-08-21 13:28:59,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-08-21 13:28:59,438 INFO L87 Difference]: Start difference. First operand 3640 states and 12192 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:29:00,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:29:00,470 INFO L93 Difference]: Finished difference Result 4046 states and 13486 transitions. [2021-08-21 13:29:00,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-08-21 13:29:00,470 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:29:00,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:29:00,479 INFO L225 Difference]: With dead ends: 4046 [2021-08-21 13:29:00,479 INFO L226 Difference]: Without dead ends: 3982 [2021-08-21 13:29:00,480 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 444 ImplicationChecksByTransitivity, 677.5ms TimeCoverageRelationStatistics Valid=224, Invalid=1938, Unknown=0, NotChecked=0, Total=2162 [2021-08-21 13:29:00,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3982 states. [2021-08-21 13:29:00,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3982 to 3634. [2021-08-21 13:29:00,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3634 states, 3633 states have (on average 3.3523259014588493) internal successors, (12179), 3633 states have internal predecessors, (12179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:29:00,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3634 states to 3634 states and 12179 transitions. [2021-08-21 13:29:00,537 INFO L78 Accepts]: Start accepts. Automaton has 3634 states and 12179 transitions. Word has length 39 [2021-08-21 13:29:00,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:29:00,537 INFO L470 AbstractCegarLoop]: Abstraction has 3634 states and 12179 transitions. [2021-08-21 13:29:00,537 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:29:00,537 INFO L276 IsEmpty]: Start isEmpty. Operand 3634 states and 12179 transitions. [2021-08-21 13:29:00,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:29:00,542 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:29:00,542 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:29:00,542 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2021-08-21 13:29:00,542 INFO L402 AbstractCegarLoop]: === Iteration 115 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:29:00,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:29:00,543 INFO L82 PathProgramCache]: Analyzing trace with hash 942137368, now seen corresponding path program 115 times [2021-08-21 13:29:00,543 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:29:00,545 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1144237848] [2021-08-21 13:29:00,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:29:00,545 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:29:00,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:29:00,787 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:29:00,788 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:29:00,788 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1144237848] [2021-08-21 13:29:00,788 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1144237848] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:29:00,788 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:29:00,788 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-08-21 13:29:00,788 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [845295489] [2021-08-21 13:29:00,788 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-08-21 13:29:00,788 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:29:00,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-08-21 13:29:00,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-08-21 13:29:00,789 INFO L87 Difference]: Start difference. First operand 3634 states and 12179 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:29:02,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:29:02,465 INFO L93 Difference]: Finished difference Result 4309 states and 14218 transitions. [2021-08-21 13:29:02,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-08-21 13:29:02,466 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:29:02,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:29:02,474 INFO L225 Difference]: With dead ends: 4309 [2021-08-21 13:29:02,474 INFO L226 Difference]: Without dead ends: 4172 [2021-08-21 13:29:02,474 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 906 ImplicationChecksByTransitivity, 1059.2ms TimeCoverageRelationStatistics Valid=314, Invalid=3226, Unknown=0, NotChecked=0, Total=3540 [2021-08-21 13:29:02,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4172 states. [2021-08-21 13:29:02,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4172 to 3638. [2021-08-21 13:29:02,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3638 states, 3637 states have (on average 3.351388507011273) internal successors, (12189), 3637 states have internal predecessors, (12189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:29:02,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3638 states to 3638 states and 12189 transitions. [2021-08-21 13:29:02,522 INFO L78 Accepts]: Start accepts. Automaton has 3638 states and 12189 transitions. Word has length 39 [2021-08-21 13:29:02,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:29:02,523 INFO L470 AbstractCegarLoop]: Abstraction has 3638 states and 12189 transitions. [2021-08-21 13:29:02,523 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:29:02,523 INFO L276 IsEmpty]: Start isEmpty. Operand 3638 states and 12189 transitions. [2021-08-21 13:29:02,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:29:02,527 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:29:02,527 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:29:02,527 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2021-08-21 13:29:02,528 INFO L402 AbstractCegarLoop]: === Iteration 116 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:29:02,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:29:02,528 INFO L82 PathProgramCache]: Analyzing trace with hash -552753532, now seen corresponding path program 116 times [2021-08-21 13:29:02,528 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:29:02,528 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [579669172] [2021-08-21 13:29:02,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:29:02,528 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:29:02,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:29:02,792 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:29:02,793 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:29:02,793 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [579669172] [2021-08-21 13:29:02,793 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [579669172] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:29:02,793 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:29:02,793 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-08-21 13:29:02,794 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [669870822] [2021-08-21 13:29:02,796 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-08-21 13:29:02,796 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:29:02,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-08-21 13:29:02,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-08-21 13:29:02,796 INFO L87 Difference]: Start difference. First operand 3638 states and 12189 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:29:03,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:29:03,908 INFO L93 Difference]: Finished difference Result 4287 states and 14084 transitions. [2021-08-21 13:29:03,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-08-21 13:29:03,909 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:29:03,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:29:03,917 INFO L225 Difference]: With dead ends: 4287 [2021-08-21 13:29:03,917 INFO L226 Difference]: Without dead ends: 4223 [2021-08-21 13:29:03,917 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 787 ImplicationChecksByTransitivity, 744.7ms TimeCoverageRelationStatistics Valid=297, Invalid=2895, Unknown=0, NotChecked=0, Total=3192 [2021-08-21 13:29:03,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4223 states. [2021-08-21 13:29:03,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4223 to 3638. [2021-08-21 13:29:03,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3638 states, 3637 states have (on average 3.351388507011273) internal successors, (12189), 3637 states have internal predecessors, (12189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:29:04,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3638 states to 3638 states and 12189 transitions. [2021-08-21 13:29:04,000 INFO L78 Accepts]: Start accepts. Automaton has 3638 states and 12189 transitions. Word has length 39 [2021-08-21 13:29:04,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:29:04,000 INFO L470 AbstractCegarLoop]: Abstraction has 3638 states and 12189 transitions. [2021-08-21 13:29:04,001 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:29:04,001 INFO L276 IsEmpty]: Start isEmpty. Operand 3638 states and 12189 transitions. [2021-08-21 13:29:04,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:29:04,005 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:29:04,005 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:29:04,005 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2021-08-21 13:29:04,005 INFO L402 AbstractCegarLoop]: === Iteration 117 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:29:04,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:29:04,006 INFO L82 PathProgramCache]: Analyzing trace with hash 365730038, now seen corresponding path program 117 times [2021-08-21 13:29:04,006 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:29:04,006 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1311282660] [2021-08-21 13:29:04,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:29:04,006 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:29:04,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:29:04,198 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:29:04,198 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:29:04,198 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1311282660] [2021-08-21 13:29:04,198 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1311282660] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:29:04,198 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:29:04,198 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-08-21 13:29:04,198 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727966660] [2021-08-21 13:29:04,199 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-08-21 13:29:04,199 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:29:04,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-08-21 13:29:04,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-08-21 13:29:04,199 INFO L87 Difference]: Start difference. First operand 3638 states and 12189 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:29:05,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:29:05,042 INFO L93 Difference]: Finished difference Result 4192 states and 13832 transitions. [2021-08-21 13:29:05,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-08-21 13:29:05,042 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:29:05,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:29:05,051 INFO L225 Difference]: With dead ends: 4192 [2021-08-21 13:29:05,051 INFO L226 Difference]: Without dead ends: 4137 [2021-08-21 13:29:05,051 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 477 ImplicationChecksByTransitivity, 514.4ms TimeCoverageRelationStatistics Valid=221, Invalid=2035, Unknown=0, NotChecked=0, Total=2256 [2021-08-21 13:29:05,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4137 states. [2021-08-21 13:29:05,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4137 to 3640. [2021-08-21 13:29:05,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3640 states, 3639 states have (on average 3.350370981038747) internal successors, (12192), 3639 states have internal predecessors, (12192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:29:05,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3640 states to 3640 states and 12192 transitions. [2021-08-21 13:29:05,103 INFO L78 Accepts]: Start accepts. Automaton has 3640 states and 12192 transitions. Word has length 39 [2021-08-21 13:29:05,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:29:05,103 INFO L470 AbstractCegarLoop]: Abstraction has 3640 states and 12192 transitions. [2021-08-21 13:29:05,103 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:29:05,103 INFO L276 IsEmpty]: Start isEmpty. Operand 3640 states and 12192 transitions. [2021-08-21 13:29:05,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:29:05,108 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:29:05,108 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:29:05,108 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2021-08-21 13:29:05,108 INFO L402 AbstractCegarLoop]: === Iteration 118 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:29:05,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:29:05,109 INFO L82 PathProgramCache]: Analyzing trace with hash 1538382260, now seen corresponding path program 118 times [2021-08-21 13:29:05,109 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:29:05,109 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1815322665] [2021-08-21 13:29:05,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:29:05,109 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:29:05,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:29:05,324 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:29:05,324 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:29:05,324 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1815322665] [2021-08-21 13:29:05,324 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1815322665] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:29:05,324 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:29:05,324 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-08-21 13:29:05,325 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198831196] [2021-08-21 13:29:05,325 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-08-21 13:29:05,325 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:29:05,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-08-21 13:29:05,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-08-21 13:29:05,325 INFO L87 Difference]: Start difference. First operand 3640 states and 12192 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:29:06,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:29:06,285 INFO L93 Difference]: Finished difference Result 4162 states and 13771 transitions. [2021-08-21 13:29:06,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-08-21 13:29:06,285 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:29:06,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:29:06,293 INFO L225 Difference]: With dead ends: 4162 [2021-08-21 13:29:06,293 INFO L226 Difference]: Without dead ends: 4102 [2021-08-21 13:29:06,293 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 480 ImplicationChecksByTransitivity, 620.7ms TimeCoverageRelationStatistics Valid=224, Invalid=2032, Unknown=0, NotChecked=0, Total=2256 [2021-08-21 13:29:06,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4102 states. [2021-08-21 13:29:06,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4102 to 3638. [2021-08-21 13:29:06,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3638 states, 3637 states have (on average 3.350838603244432) internal successors, (12187), 3637 states have internal predecessors, (12187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:29:06,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3638 states to 3638 states and 12187 transitions. [2021-08-21 13:29:06,343 INFO L78 Accepts]: Start accepts. Automaton has 3638 states and 12187 transitions. Word has length 39 [2021-08-21 13:29:06,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:29:06,344 INFO L470 AbstractCegarLoop]: Abstraction has 3638 states and 12187 transitions. [2021-08-21 13:29:06,344 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:29:06,344 INFO L276 IsEmpty]: Start isEmpty. Operand 3638 states and 12187 transitions. [2021-08-21 13:29:06,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:29:06,349 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:29:06,349 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:29:06,349 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2021-08-21 13:29:06,349 INFO L402 AbstractCegarLoop]: === Iteration 119 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:29:06,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:29:06,349 INFO L82 PathProgramCache]: Analyzing trace with hash -541184282, now seen corresponding path program 119 times [2021-08-21 13:29:06,349 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:29:06,349 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [247733445] [2021-08-21 13:29:06,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:29:06,349 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:29:06,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:29:06,527 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:29:06,528 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:29:06,528 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [247733445] [2021-08-21 13:29:06,528 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [247733445] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:29:06,528 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:29:06,528 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-08-21 13:29:06,528 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137473486] [2021-08-21 13:29:06,528 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-08-21 13:29:06,528 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:29:06,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-08-21 13:29:06,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2021-08-21 13:29:06,528 INFO L87 Difference]: Start difference. First operand 3638 states and 12187 transitions. Second operand has 15 states, 15 states have (on average 2.6) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:29:07,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:29:07,614 INFO L93 Difference]: Finished difference Result 4073 states and 13558 transitions. [2021-08-21 13:29:07,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-08-21 13:29:07,615 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.6) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:29:07,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:29:07,623 INFO L225 Difference]: With dead ends: 4073 [2021-08-21 13:29:07,623 INFO L226 Difference]: Without dead ends: 3997 [2021-08-21 13:29:07,623 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 390 ImplicationChecksByTransitivity, 625.6ms TimeCoverageRelationStatistics Valid=199, Invalid=1693, Unknown=0, NotChecked=0, Total=1892 [2021-08-21 13:29:07,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3997 states. [2021-08-21 13:29:07,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3997 to 3646. [2021-08-21 13:29:07,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3646 states, 3645 states have (on average 3.3478737997256514) internal successors, (12203), 3645 states have internal predecessors, (12203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:29:07,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3646 states to 3646 states and 12203 transitions. [2021-08-21 13:29:07,673 INFO L78 Accepts]: Start accepts. Automaton has 3646 states and 12203 transitions. Word has length 39 [2021-08-21 13:29:07,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:29:07,674 INFO L470 AbstractCegarLoop]: Abstraction has 3646 states and 12203 transitions. [2021-08-21 13:29:07,674 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.6) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:29:07,674 INFO L276 IsEmpty]: Start isEmpty. Operand 3646 states and 12203 transitions. [2021-08-21 13:29:07,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:29:07,678 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:29:07,678 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:29:07,678 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2021-08-21 13:29:07,679 INFO L402 AbstractCegarLoop]: === Iteration 120 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:29:07,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:29:07,679 INFO L82 PathProgramCache]: Analyzing trace with hash -1559237894, now seen corresponding path program 120 times [2021-08-21 13:29:07,679 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:29:07,679 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [904751857] [2021-08-21 13:29:07,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:29:07,679 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:29:07,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:29:07,960 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:29:07,960 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:29:07,960 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [904751857] [2021-08-21 13:29:07,960 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [904751857] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:29:07,960 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:29:07,960 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-08-21 13:29:07,960 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873938128] [2021-08-21 13:29:07,960 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-08-21 13:29:07,960 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:29:07,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-08-21 13:29:07,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-08-21 13:29:07,961 INFO L87 Difference]: Start difference. First operand 3646 states and 12203 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:29:09,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:29:09,027 INFO L93 Difference]: Finished difference Result 4055 states and 13504 transitions. [2021-08-21 13:29:09,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-08-21 13:29:09,028 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:29:09,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:29:09,036 INFO L225 Difference]: With dead ends: 4055 [2021-08-21 13:29:09,036 INFO L226 Difference]: Without dead ends: 3977 [2021-08-21 13:29:09,036 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 447 ImplicationChecksByTransitivity, 694.1ms TimeCoverageRelationStatistics Valid=215, Invalid=1947, Unknown=0, NotChecked=0, Total=2162 [2021-08-21 13:29:09,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3977 states. [2021-08-21 13:29:09,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3977 to 3626. [2021-08-21 13:29:09,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3626 states, 3625 states have (on average 3.353103448275862) internal successors, (12155), 3625 states have internal predecessors, (12155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:29:09,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3626 states to 3626 states and 12155 transitions. [2021-08-21 13:29:09,087 INFO L78 Accepts]: Start accepts. Automaton has 3626 states and 12155 transitions. Word has length 39 [2021-08-21 13:29:09,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:29:09,088 INFO L470 AbstractCegarLoop]: Abstraction has 3626 states and 12155 transitions. [2021-08-21 13:29:09,088 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:29:09,088 INFO L276 IsEmpty]: Start isEmpty. Operand 3626 states and 12155 transitions. [2021-08-21 13:29:09,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:29:09,093 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:29:09,093 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:29:09,093 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2021-08-21 13:29:09,093 INFO L402 AbstractCegarLoop]: === Iteration 121 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:29:09,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:29:09,093 INFO L82 PathProgramCache]: Analyzing trace with hash 324873820, now seen corresponding path program 121 times [2021-08-21 13:29:09,093 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:29:09,093 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1428579252] [2021-08-21 13:29:09,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:29:09,094 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:29:09,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:29:09,284 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:29:09,284 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:29:09,284 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1428579252] [2021-08-21 13:29:09,284 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1428579252] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:29:09,284 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:29:09,284 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-08-21 13:29:09,284 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1326545196] [2021-08-21 13:29:09,284 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-08-21 13:29:09,284 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:29:09,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-08-21 13:29:09,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-08-21 13:29:09,285 INFO L87 Difference]: Start difference. First operand 3626 states and 12155 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:29:10,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:29:10,246 INFO L93 Difference]: Finished difference Result 4269 states and 14190 transitions. [2021-08-21 13:29:10,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-08-21 13:29:10,247 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:29:10,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:29:10,255 INFO L225 Difference]: With dead ends: 4269 [2021-08-21 13:29:10,255 INFO L226 Difference]: Without dead ends: 4202 [2021-08-21 13:29:10,256 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 532 ImplicationChecksByTransitivity, 559.6ms TimeCoverageRelationStatistics Valid=243, Invalid=2207, Unknown=0, NotChecked=0, Total=2450 [2021-08-21 13:29:10,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4202 states. [2021-08-21 13:29:10,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4202 to 3658. [2021-08-21 13:29:10,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3658 states, 3657 states have (on average 3.347826086956522) internal successors, (12243), 3657 states have internal predecessors, (12243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:29:10,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3658 states to 3658 states and 12243 transitions. [2021-08-21 13:29:10,310 INFO L78 Accepts]: Start accepts. Automaton has 3658 states and 12243 transitions. Word has length 39 [2021-08-21 13:29:10,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:29:10,310 INFO L470 AbstractCegarLoop]: Abstraction has 3658 states and 12243 transitions. [2021-08-21 13:29:10,310 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:29:10,310 INFO L276 IsEmpty]: Start isEmpty. Operand 3658 states and 12243 transitions. [2021-08-21 13:29:10,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:29:10,315 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:29:10,315 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:29:10,315 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2021-08-21 13:29:10,315 INFO L402 AbstractCegarLoop]: === Iteration 122 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:29:10,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:29:10,316 INFO L82 PathProgramCache]: Analyzing trace with hash -1394742150, now seen corresponding path program 122 times [2021-08-21 13:29:10,316 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:29:10,316 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1943547826] [2021-08-21 13:29:10,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:29:10,316 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:29:10,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:29:10,503 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:29:10,503 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:29:10,503 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1943547826] [2021-08-21 13:29:10,503 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1943547826] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:29:10,503 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:29:10,503 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-08-21 13:29:10,503 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137710675] [2021-08-21 13:29:10,503 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-08-21 13:29:10,504 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:29:10,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-08-21 13:29:10,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-08-21 13:29:10,504 INFO L87 Difference]: Start difference. First operand 3658 states and 12243 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:29:11,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:29:11,749 INFO L93 Difference]: Finished difference Result 4406 states and 14547 transitions. [2021-08-21 13:29:11,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2021-08-21 13:29:11,749 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:29:11,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:29:11,758 INFO L225 Difference]: With dead ends: 4406 [2021-08-21 13:29:11,758 INFO L226 Difference]: Without dead ends: 4363 [2021-08-21 13:29:11,759 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 903 ImplicationChecksByTransitivity, 738.7ms TimeCoverageRelationStatistics Valid=323, Invalid=3217, Unknown=0, NotChecked=0, Total=3540 [2021-08-21 13:29:11,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4363 states. [2021-08-21 13:29:11,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4363 to 3664. [2021-08-21 13:29:11,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3664 states, 3663 states have (on average 3.3458913458913457) internal successors, (12256), 3663 states have internal predecessors, (12256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:29:11,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3664 states to 3664 states and 12256 transitions. [2021-08-21 13:29:11,810 INFO L78 Accepts]: Start accepts. Automaton has 3664 states and 12256 transitions. Word has length 39 [2021-08-21 13:29:11,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:29:11,810 INFO L470 AbstractCegarLoop]: Abstraction has 3664 states and 12256 transitions. [2021-08-21 13:29:11,810 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:29:11,810 INFO L276 IsEmpty]: Start isEmpty. Operand 3664 states and 12256 transitions. [2021-08-21 13:29:11,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:29:11,815 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:29:11,815 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:29:11,815 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121 [2021-08-21 13:29:11,815 INFO L402 AbstractCegarLoop]: === Iteration 123 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:29:11,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:29:11,815 INFO L82 PathProgramCache]: Analyzing trace with hash 1119626844, now seen corresponding path program 123 times [2021-08-21 13:29:11,815 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:29:11,815 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [285126628] [2021-08-21 13:29:11,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:29:11,815 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:29:11,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:29:12,000 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:29:12,001 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:29:12,001 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [285126628] [2021-08-21 13:29:12,001 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [285126628] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:29:12,001 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:29:12,001 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-08-21 13:29:12,001 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861092669] [2021-08-21 13:29:12,001 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-08-21 13:29:12,001 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:29:12,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-08-21 13:29:12,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-08-21 13:29:12,001 INFO L87 Difference]: Start difference. First operand 3664 states and 12256 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:29:13,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:29:13,225 INFO L93 Difference]: Finished difference Result 4337 states and 14367 transitions. [2021-08-21 13:29:13,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-08-21 13:29:13,225 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:29:13,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:29:13,233 INFO L225 Difference]: With dead ends: 4337 [2021-08-21 13:29:13,233 INFO L226 Difference]: Without dead ends: 4273 [2021-08-21 13:29:13,234 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 820 ImplicationChecksByTransitivity, 724.1ms TimeCoverageRelationStatistics Valid=305, Invalid=3001, Unknown=0, NotChecked=0, Total=3306 [2021-08-21 13:29:13,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4273 states. [2021-08-21 13:29:13,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4273 to 3646. [2021-08-21 13:29:13,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3646 states, 3645 states have (on average 3.3506172839506174) internal successors, (12213), 3645 states have internal predecessors, (12213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:29:13,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3646 states to 3646 states and 12213 transitions. [2021-08-21 13:29:13,288 INFO L78 Accepts]: Start accepts. Automaton has 3646 states and 12213 transitions. Word has length 39 [2021-08-21 13:29:13,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:29:13,288 INFO L470 AbstractCegarLoop]: Abstraction has 3646 states and 12213 transitions. [2021-08-21 13:29:13,288 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:29:13,288 INFO L276 IsEmpty]: Start isEmpty. Operand 3646 states and 12213 transitions. [2021-08-21 13:29:13,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:29:13,293 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:29:13,293 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:29:13,293 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122 [2021-08-21 13:29:13,293 INFO L402 AbstractCegarLoop]: === Iteration 124 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:29:13,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:29:13,293 INFO L82 PathProgramCache]: Analyzing trace with hash 1740061244, now seen corresponding path program 124 times [2021-08-21 13:29:13,294 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:29:13,294 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1418802261] [2021-08-21 13:29:13,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:29:13,294 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:29:13,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:29:13,544 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:29:13,545 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:29:13,545 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1418802261] [2021-08-21 13:29:13,545 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1418802261] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:29:13,545 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:29:13,545 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-08-21 13:29:13,545 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434743765] [2021-08-21 13:29:13,545 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-08-21 13:29:13,545 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:29:13,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-08-21 13:29:13,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-08-21 13:29:13,545 INFO L87 Difference]: Start difference. First operand 3646 states and 12213 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:29:14,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:29:14,556 INFO L93 Difference]: Finished difference Result 4217 states and 14012 transitions. [2021-08-21 13:29:14,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-08-21 13:29:14,556 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:29:14,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:29:14,564 INFO L225 Difference]: With dead ends: 4217 [2021-08-21 13:29:14,564 INFO L226 Difference]: Without dead ends: 4150 [2021-08-21 13:29:14,565 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 387 ImplicationChecksByTransitivity, 568.4ms TimeCoverageRelationStatistics Valid=203, Invalid=1777, Unknown=0, NotChecked=0, Total=1980 [2021-08-21 13:29:14,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4150 states. [2021-08-21 13:29:14,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4150 to 3654. [2021-08-21 13:29:14,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3654 states, 3653 states have (on average 3.3476594579797427) internal successors, (12229), 3653 states have internal predecessors, (12229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:29:14,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3654 states to 3654 states and 12229 transitions. [2021-08-21 13:29:14,614 INFO L78 Accepts]: Start accepts. Automaton has 3654 states and 12229 transitions. Word has length 39 [2021-08-21 13:29:14,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:29:14,615 INFO L470 AbstractCegarLoop]: Abstraction has 3654 states and 12229 transitions. [2021-08-21 13:29:14,615 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:29:14,615 INFO L276 IsEmpty]: Start isEmpty. Operand 3654 states and 12229 transitions. [2021-08-21 13:29:14,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:29:14,620 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:29:14,620 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:29:14,620 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123 [2021-08-21 13:29:14,620 INFO L402 AbstractCegarLoop]: === Iteration 125 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:29:14,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:29:14,620 INFO L82 PathProgramCache]: Analyzing trace with hash 1609466396, now seen corresponding path program 125 times [2021-08-21 13:29:14,620 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:29:14,620 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [832556989] [2021-08-21 13:29:14,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:29:14,621 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:29:14,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:29:14,899 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:29:14,900 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:29:14,900 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [832556989] [2021-08-21 13:29:14,900 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [832556989] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:29:14,900 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:29:14,900 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-08-21 13:29:14,900 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1469907257] [2021-08-21 13:29:14,900 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-08-21 13:29:14,900 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:29:14,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-08-21 13:29:14,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-08-21 13:29:14,900 INFO L87 Difference]: Start difference. First operand 3654 states and 12229 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:29:15,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:29:15,998 INFO L93 Difference]: Finished difference Result 4205 states and 13972 transitions. [2021-08-21 13:29:15,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-08-21 13:29:15,999 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:29:15,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:29:16,007 INFO L225 Difference]: With dead ends: 4205 [2021-08-21 13:29:16,007 INFO L226 Difference]: Without dead ends: 4142 [2021-08-21 13:29:16,007 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 447 ImplicationChecksByTransitivity, 659.0ms TimeCoverageRelationStatistics Valid=217, Invalid=1945, Unknown=0, NotChecked=0, Total=2162 [2021-08-21 13:29:16,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4142 states. [2021-08-21 13:29:16,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4142 to 3646. [2021-08-21 13:29:16,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3646 states, 3645 states have (on average 3.349519890260631) internal successors, (12209), 3645 states have internal predecessors, (12209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:29:16,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3646 states to 3646 states and 12209 transitions. [2021-08-21 13:29:16,058 INFO L78 Accepts]: Start accepts. Automaton has 3646 states and 12209 transitions. Word has length 39 [2021-08-21 13:29:16,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:29:16,058 INFO L470 AbstractCegarLoop]: Abstraction has 3646 states and 12209 transitions. [2021-08-21 13:29:16,058 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:29:16,058 INFO L276 IsEmpty]: Start isEmpty. Operand 3646 states and 12209 transitions. [2021-08-21 13:29:16,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:29:16,063 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:29:16,063 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:29:16,063 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable124 [2021-08-21 13:29:16,064 INFO L402 AbstractCegarLoop]: === Iteration 126 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:29:16,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:29:16,064 INFO L82 PathProgramCache]: Analyzing trace with hash 1473787804, now seen corresponding path program 126 times [2021-08-21 13:29:16,064 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:29:16,064 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1833315913] [2021-08-21 13:29:16,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:29:16,064 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:29:16,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:29:16,255 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:29:16,256 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:29:16,256 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1833315913] [2021-08-21 13:29:16,256 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1833315913] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:29:16,256 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:29:16,256 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-08-21 13:29:16,256 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [355316308] [2021-08-21 13:29:16,256 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-08-21 13:29:16,256 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:29:16,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-08-21 13:29:16,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-08-21 13:29:16,256 INFO L87 Difference]: Start difference. First operand 3646 states and 12209 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:29:17,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:29:17,586 INFO L93 Difference]: Finished difference Result 4360 states and 14335 transitions. [2021-08-21 13:29:17,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-08-21 13:29:17,586 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:29:17,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:29:17,615 INFO L225 Difference]: With dead ends: 4360 [2021-08-21 13:29:17,615 INFO L226 Difference]: Without dead ends: 4317 [2021-08-21 13:29:17,616 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 745 ImplicationChecksByTransitivity, 815.3ms TimeCoverageRelationStatistics Valid=294, Invalid=2786, Unknown=0, NotChecked=0, Total=3080 [2021-08-21 13:29:17,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4317 states. [2021-08-21 13:29:17,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4317 to 3654. [2021-08-21 13:29:17,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3654 states, 3653 states have (on average 3.3476594579797427) internal successors, (12229), 3653 states have internal predecessors, (12229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:29:17,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3654 states to 3654 states and 12229 transitions. [2021-08-21 13:29:17,663 INFO L78 Accepts]: Start accepts. Automaton has 3654 states and 12229 transitions. Word has length 39 [2021-08-21 13:29:17,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:29:17,663 INFO L470 AbstractCegarLoop]: Abstraction has 3654 states and 12229 transitions. [2021-08-21 13:29:17,663 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:29:17,663 INFO L276 IsEmpty]: Start isEmpty. Operand 3654 states and 12229 transitions. [2021-08-21 13:29:17,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:29:17,668 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:29:17,668 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:29:17,668 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable125 [2021-08-21 13:29:17,669 INFO L402 AbstractCegarLoop]: === Iteration 127 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:29:17,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:29:17,682 INFO L82 PathProgramCache]: Analyzing trace with hash -306810498, now seen corresponding path program 127 times [2021-08-21 13:29:17,682 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:29:17,682 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2136075743] [2021-08-21 13:29:17,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:29:17,686 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:29:17,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:29:17,975 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:29:17,975 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:29:17,975 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2136075743] [2021-08-21 13:29:17,975 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2136075743] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:29:17,975 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:29:17,975 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-08-21 13:29:17,976 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [70503746] [2021-08-21 13:29:17,976 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-08-21 13:29:17,976 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:29:17,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-08-21 13:29:17,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-08-21 13:29:17,976 INFO L87 Difference]: Start difference. First operand 3654 states and 12229 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:29:19,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:29:19,489 INFO L93 Difference]: Finished difference Result 4348 states and 14297 transitions. [2021-08-21 13:29:19,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2021-08-21 13:29:19,489 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:29:19,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:29:19,498 INFO L225 Difference]: With dead ends: 4348 [2021-08-21 13:29:19,498 INFO L226 Difference]: Without dead ends: 4296 [2021-08-21 13:29:19,498 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 706 ImplicationChecksByTransitivity, 952.4ms TimeCoverageRelationStatistics Valid=286, Invalid=2684, Unknown=0, NotChecked=0, Total=2970 [2021-08-21 13:29:19,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4296 states. [2021-08-21 13:29:19,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4296 to 3646. [2021-08-21 13:29:19,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3646 states, 3645 states have (on average 3.349519890260631) internal successors, (12209), 3645 states have internal predecessors, (12209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:29:19,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3646 states to 3646 states and 12209 transitions. [2021-08-21 13:29:19,549 INFO L78 Accepts]: Start accepts. Automaton has 3646 states and 12209 transitions. Word has length 39 [2021-08-21 13:29:19,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:29:19,549 INFO L470 AbstractCegarLoop]: Abstraction has 3646 states and 12209 transitions. [2021-08-21 13:29:19,550 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:29:19,550 INFO L276 IsEmpty]: Start isEmpty. Operand 3646 states and 12209 transitions. [2021-08-21 13:29:19,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:29:19,554 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:29:19,554 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:29:19,555 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126 [2021-08-21 13:29:19,555 INFO L402 AbstractCegarLoop]: === Iteration 128 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:29:19,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:29:19,555 INFO L82 PathProgramCache]: Analyzing trace with hash -1902695922, now seen corresponding path program 128 times [2021-08-21 13:29:19,555 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:29:19,555 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [196691483] [2021-08-21 13:29:19,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:29:19,555 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:29:19,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:29:19,831 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:29:19,831 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:29:19,831 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [196691483] [2021-08-21 13:29:19,831 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [196691483] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:29:19,831 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:29:19,831 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-08-21 13:29:19,831 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434458833] [2021-08-21 13:29:19,831 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-08-21 13:29:19,832 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:29:19,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-08-21 13:29:19,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-08-21 13:29:19,833 INFO L87 Difference]: Start difference. First operand 3646 states and 12209 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:29:21,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:29:21,071 INFO L93 Difference]: Finished difference Result 4325 states and 14220 transitions. [2021-08-21 13:29:21,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-08-21 13:29:21,074 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:29:21,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:29:21,082 INFO L225 Difference]: With dead ends: 4325 [2021-08-21 13:29:21,082 INFO L226 Difference]: Without dead ends: 4270 [2021-08-21 13:29:21,083 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 474 ImplicationChecksByTransitivity, 761.4ms TimeCoverageRelationStatistics Valid=233, Invalid=2023, Unknown=0, NotChecked=0, Total=2256 [2021-08-21 13:29:21,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4270 states. [2021-08-21 13:29:21,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4270 to 3648. [2021-08-21 13:29:21,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3648 states, 3647 states have (on average 3.348505621058404) internal successors, (12212), 3647 states have internal predecessors, (12212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:29:21,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3648 states to 3648 states and 12212 transitions. [2021-08-21 13:29:21,132 INFO L78 Accepts]: Start accepts. Automaton has 3648 states and 12212 transitions. Word has length 39 [2021-08-21 13:29:21,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:29:21,132 INFO L470 AbstractCegarLoop]: Abstraction has 3648 states and 12212 transitions. [2021-08-21 13:29:21,132 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:29:21,132 INFO L276 IsEmpty]: Start isEmpty. Operand 3648 states and 12212 transitions. [2021-08-21 13:29:21,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:29:21,137 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:29:21,137 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:29:21,137 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127 [2021-08-21 13:29:21,137 INFO L402 AbstractCegarLoop]: === Iteration 129 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:29:21,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:29:21,137 INFO L82 PathProgramCache]: Analyzing trace with hash -730043700, now seen corresponding path program 129 times [2021-08-21 13:29:21,138 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:29:21,138 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1441714883] [2021-08-21 13:29:21,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:29:21,138 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:29:21,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:29:21,433 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:29:21,434 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:29:21,434 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1441714883] [2021-08-21 13:29:21,434 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1441714883] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:29:21,434 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:29:21,434 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-08-21 13:29:21,434 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1776898798] [2021-08-21 13:29:21,434 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-08-21 13:29:21,434 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:29:21,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-08-21 13:29:21,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-08-21 13:29:21,435 INFO L87 Difference]: Start difference. First operand 3648 states and 12212 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:29:22,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:29:22,596 INFO L93 Difference]: Finished difference Result 4260 states and 14068 transitions. [2021-08-21 13:29:22,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-08-21 13:29:22,596 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:29:22,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:29:22,605 INFO L225 Difference]: With dead ends: 4260 [2021-08-21 13:29:22,605 INFO L226 Difference]: Without dead ends: 4214 [2021-08-21 13:29:22,606 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 384 ImplicationChecksByTransitivity, 705.3ms TimeCoverageRelationStatistics Valid=208, Invalid=1772, Unknown=0, NotChecked=0, Total=1980 [2021-08-21 13:29:22,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4214 states. [2021-08-21 13:29:22,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4214 to 3652. [2021-08-21 13:29:22,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3652 states, 3651 states have (on average 3.3470282114489183) internal successors, (12220), 3651 states have internal predecessors, (12220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:29:22,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3652 states to 3652 states and 12220 transitions. [2021-08-21 13:29:22,659 INFO L78 Accepts]: Start accepts. Automaton has 3652 states and 12220 transitions. Word has length 39 [2021-08-21 13:29:22,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:29:22,659 INFO L470 AbstractCegarLoop]: Abstraction has 3652 states and 12220 transitions. [2021-08-21 13:29:22,659 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:29:22,659 INFO L276 IsEmpty]: Start isEmpty. Operand 3652 states and 12220 transitions. [2021-08-21 13:29:22,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:29:22,664 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:29:22,664 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:29:22,664 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128 [2021-08-21 13:29:22,664 INFO L402 AbstractCegarLoop]: === Iteration 130 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:29:22,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:29:22,665 INFO L82 PathProgramCache]: Analyzing trace with hash -977509862, now seen corresponding path program 130 times [2021-08-21 13:29:22,665 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:29:22,665 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1398036982] [2021-08-21 13:29:22,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:29:22,665 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:29:22,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:29:22,949 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:29:22,949 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:29:22,949 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1398036982] [2021-08-21 13:29:22,949 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1398036982] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:29:22,950 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:29:22,950 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-08-21 13:29:22,950 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217806086] [2021-08-21 13:29:22,950 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-08-21 13:29:22,950 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:29:22,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-08-21 13:29:22,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-08-21 13:29:22,950 INFO L87 Difference]: Start difference. First operand 3652 states and 12220 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:29:24,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:29:24,081 INFO L93 Difference]: Finished difference Result 4252 states and 14081 transitions. [2021-08-21 13:29:24,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-08-21 13:29:24,081 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:29:24,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:29:24,090 INFO L225 Difference]: With dead ends: 4252 [2021-08-21 13:29:24,090 INFO L226 Difference]: Without dead ends: 4203 [2021-08-21 13:29:24,091 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 562 ImplicationChecksByTransitivity, 740.6ms TimeCoverageRelationStatistics Valid=257, Invalid=2293, Unknown=0, NotChecked=0, Total=2550 [2021-08-21 13:29:24,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4203 states. [2021-08-21 13:29:24,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4203 to 3642. [2021-08-21 13:29:24,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3642 states, 3641 states have (on average 3.3504531722054383) internal successors, (12199), 3641 states have internal predecessors, (12199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:29:24,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3642 states to 3642 states and 12199 transitions. [2021-08-21 13:29:24,149 INFO L78 Accepts]: Start accepts. Automaton has 3642 states and 12199 transitions. Word has length 39 [2021-08-21 13:29:24,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:29:24,149 INFO L470 AbstractCegarLoop]: Abstraction has 3642 states and 12199 transitions. [2021-08-21 13:29:24,149 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:29:24,149 INFO L276 IsEmpty]: Start isEmpty. Operand 3642 states and 12199 transitions. [2021-08-21 13:29:24,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:29:24,155 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:29:24,155 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:29:24,155 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable129 [2021-08-21 13:29:24,155 INFO L402 AbstractCegarLoop]: === Iteration 131 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:29:24,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:29:24,155 INFO L82 PathProgramCache]: Analyzing trace with hash 561365660, now seen corresponding path program 131 times [2021-08-21 13:29:24,155 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:29:24,155 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1143948195] [2021-08-21 13:29:24,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:29:24,156 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:29:24,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:29:24,407 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:29:24,407 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:29:24,407 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1143948195] [2021-08-21 13:29:24,407 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1143948195] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:29:24,407 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:29:24,407 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-08-21 13:29:24,408 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380469681] [2021-08-21 13:29:24,408 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-08-21 13:29:24,408 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:29:24,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-08-21 13:29:24,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-08-21 13:29:24,408 INFO L87 Difference]: Start difference. First operand 3642 states and 12199 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:29:25,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:29:25,205 INFO L93 Difference]: Finished difference Result 4189 states and 13952 transitions. [2021-08-21 13:29:25,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-08-21 13:29:25,206 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:29:25,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:29:25,214 INFO L225 Difference]: With dead ends: 4189 [2021-08-21 13:29:25,214 INFO L226 Difference]: Without dead ends: 4122 [2021-08-21 13:29:25,214 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 310 ImplicationChecksByTransitivity, 460.3ms TimeCoverageRelationStatistics Valid=177, Invalid=1545, Unknown=0, NotChecked=0, Total=1722 [2021-08-21 13:29:25,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4122 states. [2021-08-21 13:29:25,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4122 to 3682. [2021-08-21 13:29:25,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3682 states, 3681 states have (on average 3.343384949741918) internal successors, (12307), 3681 states have internal predecessors, (12307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:29:25,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3682 states to 3682 states and 12307 transitions. [2021-08-21 13:29:25,264 INFO L78 Accepts]: Start accepts. Automaton has 3682 states and 12307 transitions. Word has length 39 [2021-08-21 13:29:25,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:29:25,264 INFO L470 AbstractCegarLoop]: Abstraction has 3682 states and 12307 transitions. [2021-08-21 13:29:25,264 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:29:25,264 INFO L276 IsEmpty]: Start isEmpty. Operand 3682 states and 12307 transitions. [2021-08-21 13:29:25,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:29:25,295 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:29:25,296 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:29:25,296 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130 [2021-08-21 13:29:25,296 INFO L402 AbstractCegarLoop]: === Iteration 132 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:29:25,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:29:25,296 INFO L82 PathProgramCache]: Analyzing trace with hash 430770812, now seen corresponding path program 132 times [2021-08-21 13:29:25,296 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:29:25,296 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1754987930] [2021-08-21 13:29:25,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:29:25,296 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:29:25,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:29:25,494 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:29:25,495 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:29:25,495 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1754987930] [2021-08-21 13:29:25,495 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1754987930] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:29:25,495 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:29:25,495 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-08-21 13:29:25,495 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635680295] [2021-08-21 13:29:25,495 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-08-21 13:29:25,495 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:29:25,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-08-21 13:29:25,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-08-21 13:29:25,495 INFO L87 Difference]: Start difference. First operand 3682 states and 12307 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:29:26,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:29:26,513 INFO L93 Difference]: Finished difference Result 4177 states and 13912 transitions. [2021-08-21 13:29:26,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-08-21 13:29:26,513 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:29:26,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:29:26,521 INFO L225 Difference]: With dead ends: 4177 [2021-08-21 13:29:26,521 INFO L226 Difference]: Without dead ends: 4114 [2021-08-21 13:29:26,522 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 335 ImplicationChecksByTransitivity, 541.2ms TimeCoverageRelationStatistics Valid=185, Invalid=1621, Unknown=0, NotChecked=0, Total=1806 [2021-08-21 13:29:26,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4114 states. [2021-08-21 13:29:26,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4114 to 3674. [2021-08-21 13:29:26,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3674 states, 3673 states have (on average 3.3441328614211816) internal successors, (12283), 3673 states have internal predecessors, (12283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:29:26,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3674 states to 3674 states and 12283 transitions. [2021-08-21 13:29:26,571 INFO L78 Accepts]: Start accepts. Automaton has 3674 states and 12283 transitions. Word has length 39 [2021-08-21 13:29:26,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:29:26,571 INFO L470 AbstractCegarLoop]: Abstraction has 3674 states and 12283 transitions. [2021-08-21 13:29:26,571 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:29:26,571 INFO L276 IsEmpty]: Start isEmpty. Operand 3674 states and 12283 transitions. [2021-08-21 13:29:26,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:29:26,576 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:29:26,576 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:29:26,576 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131 [2021-08-21 13:29:26,576 INFO L402 AbstractCegarLoop]: === Iteration 133 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:29:26,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:29:26,576 INFO L82 PathProgramCache]: Analyzing trace with hash -99129636, now seen corresponding path program 133 times [2021-08-21 13:29:26,576 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:29:26,576 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1871176809] [2021-08-21 13:29:26,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:29:26,577 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:29:26,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:29:26,813 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:29:26,813 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:29:26,813 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1871176809] [2021-08-21 13:29:26,813 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1871176809] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:29:26,813 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:29:26,813 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-08-21 13:29:26,813 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1300096152] [2021-08-21 13:29:26,813 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-08-21 13:29:26,813 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:29:26,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-08-21 13:29:26,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-08-21 13:29:26,814 INFO L87 Difference]: Start difference. First operand 3674 states and 12283 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:29:27,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:29:27,864 INFO L93 Difference]: Finished difference Result 4177 states and 13904 transitions. [2021-08-21 13:29:27,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-08-21 13:29:27,865 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:29:27,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:29:27,872 INFO L225 Difference]: With dead ends: 4177 [2021-08-21 13:29:27,872 INFO L226 Difference]: Without dead ends: 4038 [2021-08-21 13:29:27,872 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 360 ImplicationChecksByTransitivity, 574.5ms TimeCoverageRelationStatistics Valid=191, Invalid=1701, Unknown=0, NotChecked=0, Total=1892 [2021-08-21 13:29:27,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4038 states. [2021-08-21 13:29:27,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4038 to 3626. [2021-08-21 13:29:27,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3626 states, 3625 states have (on average 3.348689655172414) internal successors, (12139), 3625 states have internal predecessors, (12139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:29:27,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3626 states to 3626 states and 12139 transitions. [2021-08-21 13:29:27,918 INFO L78 Accepts]: Start accepts. Automaton has 3626 states and 12139 transitions. Word has length 39 [2021-08-21 13:29:27,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:29:27,918 INFO L470 AbstractCegarLoop]: Abstraction has 3626 states and 12139 transitions. [2021-08-21 13:29:27,919 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:29:27,919 INFO L276 IsEmpty]: Start isEmpty. Operand 3626 states and 12139 transitions. [2021-08-21 13:29:27,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:29:27,923 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:29:27,923 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:29:27,923 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132 [2021-08-21 13:29:27,923 INFO L402 AbstractCegarLoop]: === Iteration 134 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:29:27,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:29:27,924 INFO L82 PathProgramCache]: Analyzing trace with hash -1369572806, now seen corresponding path program 134 times [2021-08-21 13:29:27,924 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:29:27,924 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2136223685] [2021-08-21 13:29:27,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:29:27,924 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:29:27,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:29:28,162 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:29:28,162 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:29:28,162 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2136223685] [2021-08-21 13:29:28,162 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2136223685] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:29:28,162 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:29:28,162 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-08-21 13:29:28,162 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707955997] [2021-08-21 13:29:28,162 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-08-21 13:29:28,163 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:29:28,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-08-21 13:29:28,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-08-21 13:29:28,163 INFO L87 Difference]: Start difference. First operand 3626 states and 12139 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:29:29,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:29:29,733 INFO L93 Difference]: Finished difference Result 4276 states and 14125 transitions. [2021-08-21 13:29:29,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2021-08-21 13:29:29,733 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:29:29,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:29:29,741 INFO L225 Difference]: With dead ends: 4276 [2021-08-21 13:29:29,741 INFO L226 Difference]: Without dead ends: 4170 [2021-08-21 13:29:29,742 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 785 ImplicationChecksByTransitivity, 942.8ms TimeCoverageRelationStatistics Valid=284, Invalid=2908, Unknown=0, NotChecked=0, Total=3192 [2021-08-21 13:29:29,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4170 states. [2021-08-21 13:29:29,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4170 to 3642. [2021-08-21 13:29:29,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3642 states, 3641 states have (on average 3.3466080747047515) internal successors, (12185), 3641 states have internal predecessors, (12185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:29:29,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3642 states to 3642 states and 12185 transitions. [2021-08-21 13:29:29,795 INFO L78 Accepts]: Start accepts. Automaton has 3642 states and 12185 transitions. Word has length 39 [2021-08-21 13:29:29,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:29:29,795 INFO L470 AbstractCegarLoop]: Abstraction has 3642 states and 12185 transitions. [2021-08-21 13:29:29,796 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:29:29,796 INFO L276 IsEmpty]: Start isEmpty. Operand 3642 states and 12185 transitions. [2021-08-21 13:29:29,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:29:29,800 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:29:29,801 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:29:29,801 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable133 [2021-08-21 13:29:29,801 INFO L402 AbstractCegarLoop]: === Iteration 135 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:29:29,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:29:29,801 INFO L82 PathProgramCache]: Analyzing trace with hash 1430503590, now seen corresponding path program 135 times [2021-08-21 13:29:29,801 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:29:29,801 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [174241025] [2021-08-21 13:29:29,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:29:29,801 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:29:29,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:29:30,091 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:29:30,091 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:29:30,091 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [174241025] [2021-08-21 13:29:30,091 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [174241025] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:29:30,091 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:29:30,091 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-08-21 13:29:30,091 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898549197] [2021-08-21 13:29:30,091 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-08-21 13:29:30,091 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:29:30,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-08-21 13:29:30,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-08-21 13:29:30,092 INFO L87 Difference]: Start difference. First operand 3642 states and 12185 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:29:31,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:29:31,472 INFO L93 Difference]: Finished difference Result 4285 states and 14055 transitions. [2021-08-21 13:29:31,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-08-21 13:29:31,472 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:29:31,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:29:31,480 INFO L225 Difference]: With dead ends: 4285 [2021-08-21 13:29:31,481 INFO L226 Difference]: Without dead ends: 4221 [2021-08-21 13:29:31,481 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 752 ImplicationChecksByTransitivity, 924.9ms TimeCoverageRelationStatistics Valid=283, Invalid=2797, Unknown=0, NotChecked=0, Total=3080 [2021-08-21 13:29:31,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4221 states. [2021-08-21 13:29:31,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4221 to 3642. [2021-08-21 13:29:31,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3642 states, 3641 states have (on average 3.3466080747047515) internal successors, (12185), 3641 states have internal predecessors, (12185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:29:31,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3642 states to 3642 states and 12185 transitions. [2021-08-21 13:29:31,535 INFO L78 Accepts]: Start accepts. Automaton has 3642 states and 12185 transitions. Word has length 39 [2021-08-21 13:29:31,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:29:31,535 INFO L470 AbstractCegarLoop]: Abstraction has 3642 states and 12185 transitions. [2021-08-21 13:29:31,535 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:29:31,535 INFO L276 IsEmpty]: Start isEmpty. Operand 3642 states and 12185 transitions. [2021-08-21 13:29:31,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:29:31,540 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:29:31,540 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:29:31,540 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable134 [2021-08-21 13:29:31,540 INFO L402 AbstractCegarLoop]: === Iteration 136 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:29:31,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:29:31,541 INFO L82 PathProgramCache]: Analyzing trace with hash -1945980136, now seen corresponding path program 136 times [2021-08-21 13:29:31,541 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:29:31,541 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1422095533] [2021-08-21 13:29:31,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:29:31,541 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:29:31,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:29:31,808 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:29:31,808 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:29:31,809 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1422095533] [2021-08-21 13:29:31,809 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1422095533] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:29:31,809 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:29:31,809 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-08-21 13:29:31,809 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1653760829] [2021-08-21 13:29:31,809 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-08-21 13:29:31,809 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:29:31,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-08-21 13:29:31,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-08-21 13:29:31,809 INFO L87 Difference]: Start difference. First operand 3642 states and 12185 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:29:32,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:29:32,791 INFO L93 Difference]: Finished difference Result 4182 states and 13783 transitions. [2021-08-21 13:29:32,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-08-21 13:29:32,791 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:29:32,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:29:32,799 INFO L225 Difference]: With dead ends: 4182 [2021-08-21 13:29:32,799 INFO L226 Difference]: Without dead ends: 4139 [2021-08-21 13:29:32,800 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 420 ImplicationChecksByTransitivity, 601.5ms TimeCoverageRelationStatistics Valid=202, Invalid=1868, Unknown=0, NotChecked=0, Total=2070 [2021-08-21 13:29:32,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4139 states. [2021-08-21 13:29:32,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4139 to 3648. [2021-08-21 13:29:32,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3648 states, 3647 states have (on average 3.344666849465314) internal successors, (12198), 3647 states have internal predecessors, (12198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:29:32,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3648 states to 3648 states and 12198 transitions. [2021-08-21 13:29:32,850 INFO L78 Accepts]: Start accepts. Automaton has 3648 states and 12198 transitions. Word has length 39 [2021-08-21 13:29:32,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:29:32,850 INFO L470 AbstractCegarLoop]: Abstraction has 3648 states and 12198 transitions. [2021-08-21 13:29:32,850 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:29:32,850 INFO L276 IsEmpty]: Start isEmpty. Operand 3648 states and 12198 transitions. [2021-08-21 13:29:32,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:29:32,855 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:29:32,855 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:29:32,855 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable135 [2021-08-21 13:29:32,855 INFO L402 AbstractCegarLoop]: === Iteration 137 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:29:32,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:29:32,856 INFO L82 PathProgramCache]: Analyzing trace with hash -1925831402, now seen corresponding path program 137 times [2021-08-21 13:29:32,856 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:29:32,856 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1681356170] [2021-08-21 13:29:32,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:29:32,856 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:29:32,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:29:33,131 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:29:33,131 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:29:33,131 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1681356170] [2021-08-21 13:29:33,131 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1681356170] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:29:33,131 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:29:33,131 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-08-21 13:29:33,132 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [998745928] [2021-08-21 13:29:33,132 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-08-21 13:29:33,132 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:29:33,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-08-21 13:29:33,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-08-21 13:29:33,132 INFO L87 Difference]: Start difference. First operand 3648 states and 12198 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:29:34,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:29:34,340 INFO L93 Difference]: Finished difference Result 4151 states and 13720 transitions. [2021-08-21 13:29:34,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-08-21 13:29:34,341 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:29:34,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:29:34,349 INFO L225 Difference]: With dead ends: 4151 [2021-08-21 13:29:34,349 INFO L226 Difference]: Without dead ends: 4108 [2021-08-21 13:29:34,350 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 478 ImplicationChecksByTransitivity, 788.5ms TimeCoverageRelationStatistics Valid=221, Invalid=2035, Unknown=0, NotChecked=0, Total=2256 [2021-08-21 13:29:34,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4108 states. [2021-08-21 13:29:34,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4108 to 3644. [2021-08-21 13:29:34,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3644 states, 3643 states have (on average 3.3455942904199834) internal successors, (12188), 3643 states have internal predecessors, (12188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:29:34,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3644 states to 3644 states and 12188 transitions. [2021-08-21 13:29:34,405 INFO L78 Accepts]: Start accepts. Automaton has 3644 states and 12188 transitions. Word has length 39 [2021-08-21 13:29:34,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:29:34,405 INFO L470 AbstractCegarLoop]: Abstraction has 3644 states and 12188 transitions. [2021-08-21 13:29:34,405 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:29:34,405 INFO L276 IsEmpty]: Start isEmpty. Operand 3644 states and 12188 transitions. [2021-08-21 13:29:34,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:29:34,410 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:29:34,410 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:29:34,410 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable136 [2021-08-21 13:29:34,410 INFO L402 AbstractCegarLoop]: === Iteration 138 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:29:34,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:29:34,410 INFO L82 PathProgramCache]: Analyzing trace with hash -773327914, now seen corresponding path program 138 times [2021-08-21 13:29:34,410 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:29:34,410 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [682745423] [2021-08-21 13:29:34,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:29:34,411 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:29:34,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:29:34,725 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:29:34,725 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:29:34,725 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [682745423] [2021-08-21 13:29:34,725 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [682745423] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:29:34,725 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:29:34,725 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-08-21 13:29:34,725 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [764501809] [2021-08-21 13:29:34,725 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-08-21 13:29:34,725 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:29:34,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-08-21 13:29:34,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-08-21 13:29:34,726 INFO L87 Difference]: Start difference. First operand 3644 states and 12188 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:29:35,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:29:35,913 INFO L93 Difference]: Finished difference Result 4160 states and 13742 transitions. [2021-08-21 13:29:35,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-08-21 13:29:35,913 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:29:35,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:29:35,920 INFO L225 Difference]: With dead ends: 4160 [2021-08-21 13:29:35,920 INFO L226 Difference]: Without dead ends: 4100 [2021-08-21 13:29:35,920 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 452 ImplicationChecksByTransitivity, 729.0ms TimeCoverageRelationStatistics Valid=213, Invalid=1949, Unknown=0, NotChecked=0, Total=2162 [2021-08-21 13:29:35,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4100 states. [2021-08-21 13:29:35,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4100 to 3642. [2021-08-21 13:29:35,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3642 states, 3641 states have (on average 3.3460587750617963) internal successors, (12183), 3641 states have internal predecessors, (12183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:29:35,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3642 states to 3642 states and 12183 transitions. [2021-08-21 13:29:35,964 INFO L78 Accepts]: Start accepts. Automaton has 3642 states and 12183 transitions. Word has length 39 [2021-08-21 13:29:35,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:29:35,964 INFO L470 AbstractCegarLoop]: Abstraction has 3642 states and 12183 transitions. [2021-08-21 13:29:35,964 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:29:35,965 INFO L276 IsEmpty]: Start isEmpty. Operand 3642 states and 12183 transitions. [2021-08-21 13:29:35,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:29:35,969 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:29:35,969 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:29:35,969 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137 [2021-08-21 13:29:35,969 INFO L402 AbstractCegarLoop]: === Iteration 139 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:29:35,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:29:35,969 INFO L82 PathProgramCache]: Analyzing trace with hash 1442072840, now seen corresponding path program 139 times [2021-08-21 13:29:35,969 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:29:35,969 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [294248545] [2021-08-21 13:29:35,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:29:35,970 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:29:35,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:29:36,233 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:29:36,233 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:29:36,233 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [294248545] [2021-08-21 13:29:36,233 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [294248545] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:29:36,233 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:29:36,233 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-08-21 13:29:36,233 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1642313841] [2021-08-21 13:29:36,233 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-08-21 13:29:36,233 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:29:36,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-08-21 13:29:36,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2021-08-21 13:29:36,234 INFO L87 Difference]: Start difference. First operand 3642 states and 12183 transitions. Second operand has 15 states, 15 states have (on average 2.6) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:29:37,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:29:37,185 INFO L93 Difference]: Finished difference Result 4128 states and 13682 transitions. [2021-08-21 13:29:37,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-08-21 13:29:37,186 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.6) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:29:37,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:29:37,193 INFO L225 Difference]: With dead ends: 4128 [2021-08-21 13:29:37,193 INFO L226 Difference]: Without dead ends: 4052 [2021-08-21 13:29:37,194 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 341 ImplicationChecksByTransitivity, 591.9ms TimeCoverageRelationStatistics Valid=178, Invalid=1544, Unknown=0, NotChecked=0, Total=1722 [2021-08-21 13:29:37,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4052 states. [2021-08-21 13:29:37,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4052 to 3650. [2021-08-21 13:29:37,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3650 states, 3649 states have (on average 3.3431077007399286) internal successors, (12199), 3649 states have internal predecessors, (12199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:29:37,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3650 states to 3650 states and 12199 transitions. [2021-08-21 13:29:37,242 INFO L78 Accepts]: Start accepts. Automaton has 3650 states and 12199 transitions. Word has length 39 [2021-08-21 13:29:37,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:29:37,242 INFO L470 AbstractCegarLoop]: Abstraction has 3650 states and 12199 transitions. [2021-08-21 13:29:37,242 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.6) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:29:37,242 INFO L276 IsEmpty]: Start isEmpty. Operand 3650 states and 12199 transitions. [2021-08-21 13:29:37,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:29:37,246 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:29:37,247 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:29:37,247 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable138 [2021-08-21 13:29:37,247 INFO L402 AbstractCegarLoop]: === Iteration 140 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:29:37,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:29:37,247 INFO L82 PathProgramCache]: Analyzing trace with hash 424019228, now seen corresponding path program 140 times [2021-08-21 13:29:37,247 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:29:37,247 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1722048709] [2021-08-21 13:29:37,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:29:37,247 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:29:37,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:29:37,483 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:29:37,483 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:29:37,483 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1722048709] [2021-08-21 13:29:37,483 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1722048709] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:29:37,483 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:29:37,483 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-08-21 13:29:37,483 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2102006346] [2021-08-21 13:29:37,484 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-08-21 13:29:37,484 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:29:37,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-08-21 13:29:37,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-08-21 13:29:37,484 INFO L87 Difference]: Start difference. First operand 3650 states and 12199 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:29:38,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:29:38,465 INFO L93 Difference]: Finished difference Result 4110 states and 13628 transitions. [2021-08-21 13:29:38,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-08-21 13:29:38,465 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:29:38,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:29:38,483 INFO L225 Difference]: With dead ends: 4110 [2021-08-21 13:29:38,483 INFO L226 Difference]: Without dead ends: 4040 [2021-08-21 13:29:38,483 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 396 ImplicationChecksByTransitivity, 628.5ms TimeCoverageRelationStatistics Valid=194, Invalid=1786, Unknown=0, NotChecked=0, Total=1980 [2021-08-21 13:29:38,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4040 states. [2021-08-21 13:29:38,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4040 to 3638. [2021-08-21 13:29:38,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3638 states, 3637 states have (on average 3.346439373109706) internal successors, (12171), 3637 states have internal predecessors, (12171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:29:38,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3638 states to 3638 states and 12171 transitions. [2021-08-21 13:29:38,529 INFO L78 Accepts]: Start accepts. Automaton has 3638 states and 12171 transitions. Word has length 39 [2021-08-21 13:29:38,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:29:38,529 INFO L470 AbstractCegarLoop]: Abstraction has 3638 states and 12171 transitions. [2021-08-21 13:29:38,529 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:29:38,529 INFO L276 IsEmpty]: Start isEmpty. Operand 3638 states and 12171 transitions. [2021-08-21 13:29:38,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:29:38,534 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:29:38,534 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:29:38,534 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable139 [2021-08-21 13:29:38,534 INFO L402 AbstractCegarLoop]: === Iteration 141 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:29:38,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:29:38,534 INFO L82 PathProgramCache]: Analyzing trace with hash -255172104, now seen corresponding path program 141 times [2021-08-21 13:29:38,534 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:29:38,534 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1055043530] [2021-08-21 13:29:38,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:29:38,534 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:29:38,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:29:38,798 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:29:38,799 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:29:38,799 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1055043530] [2021-08-21 13:29:38,799 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1055043530] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:29:38,799 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:29:38,799 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-08-21 13:29:38,799 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1207705619] [2021-08-21 13:29:38,799 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-08-21 13:29:38,799 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:29:38,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-08-21 13:29:38,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2021-08-21 13:29:38,799 INFO L87 Difference]: Start difference. First operand 3638 states and 12171 transitions. Second operand has 15 states, 15 states have (on average 2.6) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:29:39,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:29:39,735 INFO L93 Difference]: Finished difference Result 4059 states and 13491 transitions. [2021-08-21 13:29:39,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-08-21 13:29:39,736 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.6) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:29:39,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:29:39,745 INFO L225 Difference]: With dead ends: 4059 [2021-08-21 13:29:39,745 INFO L226 Difference]: Without dead ends: 3983 [2021-08-21 13:29:39,746 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 290 ImplicationChecksByTransitivity, 579.9ms TimeCoverageRelationStatistics Valid=165, Invalid=1395, Unknown=0, NotChecked=0, Total=1560 [2021-08-21 13:29:39,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3983 states. [2021-08-21 13:29:39,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3983 to 3670. [2021-08-21 13:29:39,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3670 states, 3669 states have (on average 3.341237394385391) internal successors, (12259), 3669 states have internal predecessors, (12259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:29:39,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3670 states to 3670 states and 12259 transitions. [2021-08-21 13:29:39,801 INFO L78 Accepts]: Start accepts. Automaton has 3670 states and 12259 transitions. Word has length 39 [2021-08-21 13:29:39,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:29:39,801 INFO L470 AbstractCegarLoop]: Abstraction has 3670 states and 12259 transitions. [2021-08-21 13:29:39,801 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.6) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:29:39,801 INFO L276 IsEmpty]: Start isEmpty. Operand 3670 states and 12259 transitions. [2021-08-21 13:29:39,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:29:39,806 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:29:39,806 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:29:39,806 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140 [2021-08-21 13:29:39,806 INFO L402 AbstractCegarLoop]: === Iteration 142 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:29:39,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:29:39,806 INFO L82 PathProgramCache]: Analyzing trace with hash -1273225716, now seen corresponding path program 142 times [2021-08-21 13:29:39,807 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:29:39,807 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1869225183] [2021-08-21 13:29:39,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:29:39,807 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:29:39,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:29:40,088 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:29:40,088 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:29:40,088 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1869225183] [2021-08-21 13:29:40,088 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1869225183] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:29:40,088 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:29:40,088 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-08-21 13:29:40,088 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745412841] [2021-08-21 13:29:40,088 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-08-21 13:29:40,089 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:29:40,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-08-21 13:29:40,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-08-21 13:29:40,089 INFO L87 Difference]: Start difference. First operand 3670 states and 12259 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:29:41,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:29:41,122 INFO L93 Difference]: Finished difference Result 4041 states and 13437 transitions. [2021-08-21 13:29:41,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-08-21 13:29:41,122 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:29:41,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:29:41,130 INFO L225 Difference]: With dead ends: 4041 [2021-08-21 13:29:41,130 INFO L226 Difference]: Without dead ends: 3975 [2021-08-21 13:29:41,130 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 340 ImplicationChecksByTransitivity, 657.7ms TimeCoverageRelationStatistics Valid=181, Invalid=1625, Unknown=0, NotChecked=0, Total=1806 [2021-08-21 13:29:41,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3975 states. [2021-08-21 13:29:41,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3975 to 3662. [2021-08-21 13:29:41,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3662 states, 3661 states have (on average 3.341983064736411) internal successors, (12235), 3661 states have internal predecessors, (12235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:29:41,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3662 states to 3662 states and 12235 transitions. [2021-08-21 13:29:41,183 INFO L78 Accepts]: Start accepts. Automaton has 3662 states and 12235 transitions. Word has length 39 [2021-08-21 13:29:41,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:29:41,183 INFO L470 AbstractCegarLoop]: Abstraction has 3662 states and 12235 transitions. [2021-08-21 13:29:41,183 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:29:41,183 INFO L276 IsEmpty]: Start isEmpty. Operand 3662 states and 12235 transitions. [2021-08-21 13:29:41,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:29:41,188 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:29:41,188 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:29:41,188 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141 [2021-08-21 13:29:41,188 INFO L402 AbstractCegarLoop]: === Iteration 143 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:29:41,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:29:41,188 INFO L82 PathProgramCache]: Analyzing trace with hash -1555491370, now seen corresponding path program 143 times [2021-08-21 13:29:41,188 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:29:41,189 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [706680237] [2021-08-21 13:29:41,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:29:41,189 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:29:41,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:29:41,373 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:29:41,374 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:29:41,374 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [706680237] [2021-08-21 13:29:41,374 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [706680237] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:29:41,374 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:29:41,374 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-08-21 13:29:41,374 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1916508059] [2021-08-21 13:29:41,374 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-08-21 13:29:41,374 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:29:41,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-08-21 13:29:41,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-08-21 13:29:41,375 INFO L87 Difference]: Start difference. First operand 3662 states and 12235 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:29:42,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:29:42,269 INFO L93 Difference]: Finished difference Result 4050 states and 13458 transitions. [2021-08-21 13:29:42,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-08-21 13:29:42,269 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:29:42,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:29:42,277 INFO L225 Difference]: With dead ends: 4050 [2021-08-21 13:29:42,277 INFO L226 Difference]: Without dead ends: 3888 [2021-08-21 13:29:42,278 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 339 ImplicationChecksByTransitivity, 534.1ms TimeCoverageRelationStatistics Valid=181, Invalid=1625, Unknown=0, NotChecked=0, Total=1806 [2021-08-21 13:29:42,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3888 states. [2021-08-21 13:29:42,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3888 to 3594. [2021-08-21 13:29:42,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3594 states, 3593 states have (on average 3.3529084330642918) internal successors, (12047), 3593 states have internal predecessors, (12047), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:29:42,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3594 states to 3594 states and 12047 transitions. [2021-08-21 13:29:42,325 INFO L78 Accepts]: Start accepts. Automaton has 3594 states and 12047 transitions. Word has length 39 [2021-08-21 13:29:42,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:29:42,326 INFO L470 AbstractCegarLoop]: Abstraction has 3594 states and 12047 transitions. [2021-08-21 13:29:42,326 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:29:42,326 INFO L276 IsEmpty]: Start isEmpty. Operand 3594 states and 12047 transitions. [2021-08-21 13:29:42,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:29:42,330 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:29:42,330 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:29:42,330 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142 [2021-08-21 13:29:42,330 INFO L402 AbstractCegarLoop]: === Iteration 144 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:29:42,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:29:42,330 INFO L82 PathProgramCache]: Analyzing trace with hash 402994890, now seen corresponding path program 144 times [2021-08-21 13:29:42,331 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:29:42,331 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [475298367] [2021-08-21 13:29:42,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:29:42,331 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:29:42,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:29:42,583 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:29:42,583 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:29:42,583 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [475298367] [2021-08-21 13:29:42,583 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [475298367] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:29:42,583 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:29:42,583 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 13:29:42,583 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578814748] [2021-08-21 13:29:42,583 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 13:29:42,583 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:29:42,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 13:29:42,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-08-21 13:29:42,584 INFO L87 Difference]: Start difference. First operand 3594 states and 12047 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:29:43,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:29:43,805 INFO L93 Difference]: Finished difference Result 4277 states and 14182 transitions. [2021-08-21 13:29:43,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-08-21 13:29:43,805 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:29:43,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:29:43,814 INFO L225 Difference]: With dead ends: 4277 [2021-08-21 13:29:43,814 INFO L226 Difference]: Without dead ends: 4210 [2021-08-21 13:29:43,814 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 673 ImplicationChecksByTransitivity, 718.8ms TimeCoverageRelationStatistics Valid=281, Invalid=2689, Unknown=0, NotChecked=0, Total=2970 [2021-08-21 13:29:43,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4210 states. [2021-08-21 13:29:43,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4210 to 3652. [2021-08-21 13:29:43,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3652 states, 3651 states have (on average 3.3470282114489183) internal successors, (12220), 3651 states have internal predecessors, (12220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:29:43,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3652 states to 3652 states and 12220 transitions. [2021-08-21 13:29:43,864 INFO L78 Accepts]: Start accepts. Automaton has 3652 states and 12220 transitions. Word has length 39 [2021-08-21 13:29:43,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:29:43,864 INFO L470 AbstractCegarLoop]: Abstraction has 3652 states and 12220 transitions. [2021-08-21 13:29:43,864 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:29:43,864 INFO L276 IsEmpty]: Start isEmpty. Operand 3652 states and 12220 transitions. [2021-08-21 13:29:43,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:29:43,869 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:29:43,869 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:29:43,869 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable143 [2021-08-21 13:29:43,869 INFO L402 AbstractCegarLoop]: === Iteration 145 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:29:43,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:29:43,869 INFO L82 PathProgramCache]: Analyzing trace with hash -1316621080, now seen corresponding path program 145 times [2021-08-21 13:29:43,869 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:29:43,869 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1755950210] [2021-08-21 13:29:43,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:29:43,870 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:29:43,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:29:44,070 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:29:44,070 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:29:44,070 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1755950210] [2021-08-21 13:29:44,070 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1755950210] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:29:44,070 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:29:44,070 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 13:29:44,070 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960479381] [2021-08-21 13:29:44,071 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 13:29:44,071 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:29:44,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 13:29:44,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-08-21 13:29:44,071 INFO L87 Difference]: Start difference. First operand 3652 states and 12220 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:29:45,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:29:45,469 INFO L93 Difference]: Finished difference Result 4414 states and 14539 transitions. [2021-08-21 13:29:45,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2021-08-21 13:29:45,469 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:29:45,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:29:45,478 INFO L225 Difference]: With dead ends: 4414 [2021-08-21 13:29:45,478 INFO L226 Difference]: Without dead ends: 4371 [2021-08-21 13:29:45,479 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1040 ImplicationChecksByTransitivity, 860.6ms TimeCoverageRelationStatistics Valid=351, Invalid=3681, Unknown=0, NotChecked=0, Total=4032 [2021-08-21 13:29:45,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4371 states. [2021-08-21 13:29:45,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4371 to 3658. [2021-08-21 13:29:45,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3658 states, 3657 states have (on average 3.345091605140826) internal successors, (12233), 3657 states have internal predecessors, (12233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:29:45,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3658 states to 3658 states and 12233 transitions. [2021-08-21 13:29:45,574 INFO L78 Accepts]: Start accepts. Automaton has 3658 states and 12233 transitions. Word has length 39 [2021-08-21 13:29:45,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:29:45,574 INFO L470 AbstractCegarLoop]: Abstraction has 3658 states and 12233 transitions. [2021-08-21 13:29:45,575 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:29:45,575 INFO L276 IsEmpty]: Start isEmpty. Operand 3658 states and 12233 transitions. [2021-08-21 13:29:45,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:29:45,580 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:29:45,580 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:29:45,580 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable144 [2021-08-21 13:29:45,580 INFO L402 AbstractCegarLoop]: === Iteration 146 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:29:45,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:29:45,580 INFO L82 PathProgramCache]: Analyzing trace with hash 1197747914, now seen corresponding path program 146 times [2021-08-21 13:29:45,580 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:29:45,580 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [670051329] [2021-08-21 13:29:45,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:29:45,580 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:29:45,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:29:45,789 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:29:45,789 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:29:45,789 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [670051329] [2021-08-21 13:29:45,789 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [670051329] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:29:45,789 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:29:45,789 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 13:29:45,789 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [376308927] [2021-08-21 13:29:45,789 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 13:29:45,789 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:29:45,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 13:29:45,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-08-21 13:29:45,790 INFO L87 Difference]: Start difference. First operand 3658 states and 12233 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:29:47,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:29:47,053 INFO L93 Difference]: Finished difference Result 4345 states and 14359 transitions. [2021-08-21 13:29:47,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-08-21 13:29:47,053 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:29:47,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:29:47,062 INFO L225 Difference]: With dead ends: 4345 [2021-08-21 13:29:47,062 INFO L226 Difference]: Without dead ends: 4281 [2021-08-21 13:29:47,062 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 950 ImplicationChecksByTransitivity, 785.3ms TimeCoverageRelationStatistics Valid=333, Invalid=3449, Unknown=0, NotChecked=0, Total=3782 [2021-08-21 13:29:47,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4281 states. [2021-08-21 13:29:47,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4281 to 3640. [2021-08-21 13:29:47,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3640 states, 3639 states have (on average 3.3498213794998626) internal successors, (12190), 3639 states have internal predecessors, (12190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:29:47,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3640 states to 3640 states and 12190 transitions. [2021-08-21 13:29:47,113 INFO L78 Accepts]: Start accepts. Automaton has 3640 states and 12190 transitions. Word has length 39 [2021-08-21 13:29:47,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:29:47,113 INFO L470 AbstractCegarLoop]: Abstraction has 3640 states and 12190 transitions. [2021-08-21 13:29:47,114 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:29:47,114 INFO L276 IsEmpty]: Start isEmpty. Operand 3640 states and 12190 transitions. [2021-08-21 13:29:47,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:29:47,118 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:29:47,118 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:29:47,118 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable145 [2021-08-21 13:29:47,118 INFO L402 AbstractCegarLoop]: === Iteration 147 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:29:47,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:29:47,119 INFO L82 PathProgramCache]: Analyzing trace with hash 1818182314, now seen corresponding path program 147 times [2021-08-21 13:29:47,119 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:29:47,119 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [227778323] [2021-08-21 13:29:47,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:29:47,119 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:29:47,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:29:47,317 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:29:47,317 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:29:47,317 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [227778323] [2021-08-21 13:29:47,318 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [227778323] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:29:47,318 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:29:47,318 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 13:29:47,318 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890131439] [2021-08-21 13:29:47,318 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 13:29:47,318 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:29:47,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 13:29:47,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-08-21 13:29:47,318 INFO L87 Difference]: Start difference. First operand 3640 states and 12190 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:29:48,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:29:48,252 INFO L93 Difference]: Finished difference Result 4245 states and 14072 transitions. [2021-08-21 13:29:48,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-08-21 13:29:48,252 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:29:48,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:29:48,260 INFO L225 Difference]: With dead ends: 4245 [2021-08-21 13:29:48,260 INFO L226 Difference]: Without dead ends: 4178 [2021-08-21 13:29:48,261 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 541 ImplicationChecksByTransitivity, 553.4ms TimeCoverageRelationStatistics Valid=247, Invalid=2303, Unknown=0, NotChecked=0, Total=2550 [2021-08-21 13:29:48,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4178 states. [2021-08-21 13:29:48,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4178 to 3648. [2021-08-21 13:29:48,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3648 states, 3647 states have (on average 3.346860433232794) internal successors, (12206), 3647 states have internal predecessors, (12206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:29:48,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3648 states to 3648 states and 12206 transitions. [2021-08-21 13:29:48,313 INFO L78 Accepts]: Start accepts. Automaton has 3648 states and 12206 transitions. Word has length 39 [2021-08-21 13:29:48,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:29:48,313 INFO L470 AbstractCegarLoop]: Abstraction has 3648 states and 12206 transitions. [2021-08-21 13:29:48,313 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:29:48,313 INFO L276 IsEmpty]: Start isEmpty. Operand 3648 states and 12206 transitions. [2021-08-21 13:29:48,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:29:48,318 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:29:48,318 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:29:48,318 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable146 [2021-08-21 13:29:48,318 INFO L402 AbstractCegarLoop]: === Iteration 148 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:29:48,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:29:48,318 INFO L82 PathProgramCache]: Analyzing trace with hash 1687587466, now seen corresponding path program 148 times [2021-08-21 13:29:48,318 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:29:48,318 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [643377972] [2021-08-21 13:29:48,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:29:48,318 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:29:48,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:29:48,518 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:29:48,518 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:29:48,518 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [643377972] [2021-08-21 13:29:48,518 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [643377972] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:29:48,518 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:29:48,518 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 13:29:48,518 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563283443] [2021-08-21 13:29:48,518 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 13:29:48,519 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:29:48,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 13:29:48,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-08-21 13:29:48,519 INFO L87 Difference]: Start difference. First operand 3648 states and 12206 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:29:49,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:29:49,459 INFO L93 Difference]: Finished difference Result 4233 states and 14032 transitions. [2021-08-21 13:29:49,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-08-21 13:29:49,459 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:29:49,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:29:49,468 INFO L225 Difference]: With dead ends: 4233 [2021-08-21 13:29:49,468 INFO L226 Difference]: Without dead ends: 4170 [2021-08-21 13:29:49,469 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 575 ImplicationChecksByTransitivity, 574.5ms TimeCoverageRelationStatistics Valid=254, Invalid=2398, Unknown=0, NotChecked=0, Total=2652 [2021-08-21 13:29:49,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4170 states. [2021-08-21 13:29:49,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4170 to 3640. [2021-08-21 13:29:49,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3640 states, 3639 states have (on average 3.348722176422094) internal successors, (12186), 3639 states have internal predecessors, (12186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:29:49,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3640 states to 3640 states and 12186 transitions. [2021-08-21 13:29:49,571 INFO L78 Accepts]: Start accepts. Automaton has 3640 states and 12186 transitions. Word has length 39 [2021-08-21 13:29:49,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:29:49,571 INFO L470 AbstractCegarLoop]: Abstraction has 3640 states and 12186 transitions. [2021-08-21 13:29:49,572 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:29:49,572 INFO L276 IsEmpty]: Start isEmpty. Operand 3640 states and 12186 transitions. [2021-08-21 13:29:49,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:29:49,577 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:29:49,577 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:29:49,577 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable147 [2021-08-21 13:29:49,577 INFO L402 AbstractCegarLoop]: === Iteration 149 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:29:49,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:29:49,578 INFO L82 PathProgramCache]: Analyzing trace with hash 1551908874, now seen corresponding path program 149 times [2021-08-21 13:29:49,578 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:29:49,578 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1840914844] [2021-08-21 13:29:49,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:29:49,578 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:29:49,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:29:49,778 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:29:49,778 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:29:49,778 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1840914844] [2021-08-21 13:29:49,778 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1840914844] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:29:49,778 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:29:49,778 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 13:29:49,778 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79819204] [2021-08-21 13:29:49,778 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 13:29:49,778 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:29:49,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 13:29:49,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-08-21 13:29:49,779 INFO L87 Difference]: Start difference. First operand 3640 states and 12186 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:29:51,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:29:51,060 INFO L93 Difference]: Finished difference Result 4396 states and 14421 transitions. [2021-08-21 13:29:51,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2021-08-21 13:29:51,061 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:29:51,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:29:51,070 INFO L225 Difference]: With dead ends: 4396 [2021-08-21 13:29:51,070 INFO L226 Difference]: Without dead ends: 4353 [2021-08-21 13:29:51,071 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 954 ImplicationChecksByTransitivity, 838.8ms TimeCoverageRelationStatistics Valid=333, Invalid=3449, Unknown=0, NotChecked=0, Total=3782 [2021-08-21 13:29:51,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4353 states. [2021-08-21 13:29:51,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4353 to 3648. [2021-08-21 13:29:51,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3648 states, 3647 states have (on average 3.346860433232794) internal successors, (12206), 3647 states have internal predecessors, (12206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:29:51,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3648 states to 3648 states and 12206 transitions. [2021-08-21 13:29:51,132 INFO L78 Accepts]: Start accepts. Automaton has 3648 states and 12206 transitions. Word has length 39 [2021-08-21 13:29:51,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:29:51,132 INFO L470 AbstractCegarLoop]: Abstraction has 3648 states and 12206 transitions. [2021-08-21 13:29:51,132 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:29:51,132 INFO L276 IsEmpty]: Start isEmpty. Operand 3648 states and 12206 transitions. [2021-08-21 13:29:51,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:29:51,138 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:29:51,138 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:29:51,138 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable148 [2021-08-21 13:29:51,138 INFO L402 AbstractCegarLoop]: === Iteration 150 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:29:51,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:29:51,138 INFO L82 PathProgramCache]: Analyzing trace with hash -228689428, now seen corresponding path program 150 times [2021-08-21 13:29:51,138 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:29:51,138 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1599494096] [2021-08-21 13:29:51,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:29:51,138 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:29:51,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:29:51,403 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:29:51,404 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:29:51,404 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1599494096] [2021-08-21 13:29:51,404 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1599494096] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:29:51,404 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:29:51,404 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 13:29:51,404 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1558168405] [2021-08-21 13:29:51,404 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 13:29:51,404 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:29:51,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 13:29:51,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-08-21 13:29:51,404 INFO L87 Difference]: Start difference. First operand 3648 states and 12206 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:29:52,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:29:52,967 INFO L93 Difference]: Finished difference Result 4384 states and 14383 transitions. [2021-08-21 13:29:52,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-08-21 13:29:52,967 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:29:52,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:29:52,976 INFO L225 Difference]: With dead ends: 4384 [2021-08-21 13:29:52,976 INFO L226 Difference]: Without dead ends: 4332 [2021-08-21 13:29:52,977 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 910 ImplicationChecksByTransitivity, 993.6ms TimeCoverageRelationStatistics Valid=325, Invalid=3335, Unknown=0, NotChecked=0, Total=3660 [2021-08-21 13:29:52,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4332 states. [2021-08-21 13:29:53,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4332 to 3640. [2021-08-21 13:29:53,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3640 states, 3639 states have (on average 3.348722176422094) internal successors, (12186), 3639 states have internal predecessors, (12186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:29:53,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3640 states to 3640 states and 12186 transitions. [2021-08-21 13:29:53,037 INFO L78 Accepts]: Start accepts. Automaton has 3640 states and 12186 transitions. Word has length 39 [2021-08-21 13:29:53,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:29:53,037 INFO L470 AbstractCegarLoop]: Abstraction has 3640 states and 12186 transitions. [2021-08-21 13:29:53,037 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:29:53,037 INFO L276 IsEmpty]: Start isEmpty. Operand 3640 states and 12186 transitions. [2021-08-21 13:29:53,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:29:53,043 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:29:53,043 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:29:53,043 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable149 [2021-08-21 13:29:53,043 INFO L402 AbstractCegarLoop]: === Iteration 151 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:29:53,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:29:53,044 INFO L82 PathProgramCache]: Analyzing trace with hash -1824574852, now seen corresponding path program 151 times [2021-08-21 13:29:53,044 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:29:53,044 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1409220729] [2021-08-21 13:29:53,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:29:53,044 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:29:53,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:29:53,296 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:29:53,297 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:29:53,297 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1409220729] [2021-08-21 13:29:53,297 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1409220729] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:29:53,297 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:29:53,297 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 13:29:53,297 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2122026862] [2021-08-21 13:29:53,297 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 13:29:53,297 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:29:53,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 13:29:53,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-08-21 13:29:53,297 INFO L87 Difference]: Start difference. First operand 3640 states and 12186 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:29:54,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:29:54,640 INFO L93 Difference]: Finished difference Result 4361 states and 14306 transitions. [2021-08-21 13:29:54,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-08-21 13:29:54,641 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:29:54,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:29:54,649 INFO L225 Difference]: With dead ends: 4361 [2021-08-21 13:29:54,649 INFO L226 Difference]: Without dead ends: 4306 [2021-08-21 13:29:54,650 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 644 ImplicationChecksByTransitivity, 849.9ms TimeCoverageRelationStatistics Valid=271, Invalid=2591, Unknown=0, NotChecked=0, Total=2862 [2021-08-21 13:29:54,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4306 states. [2021-08-21 13:29:54,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4306 to 3642. [2021-08-21 13:29:54,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3642 states, 3641 states have (on average 3.347706673990662) internal successors, (12189), 3641 states have internal predecessors, (12189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:29:54,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3642 states to 3642 states and 12189 transitions. [2021-08-21 13:29:54,706 INFO L78 Accepts]: Start accepts. Automaton has 3642 states and 12189 transitions. Word has length 39 [2021-08-21 13:29:54,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:29:54,706 INFO L470 AbstractCegarLoop]: Abstraction has 3642 states and 12189 transitions. [2021-08-21 13:29:54,706 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:29:54,706 INFO L276 IsEmpty]: Start isEmpty. Operand 3642 states and 12189 transitions. [2021-08-21 13:29:54,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:29:54,713 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:29:54,713 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:29:54,713 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable150 [2021-08-21 13:29:54,713 INFO L402 AbstractCegarLoop]: === Iteration 152 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:29:54,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:29:54,713 INFO L82 PathProgramCache]: Analyzing trace with hash -651922630, now seen corresponding path program 152 times [2021-08-21 13:29:54,713 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:29:54,713 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [874478559] [2021-08-21 13:29:54,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:29:54,714 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:29:54,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:29:55,040 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:29:55,040 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:29:55,040 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [874478559] [2021-08-21 13:29:55,040 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [874478559] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:29:55,040 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:29:55,041 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 13:29:55,041 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503392911] [2021-08-21 13:29:55,041 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 13:29:55,041 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:29:55,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 13:29:55,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-08-21 13:29:55,041 INFO L87 Difference]: Start difference. First operand 3642 states and 12189 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:29:56,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:29:56,335 INFO L93 Difference]: Finished difference Result 4296 states and 14154 transitions. [2021-08-21 13:29:56,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-08-21 13:29:56,335 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:29:56,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:29:56,344 INFO L225 Difference]: With dead ends: 4296 [2021-08-21 13:29:56,344 INFO L226 Difference]: Without dead ends: 4250 [2021-08-21 13:29:56,345 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 538 ImplicationChecksByTransitivity, 829.1ms TimeCoverageRelationStatistics Valid=246, Invalid=2304, Unknown=0, NotChecked=0, Total=2550 [2021-08-21 13:29:56,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4250 states. [2021-08-21 13:29:56,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4250 to 3646. [2021-08-21 13:29:56,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3646 states, 3645 states have (on average 3.3462277091906723) internal successors, (12197), 3645 states have internal predecessors, (12197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:29:56,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3646 states to 3646 states and 12197 transitions. [2021-08-21 13:29:56,401 INFO L78 Accepts]: Start accepts. Automaton has 3646 states and 12197 transitions. Word has length 39 [2021-08-21 13:29:56,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:29:56,401 INFO L470 AbstractCegarLoop]: Abstraction has 3646 states and 12197 transitions. [2021-08-21 13:29:56,401 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:29:56,401 INFO L276 IsEmpty]: Start isEmpty. Operand 3646 states and 12197 transitions. [2021-08-21 13:29:56,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:29:56,406 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:29:56,406 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:29:56,406 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable151 [2021-08-21 13:29:56,406 INFO L402 AbstractCegarLoop]: === Iteration 153 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:29:56,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:29:56,406 INFO L82 PathProgramCache]: Analyzing trace with hash -899388792, now seen corresponding path program 153 times [2021-08-21 13:29:56,406 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:29:56,406 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1890000530] [2021-08-21 13:29:56,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:29:56,406 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:29:56,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:29:56,657 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:29:56,658 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:29:56,658 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1890000530] [2021-08-21 13:29:56,658 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1890000530] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:29:56,658 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:29:56,658 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 13:29:56,658 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374391167] [2021-08-21 13:29:56,658 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 13:29:56,658 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:29:56,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 13:29:56,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-08-21 13:29:56,658 INFO L87 Difference]: Start difference. First operand 3646 states and 12197 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:29:57,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:29:57,980 INFO L93 Difference]: Finished difference Result 4256 states and 14065 transitions. [2021-08-21 13:29:57,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-08-21 13:29:57,980 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:29:57,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:29:57,989 INFO L225 Difference]: With dead ends: 4256 [2021-08-21 13:29:57,989 INFO L226 Difference]: Without dead ends: 4207 [2021-08-21 13:29:57,989 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 538 ImplicationChecksByTransitivity, 837.4ms TimeCoverageRelationStatistics Valid=250, Invalid=2300, Unknown=0, NotChecked=0, Total=2550 [2021-08-21 13:29:57,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4207 states. [2021-08-21 13:29:58,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4207 to 3636. [2021-08-21 13:29:58,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3636 states, 3635 states have (on average 3.3485557083906463) internal successors, (12172), 3635 states have internal predecessors, (12172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:29:58,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3636 states to 3636 states and 12172 transitions. [2021-08-21 13:29:58,042 INFO L78 Accepts]: Start accepts. Automaton has 3636 states and 12172 transitions. Word has length 39 [2021-08-21 13:29:58,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:29:58,042 INFO L470 AbstractCegarLoop]: Abstraction has 3636 states and 12172 transitions. [2021-08-21 13:29:58,042 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:29:58,042 INFO L276 IsEmpty]: Start isEmpty. Operand 3636 states and 12172 transitions. [2021-08-21 13:29:58,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:29:58,047 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:29:58,047 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:29:58,047 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable152 [2021-08-21 13:29:58,047 INFO L402 AbstractCegarLoop]: === Iteration 154 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:29:58,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:29:58,047 INFO L82 PathProgramCache]: Analyzing trace with hash 639486730, now seen corresponding path program 154 times [2021-08-21 13:29:58,047 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:29:58,047 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1889344335] [2021-08-21 13:29:58,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:29:58,047 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:29:58,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:29:58,308 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:29:58,309 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:29:58,309 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1889344335] [2021-08-21 13:29:58,309 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1889344335] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:29:58,309 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:29:58,309 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 13:29:58,309 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1532705071] [2021-08-21 13:29:58,309 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 13:29:58,309 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:29:58,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 13:29:58,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-08-21 13:29:58,309 INFO L87 Difference]: Start difference. First operand 3636 states and 12172 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:29:59,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:29:59,450 INFO L93 Difference]: Finished difference Result 4279 states and 14191 transitions. [2021-08-21 13:29:59,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-08-21 13:29:59,450 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:29:59,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:29:59,458 INFO L225 Difference]: With dead ends: 4279 [2021-08-21 13:29:59,458 INFO L226 Difference]: Without dead ends: 4212 [2021-08-21 13:29:59,459 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 417 ImplicationChecksByTransitivity, 653.8ms TimeCoverageRelationStatistics Valid=209, Invalid=1953, Unknown=0, NotChecked=0, Total=2162 [2021-08-21 13:29:59,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4212 states. [2021-08-21 13:29:59,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4212 to 3676. [2021-08-21 13:29:59,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3676 states, 3675 states have (on average 3.3414965986394556) internal successors, (12280), 3675 states have internal predecessors, (12280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:29:59,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3676 states to 3676 states and 12280 transitions. [2021-08-21 13:29:59,509 INFO L78 Accepts]: Start accepts. Automaton has 3676 states and 12280 transitions. Word has length 39 [2021-08-21 13:29:59,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:29:59,509 INFO L470 AbstractCegarLoop]: Abstraction has 3676 states and 12280 transitions. [2021-08-21 13:29:59,509 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:29:59,509 INFO L276 IsEmpty]: Start isEmpty. Operand 3676 states and 12280 transitions. [2021-08-21 13:29:59,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:29:59,513 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:29:59,513 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:29:59,513 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable153 [2021-08-21 13:29:59,514 INFO L402 AbstractCegarLoop]: === Iteration 155 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:29:59,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:29:59,514 INFO L82 PathProgramCache]: Analyzing trace with hash 508891882, now seen corresponding path program 155 times [2021-08-21 13:29:59,514 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:29:59,514 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [271782865] [2021-08-21 13:29:59,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:29:59,514 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:29:59,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:29:59,844 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:29:59,844 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:29:59,844 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [271782865] [2021-08-21 13:29:59,844 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [271782865] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:29:59,844 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:29:59,844 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 13:29:59,844 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452878034] [2021-08-21 13:29:59,844 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 13:29:59,845 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:29:59,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 13:29:59,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-08-21 13:29:59,845 INFO L87 Difference]: Start difference. First operand 3676 states and 12280 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:30:00,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:30:00,828 INFO L93 Difference]: Finished difference Result 4267 states and 14151 transitions. [2021-08-21 13:30:00,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-08-21 13:30:00,828 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:30:00,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:30:00,836 INFO L225 Difference]: With dead ends: 4267 [2021-08-21 13:30:00,837 INFO L226 Difference]: Without dead ends: 4204 [2021-08-21 13:30:00,837 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 416 ImplicationChecksByTransitivity, 644.9ms TimeCoverageRelationStatistics Valid=211, Invalid=1951, Unknown=0, NotChecked=0, Total=2162 [2021-08-21 13:30:00,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4204 states. [2021-08-21 13:30:00,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4204 to 3668. [2021-08-21 13:30:00,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3668 states, 3667 states have (on average 3.342241614398691) internal successors, (12256), 3667 states have internal predecessors, (12256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:30:00,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3668 states to 3668 states and 12256 transitions. [2021-08-21 13:30:00,889 INFO L78 Accepts]: Start accepts. Automaton has 3668 states and 12256 transitions. Word has length 39 [2021-08-21 13:30:00,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:30:00,889 INFO L470 AbstractCegarLoop]: Abstraction has 3668 states and 12256 transitions. [2021-08-21 13:30:00,889 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:30:00,889 INFO L276 IsEmpty]: Start isEmpty. Operand 3668 states and 12256 transitions. [2021-08-21 13:30:00,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:30:00,894 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:30:00,894 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:30:00,894 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable154 [2021-08-21 13:30:00,894 INFO L402 AbstractCegarLoop]: === Iteration 156 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:30:00,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:30:00,894 INFO L82 PathProgramCache]: Analyzing trace with hash -21008566, now seen corresponding path program 156 times [2021-08-21 13:30:00,894 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:30:00,894 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [959665226] [2021-08-21 13:30:00,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:30:00,894 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:30:00,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:30:01,122 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:30:01,123 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:30:01,123 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [959665226] [2021-08-21 13:30:01,123 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [959665226] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:30:01,123 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:30:01,123 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 13:30:01,123 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144777885] [2021-08-21 13:30:01,123 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 13:30:01,123 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:30:01,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 13:30:01,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-08-21 13:30:01,123 INFO L87 Difference]: Start difference. First operand 3668 states and 12256 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:30:02,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:30:02,124 INFO L93 Difference]: Finished difference Result 4279 states and 14179 transitions. [2021-08-21 13:30:02,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-08-21 13:30:02,125 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:30:02,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:30:02,133 INFO L225 Difference]: With dead ends: 4279 [2021-08-21 13:30:02,133 INFO L226 Difference]: Without dead ends: 4140 [2021-08-21 13:30:02,134 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 415 ImplicationChecksByTransitivity, 578.0ms TimeCoverageRelationStatistics Valid=207, Invalid=1955, Unknown=0, NotChecked=0, Total=2162 [2021-08-21 13:30:02,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4140 states. [2021-08-21 13:30:02,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4140 to 3616. [2021-08-21 13:30:02,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3616 states, 3615 states have (on average 3.34716459197787) internal successors, (12100), 3615 states have internal predecessors, (12100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:30:02,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3616 states to 3616 states and 12100 transitions. [2021-08-21 13:30:02,187 INFO L78 Accepts]: Start accepts. Automaton has 3616 states and 12100 transitions. Word has length 39 [2021-08-21 13:30:02,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:30:02,187 INFO L470 AbstractCegarLoop]: Abstraction has 3616 states and 12100 transitions. [2021-08-21 13:30:02,187 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:30:02,187 INFO L276 IsEmpty]: Start isEmpty. Operand 3616 states and 12100 transitions. [2021-08-21 13:30:02,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:30:02,192 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:30:02,192 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:30:02,192 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable155 [2021-08-21 13:30:02,192 INFO L402 AbstractCegarLoop]: === Iteration 157 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:30:02,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:30:02,192 INFO L82 PathProgramCache]: Analyzing trace with hash -1398936488, now seen corresponding path program 157 times [2021-08-21 13:30:02,193 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:30:02,193 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [657917423] [2021-08-21 13:30:02,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:30:02,193 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:30:02,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:30:02,505 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:30:02,505 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:30:02,505 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [657917423] [2021-08-21 13:30:02,505 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [657917423] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:30:02,505 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:30:02,505 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 13:30:02,505 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104446362] [2021-08-21 13:30:02,505 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 13:30:02,505 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:30:02,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 13:30:02,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-08-21 13:30:02,506 INFO L87 Difference]: Start difference. First operand 3616 states and 12100 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:30:03,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:30:03,663 INFO L93 Difference]: Finished difference Result 4091 states and 13567 transitions. [2021-08-21 13:30:03,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-08-21 13:30:03,663 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:30:03,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:30:03,671 INFO L225 Difference]: With dead ends: 4091 [2021-08-21 13:30:03,672 INFO L226 Difference]: Without dead ends: 4024 [2021-08-21 13:30:03,672 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 391 ImplicationChecksByTransitivity, 736.2ms TimeCoverageRelationStatistics Valid=202, Invalid=1868, Unknown=0, NotChecked=0, Total=2070 [2021-08-21 13:30:03,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4024 states. [2021-08-21 13:30:03,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4024 to 3668. [2021-08-21 13:30:03,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3668 states, 3667 states have (on average 3.3367875647668392) internal successors, (12236), 3667 states have internal predecessors, (12236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:30:03,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3668 states to 3668 states and 12236 transitions. [2021-08-21 13:30:03,723 INFO L78 Accepts]: Start accepts. Automaton has 3668 states and 12236 transitions. Word has length 39 [2021-08-21 13:30:03,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:30:03,723 INFO L470 AbstractCegarLoop]: Abstraction has 3668 states and 12236 transitions. [2021-08-21 13:30:03,723 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:30:03,723 INFO L276 IsEmpty]: Start isEmpty. Operand 3668 states and 12236 transitions. [2021-08-21 13:30:03,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:30:03,728 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:30:03,728 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:30:03,728 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable156 [2021-08-21 13:30:03,729 INFO L402 AbstractCegarLoop]: === Iteration 158 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:30:03,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:30:03,729 INFO L82 PathProgramCache]: Analyzing trace with hash -1571079706, now seen corresponding path program 158 times [2021-08-21 13:30:03,729 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:30:03,729 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [912206545] [2021-08-21 13:30:03,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:30:03,729 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:30:03,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:30:04,025 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:30:04,026 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:30:04,026 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [912206545] [2021-08-21 13:30:04,026 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [912206545] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:30:04,026 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:30:04,026 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 13:30:04,026 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1268277328] [2021-08-21 13:30:04,026 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 13:30:04,026 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:30:04,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 13:30:04,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-08-21 13:30:04,026 INFO L87 Difference]: Start difference. First operand 3668 states and 12236 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:30:05,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:30:05,134 INFO L93 Difference]: Finished difference Result 4079 states and 13527 transitions. [2021-08-21 13:30:05,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-08-21 13:30:05,134 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:30:05,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:30:05,142 INFO L225 Difference]: With dead ends: 4079 [2021-08-21 13:30:05,142 INFO L226 Difference]: Without dead ends: 4016 [2021-08-21 13:30:05,143 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 392 ImplicationChecksByTransitivity, 697.5ms TimeCoverageRelationStatistics Valid=200, Invalid=1870, Unknown=0, NotChecked=0, Total=2070 [2021-08-21 13:30:05,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4016 states. [2021-08-21 13:30:05,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4016 to 3660. [2021-08-21 13:30:05,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3660 states, 3659 states have (on average 3.337523913637606) internal successors, (12212), 3659 states have internal predecessors, (12212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:30:05,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3660 states to 3660 states and 12212 transitions. [2021-08-21 13:30:05,196 INFO L78 Accepts]: Start accepts. Automaton has 3660 states and 12212 transitions. Word has length 39 [2021-08-21 13:30:05,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:30:05,197 INFO L470 AbstractCegarLoop]: Abstraction has 3660 states and 12212 transitions. [2021-08-21 13:30:05,197 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:30:05,197 INFO L276 IsEmpty]: Start isEmpty. Operand 3660 states and 12212 transitions. [2021-08-21 13:30:05,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:30:05,202 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:30:05,202 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:30:05,202 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable157 [2021-08-21 13:30:05,202 INFO L402 AbstractCegarLoop]: === Iteration 159 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:30:05,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:30:05,203 INFO L82 PathProgramCache]: Analyzing trace with hash 921053434, now seen corresponding path program 159 times [2021-08-21 13:30:05,203 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:30:05,203 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [700679831] [2021-08-21 13:30:05,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:30:05,203 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:30:05,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:30:05,504 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:30:05,504 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:30:05,504 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [700679831] [2021-08-21 13:30:05,504 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [700679831] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:30:05,504 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:30:05,504 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 13:30:05,504 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [241409453] [2021-08-21 13:30:05,504 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 13:30:05,504 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:30:05,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 13:30:05,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-08-21 13:30:05,505 INFO L87 Difference]: Start difference. First operand 3660 states and 12212 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:30:06,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:30:06,624 INFO L93 Difference]: Finished difference Result 4079 states and 13519 transitions. [2021-08-21 13:30:06,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-08-21 13:30:06,624 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:30:06,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:30:06,632 INFO L225 Difference]: With dead ends: 4079 [2021-08-21 13:30:06,632 INFO L226 Difference]: Without dead ends: 3936 [2021-08-21 13:30:06,633 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 391 ImplicationChecksByTransitivity, 706.6ms TimeCoverageRelationStatistics Valid=197, Invalid=1873, Unknown=0, NotChecked=0, Total=2070 [2021-08-21 13:30:06,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3936 states. [2021-08-21 13:30:06,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3936 to 3608. [2021-08-21 13:30:06,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3608 states, 3607 states have (on average 3.349043526476296) internal successors, (12080), 3607 states have internal predecessors, (12080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:30:06,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3608 states to 3608 states and 12080 transitions. [2021-08-21 13:30:06,683 INFO L78 Accepts]: Start accepts. Automaton has 3608 states and 12080 transitions. Word has length 39 [2021-08-21 13:30:06,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:30:06,683 INFO L470 AbstractCegarLoop]: Abstraction has 3608 states and 12080 transitions. [2021-08-21 13:30:06,683 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:30:06,683 INFO L276 IsEmpty]: Start isEmpty. Operand 3608 states and 12080 transitions. [2021-08-21 13:30:06,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:30:06,688 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:30:06,688 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:30:06,688 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable158 [2021-08-21 13:30:06,688 INFO L402 AbstractCegarLoop]: === Iteration 160 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:30:06,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:30:06,688 INFO L82 PathProgramCache]: Analyzing trace with hash 1947592984, now seen corresponding path program 160 times [2021-08-21 13:30:06,688 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:30:06,689 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2086717934] [2021-08-21 13:30:06,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:30:06,689 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:30:06,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:30:06,931 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:30:06,931 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:30:06,931 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2086717934] [2021-08-21 13:30:06,931 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2086717934] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:30:06,931 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:30:06,931 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-08-21 13:30:06,931 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [489703227] [2021-08-21 13:30:06,931 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-08-21 13:30:06,931 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:30:06,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-08-21 13:30:06,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2021-08-21 13:30:06,932 INFO L87 Difference]: Start difference. First operand 3608 states and 12080 transitions. Second operand has 15 states, 15 states have (on average 2.6) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:30:08,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:30:08,004 INFO L93 Difference]: Finished difference Result 4099 states and 13671 transitions. [2021-08-21 13:30:08,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-08-21 13:30:08,004 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.6) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:30:08,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:30:08,012 INFO L225 Difference]: With dead ends: 4099 [2021-08-21 13:30:08,012 INFO L226 Difference]: Without dead ends: 4032 [2021-08-21 13:30:08,012 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 424 ImplicationChecksByTransitivity, 650.3ms TimeCoverageRelationStatistics Valid=203, Invalid=1777, Unknown=0, NotChecked=0, Total=1980 [2021-08-21 13:30:08,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4032 states. [2021-08-21 13:30:08,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4032 to 3700. [2021-08-21 13:30:08,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3700 states, 3699 states have (on average 3.346850500135172) internal successors, (12380), 3699 states have internal predecessors, (12380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:30:08,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3700 states to 3700 states and 12380 transitions. [2021-08-21 13:30:08,067 INFO L78 Accepts]: Start accepts. Automaton has 3700 states and 12380 transitions. Word has length 39 [2021-08-21 13:30:08,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:30:08,067 INFO L470 AbstractCegarLoop]: Abstraction has 3700 states and 12380 transitions. [2021-08-21 13:30:08,067 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.6) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:30:08,067 INFO L276 IsEmpty]: Start isEmpty. Operand 3700 states and 12380 transitions. [2021-08-21 13:30:08,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:30:08,072 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:30:08,072 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:30:08,073 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable159 [2021-08-21 13:30:08,073 INFO L402 AbstractCegarLoop]: === Iteration 161 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:30:08,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:30:08,073 INFO L82 PathProgramCache]: Analyzing trace with hash 227977014, now seen corresponding path program 161 times [2021-08-21 13:30:08,073 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:30:08,073 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [540711544] [2021-08-21 13:30:08,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:30:08,073 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:30:08,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:30:08,246 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:30:08,246 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:30:08,247 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [540711544] [2021-08-21 13:30:08,247 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [540711544] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:30:08,247 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:30:08,247 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-08-21 13:30:08,247 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841356646] [2021-08-21 13:30:08,247 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-08-21 13:30:08,247 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:30:08,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-08-21 13:30:08,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2021-08-21 13:30:08,247 INFO L87 Difference]: Start difference. First operand 3700 states and 12380 transitions. Second operand has 15 states, 15 states have (on average 2.6) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:30:09,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:30:09,584 INFO L93 Difference]: Finished difference Result 4203 states and 13962 transitions. [2021-08-21 13:30:09,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-08-21 13:30:09,584 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.6) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:30:09,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:30:09,592 INFO L225 Difference]: With dead ends: 4203 [2021-08-21 13:30:09,592 INFO L226 Difference]: Without dead ends: 4160 [2021-08-21 13:30:09,593 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 792 ImplicationChecksByTransitivity, 840.9ms TimeCoverageRelationStatistics Valid=291, Invalid=2789, Unknown=0, NotChecked=0, Total=3080 [2021-08-21 13:30:09,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4160 states. [2021-08-21 13:30:09,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4160 to 3706. [2021-08-21 13:30:09,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3706 states, 3705 states have (on average 3.3449392712550607) internal successors, (12393), 3705 states have internal predecessors, (12393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:30:09,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3706 states to 3706 states and 12393 transitions. [2021-08-21 13:30:09,646 INFO L78 Accepts]: Start accepts. Automaton has 3706 states and 12393 transitions. Word has length 39 [2021-08-21 13:30:09,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:30:09,646 INFO L470 AbstractCegarLoop]: Abstraction has 3706 states and 12393 transitions. [2021-08-21 13:30:09,646 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.6) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:30:09,646 INFO L276 IsEmpty]: Start isEmpty. Operand 3706 states and 12393 transitions. [2021-08-21 13:30:09,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:30:09,651 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:30:09,651 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:30:09,651 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable160 [2021-08-21 13:30:09,651 INFO L402 AbstractCegarLoop]: === Iteration 162 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:30:09,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:30:09,651 INFO L82 PathProgramCache]: Analyzing trace with hash -1552621288, now seen corresponding path program 162 times [2021-08-21 13:30:09,651 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:30:09,651 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [246890863] [2021-08-21 13:30:09,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:30:09,651 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:30:09,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:30:09,936 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:30:09,937 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:30:09,937 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [246890863] [2021-08-21 13:30:09,937 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [246890863] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:30:09,937 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:30:09,937 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-08-21 13:30:09,937 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771076152] [2021-08-21 13:30:09,937 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-08-21 13:30:09,937 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:30:09,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-08-21 13:30:09,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2021-08-21 13:30:09,937 INFO L87 Difference]: Start difference. First operand 3706 states and 12393 transitions. Second operand has 15 states, 15 states have (on average 2.6) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:30:11,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:30:11,488 INFO L93 Difference]: Finished difference Result 4134 states and 13782 transitions. [2021-08-21 13:30:11,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2021-08-21 13:30:11,489 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.6) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:30:11,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:30:11,497 INFO L225 Difference]: With dead ends: 4134 [2021-08-21 13:30:11,497 INFO L226 Difference]: Without dead ends: 4070 [2021-08-21 13:30:11,497 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 751 ImplicationChecksByTransitivity, 1003.8ms TimeCoverageRelationStatistics Valid=284, Invalid=2686, Unknown=0, NotChecked=0, Total=2970 [2021-08-21 13:30:11,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4070 states. [2021-08-21 13:30:11,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4070 to 3688. [2021-08-21 13:30:11,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3688 states, 3687 states have (on average 3.3474369406021154) internal successors, (12342), 3687 states have internal predecessors, (12342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:30:11,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3688 states to 3688 states and 12342 transitions. [2021-08-21 13:30:11,548 INFO L78 Accepts]: Start accepts. Automaton has 3688 states and 12342 transitions. Word has length 39 [2021-08-21 13:30:11,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:30:11,548 INFO L470 AbstractCegarLoop]: Abstraction has 3688 states and 12342 transitions. [2021-08-21 13:30:11,548 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.6) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:30:11,548 INFO L276 IsEmpty]: Start isEmpty. Operand 3688 states and 12342 transitions. [2021-08-21 13:30:11,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:30:11,553 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:30:11,553 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:30:11,553 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable161 [2021-08-21 13:30:11,553 INFO L402 AbstractCegarLoop]: === Iteration 163 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:30:11,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:30:11,553 INFO L82 PathProgramCache]: Analyzing trace with hash -1961436904, now seen corresponding path program 163 times [2021-08-21 13:30:11,553 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:30:11,553 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [994106137] [2021-08-21 13:30:11,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:30:11,554 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:30:11,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:30:11,778 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:30:11,778 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:30:11,778 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [994106137] [2021-08-21 13:30:11,778 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [994106137] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:30:11,778 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:30:11,778 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-08-21 13:30:11,778 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445697191] [2021-08-21 13:30:11,778 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-08-21 13:30:11,778 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:30:11,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-08-21 13:30:11,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2021-08-21 13:30:11,779 INFO L87 Difference]: Start difference. First operand 3688 states and 12342 transitions. Second operand has 15 states, 15 states have (on average 2.6) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:30:13,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:30:13,238 INFO L93 Difference]: Finished difference Result 4145 states and 13790 transitions. [2021-08-21 13:30:13,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-08-21 13:30:13,238 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.6) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:30:13,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:30:13,246 INFO L225 Difference]: With dead ends: 4145 [2021-08-21 13:30:13,246 INFO L226 Difference]: Without dead ends: 4015 [2021-08-21 13:30:13,247 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 639 ImplicationChecksByTransitivity, 867.4ms TimeCoverageRelationStatistics Valid=255, Invalid=2397, Unknown=0, NotChecked=0, Total=2652 [2021-08-21 13:30:13,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4015 states. [2021-08-21 13:30:13,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4015 to 3664. [2021-08-21 13:30:13,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3664 states, 3663 states have (on average 3.3497133497133498) internal successors, (12270), 3663 states have internal predecessors, (12270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:30:13,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3664 states to 3664 states and 12270 transitions. [2021-08-21 13:30:13,298 INFO L78 Accepts]: Start accepts. Automaton has 3664 states and 12270 transitions. Word has length 39 [2021-08-21 13:30:13,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:30:13,298 INFO L470 AbstractCegarLoop]: Abstraction has 3664 states and 12270 transitions. [2021-08-21 13:30:13,298 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.6) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:30:13,298 INFO L276 IsEmpty]: Start isEmpty. Operand 3664 states and 12270 transitions. [2021-08-21 13:30:13,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:30:13,303 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:30:13,303 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:30:13,304 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable162 [2021-08-21 13:30:13,304 INFO L402 AbstractCegarLoop]: === Iteration 164 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:30:13,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:30:13,304 INFO L82 PathProgramCache]: Analyzing trace with hash -123485052, now seen corresponding path program 164 times [2021-08-21 13:30:13,304 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:30:13,304 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [621758341] [2021-08-21 13:30:13,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:30:13,304 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:30:13,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:30:13,660 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:30:13,660 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:30:13,660 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [621758341] [2021-08-21 13:30:13,661 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [621758341] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:30:13,661 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:30:13,661 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-08-21 13:30:13,661 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518379597] [2021-08-21 13:30:13,661 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-08-21 13:30:13,661 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:30:13,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-08-21 13:30:13,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-08-21 13:30:13,661 INFO L87 Difference]: Start difference. First operand 3664 states and 12270 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:30:15,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:30:15,024 INFO L93 Difference]: Finished difference Result 4129 states and 13740 transitions. [2021-08-21 13:30:15,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-08-21 13:30:15,025 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:30:15,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:30:15,034 INFO L225 Difference]: With dead ends: 4129 [2021-08-21 13:30:15,034 INFO L226 Difference]: Without dead ends: 4062 [2021-08-21 13:30:15,034 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 609 ImplicationChecksByTransitivity, 891.9ms TimeCoverageRelationStatistics Valid=258, Invalid=2394, Unknown=0, NotChecked=0, Total=2652 [2021-08-21 13:30:15,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4062 states. [2021-08-21 13:30:15,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4062 to 3680. [2021-08-21 13:30:15,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3680 states, 3679 states have (on average 3.3460179396575156) internal successors, (12310), 3679 states have internal predecessors, (12310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:30:15,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3680 states to 3680 states and 12310 transitions. [2021-08-21 13:30:15,091 INFO L78 Accepts]: Start accepts. Automaton has 3680 states and 12310 transitions. Word has length 39 [2021-08-21 13:30:15,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:30:15,092 INFO L470 AbstractCegarLoop]: Abstraction has 3680 states and 12310 transitions. [2021-08-21 13:30:15,092 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:30:15,092 INFO L276 IsEmpty]: Start isEmpty. Operand 3680 states and 12310 transitions. [2021-08-21 13:30:15,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:30:15,097 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:30:15,097 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:30:15,097 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable163 [2021-08-21 13:30:15,097 INFO L402 AbstractCegarLoop]: === Iteration 165 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:30:15,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:30:15,097 INFO L82 PathProgramCache]: Analyzing trace with hash -1843101022, now seen corresponding path program 165 times [2021-08-21 13:30:15,097 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:30:15,097 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [493109830] [2021-08-21 13:30:15,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:30:15,098 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:30:15,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:30:15,378 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:30:15,378 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:30:15,379 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [493109830] [2021-08-21 13:30:15,379 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [493109830] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:30:15,379 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:30:15,379 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-08-21 13:30:15,379 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598456339] [2021-08-21 13:30:15,379 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-08-21 13:30:15,379 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:30:15,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-08-21 13:30:15,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-08-21 13:30:15,379 INFO L87 Difference]: Start difference. First operand 3680 states and 12310 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:30:17,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:30:17,220 INFO L93 Difference]: Finished difference Result 4266 states and 14097 transitions. [2021-08-21 13:30:17,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2021-08-21 13:30:17,221 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:30:17,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:30:17,229 INFO L225 Difference]: With dead ends: 4266 [2021-08-21 13:30:17,229 INFO L226 Difference]: Without dead ends: 4223 [2021-08-21 13:30:17,229 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1041 ImplicationChecksByTransitivity, 1181.7ms TimeCoverageRelationStatistics Valid=352, Invalid=3554, Unknown=0, NotChecked=0, Total=3906 [2021-08-21 13:30:17,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4223 states. [2021-08-21 13:30:17,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4223 to 3686. [2021-08-21 13:30:17,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3686 states, 3685 states have (on average 3.344097693351425) internal successors, (12323), 3685 states have internal predecessors, (12323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:30:17,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3686 states to 3686 states and 12323 transitions. [2021-08-21 13:30:17,280 INFO L78 Accepts]: Start accepts. Automaton has 3686 states and 12323 transitions. Word has length 39 [2021-08-21 13:30:17,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:30:17,280 INFO L470 AbstractCegarLoop]: Abstraction has 3686 states and 12323 transitions. [2021-08-21 13:30:17,280 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:30:17,280 INFO L276 IsEmpty]: Start isEmpty. Operand 3686 states and 12323 transitions. [2021-08-21 13:30:17,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:30:17,285 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:30:17,285 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:30:17,285 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable164 [2021-08-21 13:30:17,285 INFO L402 AbstractCegarLoop]: === Iteration 166 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:30:17,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:30:17,285 INFO L82 PathProgramCache]: Analyzing trace with hash 671267972, now seen corresponding path program 166 times [2021-08-21 13:30:17,285 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:30:17,285 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [551094798] [2021-08-21 13:30:17,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:30:17,285 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:30:17,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:30:17,564 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:30:17,564 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:30:17,564 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [551094798] [2021-08-21 13:30:17,564 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [551094798] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:30:17,564 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:30:17,564 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-08-21 13:30:17,564 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [981432405] [2021-08-21 13:30:17,564 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-08-21 13:30:17,564 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:30:17,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-08-21 13:30:17,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-08-21 13:30:17,565 INFO L87 Difference]: Start difference. First operand 3686 states and 12323 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:30:19,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:30:19,186 INFO L93 Difference]: Finished difference Result 4197 states and 13917 transitions. [2021-08-21 13:30:19,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-08-21 13:30:19,187 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:30:19,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:30:19,195 INFO L225 Difference]: With dead ends: 4197 [2021-08-21 13:30:19,195 INFO L226 Difference]: Without dead ends: 4133 [2021-08-21 13:30:19,195 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 910 ImplicationChecksByTransitivity, 1077.6ms TimeCoverageRelationStatistics Valid=325, Invalid=3215, Unknown=0, NotChecked=0, Total=3540 [2021-08-21 13:30:19,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4133 states. [2021-08-21 13:30:19,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4133 to 3668. [2021-08-21 13:30:19,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3668 states, 3667 states have (on average 3.348786473956913) internal successors, (12280), 3667 states have internal predecessors, (12280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:30:19,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3668 states to 3668 states and 12280 transitions. [2021-08-21 13:30:19,248 INFO L78 Accepts]: Start accepts. Automaton has 3668 states and 12280 transitions. Word has length 39 [2021-08-21 13:30:19,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:30:19,248 INFO L470 AbstractCegarLoop]: Abstraction has 3668 states and 12280 transitions. [2021-08-21 13:30:19,249 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:30:19,249 INFO L276 IsEmpty]: Start isEmpty. Operand 3668 states and 12280 transitions. [2021-08-21 13:30:19,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:30:19,253 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:30:19,254 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:30:19,254 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable165 [2021-08-21 13:30:19,254 INFO L402 AbstractCegarLoop]: === Iteration 167 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:30:19,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:30:19,254 INFO L82 PathProgramCache]: Analyzing trace with hash 1291702372, now seen corresponding path program 167 times [2021-08-21 13:30:19,254 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:30:19,254 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2104263874] [2021-08-21 13:30:19,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:30:19,254 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:30:19,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:30:19,530 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:30:19,530 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:30:19,530 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2104263874] [2021-08-21 13:30:19,530 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2104263874] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:30:19,530 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:30:19,530 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-08-21 13:30:19,530 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723884619] [2021-08-21 13:30:19,530 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-08-21 13:30:19,530 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:30:19,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-08-21 13:30:19,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-08-21 13:30:19,531 INFO L87 Difference]: Start difference. First operand 3668 states and 12280 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:30:20,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:30:20,437 INFO L93 Difference]: Finished difference Result 4015 states and 13375 transitions. [2021-08-21 13:30:20,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-08-21 13:30:20,438 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:30:20,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:30:20,447 INFO L225 Difference]: With dead ends: 4015 [2021-08-21 13:30:20,447 INFO L226 Difference]: Without dead ends: 3948 [2021-08-21 13:30:20,448 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 418 ImplicationChecksByTransitivity, 600.0ms TimeCoverageRelationStatistics Valid=211, Invalid=1859, Unknown=0, NotChecked=0, Total=2070 [2021-08-21 13:30:20,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3948 states. [2021-08-21 13:30:20,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3948 to 3676. [2021-08-21 13:30:20,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3676 states, 3675 states have (on average 3.3458503401360544) internal successors, (12296), 3675 states have internal predecessors, (12296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:30:20,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3676 states to 3676 states and 12296 transitions. [2021-08-21 13:30:20,508 INFO L78 Accepts]: Start accepts. Automaton has 3676 states and 12296 transitions. Word has length 39 [2021-08-21 13:30:20,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:30:20,508 INFO L470 AbstractCegarLoop]: Abstraction has 3676 states and 12296 transitions. [2021-08-21 13:30:20,508 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:30:20,508 INFO L276 IsEmpty]: Start isEmpty. Operand 3676 states and 12296 transitions. [2021-08-21 13:30:20,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:30:20,514 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:30:20,514 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:30:20,514 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable166 [2021-08-21 13:30:20,514 INFO L402 AbstractCegarLoop]: === Iteration 168 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:30:20,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:30:20,514 INFO L82 PathProgramCache]: Analyzing trace with hash 1161107524, now seen corresponding path program 168 times [2021-08-21 13:30:20,514 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:30:20,514 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2018898021] [2021-08-21 13:30:20,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:30:20,514 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:30:20,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:30:20,742 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:30:20,743 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:30:20,743 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2018898021] [2021-08-21 13:30:20,743 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2018898021] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:30:20,743 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:30:20,743 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-08-21 13:30:20,743 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568758758] [2021-08-21 13:30:20,743 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-08-21 13:30:20,743 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:30:20,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-08-21 13:30:20,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-08-21 13:30:20,743 INFO L87 Difference]: Start difference. First operand 3676 states and 12296 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:30:21,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:30:21,761 INFO L93 Difference]: Finished difference Result 4003 states and 13335 transitions. [2021-08-21 13:30:21,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-08-21 13:30:21,761 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:30:21,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:30:21,769 INFO L225 Difference]: With dead ends: 4003 [2021-08-21 13:30:21,769 INFO L226 Difference]: Without dead ends: 3940 [2021-08-21 13:30:21,769 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 447 ImplicationChecksByTransitivity, 606.5ms TimeCoverageRelationStatistics Valid=217, Invalid=1945, Unknown=0, NotChecked=0, Total=2162 [2021-08-21 13:30:21,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3940 states. [2021-08-21 13:30:21,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3940 to 3668. [2021-08-21 13:30:21,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3668 states, 3667 states have (on average 3.347695664030543) internal successors, (12276), 3667 states have internal predecessors, (12276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:30:21,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3668 states to 3668 states and 12276 transitions. [2021-08-21 13:30:21,819 INFO L78 Accepts]: Start accepts. Automaton has 3668 states and 12276 transitions. Word has length 39 [2021-08-21 13:30:21,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:30:21,819 INFO L470 AbstractCegarLoop]: Abstraction has 3668 states and 12276 transitions. [2021-08-21 13:30:21,819 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:30:21,820 INFO L276 IsEmpty]: Start isEmpty. Operand 3668 states and 12276 transitions. [2021-08-21 13:30:21,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:30:21,824 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:30:21,824 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:30:21,824 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable167 [2021-08-21 13:30:21,825 INFO L402 AbstractCegarLoop]: === Iteration 169 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:30:21,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:30:21,825 INFO L82 PathProgramCache]: Analyzing trace with hash 1025428932, now seen corresponding path program 169 times [2021-08-21 13:30:21,825 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:30:21,825 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1456931378] [2021-08-21 13:30:21,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:30:21,825 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:30:21,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:30:22,009 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:30:22,009 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:30:22,009 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1456931378] [2021-08-21 13:30:22,009 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1456931378] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:30:22,010 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:30:22,010 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-08-21 13:30:22,010 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235731288] [2021-08-21 13:30:22,010 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-08-21 13:30:22,010 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:30:22,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-08-21 13:30:22,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-08-21 13:30:22,010 INFO L87 Difference]: Start difference. First operand 3668 states and 12276 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:30:23,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:30:23,176 INFO L93 Difference]: Finished difference Result 4137 states and 13670 transitions. [2021-08-21 13:30:23,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-08-21 13:30:23,176 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:30:23,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:30:23,183 INFO L225 Difference]: With dead ends: 4137 [2021-08-21 13:30:23,183 INFO L226 Difference]: Without dead ends: 4094 [2021-08-21 13:30:23,184 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 826 ImplicationChecksByTransitivity, 784.9ms TimeCoverageRelationStatistics Valid=314, Invalid=2992, Unknown=0, NotChecked=0, Total=3306 [2021-08-21 13:30:23,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4094 states. [2021-08-21 13:30:23,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4094 to 3676. [2021-08-21 13:30:23,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3676 states, 3675 states have (on average 3.3458503401360544) internal successors, (12296), 3675 states have internal predecessors, (12296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:30:23,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3676 states to 3676 states and 12296 transitions. [2021-08-21 13:30:23,231 INFO L78 Accepts]: Start accepts. Automaton has 3676 states and 12296 transitions. Word has length 39 [2021-08-21 13:30:23,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:30:23,231 INFO L470 AbstractCegarLoop]: Abstraction has 3676 states and 12296 transitions. [2021-08-21 13:30:23,231 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:30:23,231 INFO L276 IsEmpty]: Start isEmpty. Operand 3676 states and 12296 transitions. [2021-08-21 13:30:23,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:30:23,236 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:30:23,236 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:30:23,236 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable168 [2021-08-21 13:30:23,236 INFO L402 AbstractCegarLoop]: === Iteration 170 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:30:23,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:30:23,236 INFO L82 PathProgramCache]: Analyzing trace with hash -755169370, now seen corresponding path program 170 times [2021-08-21 13:30:23,236 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:30:23,236 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1700845953] [2021-08-21 13:30:23,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:30:23,237 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:30:23,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:30:23,446 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:30:23,447 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:30:23,447 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1700845953] [2021-08-21 13:30:23,447 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1700845953] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:30:23,447 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:30:23,447 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-08-21 13:30:23,447 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1031429688] [2021-08-21 13:30:23,447 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-08-21 13:30:23,447 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:30:23,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-08-21 13:30:23,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-08-21 13:30:23,448 INFO L87 Difference]: Start difference. First operand 3676 states and 12296 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:30:24,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:30:24,570 INFO L93 Difference]: Finished difference Result 4125 states and 13632 transitions. [2021-08-21 13:30:24,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-08-21 13:30:24,571 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:30:24,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:30:24,579 INFO L225 Difference]: With dead ends: 4125 [2021-08-21 13:30:24,579 INFO L226 Difference]: Without dead ends: 4073 [2021-08-21 13:30:24,580 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 786 ImplicationChecksByTransitivity, 750.7ms TimeCoverageRelationStatistics Valid=306, Invalid=2886, Unknown=0, NotChecked=0, Total=3192 [2021-08-21 13:30:24,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4073 states. [2021-08-21 13:30:24,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4073 to 3668. [2021-08-21 13:30:24,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3668 states, 3667 states have (on average 3.347695664030543) internal successors, (12276), 3667 states have internal predecessors, (12276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:30:24,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3668 states to 3668 states and 12276 transitions. [2021-08-21 13:30:24,634 INFO L78 Accepts]: Start accepts. Automaton has 3668 states and 12276 transitions. Word has length 39 [2021-08-21 13:30:24,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:30:24,634 INFO L470 AbstractCegarLoop]: Abstraction has 3668 states and 12276 transitions. [2021-08-21 13:30:24,634 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:30:24,634 INFO L276 IsEmpty]: Start isEmpty. Operand 3668 states and 12276 transitions. [2021-08-21 13:30:24,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:30:24,639 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:30:24,639 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:30:24,640 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable169 [2021-08-21 13:30:24,640 INFO L402 AbstractCegarLoop]: === Iteration 171 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:30:24,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:30:24,640 INFO L82 PathProgramCache]: Analyzing trace with hash 1943912502, now seen corresponding path program 171 times [2021-08-21 13:30:24,640 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:30:24,640 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1847929562] [2021-08-21 13:30:24,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:30:24,640 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:30:24,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:30:24,913 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:30:24,913 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:30:24,913 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1847929562] [2021-08-21 13:30:24,913 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1847929562] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:30:24,913 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:30:24,913 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-08-21 13:30:24,913 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577857775] [2021-08-21 13:30:24,913 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-08-21 13:30:24,913 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:30:24,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-08-21 13:30:24,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-08-21 13:30:24,914 INFO L87 Difference]: Start difference. First operand 3668 states and 12276 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:30:26,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:30:26,170 INFO L93 Difference]: Finished difference Result 4090 states and 13523 transitions. [2021-08-21 13:30:26,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-08-21 13:30:26,170 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:30:26,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:30:26,178 INFO L225 Difference]: With dead ends: 4090 [2021-08-21 13:30:26,179 INFO L226 Difference]: Without dead ends: 4035 [2021-08-21 13:30:26,179 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 510 ImplicationChecksByTransitivity, 775.5ms TimeCoverageRelationStatistics Valid=239, Invalid=2113, Unknown=0, NotChecked=0, Total=2352 [2021-08-21 13:30:26,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4035 states. [2021-08-21 13:30:26,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4035 to 3670. [2021-08-21 13:30:26,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3670 states, 3669 states have (on average 3.3466884709730174) internal successors, (12279), 3669 states have internal predecessors, (12279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:30:26,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3670 states to 3670 states and 12279 transitions. [2021-08-21 13:30:26,236 INFO L78 Accepts]: Start accepts. Automaton has 3670 states and 12279 transitions. Word has length 39 [2021-08-21 13:30:26,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:30:26,236 INFO L470 AbstractCegarLoop]: Abstraction has 3670 states and 12279 transitions. [2021-08-21 13:30:26,237 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:30:26,237 INFO L276 IsEmpty]: Start isEmpty. Operand 3670 states and 12279 transitions. [2021-08-21 13:30:26,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:30:26,242 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:30:26,242 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:30:26,242 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable170 [2021-08-21 13:30:26,243 INFO L402 AbstractCegarLoop]: === Iteration 172 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:30:26,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:30:26,243 INFO L82 PathProgramCache]: Analyzing trace with hash -1178402572, now seen corresponding path program 172 times [2021-08-21 13:30:26,243 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:30:26,243 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2039783112] [2021-08-21 13:30:26,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:30:26,243 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:30:26,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:30:26,554 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:30:26,554 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:30:26,554 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2039783112] [2021-08-21 13:30:26,554 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2039783112] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:30:26,554 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:30:26,554 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-08-21 13:30:26,554 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882728091] [2021-08-21 13:30:26,555 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-08-21 13:30:26,555 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:30:26,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-08-21 13:30:26,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-08-21 13:30:26,555 INFO L87 Difference]: Start difference. First operand 3670 states and 12279 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:30:27,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:30:27,755 INFO L93 Difference]: Finished difference Result 4000 states and 13325 transitions. [2021-08-21 13:30:27,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-08-21 13:30:27,755 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:30:27,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:30:27,764 INFO L225 Difference]: With dead ends: 4000 [2021-08-21 13:30:27,764 INFO L226 Difference]: Without dead ends: 3936 [2021-08-21 13:30:27,765 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 444 ImplicationChecksByTransitivity, 795.7ms TimeCoverageRelationStatistics Valid=224, Invalid=1938, Unknown=0, NotChecked=0, Total=2162 [2021-08-21 13:30:27,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3936 states. [2021-08-21 13:30:27,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3936 to 3664. [2021-08-21 13:30:27,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3664 states, 3663 states have (on average 3.3486213486213487) internal successors, (12266), 3663 states have internal predecessors, (12266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:30:27,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3664 states to 3664 states and 12266 transitions. [2021-08-21 13:30:27,824 INFO L78 Accepts]: Start accepts. Automaton has 3664 states and 12266 transitions. Word has length 39 [2021-08-21 13:30:27,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:30:27,824 INFO L470 AbstractCegarLoop]: Abstraction has 3664 states and 12266 transitions. [2021-08-21 13:30:27,824 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:30:27,824 INFO L276 IsEmpty]: Start isEmpty. Operand 3664 states and 12266 transitions. [2021-08-21 13:30:27,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:30:27,829 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:30:27,829 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:30:27,829 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable171 [2021-08-21 13:30:27,829 INFO L402 AbstractCegarLoop]: === Iteration 173 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:30:27,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:30:27,830 INFO L82 PathProgramCache]: Analyzing trace with hash 1063645750, now seen corresponding path program 173 times [2021-08-21 13:30:27,830 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:30:27,830 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [862411719] [2021-08-21 13:30:27,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:30:27,830 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:30:27,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:30:28,064 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:30:28,064 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:30:28,064 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [862411719] [2021-08-21 13:30:28,064 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [862411719] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:30:28,064 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:30:28,064 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-08-21 13:30:28,065 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308879183] [2021-08-21 13:30:28,065 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-08-21 13:30:28,065 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:30:28,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-08-21 13:30:28,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-08-21 13:30:28,065 INFO L87 Difference]: Start difference. First operand 3664 states and 12266 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:30:29,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:30:29,893 INFO L93 Difference]: Finished difference Result 4263 states and 14057 transitions. [2021-08-21 13:30:29,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-08-21 13:30:29,893 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:30:29,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:30:29,902 INFO L225 Difference]: With dead ends: 4263 [2021-08-21 13:30:29,902 INFO L226 Difference]: Without dead ends: 4126 [2021-08-21 13:30:29,902 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 867 ImplicationChecksByTransitivity, 1093.7ms TimeCoverageRelationStatistics Valid=307, Invalid=3115, Unknown=0, NotChecked=0, Total=3422 [2021-08-21 13:30:29,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4126 states. [2021-08-21 13:30:29,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4126 to 3668. [2021-08-21 13:30:29,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3668 states, 3667 states have (on average 3.347695664030543) internal successors, (12276), 3667 states have internal predecessors, (12276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:30:29,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3668 states to 3668 states and 12276 transitions. [2021-08-21 13:30:29,963 INFO L78 Accepts]: Start accepts. Automaton has 3668 states and 12276 transitions. Word has length 39 [2021-08-21 13:30:29,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:30:29,963 INFO L470 AbstractCegarLoop]: Abstraction has 3668 states and 12276 transitions. [2021-08-21 13:30:29,964 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:30:29,964 INFO L276 IsEmpty]: Start isEmpty. Operand 3668 states and 12276 transitions. [2021-08-21 13:30:29,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:30:29,970 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:30:29,970 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:30:29,970 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable172 [2021-08-21 13:30:29,970 INFO L402 AbstractCegarLoop]: === Iteration 174 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:30:29,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:30:29,970 INFO L82 PathProgramCache]: Analyzing trace with hash -431245150, now seen corresponding path program 174 times [2021-08-21 13:30:29,970 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:30:29,970 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1803339622] [2021-08-21 13:30:29,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:30:29,970 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:30:29,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:30:30,226 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:30:30,226 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:30:30,226 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1803339622] [2021-08-21 13:30:30,226 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1803339622] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:30:30,226 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:30:30,227 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-08-21 13:30:30,227 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501894670] [2021-08-21 13:30:30,227 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-08-21 13:30:30,227 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:30:30,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-08-21 13:30:30,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-08-21 13:30:30,227 INFO L87 Difference]: Start difference. First operand 3668 states and 12276 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:30:31,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:30:31,830 INFO L93 Difference]: Finished difference Result 4241 states and 13923 transitions. [2021-08-21 13:30:31,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-08-21 13:30:31,830 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:30:31,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:30:31,839 INFO L225 Difference]: With dead ends: 4241 [2021-08-21 13:30:31,839 INFO L226 Difference]: Without dead ends: 4177 [2021-08-21 13:30:31,839 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 787 ImplicationChecksByTransitivity, 1072.1ms TimeCoverageRelationStatistics Valid=299, Invalid=2893, Unknown=0, NotChecked=0, Total=3192 [2021-08-21 13:30:31,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4177 states. [2021-08-21 13:30:31,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4177 to 3668. [2021-08-21 13:30:31,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3668 states, 3667 states have (on average 3.347695664030543) internal successors, (12276), 3667 states have internal predecessors, (12276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:30:31,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3668 states to 3668 states and 12276 transitions. [2021-08-21 13:30:31,887 INFO L78 Accepts]: Start accepts. Automaton has 3668 states and 12276 transitions. Word has length 39 [2021-08-21 13:30:31,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:30:31,887 INFO L470 AbstractCegarLoop]: Abstraction has 3668 states and 12276 transitions. [2021-08-21 13:30:31,887 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:30:31,887 INFO L276 IsEmpty]: Start isEmpty. Operand 3668 states and 12276 transitions. [2021-08-21 13:30:31,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:30:31,892 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:30:31,892 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:30:31,892 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable173 [2021-08-21 13:30:31,892 INFO L402 AbstractCegarLoop]: === Iteration 175 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:30:31,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:30:31,892 INFO L82 PathProgramCache]: Analyzing trace with hash 487238420, now seen corresponding path program 175 times [2021-08-21 13:30:31,892 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:30:31,892 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1061448203] [2021-08-21 13:30:31,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:30:31,893 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:30:31,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:30:32,173 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:30:32,173 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:30:32,173 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1061448203] [2021-08-21 13:30:32,173 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1061448203] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:30:32,173 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:30:32,173 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-08-21 13:30:32,173 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43787774] [2021-08-21 13:30:32,173 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-08-21 13:30:32,173 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:30:32,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-08-21 13:30:32,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-08-21 13:30:32,174 INFO L87 Difference]: Start difference. First operand 3668 states and 12276 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:30:33,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:30:33,229 INFO L93 Difference]: Finished difference Result 4146 states and 13671 transitions. [2021-08-21 13:30:33,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-08-21 13:30:33,230 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:30:33,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:30:33,238 INFO L225 Difference]: With dead ends: 4146 [2021-08-21 13:30:33,238 INFO L226 Difference]: Without dead ends: 4091 [2021-08-21 13:30:33,239 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 477 ImplicationChecksByTransitivity, 666.1ms TimeCoverageRelationStatistics Valid=220, Invalid=2036, Unknown=0, NotChecked=0, Total=2256 [2021-08-21 13:30:33,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4091 states. [2021-08-21 13:30:33,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4091 to 3670. [2021-08-21 13:30:33,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3670 states, 3669 states have (on average 3.3466884709730174) internal successors, (12279), 3669 states have internal predecessors, (12279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:30:33,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3670 states to 3670 states and 12279 transitions. [2021-08-21 13:30:33,298 INFO L78 Accepts]: Start accepts. Automaton has 3670 states and 12279 transitions. Word has length 39 [2021-08-21 13:30:33,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:30:33,298 INFO L470 AbstractCegarLoop]: Abstraction has 3670 states and 12279 transitions. [2021-08-21 13:30:33,299 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:30:33,299 INFO L276 IsEmpty]: Start isEmpty. Operand 3670 states and 12279 transitions. [2021-08-21 13:30:33,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:30:33,305 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:30:33,305 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:30:33,305 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable174 [2021-08-21 13:30:33,305 INFO L402 AbstractCegarLoop]: === Iteration 176 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:30:33,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:30:33,305 INFO L82 PathProgramCache]: Analyzing trace with hash 1659890642, now seen corresponding path program 176 times [2021-08-21 13:30:33,305 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:30:33,305 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [435929588] [2021-08-21 13:30:33,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:30:33,305 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:30:33,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:30:33,555 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:30:33,556 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:30:33,556 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [435929588] [2021-08-21 13:30:33,556 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [435929588] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:30:33,556 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:30:33,556 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-08-21 13:30:33,556 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [36951348] [2021-08-21 13:30:33,556 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-08-21 13:30:33,556 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:30:33,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-08-21 13:30:33,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-08-21 13:30:33,556 INFO L87 Difference]: Start difference. First operand 3670 states and 12279 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:30:34,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:30:34,771 INFO L93 Difference]: Finished difference Result 4116 states and 13610 transitions. [2021-08-21 13:30:34,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-08-21 13:30:34,772 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:30:34,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:30:34,780 INFO L225 Difference]: With dead ends: 4116 [2021-08-21 13:30:34,780 INFO L226 Difference]: Without dead ends: 4056 [2021-08-21 13:30:34,780 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 480 ImplicationChecksByTransitivity, 777.9ms TimeCoverageRelationStatistics Valid=223, Invalid=2033, Unknown=0, NotChecked=0, Total=2256 [2021-08-21 13:30:34,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4056 states. [2021-08-21 13:30:34,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4056 to 3668. [2021-08-21 13:30:34,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3668 states, 3667 states have (on average 3.3471502590673574) internal successors, (12274), 3667 states have internal predecessors, (12274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:30:34,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3668 states to 3668 states and 12274 transitions. [2021-08-21 13:30:34,832 INFO L78 Accepts]: Start accepts. Automaton has 3668 states and 12274 transitions. Word has length 39 [2021-08-21 13:30:34,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:30:34,832 INFO L470 AbstractCegarLoop]: Abstraction has 3668 states and 12274 transitions. [2021-08-21 13:30:34,832 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:30:34,833 INFO L276 IsEmpty]: Start isEmpty. Operand 3668 states and 12274 transitions. [2021-08-21 13:30:34,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:30:34,837 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:30:34,838 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:30:34,838 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable175 [2021-08-21 13:30:34,838 INFO L402 AbstractCegarLoop]: === Iteration 177 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:30:34,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:30:34,838 INFO L82 PathProgramCache]: Analyzing trace with hash -419675900, now seen corresponding path program 177 times [2021-08-21 13:30:34,838 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:30:34,838 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2105820468] [2021-08-21 13:30:34,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:30:34,838 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:30:34,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:30:35,099 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:30:35,100 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:30:35,100 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2105820468] [2021-08-21 13:30:35,100 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2105820468] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:30:35,100 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:30:35,100 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-08-21 13:30:35,100 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2056302320] [2021-08-21 13:30:35,100 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-08-21 13:30:35,100 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:30:35,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-08-21 13:30:35,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2021-08-21 13:30:35,100 INFO L87 Difference]: Start difference. First operand 3668 states and 12274 transitions. Second operand has 15 states, 15 states have (on average 2.6) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:30:36,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:30:36,175 INFO L93 Difference]: Finished difference Result 4027 states and 13397 transitions. [2021-08-21 13:30:36,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-08-21 13:30:36,176 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.6) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:30:36,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:30:36,185 INFO L225 Difference]: With dead ends: 4027 [2021-08-21 13:30:36,185 INFO L226 Difference]: Without dead ends: 3951 [2021-08-21 13:30:36,185 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 391 ImplicationChecksByTransitivity, 681.9ms TimeCoverageRelationStatistics Valid=196, Invalid=1696, Unknown=0, NotChecked=0, Total=1892 [2021-08-21 13:30:36,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3951 states. [2021-08-21 13:30:36,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3951 to 3676. [2021-08-21 13:30:36,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3676 states, 3675 states have (on average 3.34421768707483) internal successors, (12290), 3675 states have internal predecessors, (12290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:30:36,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3676 states to 3676 states and 12290 transitions. [2021-08-21 13:30:36,243 INFO L78 Accepts]: Start accepts. Automaton has 3676 states and 12290 transitions. Word has length 39 [2021-08-21 13:30:36,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:30:36,243 INFO L470 AbstractCegarLoop]: Abstraction has 3676 states and 12290 transitions. [2021-08-21 13:30:36,243 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.6) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:30:36,243 INFO L276 IsEmpty]: Start isEmpty. Operand 3676 states and 12290 transitions. [2021-08-21 13:30:36,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:30:36,249 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:30:36,249 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:30:36,249 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable176 [2021-08-21 13:30:36,249 INFO L402 AbstractCegarLoop]: === Iteration 178 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:30:36,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:30:36,249 INFO L82 PathProgramCache]: Analyzing trace with hash -1437729512, now seen corresponding path program 178 times [2021-08-21 13:30:36,250 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:30:36,250 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1735753769] [2021-08-21 13:30:36,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:30:36,250 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:30:36,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:30:36,542 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:30:36,542 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:30:36,543 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1735753769] [2021-08-21 13:30:36,543 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1735753769] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:30:36,543 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:30:36,543 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-08-21 13:30:36,543 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463674198] [2021-08-21 13:30:36,543 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-08-21 13:30:36,543 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:30:36,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-08-21 13:30:36,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-08-21 13:30:36,543 INFO L87 Difference]: Start difference. First operand 3676 states and 12290 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:30:37,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:30:37,447 INFO L93 Difference]: Finished difference Result 4009 states and 13343 transitions. [2021-08-21 13:30:37,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-08-21 13:30:37,448 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:30:37,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:30:37,457 INFO L225 Difference]: With dead ends: 4009 [2021-08-21 13:30:37,457 INFO L226 Difference]: Without dead ends: 3931 [2021-08-21 13:30:37,458 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 448 ImplicationChecksByTransitivity, 645.1ms TimeCoverageRelationStatistics Valid=212, Invalid=1950, Unknown=0, NotChecked=0, Total=2162 [2021-08-21 13:30:37,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3931 states. [2021-08-21 13:30:37,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3931 to 3656. [2021-08-21 13:30:37,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3656 states, 3655 states have (on average 3.3493844049247605) internal successors, (12242), 3655 states have internal predecessors, (12242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:30:37,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3656 states to 3656 states and 12242 transitions. [2021-08-21 13:30:37,517 INFO L78 Accepts]: Start accepts. Automaton has 3656 states and 12242 transitions. Word has length 39 [2021-08-21 13:30:37,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:30:37,517 INFO L470 AbstractCegarLoop]: Abstraction has 3656 states and 12242 transitions. [2021-08-21 13:30:37,518 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:30:37,518 INFO L276 IsEmpty]: Start isEmpty. Operand 3656 states and 12242 transitions. [2021-08-21 13:30:37,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:30:37,523 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:30:37,523 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:30:37,523 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable177 [2021-08-21 13:30:37,523 INFO L402 AbstractCegarLoop]: === Iteration 179 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:30:37,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:30:37,523 INFO L82 PathProgramCache]: Analyzing trace with hash 446382202, now seen corresponding path program 179 times [2021-08-21 13:30:37,524 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:30:37,524 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1914939068] [2021-08-21 13:30:37,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:30:37,524 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:30:37,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:30:37,808 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:30:37,808 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:30:37,808 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1914939068] [2021-08-21 13:30:37,808 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1914939068] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:30:37,808 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:30:37,808 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-08-21 13:30:37,808 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [792649661] [2021-08-21 13:30:37,808 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-08-21 13:30:37,808 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:30:37,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-08-21 13:30:37,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-08-21 13:30:37,809 INFO L87 Difference]: Start difference. First operand 3656 states and 12242 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:30:39,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:30:39,032 INFO L93 Difference]: Finished difference Result 4203 states and 13963 transitions. [2021-08-21 13:30:39,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-08-21 13:30:39,032 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:30:39,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:30:39,040 INFO L225 Difference]: With dead ends: 4203 [2021-08-21 13:30:39,040 INFO L226 Difference]: Without dead ends: 4136 [2021-08-21 13:30:39,040 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 570 ImplicationChecksByTransitivity, 738.2ms TimeCoverageRelationStatistics Valid=251, Invalid=2299, Unknown=0, NotChecked=0, Total=2550 [2021-08-21 13:30:39,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4136 states. [2021-08-21 13:30:39,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4136 to 3696. [2021-08-21 13:30:39,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3696 states, 3695 states have (on average 3.346955345060893) internal successors, (12367), 3695 states have internal predecessors, (12367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:30:39,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3696 states to 3696 states and 12367 transitions. [2021-08-21 13:30:39,093 INFO L78 Accepts]: Start accepts. Automaton has 3696 states and 12367 transitions. Word has length 39 [2021-08-21 13:30:39,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:30:39,093 INFO L470 AbstractCegarLoop]: Abstraction has 3696 states and 12367 transitions. [2021-08-21 13:30:39,093 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:30:39,093 INFO L276 IsEmpty]: Start isEmpty. Operand 3696 states and 12367 transitions. [2021-08-21 13:30:39,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:30:39,098 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:30:39,098 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:30:39,099 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable178 [2021-08-21 13:30:39,099 INFO L402 AbstractCegarLoop]: === Iteration 180 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:30:39,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:30:39,099 INFO L82 PathProgramCache]: Analyzing trace with hash -1273233768, now seen corresponding path program 180 times [2021-08-21 13:30:39,099 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:30:39,099 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1528156910] [2021-08-21 13:30:39,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:30:39,099 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:30:39,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:30:39,303 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:30:39,303 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:30:39,303 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1528156910] [2021-08-21 13:30:39,303 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1528156910] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:30:39,303 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:30:39,303 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-08-21 13:30:39,303 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188869580] [2021-08-21 13:30:39,303 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-08-21 13:30:39,303 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:30:39,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-08-21 13:30:39,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-08-21 13:30:39,304 INFO L87 Difference]: Start difference. First operand 3696 states and 12367 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:30:40,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:30:40,728 INFO L93 Difference]: Finished difference Result 4340 states and 14320 transitions. [2021-08-21 13:30:40,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-08-21 13:30:40,728 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:30:40,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:30:40,737 INFO L225 Difference]: With dead ends: 4340 [2021-08-21 13:30:40,737 INFO L226 Difference]: Without dead ends: 4297 [2021-08-21 13:30:40,738 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 947 ImplicationChecksByTransitivity, 884.7ms TimeCoverageRelationStatistics Valid=332, Invalid=3328, Unknown=0, NotChecked=0, Total=3660 [2021-08-21 13:30:40,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4297 states. [2021-08-21 13:30:40,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4297 to 3702. [2021-08-21 13:30:40,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3702 states, 3701 states have (on average 3.3450418805728184) internal successors, (12380), 3701 states have internal predecessors, (12380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:30:40,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3702 states to 3702 states and 12380 transitions. [2021-08-21 13:30:40,795 INFO L78 Accepts]: Start accepts. Automaton has 3702 states and 12380 transitions. Word has length 39 [2021-08-21 13:30:40,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:30:40,795 INFO L470 AbstractCegarLoop]: Abstraction has 3702 states and 12380 transitions. [2021-08-21 13:30:40,795 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:30:40,795 INFO L276 IsEmpty]: Start isEmpty. Operand 3702 states and 12380 transitions. [2021-08-21 13:30:40,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:30:40,800 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:30:40,800 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:30:40,800 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable179 [2021-08-21 13:30:40,800 INFO L402 AbstractCegarLoop]: === Iteration 181 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:30:40,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:30:40,801 INFO L82 PathProgramCache]: Analyzing trace with hash 1241135226, now seen corresponding path program 181 times [2021-08-21 13:30:40,801 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:30:40,801 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [637847723] [2021-08-21 13:30:40,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:30:40,801 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:30:40,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:30:41,161 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:30:41,161 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:30:41,161 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [637847723] [2021-08-21 13:30:41,161 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [637847723] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:30:41,161 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:30:41,161 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-08-21 13:30:41,161 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223066871] [2021-08-21 13:30:41,161 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-08-21 13:30:41,161 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:30:41,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-08-21 13:30:41,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-08-21 13:30:41,162 INFO L87 Difference]: Start difference. First operand 3702 states and 12380 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:30:42,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:30:42,770 INFO L93 Difference]: Finished difference Result 4271 states and 14140 transitions. [2021-08-21 13:30:42,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-08-21 13:30:42,770 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:30:42,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:30:42,778 INFO L225 Difference]: With dead ends: 4271 [2021-08-21 13:30:42,778 INFO L226 Difference]: Without dead ends: 4207 [2021-08-21 13:30:42,778 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 862 ImplicationChecksByTransitivity, 1023.0ms TimeCoverageRelationStatistics Valid=314, Invalid=3108, Unknown=0, NotChecked=0, Total=3422 [2021-08-21 13:30:42,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4207 states. [2021-08-21 13:30:42,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4207 to 3684. [2021-08-21 13:30:42,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3684 states, 3683 states have (on average 3.3497149063263643) internal successors, (12337), 3683 states have internal predecessors, (12337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:30:42,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3684 states to 3684 states and 12337 transitions. [2021-08-21 13:30:42,827 INFO L78 Accepts]: Start accepts. Automaton has 3684 states and 12337 transitions. Word has length 39 [2021-08-21 13:30:42,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:30:42,828 INFO L470 AbstractCegarLoop]: Abstraction has 3684 states and 12337 transitions. [2021-08-21 13:30:42,828 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:30:42,828 INFO L276 IsEmpty]: Start isEmpty. Operand 3684 states and 12337 transitions. [2021-08-21 13:30:42,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:30:42,832 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:30:42,832 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:30:42,832 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable180 [2021-08-21 13:30:42,832 INFO L402 AbstractCegarLoop]: === Iteration 182 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:30:42,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:30:42,833 INFO L82 PathProgramCache]: Analyzing trace with hash 1861569626, now seen corresponding path program 182 times [2021-08-21 13:30:42,833 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:30:42,833 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1968065442] [2021-08-21 13:30:42,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:30:42,833 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:30:42,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:30:43,021 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:30:43,022 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:30:43,022 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1968065442] [2021-08-21 13:30:43,022 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1968065442] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:30:43,022 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:30:43,022 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-08-21 13:30:43,022 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [292644233] [2021-08-21 13:30:43,022 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-08-21 13:30:43,022 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:30:43,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-08-21 13:30:43,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-08-21 13:30:43,022 INFO L87 Difference]: Start difference. First operand 3684 states and 12337 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:30:43,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:30:43,863 INFO L93 Difference]: Finished difference Result 4183 states and 13891 transitions. [2021-08-21 13:30:43,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-08-21 13:30:43,863 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:30:43,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:30:43,872 INFO L225 Difference]: With dead ends: 4183 [2021-08-21 13:30:43,872 INFO L226 Difference]: Without dead ends: 4116 [2021-08-21 13:30:43,872 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 415 ImplicationChecksByTransitivity, 511.2ms TimeCoverageRelationStatistics Valid=212, Invalid=1858, Unknown=0, NotChecked=0, Total=2070 [2021-08-21 13:30:43,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4116 states. [2021-08-21 13:30:43,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4116 to 3712. [2021-08-21 13:30:43,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3712 states, 3711 states have (on average 3.345998383185125) internal successors, (12417), 3711 states have internal predecessors, (12417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:30:43,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3712 states to 3712 states and 12417 transitions. [2021-08-21 13:30:43,918 INFO L78 Accepts]: Start accepts. Automaton has 3712 states and 12417 transitions. Word has length 39 [2021-08-21 13:30:43,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:30:43,918 INFO L470 AbstractCegarLoop]: Abstraction has 3712 states and 12417 transitions. [2021-08-21 13:30:43,918 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:30:43,918 INFO L276 IsEmpty]: Start isEmpty. Operand 3712 states and 12417 transitions. [2021-08-21 13:30:43,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:30:43,923 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:30:43,923 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:30:43,923 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable181 [2021-08-21 13:30:43,923 INFO L402 AbstractCegarLoop]: === Iteration 183 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:30:43,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:30:43,923 INFO L82 PathProgramCache]: Analyzing trace with hash 1730974778, now seen corresponding path program 183 times [2021-08-21 13:30:43,923 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:30:43,924 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1418635758] [2021-08-21 13:30:43,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:30:43,924 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:30:43,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:30:44,111 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:30:44,112 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:30:44,112 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1418635758] [2021-08-21 13:30:44,112 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1418635758] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:30:44,112 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:30:44,112 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-08-21 13:30:44,112 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1170725560] [2021-08-21 13:30:44,112 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-08-21 13:30:44,112 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:30:44,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-08-21 13:30:44,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-08-21 13:30:44,112 INFO L87 Difference]: Start difference. First operand 3712 states and 12417 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:30:44,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:30:44,975 INFO L93 Difference]: Finished difference Result 4171 states and 13851 transitions. [2021-08-21 13:30:44,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-08-21 13:30:44,975 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:30:44,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:30:44,984 INFO L225 Difference]: With dead ends: 4171 [2021-08-21 13:30:44,984 INFO L226 Difference]: Without dead ends: 4108 [2021-08-21 13:30:44,984 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 477 ImplicationChecksByTransitivity, 522.0ms TimeCoverageRelationStatistics Valid=226, Invalid=2030, Unknown=0, NotChecked=0, Total=2256 [2021-08-21 13:30:44,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4108 states. [2021-08-21 13:30:45,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4108 to 3704. [2021-08-21 13:30:45,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3704 states, 3703 states have (on average 3.347826086956522) internal successors, (12397), 3703 states have internal predecessors, (12397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:30:45,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3704 states to 3704 states and 12397 transitions. [2021-08-21 13:30:45,036 INFO L78 Accepts]: Start accepts. Automaton has 3704 states and 12397 transitions. Word has length 39 [2021-08-21 13:30:45,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:30:45,036 INFO L470 AbstractCegarLoop]: Abstraction has 3704 states and 12397 transitions. [2021-08-21 13:30:45,036 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:30:45,036 INFO L276 IsEmpty]: Start isEmpty. Operand 3704 states and 12397 transitions. [2021-08-21 13:30:45,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:30:45,048 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:30:45,048 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:30:45,048 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable182 [2021-08-21 13:30:45,048 INFO L402 AbstractCegarLoop]: === Iteration 184 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:30:45,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:30:45,048 INFO L82 PathProgramCache]: Analyzing trace with hash 1595296186, now seen corresponding path program 184 times [2021-08-21 13:30:45,048 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:30:45,048 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1899154250] [2021-08-21 13:30:45,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:30:45,049 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:30:45,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:30:45,260 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:30:45,260 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:30:45,260 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1899154250] [2021-08-21 13:30:45,261 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1899154250] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:30:45,261 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:30:45,261 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-08-21 13:30:45,261 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018488308] [2021-08-21 13:30:45,261 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-08-21 13:30:45,261 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:30:45,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-08-21 13:30:45,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-08-21 13:30:45,261 INFO L87 Difference]: Start difference. First operand 3704 states and 12397 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:30:46,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:30:46,435 INFO L93 Difference]: Finished difference Result 4334 states and 14240 transitions. [2021-08-21 13:30:46,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2021-08-21 13:30:46,435 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:30:46,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:30:46,443 INFO L225 Difference]: With dead ends: 4334 [2021-08-21 13:30:46,443 INFO L226 Difference]: Without dead ends: 4291 [2021-08-21 13:30:46,444 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 863 ImplicationChecksByTransitivity, 754.9ms TimeCoverageRelationStatistics Valid=323, Invalid=3099, Unknown=0, NotChecked=0, Total=3422 [2021-08-21 13:30:46,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4291 states. [2021-08-21 13:30:46,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4291 to 3712. [2021-08-21 13:30:46,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3712 states, 3711 states have (on average 3.345998383185125) internal successors, (12417), 3711 states have internal predecessors, (12417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:30:46,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3712 states to 3712 states and 12417 transitions. [2021-08-21 13:30:46,498 INFO L78 Accepts]: Start accepts. Automaton has 3712 states and 12417 transitions. Word has length 39 [2021-08-21 13:30:46,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:30:46,498 INFO L470 AbstractCegarLoop]: Abstraction has 3712 states and 12417 transitions. [2021-08-21 13:30:46,498 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:30:46,498 INFO L276 IsEmpty]: Start isEmpty. Operand 3712 states and 12417 transitions. [2021-08-21 13:30:46,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:30:46,503 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:30:46,503 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:30:46,503 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable183 [2021-08-21 13:30:46,503 INFO L402 AbstractCegarLoop]: === Iteration 185 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:30:46,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:30:46,503 INFO L82 PathProgramCache]: Analyzing trace with hash -185302116, now seen corresponding path program 185 times [2021-08-21 13:30:46,504 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:30:46,504 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [75105942] [2021-08-21 13:30:46,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:30:46,504 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:30:46,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:30:46,694 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:30:46,694 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:30:46,694 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [75105942] [2021-08-21 13:30:46,694 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [75105942] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:30:46,694 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:30:46,695 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-08-21 13:30:46,695 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [108326166] [2021-08-21 13:30:46,695 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-08-21 13:30:46,695 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:30:46,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-08-21 13:30:46,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-08-21 13:30:46,695 INFO L87 Difference]: Start difference. First operand 3712 states and 12417 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:30:47,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:30:47,814 INFO L93 Difference]: Finished difference Result 4322 states and 14202 transitions. [2021-08-21 13:30:47,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-08-21 13:30:47,815 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:30:47,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:30:47,823 INFO L225 Difference]: With dead ends: 4322 [2021-08-21 13:30:47,823 INFO L226 Difference]: Without dead ends: 4270 [2021-08-21 13:30:47,823 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 821 ImplicationChecksByTransitivity, 720.4ms TimeCoverageRelationStatistics Valid=315, Invalid=2991, Unknown=0, NotChecked=0, Total=3306 [2021-08-21 13:30:47,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4270 states. [2021-08-21 13:30:47,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4270 to 3704. [2021-08-21 13:30:47,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3704 states, 3703 states have (on average 3.347826086956522) internal successors, (12397), 3703 states have internal predecessors, (12397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:30:47,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3704 states to 3704 states and 12397 transitions. [2021-08-21 13:30:47,892 INFO L78 Accepts]: Start accepts. Automaton has 3704 states and 12397 transitions. Word has length 39 [2021-08-21 13:30:47,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:30:47,892 INFO L470 AbstractCegarLoop]: Abstraction has 3704 states and 12397 transitions. [2021-08-21 13:30:47,892 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:30:47,892 INFO L276 IsEmpty]: Start isEmpty. Operand 3704 states and 12397 transitions. [2021-08-21 13:30:47,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:30:47,897 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:30:47,897 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:30:47,897 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable184 [2021-08-21 13:30:47,897 INFO L402 AbstractCegarLoop]: === Iteration 186 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:30:47,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:30:47,897 INFO L82 PathProgramCache]: Analyzing trace with hash -1781187540, now seen corresponding path program 186 times [2021-08-21 13:30:47,897 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:30:47,897 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1472250238] [2021-08-21 13:30:47,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:30:47,897 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:30:47,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:30:48,108 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:30:48,108 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:30:48,108 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1472250238] [2021-08-21 13:30:48,108 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1472250238] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:30:48,109 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:30:48,109 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-08-21 13:30:48,109 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [82826066] [2021-08-21 13:30:48,110 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-08-21 13:30:48,110 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:30:48,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-08-21 13:30:48,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-08-21 13:30:48,110 INFO L87 Difference]: Start difference. First operand 3704 states and 12397 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:30:49,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:30:49,005 INFO L93 Difference]: Finished difference Result 4299 states and 14125 transitions. [2021-08-21 13:30:49,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-08-21 13:30:49,005 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:30:49,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:30:49,014 INFO L225 Difference]: With dead ends: 4299 [2021-08-21 13:30:49,014 INFO L226 Difference]: Without dead ends: 4244 [2021-08-21 13:30:49,014 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 568 ImplicationChecksByTransitivity, 561.4ms TimeCoverageRelationStatistics Valid=258, Invalid=2292, Unknown=0, NotChecked=0, Total=2550 [2021-08-21 13:30:49,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4244 states. [2021-08-21 13:30:49,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4244 to 3706. [2021-08-21 13:30:49,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3706 states, 3705 states have (on average 3.3468286099865048) internal successors, (12400), 3705 states have internal predecessors, (12400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:30:49,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3706 states to 3706 states and 12400 transitions. [2021-08-21 13:30:49,063 INFO L78 Accepts]: Start accepts. Automaton has 3706 states and 12400 transitions. Word has length 39 [2021-08-21 13:30:49,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:30:49,063 INFO L470 AbstractCegarLoop]: Abstraction has 3706 states and 12400 transitions. [2021-08-21 13:30:49,064 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:30:49,064 INFO L276 IsEmpty]: Start isEmpty. Operand 3706 states and 12400 transitions. [2021-08-21 13:30:49,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:30:49,068 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:30:49,068 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:30:49,068 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable185 [2021-08-21 13:30:49,068 INFO L402 AbstractCegarLoop]: === Iteration 187 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:30:49,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:30:49,069 INFO L82 PathProgramCache]: Analyzing trace with hash -608535318, now seen corresponding path program 187 times [2021-08-21 13:30:49,069 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:30:49,069 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1215125105] [2021-08-21 13:30:49,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:30:49,069 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:30:49,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:30:49,315 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:30:49,316 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:30:49,316 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1215125105] [2021-08-21 13:30:49,316 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1215125105] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:30:49,316 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:30:49,316 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-08-21 13:30:49,316 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043454116] [2021-08-21 13:30:49,316 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-08-21 13:30:49,316 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:30:49,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-08-21 13:30:49,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-08-21 13:30:49,316 INFO L87 Difference]: Start difference. First operand 3706 states and 12400 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:30:50,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:30:50,548 INFO L93 Difference]: Finished difference Result 4234 states and 13973 transitions. [2021-08-21 13:30:50,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-08-21 13:30:50,548 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:30:50,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:30:50,556 INFO L225 Difference]: With dead ends: 4234 [2021-08-21 13:30:50,556 INFO L226 Difference]: Without dead ends: 4188 [2021-08-21 13:30:50,556 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 469 ImplicationChecksByTransitivity, 760.4ms TimeCoverageRelationStatistics Valid=233, Invalid=2023, Unknown=0, NotChecked=0, Total=2256 [2021-08-21 13:30:50,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4188 states. [2021-08-21 13:30:50,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4188 to 3710. [2021-08-21 13:30:50,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3710 states, 3709 states have (on average 3.3453761121596117) internal successors, (12408), 3709 states have internal predecessors, (12408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:30:50,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3710 states to 3710 states and 12408 transitions. [2021-08-21 13:30:50,611 INFO L78 Accepts]: Start accepts. Automaton has 3710 states and 12408 transitions. Word has length 39 [2021-08-21 13:30:50,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:30:50,611 INFO L470 AbstractCegarLoop]: Abstraction has 3710 states and 12408 transitions. [2021-08-21 13:30:50,611 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:30:50,611 INFO L276 IsEmpty]: Start isEmpty. Operand 3710 states and 12408 transitions. [2021-08-21 13:30:50,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:30:50,617 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:30:50,617 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:30:50,617 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable186 [2021-08-21 13:30:50,617 INFO L402 AbstractCegarLoop]: === Iteration 188 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:30:50,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:30:50,617 INFO L82 PathProgramCache]: Analyzing trace with hash -856001480, now seen corresponding path program 188 times [2021-08-21 13:30:50,617 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:30:50,617 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1059827803] [2021-08-21 13:30:50,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:30:50,617 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:30:50,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:30:50,892 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:30:50,892 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:30:50,892 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1059827803] [2021-08-21 13:30:50,892 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1059827803] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:30:50,892 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:30:50,892 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-08-21 13:30:50,892 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098363366] [2021-08-21 13:30:50,893 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-08-21 13:30:50,893 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:30:50,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-08-21 13:30:50,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-08-21 13:30:50,893 INFO L87 Difference]: Start difference. First operand 3710 states and 12408 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:30:52,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:30:52,272 INFO L93 Difference]: Finished difference Result 4218 states and 13962 transitions. [2021-08-21 13:30:52,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-08-21 13:30:52,273 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:30:52,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:30:52,281 INFO L225 Difference]: With dead ends: 4218 [2021-08-21 13:30:52,281 INFO L226 Difference]: Without dead ends: 4169 [2021-08-21 13:30:52,282 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 561 ImplicationChecksByTransitivity, 885.6ms TimeCoverageRelationStatistics Valid=263, Invalid=2287, Unknown=0, NotChecked=0, Total=2550 [2021-08-21 13:30:52,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4169 states. [2021-08-21 13:30:52,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4169 to 3700. [2021-08-21 13:30:52,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3700 states, 3699 states have (on average 3.348742903487429) internal successors, (12387), 3699 states have internal predecessors, (12387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:30:52,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3700 states to 3700 states and 12387 transitions. [2021-08-21 13:30:52,335 INFO L78 Accepts]: Start accepts. Automaton has 3700 states and 12387 transitions. Word has length 39 [2021-08-21 13:30:52,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:30:52,335 INFO L470 AbstractCegarLoop]: Abstraction has 3700 states and 12387 transitions. [2021-08-21 13:30:52,335 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:30:52,336 INFO L276 IsEmpty]: Start isEmpty. Operand 3700 states and 12387 transitions. [2021-08-21 13:30:52,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:30:52,341 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:30:52,341 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:30:52,341 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable187 [2021-08-21 13:30:52,341 INFO L402 AbstractCegarLoop]: === Iteration 189 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:30:52,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:30:52,341 INFO L82 PathProgramCache]: Analyzing trace with hash 682874042, now seen corresponding path program 189 times [2021-08-21 13:30:52,341 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:30:52,341 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1365294483] [2021-08-21 13:30:52,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:30:52,341 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:30:52,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:30:52,621 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:30:52,622 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:30:52,622 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1365294483] [2021-08-21 13:30:52,622 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1365294483] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:30:52,622 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:30:52,622 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-08-21 13:30:52,622 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765302385] [2021-08-21 13:30:52,622 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-08-21 13:30:52,622 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:30:52,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-08-21 13:30:52,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-08-21 13:30:52,622 INFO L87 Difference]: Start difference. First operand 3700 states and 12387 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:30:53,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:30:53,802 INFO L93 Difference]: Finished difference Result 4155 states and 13831 transitions. [2021-08-21 13:30:53,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-08-21 13:30:53,802 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:30:53,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:30:53,811 INFO L225 Difference]: With dead ends: 4155 [2021-08-21 13:30:53,811 INFO L226 Difference]: Without dead ends: 4088 [2021-08-21 13:30:53,811 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 337 ImplicationChecksByTransitivity, 646.6ms TimeCoverageRelationStatistics Valid=181, Invalid=1625, Unknown=0, NotChecked=0, Total=1806 [2021-08-21 13:30:53,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4088 states. [2021-08-21 13:30:53,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4088 to 3740. [2021-08-21 13:30:53,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3740 states, 3739 states have (on average 3.3418026210216634) internal successors, (12495), 3739 states have internal predecessors, (12495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:30:53,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3740 states to 3740 states and 12495 transitions. [2021-08-21 13:30:53,863 INFO L78 Accepts]: Start accepts. Automaton has 3740 states and 12495 transitions. Word has length 39 [2021-08-21 13:30:53,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:30:53,863 INFO L470 AbstractCegarLoop]: Abstraction has 3740 states and 12495 transitions. [2021-08-21 13:30:53,863 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:30:53,863 INFO L276 IsEmpty]: Start isEmpty. Operand 3740 states and 12495 transitions. [2021-08-21 13:30:53,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:30:53,868 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:30:53,868 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:30:53,868 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable188 [2021-08-21 13:30:53,868 INFO L402 AbstractCegarLoop]: === Iteration 190 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:30:53,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:30:53,869 INFO L82 PathProgramCache]: Analyzing trace with hash 552279194, now seen corresponding path program 190 times [2021-08-21 13:30:53,869 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:30:53,869 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1850453151] [2021-08-21 13:30:53,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:30:53,869 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:30:53,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:30:54,147 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:30:54,148 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:30:54,148 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1850453151] [2021-08-21 13:30:54,148 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1850453151] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:30:54,148 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:30:54,148 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-08-21 13:30:54,148 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1304328794] [2021-08-21 13:30:54,148 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-08-21 13:30:54,148 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:30:54,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-08-21 13:30:54,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-08-21 13:30:54,148 INFO L87 Difference]: Start difference. First operand 3740 states and 12495 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:30:55,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:30:55,321 INFO L93 Difference]: Finished difference Result 4143 states and 13791 transitions. [2021-08-21 13:30:55,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-08-21 13:30:55,321 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:30:55,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:30:55,329 INFO L225 Difference]: With dead ends: 4143 [2021-08-21 13:30:55,329 INFO L226 Difference]: Without dead ends: 4080 [2021-08-21 13:30:55,330 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 363 ImplicationChecksByTransitivity, 670.9ms TimeCoverageRelationStatistics Valid=189, Invalid=1703, Unknown=0, NotChecked=0, Total=1892 [2021-08-21 13:30:55,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4080 states. [2021-08-21 13:30:55,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4080 to 3732. [2021-08-21 13:30:55,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3732 states, 3731 states have (on average 3.3425355132672205) internal successors, (12471), 3731 states have internal predecessors, (12471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:30:55,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3732 states to 3732 states and 12471 transitions. [2021-08-21 13:30:55,390 INFO L78 Accepts]: Start accepts. Automaton has 3732 states and 12471 transitions. Word has length 39 [2021-08-21 13:30:55,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:30:55,390 INFO L470 AbstractCegarLoop]: Abstraction has 3732 states and 12471 transitions. [2021-08-21 13:30:55,390 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:30:55,390 INFO L276 IsEmpty]: Start isEmpty. Operand 3732 states and 12471 transitions. [2021-08-21 13:30:55,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:30:55,396 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:30:55,396 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:30:55,396 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable189 [2021-08-21 13:30:55,396 INFO L402 AbstractCegarLoop]: === Iteration 191 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:30:55,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:30:55,397 INFO L82 PathProgramCache]: Analyzing trace with hash 22378746, now seen corresponding path program 191 times [2021-08-21 13:30:55,397 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:30:55,397 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1427934498] [2021-08-21 13:30:55,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:30:55,397 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:30:55,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:30:55,693 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:30:55,693 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:30:55,693 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1427934498] [2021-08-21 13:30:55,693 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1427934498] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:30:55,693 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:30:55,693 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-08-21 13:30:55,693 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1033231659] [2021-08-21 13:30:55,693 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-08-21 13:30:55,693 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:30:55,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-08-21 13:30:55,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-08-21 13:30:55,694 INFO L87 Difference]: Start difference. First operand 3732 states and 12471 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:30:56,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:30:56,706 INFO L93 Difference]: Finished difference Result 4167 states and 13851 transitions. [2021-08-21 13:30:56,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-08-21 13:30:56,706 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:30:56,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:30:56,714 INFO L225 Difference]: With dead ends: 4167 [2021-08-21 13:30:56,715 INFO L226 Difference]: Without dead ends: 4044 [2021-08-21 13:30:56,715 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 389 ImplicationChecksByTransitivity, 572.6ms TimeCoverageRelationStatistics Valid=195, Invalid=1785, Unknown=0, NotChecked=0, Total=1980 [2021-08-21 13:30:56,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4044 states. [2021-08-21 13:30:56,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4044 to 3684. [2021-08-21 13:30:56,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3684 states, 3683 states have (on average 3.3497149063263643) internal successors, (12337), 3683 states have internal predecessors, (12337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:30:56,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3684 states to 3684 states and 12337 transitions. [2021-08-21 13:30:56,766 INFO L78 Accepts]: Start accepts. Automaton has 3684 states and 12337 transitions. Word has length 39 [2021-08-21 13:30:56,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:30:56,766 INFO L470 AbstractCegarLoop]: Abstraction has 3684 states and 12337 transitions. [2021-08-21 13:30:56,766 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:30:56,766 INFO L276 IsEmpty]: Start isEmpty. Operand 3684 states and 12337 transitions. [2021-08-21 13:30:56,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:30:56,771 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:30:56,771 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:30:56,772 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable190 [2021-08-21 13:30:56,773 INFO L402 AbstractCegarLoop]: === Iteration 192 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:30:56,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:30:56,773 INFO L82 PathProgramCache]: Analyzing trace with hash -696032424, now seen corresponding path program 192 times [2021-08-21 13:30:56,773 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:30:56,773 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [704981224] [2021-08-21 13:30:56,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:30:56,773 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:30:56,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:30:56,958 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:30:56,958 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:30:56,958 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [704981224] [2021-08-21 13:30:56,959 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [704981224] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:30:56,959 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:30:56,959 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-08-21 13:30:56,959 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510329415] [2021-08-21 13:30:56,959 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-08-21 13:30:56,960 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:30:56,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-08-21 13:30:56,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-08-21 13:30:56,960 INFO L87 Difference]: Start difference. First operand 3684 states and 12337 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:30:58,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:30:58,949 INFO L93 Difference]: Finished difference Result 6284 states and 21185 transitions. [2021-08-21 13:30:58,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2021-08-21 13:30:58,950 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:30:58,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:30:58,962 INFO L225 Difference]: With dead ends: 6284 [2021-08-21 13:30:58,962 INFO L226 Difference]: Without dead ends: 6241 [2021-08-21 13:30:58,963 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1277 ImplicationChecksByTransitivity, 1148.5ms TimeCoverageRelationStatistics Valid=399, Invalid=4157, Unknown=0, NotChecked=0, Total=4556 [2021-08-21 13:30:58,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6241 states. [2021-08-21 13:30:59,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6241 to 3912. [2021-08-21 13:30:59,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3912 states, 3911 states have (on average 3.3623114293019687) internal successors, (13150), 3911 states have internal predecessors, (13150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:30:59,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3912 states to 3912 states and 13150 transitions. [2021-08-21 13:30:59,026 INFO L78 Accepts]: Start accepts. Automaton has 3912 states and 13150 transitions. Word has length 39 [2021-08-21 13:30:59,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:30:59,026 INFO L470 AbstractCegarLoop]: Abstraction has 3912 states and 13150 transitions. [2021-08-21 13:30:59,026 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:30:59,026 INFO L276 IsEmpty]: Start isEmpty. Operand 3912 states and 13150 transitions. [2021-08-21 13:30:59,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:30:59,032 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:30:59,032 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:30:59,032 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable191 [2021-08-21 13:30:59,032 INFO L402 AbstractCegarLoop]: === Iteration 193 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:30:59,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:30:59,032 INFO L82 PathProgramCache]: Analyzing trace with hash 1818336570, now seen corresponding path program 193 times [2021-08-21 13:30:59,032 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:30:59,032 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [804585969] [2021-08-21 13:30:59,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:30:59,033 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:30:59,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:30:59,251 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:30:59,252 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:30:59,252 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [804585969] [2021-08-21 13:30:59,252 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [804585969] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:30:59,252 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:30:59,252 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-08-21 13:30:59,252 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847336731] [2021-08-21 13:30:59,252 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-08-21 13:30:59,252 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:30:59,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-08-21 13:30:59,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-08-21 13:30:59,252 INFO L87 Difference]: Start difference. First operand 3912 states and 13150 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:31:01,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:31:01,355 INFO L93 Difference]: Finished difference Result 7189 states and 24259 transitions. [2021-08-21 13:31:01,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2021-08-21 13:31:01,356 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:31:01,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:31:01,371 INFO L225 Difference]: With dead ends: 7189 [2021-08-21 13:31:01,371 INFO L226 Difference]: Without dead ends: 7137 [2021-08-21 13:31:01,372 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1653 ImplicationChecksByTransitivity, 1187.0ms TimeCoverageRelationStatistics Valid=448, Invalid=5102, Unknown=0, NotChecked=0, Total=5550 [2021-08-21 13:31:01,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7137 states. [2021-08-21 13:31:01,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7137 to 3882. [2021-08-21 13:31:01,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3882 states, 3881 states have (on average 3.3638237567637206) internal successors, (13055), 3881 states have internal predecessors, (13055), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:31:01,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3882 states to 3882 states and 13055 transitions. [2021-08-21 13:31:01,445 INFO L78 Accepts]: Start accepts. Automaton has 3882 states and 13055 transitions. Word has length 39 [2021-08-21 13:31:01,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:31:01,445 INFO L470 AbstractCegarLoop]: Abstraction has 3882 states and 13055 transitions. [2021-08-21 13:31:01,445 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:31:01,445 INFO L276 IsEmpty]: Start isEmpty. Operand 3882 states and 13055 transitions. [2021-08-21 13:31:01,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:31:01,450 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:31:01,450 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:31:01,450 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable192 [2021-08-21 13:31:01,450 INFO L402 AbstractCegarLoop]: === Iteration 194 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:31:01,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:31:01,450 INFO L82 PathProgramCache]: Analyzing trace with hash 222451146, now seen corresponding path program 194 times [2021-08-21 13:31:01,450 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:31:01,450 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1456649696] [2021-08-21 13:31:01,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:31:01,451 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:31:01,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:31:01,741 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:31:01,741 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:31:01,742 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1456649696] [2021-08-21 13:31:01,742 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1456649696] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:31:01,742 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:31:01,742 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-08-21 13:31:01,742 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2145483149] [2021-08-21 13:31:01,742 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-08-21 13:31:01,742 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:31:01,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-08-21 13:31:01,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-08-21 13:31:01,742 INFO L87 Difference]: Start difference. First operand 3882 states and 13055 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:31:03,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:31:03,274 INFO L93 Difference]: Finished difference Result 6209 states and 20838 transitions. [2021-08-21 13:31:03,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-08-21 13:31:03,274 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:31:03,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:31:03,288 INFO L225 Difference]: With dead ends: 6209 [2021-08-21 13:31:03,288 INFO L226 Difference]: Without dead ends: 6154 [2021-08-21 13:31:03,288 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 602 ImplicationChecksByTransitivity, 835.5ms TimeCoverageRelationStatistics Valid=262, Invalid=2390, Unknown=0, NotChecked=0, Total=2652 [2021-08-21 13:31:03,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6154 states. [2021-08-21 13:31:03,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6154 to 4087. [2021-08-21 13:31:03,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4087 states, 4086 states have (on average 3.3805677924620654) internal successors, (13813), 4086 states have internal predecessors, (13813), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:31:03,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4087 states to 4087 states and 13813 transitions. [2021-08-21 13:31:03,404 INFO L78 Accepts]: Start accepts. Automaton has 4087 states and 13813 transitions. Word has length 39 [2021-08-21 13:31:03,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:31:03,404 INFO L470 AbstractCegarLoop]: Abstraction has 4087 states and 13813 transitions. [2021-08-21 13:31:03,404 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:31:03,404 INFO L276 IsEmpty]: Start isEmpty. Operand 4087 states and 13813 transitions. [2021-08-21 13:31:03,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:31:03,410 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:31:03,410 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:31:03,410 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable193 [2021-08-21 13:31:03,410 INFO L402 AbstractCegarLoop]: === Iteration 195 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:31:03,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:31:03,411 INFO L82 PathProgramCache]: Analyzing trace with hash 1395103368, now seen corresponding path program 195 times [2021-08-21 13:31:03,411 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:31:03,411 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1496036615] [2021-08-21 13:31:03,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:31:03,411 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:31:03,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:31:03,703 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:31:03,704 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:31:03,704 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1496036615] [2021-08-21 13:31:03,704 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1496036615] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:31:03,704 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:31:03,704 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-08-21 13:31:03,704 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1559504707] [2021-08-21 13:31:03,704 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-08-21 13:31:03,704 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:31:03,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-08-21 13:31:03,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-08-21 13:31:03,704 INFO L87 Difference]: Start difference. First operand 4087 states and 13813 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:31:05,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:31:05,573 INFO L93 Difference]: Finished difference Result 7114 states and 23916 transitions. [2021-08-21 13:31:05,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2021-08-21 13:31:05,573 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:31:05,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:31:05,588 INFO L225 Difference]: With dead ends: 7114 [2021-08-21 13:31:05,588 INFO L226 Difference]: Without dead ends: 7054 [2021-08-21 13:31:05,589 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 828 ImplicationChecksByTransitivity, 993.4ms TimeCoverageRelationStatistics Valid=300, Invalid=3006, Unknown=0, NotChecked=0, Total=3306 [2021-08-21 13:31:05,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7054 states. [2021-08-21 13:31:05,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7054 to 4085. [2021-08-21 13:31:05,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4085 states, 4084 states have (on average 3.3809990205680704) internal successors, (13808), 4084 states have internal predecessors, (13808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:31:05,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4085 states to 4085 states and 13808 transitions. [2021-08-21 13:31:05,663 INFO L78 Accepts]: Start accepts. Automaton has 4085 states and 13808 transitions. Word has length 39 [2021-08-21 13:31:05,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:31:05,663 INFO L470 AbstractCegarLoop]: Abstraction has 4085 states and 13808 transitions. [2021-08-21 13:31:05,663 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:31:05,663 INFO L276 IsEmpty]: Start isEmpty. Operand 4085 states and 13808 transitions. [2021-08-21 13:31:05,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:31:05,668 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:31:05,668 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:31:05,669 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable194 [2021-08-21 13:31:05,669 INFO L402 AbstractCegarLoop]: === Iteration 196 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:31:05,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:31:05,669 INFO L82 PathProgramCache]: Analyzing trace with hash -482300234, now seen corresponding path program 196 times [2021-08-21 13:31:05,669 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:31:05,669 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [129084563] [2021-08-21 13:31:05,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:31:05,669 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:31:05,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:31:05,984 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:31:05,985 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:31:05,985 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [129084563] [2021-08-21 13:31:05,985 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [129084563] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:31:05,985 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:31:05,985 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-08-21 13:31:05,985 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1059612756] [2021-08-21 13:31:05,985 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-08-21 13:31:05,985 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:31:05,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-08-21 13:31:05,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-08-21 13:31:05,985 INFO L87 Difference]: Start difference. First operand 4085 states and 13808 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:31:07,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:31:07,502 INFO L93 Difference]: Finished difference Result 6178 states and 20792 transitions. [2021-08-21 13:31:07,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-08-21 13:31:07,502 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:31:07,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:31:07,514 INFO L225 Difference]: With dead ends: 6178 [2021-08-21 13:31:07,514 INFO L226 Difference]: Without dead ends: 6087 [2021-08-21 13:31:07,515 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 572 ImplicationChecksByTransitivity, 834.3ms TimeCoverageRelationStatistics Valid=244, Invalid=2306, Unknown=0, NotChecked=0, Total=2550 [2021-08-21 13:31:07,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6087 states. [2021-08-21 13:31:07,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6087 to 4085. [2021-08-21 13:31:07,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4085 states, 4084 states have (on average 3.379529872673849) internal successors, (13802), 4084 states have internal predecessors, (13802), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:31:07,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4085 states to 4085 states and 13802 transitions. [2021-08-21 13:31:07,580 INFO L78 Accepts]: Start accepts. Automaton has 4085 states and 13802 transitions. Word has length 39 [2021-08-21 13:31:07,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:31:07,580 INFO L470 AbstractCegarLoop]: Abstraction has 4085 states and 13802 transitions. [2021-08-21 13:31:07,580 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:31:07,580 INFO L276 IsEmpty]: Start isEmpty. Operand 4085 states and 13802 transitions. [2021-08-21 13:31:07,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:31:07,585 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:31:07,585 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:31:07,585 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable195 [2021-08-21 13:31:07,586 INFO L402 AbstractCegarLoop]: === Iteration 197 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:31:07,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:31:07,586 INFO L82 PathProgramCache]: Analyzing trace with hash -1984782440, now seen corresponding path program 197 times [2021-08-21 13:31:07,586 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:31:07,586 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [528913312] [2021-08-21 13:31:07,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:31:07,586 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:31:07,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:31:07,901 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:31:07,901 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:31:07,901 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [528913312] [2021-08-21 13:31:07,901 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [528913312] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:31:07,901 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:31:07,902 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-08-21 13:31:07,902 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062395351] [2021-08-21 13:31:07,902 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-08-21 13:31:07,902 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:31:07,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-08-21 13:31:07,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-08-21 13:31:07,902 INFO L87 Difference]: Start difference. First operand 4085 states and 13802 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:31:09,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:31:09,619 INFO L93 Difference]: Finished difference Result 7266 states and 24407 transitions. [2021-08-21 13:31:09,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-08-21 13:31:09,619 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:31:09,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:31:09,632 INFO L225 Difference]: With dead ends: 7266 [2021-08-21 13:31:09,633 INFO L226 Difference]: Without dead ends: 7087 [2021-08-21 13:31:09,633 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 825 ImplicationChecksByTransitivity, 884.4ms TimeCoverageRelationStatistics Valid=290, Invalid=3016, Unknown=0, NotChecked=0, Total=3306 [2021-08-21 13:31:09,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7087 states. [2021-08-21 13:31:09,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7087 to 4266. [2021-08-21 13:31:09,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4266 states, 4265 states have (on average 3.381008206330598) internal successors, (14420), 4265 states have internal predecessors, (14420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:31:09,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4266 states to 4266 states and 14420 transitions. [2021-08-21 13:31:09,710 INFO L78 Accepts]: Start accepts. Automaton has 4266 states and 14420 transitions. Word has length 39 [2021-08-21 13:31:09,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:31:09,710 INFO L470 AbstractCegarLoop]: Abstraction has 4266 states and 14420 transitions. [2021-08-21 13:31:09,710 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:31:09,710 INFO L276 IsEmpty]: Start isEmpty. Operand 4266 states and 14420 transitions. [2021-08-21 13:31:09,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:31:09,715 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:31:09,715 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:31:09,715 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable196 [2021-08-21 13:31:09,715 INFO L402 AbstractCegarLoop]: === Iteration 198 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:31:09,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:31:09,716 INFO L82 PathProgramCache]: Analyzing trace with hash -1248064424, now seen corresponding path program 198 times [2021-08-21 13:31:09,716 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:31:09,716 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [709166430] [2021-08-21 13:31:09,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:31:09,716 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:31:09,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:31:09,902 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:31:09,903 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:31:09,903 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [709166430] [2021-08-21 13:31:09,903 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [709166430] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:31:09,903 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:31:09,903 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-08-21 13:31:09,903 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791648796] [2021-08-21 13:31:09,903 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-08-21 13:31:09,903 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:31:09,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-08-21 13:31:09,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-08-21 13:31:09,903 INFO L87 Difference]: Start difference. First operand 4266 states and 14420 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:31:11,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:31:11,079 INFO L93 Difference]: Finished difference Result 4817 states and 16072 transitions. [2021-08-21 13:31:11,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-08-21 13:31:11,080 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:31:11,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:31:11,089 INFO L225 Difference]: With dead ends: 4817 [2021-08-21 13:31:11,089 INFO L226 Difference]: Without dead ends: 4711 [2021-08-21 13:31:11,089 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 710 ImplicationChecksByTransitivity, 691.0ms TimeCoverageRelationStatistics Valid=272, Invalid=2698, Unknown=0, NotChecked=0, Total=2970 [2021-08-21 13:31:11,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4711 states. [2021-08-21 13:31:11,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4711 to 4288. [2021-08-21 13:31:11,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4288 states, 4287 states have (on average 3.3813855843247027) internal successors, (14496), 4287 states have internal predecessors, (14496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:31:11,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4288 states to 4288 states and 14496 transitions. [2021-08-21 13:31:11,147 INFO L78 Accepts]: Start accepts. Automaton has 4288 states and 14496 transitions. Word has length 39 [2021-08-21 13:31:11,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:31:11,147 INFO L470 AbstractCegarLoop]: Abstraction has 4288 states and 14496 transitions. [2021-08-21 13:31:11,147 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:31:11,147 INFO L276 IsEmpty]: Start isEmpty. Operand 4288 states and 14496 transitions. [2021-08-21 13:31:11,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:31:11,153 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:31:11,153 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:31:11,153 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable197 [2021-08-21 13:31:11,153 INFO L402 AbstractCegarLoop]: === Iteration 199 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:31:11,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:31:11,154 INFO L82 PathProgramCache]: Analyzing trace with hash 1552011972, now seen corresponding path program 199 times [2021-08-21 13:31:11,154 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:31:11,154 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [809504857] [2021-08-21 13:31:11,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:31:11,154 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:31:11,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:31:11,348 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:31:11,348 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:31:11,348 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [809504857] [2021-08-21 13:31:11,348 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [809504857] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:31:11,348 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:31:11,348 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-08-21 13:31:11,348 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138635401] [2021-08-21 13:31:11,348 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-08-21 13:31:11,348 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:31:11,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-08-21 13:31:11,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-08-21 13:31:11,349 INFO L87 Difference]: Start difference. First operand 4288 states and 14496 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:31:12,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:31:12,396 INFO L93 Difference]: Finished difference Result 4854 states and 16096 transitions. [2021-08-21 13:31:12,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-08-21 13:31:12,397 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:31:12,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:31:12,406 INFO L225 Difference]: With dead ends: 4854 [2021-08-21 13:31:12,406 INFO L226 Difference]: Without dead ends: 4790 [2021-08-21 13:31:12,407 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 753 ImplicationChecksByTransitivity, 684.3ms TimeCoverageRelationStatistics Valid=287, Invalid=2793, Unknown=0, NotChecked=0, Total=3080 [2021-08-21 13:31:12,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4790 states. [2021-08-21 13:31:12,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4790 to 4304. [2021-08-21 13:31:12,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4304 states, 4303 states have (on average 3.380897048570765) internal successors, (14548), 4303 states have internal predecessors, (14548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:31:12,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4304 states to 4304 states and 14548 transitions. [2021-08-21 13:31:12,469 INFO L78 Accepts]: Start accepts. Automaton has 4304 states and 14548 transitions. Word has length 39 [2021-08-21 13:31:12,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:31:12,469 INFO L470 AbstractCegarLoop]: Abstraction has 4304 states and 14548 transitions. [2021-08-21 13:31:12,469 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:31:12,469 INFO L276 IsEmpty]: Start isEmpty. Operand 4304 states and 14548 transitions. [2021-08-21 13:31:12,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:31:12,474 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:31:12,475 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:31:12,475 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable198 [2021-08-21 13:31:12,475 INFO L402 AbstractCegarLoop]: === Iteration 200 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:31:12,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:31:12,475 INFO L82 PathProgramCache]: Analyzing trace with hash -1824471754, now seen corresponding path program 200 times [2021-08-21 13:31:12,475 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:31:12,475 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1334189352] [2021-08-21 13:31:12,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:31:12,475 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:31:12,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:31:12,667 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:31:12,667 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:31:12,667 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1334189352] [2021-08-21 13:31:12,667 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1334189352] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:31:12,667 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:31:12,667 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-08-21 13:31:12,667 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48167821] [2021-08-21 13:31:12,668 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-08-21 13:31:12,668 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:31:12,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-08-21 13:31:12,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-08-21 13:31:12,668 INFO L87 Difference]: Start difference. First operand 4304 states and 14548 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:31:13,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:31:13,576 INFO L93 Difference]: Finished difference Result 4752 states and 15828 transitions. [2021-08-21 13:31:13,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-08-21 13:31:13,577 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:31:13,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:31:13,586 INFO L225 Difference]: With dead ends: 4752 [2021-08-21 13:31:13,586 INFO L226 Difference]: Without dead ends: 4709 [2021-08-21 13:31:13,587 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 421 ImplicationChecksByTransitivity, 540.9ms TimeCoverageRelationStatistics Valid=203, Invalid=1867, Unknown=0, NotChecked=0, Total=2070 [2021-08-21 13:31:13,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4709 states. [2021-08-21 13:31:13,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4709 to 4310. [2021-08-21 13:31:13,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4310 states, 4309 states have (on average 3.379206312369459) internal successors, (14561), 4309 states have internal predecessors, (14561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:31:13,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4310 states to 4310 states and 14561 transitions. [2021-08-21 13:31:13,649 INFO L78 Accepts]: Start accepts. Automaton has 4310 states and 14561 transitions. Word has length 39 [2021-08-21 13:31:13,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:31:13,649 INFO L470 AbstractCegarLoop]: Abstraction has 4310 states and 14561 transitions. [2021-08-21 13:31:13,649 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:31:13,649 INFO L276 IsEmpty]: Start isEmpty. Operand 4310 states and 14561 transitions. [2021-08-21 13:31:13,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:31:13,654 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:31:13,655 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:31:13,655 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable199 [2021-08-21 13:31:13,655 INFO L402 AbstractCegarLoop]: === Iteration 201 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:31:13,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:31:13,655 INFO L82 PathProgramCache]: Analyzing trace with hash -1804323020, now seen corresponding path program 201 times [2021-08-21 13:31:13,655 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:31:13,655 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1695937250] [2021-08-21 13:31:13,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:31:13,655 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:31:13,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:31:13,935 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:31:13,935 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:31:13,935 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1695937250] [2021-08-21 13:31:13,935 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1695937250] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:31:13,935 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:31:13,935 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-08-21 13:31:13,935 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553366029] [2021-08-21 13:31:13,935 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-08-21 13:31:13,935 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:31:13,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-08-21 13:31:13,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-08-21 13:31:13,936 INFO L87 Difference]: Start difference. First operand 4310 states and 14561 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:31:15,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:31:15,204 INFO L93 Difference]: Finished difference Result 4723 states and 15772 transitions. [2021-08-21 13:31:15,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-08-21 13:31:15,205 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:31:15,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:31:15,215 INFO L225 Difference]: With dead ends: 4723 [2021-08-21 13:31:15,215 INFO L226 Difference]: Without dead ends: 4680 [2021-08-21 13:31:15,215 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 511 ImplicationChecksByTransitivity, 830.5ms TimeCoverageRelationStatistics Valid=230, Invalid=2122, Unknown=0, NotChecked=0, Total=2352 [2021-08-21 13:31:15,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4680 states. [2021-08-21 13:31:15,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4680 to 4306. [2021-08-21 13:31:15,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4306 states, 4305 states have (on average 3.3800232288037164) internal successors, (14551), 4305 states have internal predecessors, (14551), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:31:15,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4306 states to 4306 states and 14551 transitions. [2021-08-21 13:31:15,285 INFO L78 Accepts]: Start accepts. Automaton has 4306 states and 14551 transitions. Word has length 39 [2021-08-21 13:31:15,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:31:15,285 INFO L470 AbstractCegarLoop]: Abstraction has 4306 states and 14551 transitions. [2021-08-21 13:31:15,285 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:31:15,285 INFO L276 IsEmpty]: Start isEmpty. Operand 4306 states and 14551 transitions. [2021-08-21 13:31:15,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:31:15,291 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:31:15,291 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:31:15,292 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable200 [2021-08-21 13:31:15,292 INFO L402 AbstractCegarLoop]: === Iteration 202 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:31:15,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:31:15,292 INFO L82 PathProgramCache]: Analyzing trace with hash -651819532, now seen corresponding path program 202 times [2021-08-21 13:31:15,292 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:31:15,292 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [598365847] [2021-08-21 13:31:15,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:31:15,292 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:31:15,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:31:15,605 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:31:15,605 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:31:15,605 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [598365847] [2021-08-21 13:31:15,605 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [598365847] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:31:15,606 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:31:15,606 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-08-21 13:31:15,606 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934800433] [2021-08-21 13:31:15,606 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-08-21 13:31:15,606 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:31:15,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-08-21 13:31:15,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-08-21 13:31:15,606 INFO L87 Difference]: Start difference. First operand 4306 states and 14551 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:31:16,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:31:16,737 INFO L93 Difference]: Finished difference Result 4730 states and 15787 transitions. [2021-08-21 13:31:16,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-08-21 13:31:16,738 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:31:16,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:31:16,748 INFO L225 Difference]: With dead ends: 4730 [2021-08-21 13:31:16,748 INFO L226 Difference]: Without dead ends: 4670 [2021-08-21 13:31:16,749 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 453 ImplicationChecksByTransitivity, 757.5ms TimeCoverageRelationStatistics Valid=214, Invalid=1948, Unknown=0, NotChecked=0, Total=2162 [2021-08-21 13:31:16,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4670 states. [2021-08-21 13:31:16,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4670 to 4304. [2021-08-21 13:31:16,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4304 states, 4303 states have (on average 3.380432256565187) internal successors, (14546), 4303 states have internal predecessors, (14546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:31:16,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4304 states to 4304 states and 14546 transitions. [2021-08-21 13:31:16,823 INFO L78 Accepts]: Start accepts. Automaton has 4304 states and 14546 transitions. Word has length 39 [2021-08-21 13:31:16,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:31:16,823 INFO L470 AbstractCegarLoop]: Abstraction has 4304 states and 14546 transitions. [2021-08-21 13:31:16,823 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:31:16,823 INFO L276 IsEmpty]: Start isEmpty. Operand 4304 states and 14546 transitions. [2021-08-21 13:31:16,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:31:16,830 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:31:16,830 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:31:16,830 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable201 [2021-08-21 13:31:16,830 INFO L402 AbstractCegarLoop]: === Iteration 203 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:31:16,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:31:16,830 INFO L82 PathProgramCache]: Analyzing trace with hash 1563581222, now seen corresponding path program 203 times [2021-08-21 13:31:16,830 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:31:16,830 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [831823168] [2021-08-21 13:31:16,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:31:16,831 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:31:16,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:31:17,095 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:31:17,095 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:31:17,095 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [831823168] [2021-08-21 13:31:17,095 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [831823168] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:31:17,095 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:31:17,095 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-08-21 13:31:17,095 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931921609] [2021-08-21 13:31:17,096 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-08-21 13:31:17,096 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:31:17,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-08-21 13:31:17,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2021-08-21 13:31:17,096 INFO L87 Difference]: Start difference. First operand 4304 states and 14546 transitions. Second operand has 15 states, 15 states have (on average 2.6) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:31:18,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:31:18,015 INFO L93 Difference]: Finished difference Result 4698 states and 15727 transitions. [2021-08-21 13:31:18,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-08-21 13:31:18,016 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.6) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:31:18,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:31:18,025 INFO L225 Difference]: With dead ends: 4698 [2021-08-21 13:31:18,025 INFO L226 Difference]: Without dead ends: 4622 [2021-08-21 13:31:18,026 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 342 ImplicationChecksByTransitivity, 575.2ms TimeCoverageRelationStatistics Valid=177, Invalid=1545, Unknown=0, NotChecked=0, Total=1722 [2021-08-21 13:31:18,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4622 states. [2021-08-21 13:31:18,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4622 to 4312. [2021-08-21 13:31:18,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4312 states, 4311 states have (on average 3.3778705636743216) internal successors, (14562), 4311 states have internal predecessors, (14562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:31:18,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4312 states to 4312 states and 14562 transitions. [2021-08-21 13:31:18,120 INFO L78 Accepts]: Start accepts. Automaton has 4312 states and 14562 transitions. Word has length 39 [2021-08-21 13:31:18,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:31:18,120 INFO L470 AbstractCegarLoop]: Abstraction has 4312 states and 14562 transitions. [2021-08-21 13:31:18,120 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.6) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:31:18,120 INFO L276 IsEmpty]: Start isEmpty. Operand 4312 states and 14562 transitions. [2021-08-21 13:31:18,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:31:18,127 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:31:18,128 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:31:18,128 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable202 [2021-08-21 13:31:18,128 INFO L402 AbstractCegarLoop]: === Iteration 204 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:31:18,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:31:18,128 INFO L82 PathProgramCache]: Analyzing trace with hash 545527610, now seen corresponding path program 204 times [2021-08-21 13:31:18,128 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:31:18,128 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [802756186] [2021-08-21 13:31:18,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:31:18,128 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:31:18,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:31:18,320 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:31:18,320 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:31:18,321 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [802756186] [2021-08-21 13:31:18,321 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [802756186] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:31:18,321 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:31:18,321 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-08-21 13:31:18,321 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [579364188] [2021-08-21 13:31:18,321 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-08-21 13:31:18,321 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:31:18,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-08-21 13:31:18,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-08-21 13:31:18,321 INFO L87 Difference]: Start difference. First operand 4312 states and 14562 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:31:19,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:31:19,361 INFO L93 Difference]: Finished difference Result 4680 states and 15673 transitions. [2021-08-21 13:31:19,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-08-21 13:31:19,361 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:31:19,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:31:19,370 INFO L225 Difference]: With dead ends: 4680 [2021-08-21 13:31:19,371 INFO L226 Difference]: Without dead ends: 4610 [2021-08-21 13:31:19,371 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 397 ImplicationChecksByTransitivity, 621.0ms TimeCoverageRelationStatistics Valid=193, Invalid=1787, Unknown=0, NotChecked=0, Total=1980 [2021-08-21 13:31:19,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4610 states. [2021-08-21 13:31:19,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4610 to 4300. [2021-08-21 13:31:19,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4300 states, 4299 states have (on average 3.3807862293556643) internal successors, (14534), 4299 states have internal predecessors, (14534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:31:19,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4300 states to 4300 states and 14534 transitions. [2021-08-21 13:31:19,428 INFO L78 Accepts]: Start accepts. Automaton has 4300 states and 14534 transitions. Word has length 39 [2021-08-21 13:31:19,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:31:19,428 INFO L470 AbstractCegarLoop]: Abstraction has 4300 states and 14534 transitions. [2021-08-21 13:31:19,428 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:31:19,428 INFO L276 IsEmpty]: Start isEmpty. Operand 4300 states and 14534 transitions. [2021-08-21 13:31:19,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:31:19,434 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:31:19,434 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:31:19,434 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable203 [2021-08-21 13:31:19,434 INFO L402 AbstractCegarLoop]: === Iteration 205 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:31:19,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:31:19,434 INFO L82 PathProgramCache]: Analyzing trace with hash 1391711290, now seen corresponding path program 205 times [2021-08-21 13:31:19,434 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:31:19,434 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1478512475] [2021-08-21 13:31:19,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:31:19,434 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:31:19,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:31:19,713 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:31:19,713 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:31:19,713 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1478512475] [2021-08-21 13:31:19,713 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1478512475] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:31:19,713 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:31:19,713 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-08-21 13:31:19,714 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [275377041] [2021-08-21 13:31:19,714 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-08-21 13:31:19,714 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:31:19,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-08-21 13:31:19,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-08-21 13:31:19,714 INFO L87 Difference]: Start difference. First operand 4300 states and 14534 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:31:21,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:31:21,790 INFO L93 Difference]: Finished difference Result 6858 states and 23172 transitions. [2021-08-21 13:31:21,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2021-08-21 13:31:21,790 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:31:21,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:31:21,805 INFO L225 Difference]: With dead ends: 6858 [2021-08-21 13:31:21,806 INFO L226 Difference]: Without dead ends: 6815 [2021-08-21 13:31:21,806 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1182 ImplicationChecksByTransitivity, 1218.8ms TimeCoverageRelationStatistics Valid=380, Invalid=3910, Unknown=0, NotChecked=0, Total=4290 [2021-08-21 13:31:21,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6815 states. [2021-08-21 13:31:21,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6815 to 4326. [2021-08-21 13:31:21,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4326 states, 4325 states have (on average 3.3796531791907514) internal successors, (14617), 4325 states have internal predecessors, (14617), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:31:21,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4326 states to 4326 states and 14617 transitions. [2021-08-21 13:31:21,880 INFO L78 Accepts]: Start accepts. Automaton has 4326 states and 14617 transitions. Word has length 39 [2021-08-21 13:31:21,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:31:21,880 INFO L470 AbstractCegarLoop]: Abstraction has 4326 states and 14617 transitions. [2021-08-21 13:31:21,880 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:31:21,880 INFO L276 IsEmpty]: Start isEmpty. Operand 4326 states and 14617 transitions. [2021-08-21 13:31:21,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:31:21,885 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:31:21,885 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:31:21,885 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable204 [2021-08-21 13:31:21,885 INFO L402 AbstractCegarLoop]: === Iteration 206 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:31:21,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:31:21,886 INFO L82 PathProgramCache]: Analyzing trace with hash -388887012, now seen corresponding path program 206 times [2021-08-21 13:31:21,886 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:31:21,886 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1554689498] [2021-08-21 13:31:21,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:31:21,886 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:31:21,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:31:22,081 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:31:22,081 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:31:22,081 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1554689498] [2021-08-21 13:31:22,081 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1554689498] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:31:22,081 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:31:22,081 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-08-21 13:31:22,081 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718783379] [2021-08-21 13:31:22,081 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-08-21 13:31:22,081 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:31:22,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-08-21 13:31:22,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-08-21 13:31:22,081 INFO L87 Difference]: Start difference. First operand 4326 states and 14617 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:31:23,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:31:23,827 INFO L93 Difference]: Finished difference Result 7715 states and 26114 transitions. [2021-08-21 13:31:23,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2021-08-21 13:31:23,827 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:31:23,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:31:23,844 INFO L225 Difference]: With dead ends: 7715 [2021-08-21 13:31:23,844 INFO L226 Difference]: Without dead ends: 7663 [2021-08-21 13:31:23,845 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1544 ImplicationChecksByTransitivity, 980.1ms TimeCoverageRelationStatistics Valid=429, Invalid=4827, Unknown=0, NotChecked=0, Total=5256 [2021-08-21 13:31:23,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7663 states. [2021-08-21 13:31:23,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7663 to 4300. [2021-08-21 13:31:23,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4300 states, 4299 states have (on average 3.3807862293556643) internal successors, (14534), 4299 states have internal predecessors, (14534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:31:23,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4300 states to 4300 states and 14534 transitions. [2021-08-21 13:31:23,930 INFO L78 Accepts]: Start accepts. Automaton has 4300 states and 14534 transitions. Word has length 39 [2021-08-21 13:31:23,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:31:23,930 INFO L470 AbstractCegarLoop]: Abstraction has 4300 states and 14534 transitions. [2021-08-21 13:31:23,930 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:31:23,930 INFO L276 IsEmpty]: Start isEmpty. Operand 4300 states and 14534 transitions. [2021-08-21 13:31:23,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:31:23,936 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:31:23,936 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:31:23,936 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable205 [2021-08-21 13:31:23,936 INFO L402 AbstractCegarLoop]: === Iteration 207 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:31:23,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:31:23,937 INFO L82 PathProgramCache]: Analyzing trace with hash -1984772436, now seen corresponding path program 207 times [2021-08-21 13:31:23,937 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:31:23,937 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [95782103] [2021-08-21 13:31:23,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:31:23,937 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:31:23,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:31:24,122 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:31:24,122 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:31:24,122 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [95782103] [2021-08-21 13:31:24,122 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [95782103] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:31:24,123 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:31:24,123 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-08-21 13:31:24,123 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170346088] [2021-08-21 13:31:24,123 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-08-21 13:31:24,123 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:31:24,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-08-21 13:31:24,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-08-21 13:31:24,123 INFO L87 Difference]: Start difference. First operand 4300 states and 14534 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:31:25,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:31:25,509 INFO L93 Difference]: Finished difference Result 6351 states and 21238 transitions. [2021-08-21 13:31:25,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-08-21 13:31:25,510 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:31:25,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:31:25,574 INFO L225 Difference]: With dead ends: 6351 [2021-08-21 13:31:25,574 INFO L226 Difference]: Without dead ends: 6296 [2021-08-21 13:31:25,574 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 512 ImplicationChecksByTransitivity, 703.6ms TimeCoverageRelationStatistics Valid=232, Invalid=2120, Unknown=0, NotChecked=0, Total=2352 [2021-08-21 13:31:25,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6296 states. [2021-08-21 13:31:25,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6296 to 4320. [2021-08-21 13:31:25,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4320 states, 4319 states have (on average 3.3804121324380643) internal successors, (14600), 4319 states have internal predecessors, (14600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:31:25,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4320 states to 4320 states and 14600 transitions. [2021-08-21 13:31:25,640 INFO L78 Accepts]: Start accepts. Automaton has 4320 states and 14600 transitions. Word has length 39 [2021-08-21 13:31:25,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:31:25,640 INFO L470 AbstractCegarLoop]: Abstraction has 4320 states and 14600 transitions. [2021-08-21 13:31:25,640 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:31:25,640 INFO L276 IsEmpty]: Start isEmpty. Operand 4320 states and 14600 transitions. [2021-08-21 13:31:25,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:31:25,646 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:31:25,646 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:31:25,646 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable206 [2021-08-21 13:31:25,646 INFO L402 AbstractCegarLoop]: === Iteration 208 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:31:25,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:31:25,646 INFO L82 PathProgramCache]: Analyzing trace with hash -812120214, now seen corresponding path program 208 times [2021-08-21 13:31:25,646 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:31:25,646 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1906264877] [2021-08-21 13:31:25,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:31:25,646 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:31:25,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:31:25,973 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:31:25,973 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:31:25,973 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1906264877] [2021-08-21 13:31:25,973 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1906264877] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:31:25,973 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:31:25,973 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-08-21 13:31:25,973 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885411078] [2021-08-21 13:31:25,973 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-08-21 13:31:25,973 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:31:25,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-08-21 13:31:25,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-08-21 13:31:25,974 INFO L87 Difference]: Start difference. First operand 4320 states and 14600 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:31:27,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:31:27,758 INFO L93 Difference]: Finished difference Result 7052 states and 23686 transitions. [2021-08-21 13:31:27,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2021-08-21 13:31:27,758 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:31:27,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:31:27,774 INFO L225 Difference]: With dead ends: 7052 [2021-08-21 13:31:27,774 INFO L226 Difference]: Without dead ends: 6992 [2021-08-21 13:31:27,775 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 830 ImplicationChecksByTransitivity, 1007.4ms TimeCoverageRelationStatistics Valid=301, Invalid=3005, Unknown=0, NotChecked=0, Total=3306 [2021-08-21 13:31:27,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6992 states. [2021-08-21 13:31:27,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6992 to 4318. [2021-08-21 13:31:27,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4318 states, 4317 states have (on average 3.3808200138985405) internal successors, (14595), 4317 states have internal predecessors, (14595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:31:27,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4318 states to 4318 states and 14595 transitions. [2021-08-21 13:31:27,857 INFO L78 Accepts]: Start accepts. Automaton has 4318 states and 14595 transitions. Word has length 39 [2021-08-21 13:31:27,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:31:27,857 INFO L470 AbstractCegarLoop]: Abstraction has 4318 states and 14595 transitions. [2021-08-21 13:31:27,857 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:31:27,857 INFO L276 IsEmpty]: Start isEmpty. Operand 4318 states and 14595 transitions. [2021-08-21 13:31:27,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:31:27,863 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:31:27,863 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:31:27,863 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable207 [2021-08-21 13:31:27,863 INFO L402 AbstractCegarLoop]: === Iteration 209 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:31:27,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:31:27,864 INFO L82 PathProgramCache]: Analyzing trace with hash 1605443480, now seen corresponding path program 209 times [2021-08-21 13:31:27,864 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:31:27,864 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [825565852] [2021-08-21 13:31:27,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:31:27,864 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:31:27,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:31:28,177 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:31:28,177 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:31:28,178 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [825565852] [2021-08-21 13:31:28,178 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [825565852] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:31:28,178 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:31:28,178 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-08-21 13:31:28,178 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803370092] [2021-08-21 13:31:28,178 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-08-21 13:31:28,178 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:31:28,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-08-21 13:31:28,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-08-21 13:31:28,178 INFO L87 Difference]: Start difference. First operand 4318 states and 14595 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:31:29,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:31:29,528 INFO L93 Difference]: Finished difference Result 6272 states and 21064 transitions. [2021-08-21 13:31:29,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-08-21 13:31:29,528 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:31:29,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:31:29,541 INFO L225 Difference]: With dead ends: 6272 [2021-08-21 13:31:29,541 INFO L226 Difference]: Without dead ends: 6181 [2021-08-21 13:31:29,541 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 447 ImplicationChecksByTransitivity, 755.3ms TimeCoverageRelationStatistics Valid=209, Invalid=1953, Unknown=0, NotChecked=0, Total=2162 [2021-08-21 13:31:29,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6181 states. [2021-08-21 13:31:29,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6181 to 4318. [2021-08-21 13:31:29,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4318 states, 4317 states have (on average 3.3794301598332175) internal successors, (14589), 4317 states have internal predecessors, (14589), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:31:29,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4318 states to 4318 states and 14589 transitions. [2021-08-21 13:31:29,611 INFO L78 Accepts]: Start accepts. Automaton has 4318 states and 14589 transitions. Word has length 39 [2021-08-21 13:31:29,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:31:29,611 INFO L470 AbstractCegarLoop]: Abstraction has 4318 states and 14589 transitions. [2021-08-21 13:31:29,611 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:31:29,611 INFO L276 IsEmpty]: Start isEmpty. Operand 4318 states and 14589 transitions. [2021-08-21 13:31:29,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:31:29,617 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:31:29,617 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:31:29,617 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable208 [2021-08-21 13:31:29,617 INFO L402 AbstractCegarLoop]: === Iteration 210 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:31:29,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:31:29,617 INFO L82 PathProgramCache]: Analyzing trace with hash 102961274, now seen corresponding path program 210 times [2021-08-21 13:31:29,617 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:31:29,617 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [162928940] [2021-08-21 13:31:29,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:31:29,618 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:31:29,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:31:29,896 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:31:29,896 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:31:29,896 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [162928940] [2021-08-21 13:31:29,897 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [162928940] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:31:29,897 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:31:29,897 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-08-21 13:31:29,897 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796359773] [2021-08-21 13:31:29,897 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-08-21 13:31:29,897 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:31:29,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-08-21 13:31:29,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-08-21 13:31:29,897 INFO L87 Difference]: Start difference. First operand 4318 states and 14589 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:31:31,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:31:31,608 INFO L93 Difference]: Finished difference Result 7142 states and 24051 transitions. [2021-08-21 13:31:31,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2021-08-21 13:31:31,608 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:31:31,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:31:31,622 INFO L225 Difference]: With dead ends: 7142 [2021-08-21 13:31:31,622 INFO L226 Difference]: Without dead ends: 7042 [2021-08-21 13:31:31,623 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 870 ImplicationChecksByTransitivity, 900.4ms TimeCoverageRelationStatistics Valid=303, Invalid=3119, Unknown=0, NotChecked=0, Total=3422 [2021-08-21 13:31:31,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7042 states. [2021-08-21 13:31:31,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7042 to 4300. [2021-08-21 13:31:31,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4300 states, 4299 states have (on average 3.3793905559432424) internal successors, (14528), 4299 states have internal predecessors, (14528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:31:31,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4300 states to 4300 states and 14528 transitions. [2021-08-21 13:31:31,702 INFO L78 Accepts]: Start accepts. Automaton has 4300 states and 14528 transitions. Word has length 39 [2021-08-21 13:31:31,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:31:31,702 INFO L470 AbstractCegarLoop]: Abstraction has 4300 states and 14528 transitions. [2021-08-21 13:31:31,702 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:31:31,702 INFO L276 IsEmpty]: Start isEmpty. Operand 4300 states and 14528 transitions. [2021-08-21 13:31:31,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:31:31,708 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:31:31,708 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:31:31,708 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable209 [2021-08-21 13:31:31,708 INFO L402 AbstractCegarLoop]: === Iteration 211 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:31:31,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:31:31,708 INFO L82 PathProgramCache]: Analyzing trace with hash -133663722, now seen corresponding path program 211 times [2021-08-21 13:31:31,708 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:31:31,708 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1497173361] [2021-08-21 13:31:31,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:31:31,709 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:31:31,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:31:31,897 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:31:31,897 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:31:31,897 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1497173361] [2021-08-21 13:31:31,897 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1497173361] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:31:31,897 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:31:31,897 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-08-21 13:31:31,897 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630278065] [2021-08-21 13:31:31,897 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-08-21 13:31:31,898 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:31:31,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-08-21 13:31:31,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2021-08-21 13:31:31,898 INFO L87 Difference]: Start difference. First operand 4300 states and 14528 transitions. Second operand has 15 states, 15 states have (on average 2.6) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:31:32,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:31:32,555 INFO L93 Difference]: Finished difference Result 4629 states and 15530 transitions. [2021-08-21 13:31:32,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-08-21 13:31:32,555 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.6) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:31:32,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:31:32,565 INFO L225 Difference]: With dead ends: 4629 [2021-08-21 13:31:32,565 INFO L226 Difference]: Without dead ends: 4553 [2021-08-21 13:31:32,566 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 291 ImplicationChecksByTransitivity, 400.7ms TimeCoverageRelationStatistics Valid=162, Invalid=1398, Unknown=0, NotChecked=0, Total=1560 [2021-08-21 13:31:32,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4553 states. [2021-08-21 13:31:32,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4553 to 4332. [2021-08-21 13:31:32,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4332 states, 4331 states have (on average 3.3747402447471715) internal successors, (14616), 4331 states have internal predecessors, (14616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:31:32,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4332 states to 4332 states and 14616 transitions. [2021-08-21 13:31:32,626 INFO L78 Accepts]: Start accepts. Automaton has 4332 states and 14616 transitions. Word has length 39 [2021-08-21 13:31:32,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:31:32,626 INFO L470 AbstractCegarLoop]: Abstraction has 4332 states and 14616 transitions. [2021-08-21 13:31:32,627 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.6) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:31:32,627 INFO L276 IsEmpty]: Start isEmpty. Operand 4332 states and 14616 transitions. [2021-08-21 13:31:32,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:31:32,632 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:31:32,633 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:31:32,633 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable210 [2021-08-21 13:31:32,633 INFO L402 AbstractCegarLoop]: === Iteration 212 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:31:32,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:31:32,633 INFO L82 PathProgramCache]: Analyzing trace with hash -1151717334, now seen corresponding path program 212 times [2021-08-21 13:31:32,633 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:31:32,633 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2014407501] [2021-08-21 13:31:32,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:31:32,633 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:31:32,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:31:32,876 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:31:32,876 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:31:32,876 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2014407501] [2021-08-21 13:31:32,876 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2014407501] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:31:32,876 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:31:32,876 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-08-21 13:31:32,876 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620856589] [2021-08-21 13:31:32,876 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-08-21 13:31:32,877 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:31:32,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-08-21 13:31:32,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-08-21 13:31:32,877 INFO L87 Difference]: Start difference. First operand 4332 states and 14616 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:31:33,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:31:33,620 INFO L93 Difference]: Finished difference Result 4611 states and 15476 transitions. [2021-08-21 13:31:33,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-08-21 13:31:33,620 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:31:33,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:31:33,629 INFO L225 Difference]: With dead ends: 4611 [2021-08-21 13:31:33,629 INFO L226 Difference]: Without dead ends: 4545 [2021-08-21 13:31:33,630 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 341 ImplicationChecksByTransitivity, 458.8ms TimeCoverageRelationStatistics Valid=178, Invalid=1628, Unknown=0, NotChecked=0, Total=1806 [2021-08-21 13:31:33,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4545 states. [2021-08-21 13:31:33,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4545 to 4324. [2021-08-21 13:31:33,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4324 states, 4323 states have (on average 3.375433726578765) internal successors, (14592), 4323 states have internal predecessors, (14592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:31:33,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4324 states to 4324 states and 14592 transitions. [2021-08-21 13:31:33,703 INFO L78 Accepts]: Start accepts. Automaton has 4324 states and 14592 transitions. Word has length 39 [2021-08-21 13:31:33,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:31:33,703 INFO L470 AbstractCegarLoop]: Abstraction has 4324 states and 14592 transitions. [2021-08-21 13:31:33,703 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:31:33,703 INFO L276 IsEmpty]: Start isEmpty. Operand 4324 states and 14592 transitions. [2021-08-21 13:31:33,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:31:33,709 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:31:33,709 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:31:33,709 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable211 [2021-08-21 13:31:33,709 INFO L402 AbstractCegarLoop]: === Iteration 213 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:31:33,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:31:33,709 INFO L82 PathProgramCache]: Analyzing trace with hash -1433982988, now seen corresponding path program 213 times [2021-08-21 13:31:33,709 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:31:33,709 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1309992570] [2021-08-21 13:31:33,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:31:33,709 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:31:33,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:31:33,910 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:31:33,910 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:31:33,910 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1309992570] [2021-08-21 13:31:33,910 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1309992570] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:31:33,910 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:31:33,910 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-08-21 13:31:33,910 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149482893] [2021-08-21 13:31:33,910 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-08-21 13:31:33,910 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:31:33,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-08-21 13:31:33,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-08-21 13:31:33,911 INFO L87 Difference]: Start difference. First operand 4324 states and 14592 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:31:34,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:31:34,621 INFO L93 Difference]: Finished difference Result 4632 states and 15529 transitions. [2021-08-21 13:31:34,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-08-21 13:31:34,621 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:31:34,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:31:34,629 INFO L225 Difference]: With dead ends: 4632 [2021-08-21 13:31:34,630 INFO L226 Difference]: Without dead ends: 4470 [2021-08-21 13:31:34,630 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 340 ImplicationChecksByTransitivity, 452.2ms TimeCoverageRelationStatistics Valid=178, Invalid=1628, Unknown=0, NotChecked=0, Total=1806 [2021-08-21 13:31:34,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4470 states. [2021-08-21 13:31:34,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4470 to 4256. [2021-08-21 13:31:34,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4256 states, 4255 states have (on average 3.38331374853114) internal successors, (14396), 4255 states have internal predecessors, (14396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:31:34,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4256 states to 4256 states and 14396 transitions. [2021-08-21 13:31:34,685 INFO L78 Accepts]: Start accepts. Automaton has 4256 states and 14396 transitions. Word has length 39 [2021-08-21 13:31:34,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:31:34,685 INFO L470 AbstractCegarLoop]: Abstraction has 4256 states and 14396 transitions. [2021-08-21 13:31:34,685 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:31:34,685 INFO L276 IsEmpty]: Start isEmpty. Operand 4256 states and 14396 transitions. [2021-08-21 13:31:34,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:31:34,690 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:31:34,690 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:31:34,690 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable212 [2021-08-21 13:31:34,690 INFO L402 AbstractCegarLoop]: === Iteration 214 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:31:34,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:31:34,690 INFO L82 PathProgramCache]: Analyzing trace with hash 755420440, now seen corresponding path program 214 times [2021-08-21 13:31:34,690 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:31:34,691 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1404518545] [2021-08-21 13:31:34,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:31:34,691 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:31:34,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:31:34,909 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:31:34,909 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:31:34,909 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1404518545] [2021-08-21 13:31:34,909 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1404518545] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:31:34,909 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:31:34,909 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-08-21 13:31:34,909 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [334349203] [2021-08-21 13:31:34,909 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-08-21 13:31:34,910 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:31:34,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-08-21 13:31:34,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-08-21 13:31:34,910 INFO L87 Difference]: Start difference. First operand 4256 states and 14396 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:31:36,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:31:36,148 INFO L93 Difference]: Finished difference Result 5381 states and 18242 transitions. [2021-08-21 13:31:36,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-08-21 13:31:36,149 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:31:36,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:31:36,160 INFO L225 Difference]: With dead ends: 5381 [2021-08-21 13:31:36,160 INFO L226 Difference]: Without dead ends: 5314 [2021-08-21 13:31:36,161 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 913 ImplicationChecksByTransitivity, 797.6ms TimeCoverageRelationStatistics Valid=340, Invalid=3200, Unknown=0, NotChecked=0, Total=3540 [2021-08-21 13:31:36,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5314 states. [2021-08-21 13:31:36,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5314 to 4394. [2021-08-21 13:31:36,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4394 states, 4393 states have (on average 3.3808331436376053) internal successors, (14852), 4393 states have internal predecessors, (14852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:31:36,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4394 states to 4394 states and 14852 transitions. [2021-08-21 13:31:36,237 INFO L78 Accepts]: Start accepts. Automaton has 4394 states and 14852 transitions. Word has length 39 [2021-08-21 13:31:36,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:31:36,241 INFO L470 AbstractCegarLoop]: Abstraction has 4394 states and 14852 transitions. [2021-08-21 13:31:36,241 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:31:36,241 INFO L276 IsEmpty]: Start isEmpty. Operand 4394 states and 14852 transitions. [2021-08-21 13:31:36,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:31:36,248 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:31:36,248 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:31:36,248 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable213 [2021-08-21 13:31:36,248 INFO L402 AbstractCegarLoop]: === Iteration 215 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:31:36,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:31:36,248 INFO L82 PathProgramCache]: Analyzing trace with hash -964195530, now seen corresponding path program 215 times [2021-08-21 13:31:36,248 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:31:36,248 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [225346459] [2021-08-21 13:31:36,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:31:36,249 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:31:36,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:31:36,450 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:31:36,451 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:31:36,451 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [225346459] [2021-08-21 13:31:36,451 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [225346459] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:31:36,451 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:31:36,451 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-08-21 13:31:36,451 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [426051411] [2021-08-21 13:31:36,451 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-08-21 13:31:36,451 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:31:36,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-08-21 13:31:36,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-08-21 13:31:36,451 INFO L87 Difference]: Start difference. First operand 4394 states and 14852 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:31:38,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:31:38,151 INFO L93 Difference]: Finished difference Result 5477 states and 18503 transitions. [2021-08-21 13:31:38,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2021-08-21 13:31:38,151 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:31:38,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:31:38,163 INFO L225 Difference]: With dead ends: 5477 [2021-08-21 13:31:38,163 INFO L226 Difference]: Without dead ends: 5434 [2021-08-21 13:31:38,164 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1586 ImplicationChecksByTransitivity, 1120.9ms TimeCoverageRelationStatistics Valid=476, Invalid=4926, Unknown=0, NotChecked=0, Total=5402 [2021-08-21 13:31:38,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5434 states. [2021-08-21 13:31:38,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5434 to 4400. [2021-08-21 13:31:38,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4400 states, 4399 states have (on average 3.3791770857012957) internal successors, (14865), 4399 states have internal predecessors, (14865), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:31:38,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4400 states to 4400 states and 14865 transitions. [2021-08-21 13:31:38,235 INFO L78 Accepts]: Start accepts. Automaton has 4400 states and 14865 transitions. Word has length 39 [2021-08-21 13:31:38,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:31:38,236 INFO L470 AbstractCegarLoop]: Abstraction has 4400 states and 14865 transitions. [2021-08-21 13:31:38,236 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:31:38,236 INFO L276 IsEmpty]: Start isEmpty. Operand 4400 states and 14865 transitions. [2021-08-21 13:31:38,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:31:38,242 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:31:38,242 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:31:38,242 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable214 [2021-08-21 13:31:38,242 INFO L402 AbstractCegarLoop]: === Iteration 216 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:31:38,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:31:38,242 INFO L82 PathProgramCache]: Analyzing trace with hash 1550173464, now seen corresponding path program 216 times [2021-08-21 13:31:38,242 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:31:38,242 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2001658537] [2021-08-21 13:31:38,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:31:38,242 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:31:38,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:31:38,429 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:31:38,429 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:31:38,429 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2001658537] [2021-08-21 13:31:38,430 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2001658537] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:31:38,430 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:31:38,430 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-08-21 13:31:38,430 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501148040] [2021-08-21 13:31:38,430 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-08-21 13:31:38,430 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:31:38,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-08-21 13:31:38,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-08-21 13:31:38,430 INFO L87 Difference]: Start difference. First operand 4400 states and 14865 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:31:40,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:31:40,062 INFO L93 Difference]: Finished difference Result 5408 states and 18323 transitions. [2021-08-21 13:31:40,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2021-08-21 13:31:40,062 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:31:40,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:31:40,074 INFO L225 Difference]: With dead ends: 5408 [2021-08-21 13:31:40,074 INFO L226 Difference]: Without dead ends: 5344 [2021-08-21 13:31:40,075 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1528 ImplicationChecksByTransitivity, 1072.2ms TimeCoverageRelationStatistics Valid=469, Invalid=4787, Unknown=0, NotChecked=0, Total=5256 [2021-08-21 13:31:40,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5344 states. [2021-08-21 13:31:40,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5344 to 4382. [2021-08-21 13:31:40,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4382 states, 4381 states have (on average 3.381419767176444) internal successors, (14814), 4381 states have internal predecessors, (14814), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:31:40,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4382 states to 4382 states and 14814 transitions. [2021-08-21 13:31:40,140 INFO L78 Accepts]: Start accepts. Automaton has 4382 states and 14814 transitions. Word has length 39 [2021-08-21 13:31:40,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:31:40,140 INFO L470 AbstractCegarLoop]: Abstraction has 4382 states and 14814 transitions. [2021-08-21 13:31:40,141 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:31:40,141 INFO L276 IsEmpty]: Start isEmpty. Operand 4382 states and 14814 transitions. [2021-08-21 13:31:40,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:31:40,146 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:31:40,146 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:31:40,146 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable215 [2021-08-21 13:31:40,147 INFO L402 AbstractCegarLoop]: === Iteration 217 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:31:40,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:31:40,147 INFO L82 PathProgramCache]: Analyzing trace with hash 1141357848, now seen corresponding path program 217 times [2021-08-21 13:31:40,147 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:31:40,147 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [431582015] [2021-08-21 13:31:40,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:31:40,147 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:31:40,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:31:40,332 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:31:40,333 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:31:40,333 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [431582015] [2021-08-21 13:31:40,333 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [431582015] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:31:40,333 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:31:40,333 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-08-21 13:31:40,333 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688937224] [2021-08-21 13:31:40,333 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-08-21 13:31:40,333 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:31:40,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-08-21 13:31:40,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-08-21 13:31:40,333 INFO L87 Difference]: Start difference. First operand 4382 states and 14814 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:31:41,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:31:41,880 INFO L93 Difference]: Finished difference Result 5411 states and 18300 transitions. [2021-08-21 13:31:41,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2021-08-21 13:31:41,880 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:31:41,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:31:41,891 INFO L225 Difference]: With dead ends: 5411 [2021-08-21 13:31:41,891 INFO L226 Difference]: Without dead ends: 5281 [2021-08-21 13:31:41,891 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1268 ImplicationChecksByTransitivity, 985.0ms TimeCoverageRelationStatistics Valid=402, Invalid=4154, Unknown=0, NotChecked=0, Total=4556 [2021-08-21 13:31:41,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5281 states. [2021-08-21 13:31:41,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5281 to 4358. [2021-08-21 13:31:41,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4358 states, 4357 states have (on average 3.3835207711728255) internal successors, (14742), 4357 states have internal predecessors, (14742), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:31:41,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4358 states to 4358 states and 14742 transitions. [2021-08-21 13:31:41,965 INFO L78 Accepts]: Start accepts. Automaton has 4358 states and 14742 transitions. Word has length 39 [2021-08-21 13:31:41,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:31:41,966 INFO L470 AbstractCegarLoop]: Abstraction has 4358 states and 14742 transitions. [2021-08-21 13:31:41,966 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:31:41,966 INFO L276 IsEmpty]: Start isEmpty. Operand 4358 states and 14742 transitions. [2021-08-21 13:31:41,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:31:41,972 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:31:41,972 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:31:41,972 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable216 [2021-08-21 13:31:41,972 INFO L402 AbstractCegarLoop]: === Iteration 218 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:31:41,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:31:41,972 INFO L82 PathProgramCache]: Analyzing trace with hash -1315657596, now seen corresponding path program 218 times [2021-08-21 13:31:41,972 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:31:41,972 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1680808666] [2021-08-21 13:31:41,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:31:41,972 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:31:41,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:31:42,173 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:31:42,174 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:31:42,174 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1680808666] [2021-08-21 13:31:42,174 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1680808666] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:31:42,174 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:31:42,174 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 13:31:42,174 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770491682] [2021-08-21 13:31:42,174 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 13:31:42,174 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:31:42,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 13:31:42,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-08-21 13:31:42,174 INFO L87 Difference]: Start difference. First operand 4358 states and 14742 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:31:43,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:31:43,816 INFO L93 Difference]: Finished difference Result 5465 states and 18464 transitions. [2021-08-21 13:31:43,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2021-08-21 13:31:43,816 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:31:43,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:31:43,827 INFO L225 Difference]: With dead ends: 5465 [2021-08-21 13:31:43,827 INFO L226 Difference]: Without dead ends: 5398 [2021-08-21 13:31:43,828 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1278 ImplicationChecksByTransitivity, 1060.1ms TimeCoverageRelationStatistics Valid=427, Invalid=4265, Unknown=0, NotChecked=0, Total=4692 [2021-08-21 13:31:43,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5398 states. [2021-08-21 13:31:43,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5398 to 4392. [2021-08-21 13:31:43,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4392 states, 4391 states have (on average 3.3823730357549535) internal successors, (14852), 4391 states have internal predecessors, (14852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:31:43,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4392 states to 4392 states and 14852 transitions. [2021-08-21 13:31:43,895 INFO L78 Accepts]: Start accepts. Automaton has 4392 states and 14852 transitions. Word has length 39 [2021-08-21 13:31:43,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:31:43,895 INFO L470 AbstractCegarLoop]: Abstraction has 4392 states and 14852 transitions. [2021-08-21 13:31:43,895 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:31:43,895 INFO L276 IsEmpty]: Start isEmpty. Operand 4392 states and 14852 transitions. [2021-08-21 13:31:43,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:31:43,901 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:31:43,901 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:31:43,901 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable217 [2021-08-21 13:31:43,901 INFO L402 AbstractCegarLoop]: === Iteration 219 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:31:43,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:31:43,901 INFO L82 PathProgramCache]: Analyzing trace with hash 1259693730, now seen corresponding path program 219 times [2021-08-21 13:31:43,901 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:31:43,901 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1177232362] [2021-08-21 13:31:43,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:31:43,901 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:31:43,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:31:44,202 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:31:44,202 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:31:44,202 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1177232362] [2021-08-21 13:31:44,202 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1177232362] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:31:44,202 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:31:44,202 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 13:31:44,202 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552585055] [2021-08-21 13:31:44,202 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 13:31:44,202 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:31:44,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 13:31:44,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-08-21 13:31:44,202 INFO L87 Difference]: Start difference. First operand 4392 states and 14852 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:31:46,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:31:46,551 INFO L93 Difference]: Finished difference Result 5594 states and 18791 transitions. [2021-08-21 13:31:46,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2021-08-21 13:31:46,551 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:31:46,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:31:46,562 INFO L225 Difference]: With dead ends: 5594 [2021-08-21 13:31:46,562 INFO L226 Difference]: Without dead ends: 5551 [2021-08-21 13:31:46,563 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2061 ImplicationChecksByTransitivity, 1610.0ms TimeCoverageRelationStatistics Valid=570, Invalid=6236, Unknown=0, NotChecked=0, Total=6806 [2021-08-21 13:31:46,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5551 states. [2021-08-21 13:31:46,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5551 to 4398. [2021-08-21 13:31:46,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4398 states, 4397 states have (on average 3.380714123265863) internal successors, (14865), 4397 states have internal predecessors, (14865), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:31:46,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4398 states to 4398 states and 14865 transitions. [2021-08-21 13:31:46,625 INFO L78 Accepts]: Start accepts. Automaton has 4398 states and 14865 transitions. Word has length 39 [2021-08-21 13:31:46,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:31:46,625 INFO L470 AbstractCegarLoop]: Abstraction has 4398 states and 14865 transitions. [2021-08-21 13:31:46,625 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:31:46,625 INFO L276 IsEmpty]: Start isEmpty. Operand 4398 states and 14865 transitions. [2021-08-21 13:31:46,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:31:46,631 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:31:46,631 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:31:46,631 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable218 [2021-08-21 13:31:46,631 INFO L402 AbstractCegarLoop]: === Iteration 220 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:31:46,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:31:46,631 INFO L82 PathProgramCache]: Analyzing trace with hash -520904572, now seen corresponding path program 220 times [2021-08-21 13:31:46,632 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:31:46,632 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [739692715] [2021-08-21 13:31:46,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:31:46,632 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:31:46,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:31:46,829 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:31:46,829 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:31:46,829 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [739692715] [2021-08-21 13:31:46,829 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [739692715] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:31:46,829 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:31:46,829 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 13:31:46,830 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2122261724] [2021-08-21 13:31:46,830 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 13:31:46,830 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:31:46,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 13:31:46,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-08-21 13:31:46,830 INFO L87 Difference]: Start difference. First operand 4398 states and 14865 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:31:48,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:31:48,699 INFO L93 Difference]: Finished difference Result 5525 states and 18611 transitions. [2021-08-21 13:31:48,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2021-08-21 13:31:48,699 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:31:48,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:31:48,711 INFO L225 Difference]: With dead ends: 5525 [2021-08-21 13:31:48,711 INFO L226 Difference]: Without dead ends: 5461 [2021-08-21 13:31:48,712 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1872 ImplicationChecksByTransitivity, 1275.8ms TimeCoverageRelationStatistics Valid=544, Invalid=5776, Unknown=0, NotChecked=0, Total=6320 [2021-08-21 13:31:48,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5461 states. [2021-08-21 13:31:48,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5461 to 4376. [2021-08-21 13:31:48,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4376 states, 4375 states have (on average 3.3856) internal successors, (14812), 4375 states have internal predecessors, (14812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:31:48,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4376 states to 4376 states and 14812 transitions. [2021-08-21 13:31:48,789 INFO L78 Accepts]: Start accepts. Automaton has 4376 states and 14812 transitions. Word has length 39 [2021-08-21 13:31:48,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:31:48,789 INFO L470 AbstractCegarLoop]: Abstraction has 4376 states and 14812 transitions. [2021-08-21 13:31:48,789 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:31:48,789 INFO L276 IsEmpty]: Start isEmpty. Operand 4376 states and 14812 transitions. [2021-08-21 13:31:48,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:31:48,796 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:31:48,796 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:31:48,796 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable219 [2021-08-21 13:31:48,796 INFO L402 AbstractCegarLoop]: === Iteration 221 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:31:48,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:31:48,796 INFO L82 PathProgramCache]: Analyzing trace with hash 99529828, now seen corresponding path program 221 times [2021-08-21 13:31:48,796 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:31:48,796 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [543959119] [2021-08-21 13:31:48,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:31:48,796 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:31:48,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:31:49,000 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:31:49,000 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:31:49,000 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [543959119] [2021-08-21 13:31:49,000 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [543959119] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:31:49,000 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:31:49,000 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 13:31:49,001 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028015195] [2021-08-21 13:31:49,001 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 13:31:49,001 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:31:49,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 13:31:49,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-08-21 13:31:49,001 INFO L87 Difference]: Start difference. First operand 4376 states and 14812 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:31:50,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:31:50,482 INFO L93 Difference]: Finished difference Result 5361 states and 18138 transitions. [2021-08-21 13:31:50,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-08-21 13:31:50,483 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:31:50,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:31:50,493 INFO L225 Difference]: With dead ends: 5361 [2021-08-21 13:31:50,494 INFO L226 Difference]: Without dead ends: 5294 [2021-08-21 13:31:50,494 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 908 ImplicationChecksByTransitivity, 939.2ms TimeCoverageRelationStatistics Valid=346, Invalid=3314, Unknown=0, NotChecked=0, Total=3660 [2021-08-21 13:31:50,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5294 states. [2021-08-21 13:31:50,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5294 to 4388. [2021-08-21 13:31:50,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4388 states, 4387 states have (on average 3.3822657852746754) internal successors, (14838), 4387 states have internal predecessors, (14838), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:31:50,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4388 states to 4388 states and 14838 transitions. [2021-08-21 13:31:50,570 INFO L78 Accepts]: Start accepts. Automaton has 4388 states and 14838 transitions. Word has length 39 [2021-08-21 13:31:50,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:31:50,570 INFO L470 AbstractCegarLoop]: Abstraction has 4388 states and 14838 transitions. [2021-08-21 13:31:50,571 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:31:50,571 INFO L276 IsEmpty]: Start isEmpty. Operand 4388 states and 14838 transitions. [2021-08-21 13:31:50,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:31:50,578 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:31:50,578 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:31:50,578 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable220 [2021-08-21 13:31:50,578 INFO L402 AbstractCegarLoop]: === Iteration 222 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:31:50,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:31:50,578 INFO L82 PathProgramCache]: Analyzing trace with hash -31065020, now seen corresponding path program 222 times [2021-08-21 13:31:50,578 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:31:50,578 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1699442228] [2021-08-21 13:31:50,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:31:50,578 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:31:50,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:31:50,895 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:31:50,895 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:31:50,895 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1699442228] [2021-08-21 13:31:50,895 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1699442228] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:31:50,895 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:31:50,895 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 13:31:50,896 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293465054] [2021-08-21 13:31:50,896 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 13:31:50,896 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:31:50,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 13:31:50,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-08-21 13:31:50,896 INFO L87 Difference]: Start difference. First operand 4388 states and 14838 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:31:52,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:31:52,619 INFO L93 Difference]: Finished difference Result 5370 states and 18122 transitions. [2021-08-21 13:31:52,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-08-21 13:31:52,620 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:31:52,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:31:52,630 INFO L225 Difference]: With dead ends: 5370 [2021-08-21 13:31:52,630 INFO L226 Difference]: Without dead ends: 5307 [2021-08-21 13:31:52,631 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 951 ImplicationChecksByTransitivity, 1149.0ms TimeCoverageRelationStatistics Valid=352, Invalid=3430, Unknown=0, NotChecked=0, Total=3782 [2021-08-21 13:31:52,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5307 states. [2021-08-21 13:31:52,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5307 to 4380. [2021-08-21 13:31:52,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4380 states, 4379 states have (on average 3.3838775976250286) internal successors, (14818), 4379 states have internal predecessors, (14818), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:31:52,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4380 states to 4380 states and 14818 transitions. [2021-08-21 13:31:52,744 INFO L78 Accepts]: Start accepts. Automaton has 4380 states and 14818 transitions. Word has length 39 [2021-08-21 13:31:52,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:31:52,744 INFO L470 AbstractCegarLoop]: Abstraction has 4380 states and 14818 transitions. [2021-08-21 13:31:52,744 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:31:52,744 INFO L276 IsEmpty]: Start isEmpty. Operand 4380 states and 14818 transitions. [2021-08-21 13:31:52,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:31:52,750 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:31:52,750 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:31:52,750 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable221 [2021-08-21 13:31:52,750 INFO L402 AbstractCegarLoop]: === Iteration 223 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:31:52,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:31:52,751 INFO L82 PathProgramCache]: Analyzing trace with hash -166743612, now seen corresponding path program 223 times [2021-08-21 13:31:52,751 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:31:52,751 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [41424997] [2021-08-21 13:31:52,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:31:52,751 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:31:52,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:31:53,007 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:31:53,007 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:31:53,007 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [41424997] [2021-08-21 13:31:53,007 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [41424997] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:31:53,007 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:31:53,007 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 13:31:53,007 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1576792006] [2021-08-21 13:31:53,008 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 13:31:53,008 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:31:53,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 13:31:53,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-08-21 13:31:53,008 INFO L87 Difference]: Start difference. First operand 4380 states and 14818 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:31:55,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:31:55,371 INFO L93 Difference]: Finished difference Result 5537 states and 18547 transitions. [2021-08-21 13:31:55,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2021-08-21 13:31:55,372 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:31:55,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:31:55,382 INFO L225 Difference]: With dead ends: 5537 [2021-08-21 13:31:55,383 INFO L226 Difference]: Without dead ends: 5494 [2021-08-21 13:31:55,383 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1694 ImplicationChecksByTransitivity, 1632.9ms TimeCoverageRelationStatistics Valid=519, Invalid=5333, Unknown=0, NotChecked=0, Total=5852 [2021-08-21 13:31:55,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5494 states. [2021-08-21 13:31:55,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5494 to 4388. [2021-08-21 13:31:55,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4388 states, 4387 states have (on average 3.3822657852746754) internal successors, (14838), 4387 states have internal predecessors, (14838), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:31:55,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4388 states to 4388 states and 14838 transitions. [2021-08-21 13:31:55,489 INFO L78 Accepts]: Start accepts. Automaton has 4388 states and 14838 transitions. Word has length 39 [2021-08-21 13:31:55,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:31:55,489 INFO L470 AbstractCegarLoop]: Abstraction has 4388 states and 14838 transitions. [2021-08-21 13:31:55,489 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:31:55,489 INFO L276 IsEmpty]: Start isEmpty. Operand 4388 states and 14838 transitions. [2021-08-21 13:31:55,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:31:55,494 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:31:55,494 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:31:55,495 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable222 [2021-08-21 13:31:55,495 INFO L402 AbstractCegarLoop]: === Iteration 224 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:31:55,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:31:55,495 INFO L82 PathProgramCache]: Analyzing trace with hash -1947341914, now seen corresponding path program 224 times [2021-08-21 13:31:55,495 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:31:55,495 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2050893133] [2021-08-21 13:31:55,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:31:55,495 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:31:55,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:31:55,787 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:31:55,787 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:31:55,787 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2050893133] [2021-08-21 13:31:55,787 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2050893133] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:31:55,787 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:31:55,787 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 13:31:55,787 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1003948884] [2021-08-21 13:31:55,787 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 13:31:55,787 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:31:55,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 13:31:55,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-08-21 13:31:55,788 INFO L87 Difference]: Start difference. First operand 4388 states and 14838 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:31:58,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:31:58,080 INFO L93 Difference]: Finished difference Result 5525 states and 18509 transitions. [2021-08-21 13:31:58,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2021-08-21 13:31:58,080 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:31:58,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:31:58,091 INFO L225 Difference]: With dead ends: 5525 [2021-08-21 13:31:58,091 INFO L226 Difference]: Without dead ends: 5473 [2021-08-21 13:31:58,092 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1636 ImplicationChecksByTransitivity, 1600.6ms TimeCoverageRelationStatistics Valid=511, Invalid=5189, Unknown=0, NotChecked=0, Total=5700 [2021-08-21 13:31:58,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5473 states. [2021-08-21 13:31:58,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5473 to 4380. [2021-08-21 13:31:58,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4380 states, 4379 states have (on average 3.3838775976250286) internal successors, (14818), 4379 states have internal predecessors, (14818), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:31:58,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4380 states to 4380 states and 14818 transitions. [2021-08-21 13:31:58,190 INFO L78 Accepts]: Start accepts. Automaton has 4380 states and 14818 transitions. Word has length 39 [2021-08-21 13:31:58,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:31:58,190 INFO L470 AbstractCegarLoop]: Abstraction has 4380 states and 14818 transitions. [2021-08-21 13:31:58,191 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:31:58,191 INFO L276 IsEmpty]: Start isEmpty. Operand 4380 states and 14818 transitions. [2021-08-21 13:31:58,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:31:58,196 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:31:58,196 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:31:58,196 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable223 [2021-08-21 13:31:58,196 INFO L402 AbstractCegarLoop]: === Iteration 225 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:31:58,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:31:58,196 INFO L82 PathProgramCache]: Analyzing trace with hash 751739958, now seen corresponding path program 225 times [2021-08-21 13:31:58,196 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:31:58,197 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1340588349] [2021-08-21 13:31:58,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:31:58,197 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:31:58,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:31:58,488 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:31:58,488 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:31:58,488 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1340588349] [2021-08-21 13:31:58,488 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1340588349] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:31:58,488 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:31:58,488 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 13:31:58,488 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [260098243] [2021-08-21 13:31:58,488 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 13:31:58,488 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:31:58,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 13:31:58,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-08-21 13:31:58,489 INFO L87 Difference]: Start difference. First operand 4380 states and 14818 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:32:00,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:32:00,413 INFO L93 Difference]: Finished difference Result 5508 states and 18427 transitions. [2021-08-21 13:32:00,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2021-08-21 13:32:00,413 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:32:00,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:32:00,425 INFO L225 Difference]: With dead ends: 5508 [2021-08-21 13:32:00,425 INFO L226 Difference]: Without dead ends: 5453 [2021-08-21 13:32:00,426 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1136 ImplicationChecksByTransitivity, 1342.1ms TimeCoverageRelationStatistics Valid=396, Invalid=3894, Unknown=0, NotChecked=0, Total=4290 [2021-08-21 13:32:00,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5453 states. [2021-08-21 13:32:00,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5453 to 4382. [2021-08-21 13:32:00,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4382 states, 4381 states have (on average 3.3830175758959142) internal successors, (14821), 4381 states have internal predecessors, (14821), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:32:00,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4382 states to 4382 states and 14821 transitions. [2021-08-21 13:32:00,501 INFO L78 Accepts]: Start accepts. Automaton has 4382 states and 14821 transitions. Word has length 39 [2021-08-21 13:32:00,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:32:00,501 INFO L470 AbstractCegarLoop]: Abstraction has 4382 states and 14821 transitions. [2021-08-21 13:32:00,501 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:32:00,501 INFO L276 IsEmpty]: Start isEmpty. Operand 4382 states and 14821 transitions. [2021-08-21 13:32:00,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:32:00,507 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:32:00,507 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:32:00,507 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable224 [2021-08-21 13:32:00,507 INFO L402 AbstractCegarLoop]: === Iteration 226 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:32:00,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:32:00,508 INFO L82 PathProgramCache]: Analyzing trace with hash 1924392180, now seen corresponding path program 226 times [2021-08-21 13:32:00,508 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:32:00,508 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1482116428] [2021-08-21 13:32:00,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:32:00,508 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:32:00,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:32:00,811 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:32:00,811 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:32:00,811 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1482116428] [2021-08-21 13:32:00,811 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1482116428] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:32:00,811 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:32:00,811 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 13:32:00,811 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1415066995] [2021-08-21 13:32:00,811 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 13:32:00,811 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:32:00,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 13:32:00,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-08-21 13:32:00,812 INFO L87 Difference]: Start difference. First operand 4382 states and 14821 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:32:02,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:32:02,541 INFO L93 Difference]: Finished difference Result 5421 states and 18236 transitions. [2021-08-21 13:32:02,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2021-08-21 13:32:02,542 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:32:02,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:32:02,553 INFO L225 Difference]: With dead ends: 5421 [2021-08-21 13:32:02,553 INFO L226 Difference]: Without dead ends: 5357 [2021-08-21 13:32:02,553 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1037 ImplicationChecksByTransitivity, 1168.7ms TimeCoverageRelationStatistics Valid=379, Invalid=3653, Unknown=0, NotChecked=0, Total=4032 [2021-08-21 13:32:02,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5357 states. [2021-08-21 13:32:02,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5357 to 4376. [2021-08-21 13:32:02,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4376 states, 4375 states have (on average 3.3846857142857143) internal successors, (14808), 4375 states have internal predecessors, (14808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:32:02,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4376 states to 4376 states and 14808 transitions. [2021-08-21 13:32:02,620 INFO L78 Accepts]: Start accepts. Automaton has 4376 states and 14808 transitions. Word has length 39 [2021-08-21 13:32:02,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:32:02,621 INFO L470 AbstractCegarLoop]: Abstraction has 4376 states and 14808 transitions. [2021-08-21 13:32:02,621 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:32:02,621 INFO L276 IsEmpty]: Start isEmpty. Operand 4376 states and 14808 transitions. [2021-08-21 13:32:02,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:32:02,626 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:32:02,626 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:32:02,626 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable225 [2021-08-21 13:32:02,627 INFO L402 AbstractCegarLoop]: === Iteration 227 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:32:02,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:32:02,627 INFO L82 PathProgramCache]: Analyzing trace with hash -128526794, now seen corresponding path program 227 times [2021-08-21 13:32:02,627 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:32:02,627 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1640530392] [2021-08-21 13:32:02,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:32:02,627 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:32:02,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:32:02,830 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:32:02,831 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:32:02,831 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1640530392] [2021-08-21 13:32:02,831 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1640530392] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:32:02,831 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:32:02,831 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 13:32:02,831 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435988145] [2021-08-21 13:32:02,831 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 13:32:02,831 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:32:02,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 13:32:02,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-08-21 13:32:02,831 INFO L87 Difference]: Start difference. First operand 4376 states and 14808 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:32:04,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:32:04,628 INFO L93 Difference]: Finished difference Result 5610 states and 18811 transitions. [2021-08-21 13:32:04,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2021-08-21 13:32:04,629 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:32:04,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:32:04,640 INFO L225 Difference]: With dead ends: 5610 [2021-08-21 13:32:04,640 INFO L226 Difference]: Without dead ends: 5473 [2021-08-21 13:32:04,640 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1642 ImplicationChecksByTransitivity, 1168.6ms TimeCoverageRelationStatistics Valid=466, Invalid=5234, Unknown=0, NotChecked=0, Total=5700 [2021-08-21 13:32:04,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5473 states. [2021-08-21 13:32:04,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5473 to 4384. [2021-08-21 13:32:04,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4384 states, 4383 states have (on average 3.3858088067533654) internal successors, (14840), 4383 states have internal predecessors, (14840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:32:04,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4384 states to 4384 states and 14840 transitions. [2021-08-21 13:32:04,708 INFO L78 Accepts]: Start accepts. Automaton has 4384 states and 14840 transitions. Word has length 39 [2021-08-21 13:32:04,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:32:04,709 INFO L470 AbstractCegarLoop]: Abstraction has 4384 states and 14840 transitions. [2021-08-21 13:32:04,709 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:32:04,709 INFO L276 IsEmpty]: Start isEmpty. Operand 4384 states and 14840 transitions. [2021-08-21 13:32:04,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:32:04,714 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:32:04,714 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:32:04,714 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable226 [2021-08-21 13:32:04,715 INFO L402 AbstractCegarLoop]: === Iteration 228 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:32:04,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:32:04,715 INFO L82 PathProgramCache]: Analyzing trace with hash -1623417694, now seen corresponding path program 228 times [2021-08-21 13:32:04,715 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:32:04,715 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [368226272] [2021-08-21 13:32:04,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:32:04,715 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:32:04,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:32:04,924 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:32:04,925 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:32:04,925 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [368226272] [2021-08-21 13:32:04,925 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [368226272] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:32:04,925 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:32:04,925 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 13:32:04,925 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449529833] [2021-08-21 13:32:04,925 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 13:32:04,925 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:32:04,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 13:32:04,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-08-21 13:32:04,925 INFO L87 Difference]: Start difference. First operand 4384 states and 14840 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:32:06,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:32:06,728 INFO L93 Difference]: Finished difference Result 5569 states and 18627 transitions. [2021-08-21 13:32:06,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2021-08-21 13:32:06,729 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:32:06,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:32:06,740 INFO L225 Difference]: With dead ends: 5569 [2021-08-21 13:32:06,740 INFO L226 Difference]: Without dead ends: 5505 [2021-08-21 13:32:06,742 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1581 ImplicationChecksByTransitivity, 1219.7ms TimeCoverageRelationStatistics Valid=485, Invalid=5065, Unknown=0, NotChecked=0, Total=5550 [2021-08-21 13:32:06,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5505 states. [2021-08-21 13:32:06,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5505 to 4388. [2021-08-21 13:32:06,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4388 states, 4387 states have (on average 3.3850011397310236) internal successors, (14850), 4387 states have internal predecessors, (14850), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:32:06,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4388 states to 4388 states and 14850 transitions. [2021-08-21 13:32:06,817 INFO L78 Accepts]: Start accepts. Automaton has 4388 states and 14850 transitions. Word has length 39 [2021-08-21 13:32:06,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:32:06,817 INFO L470 AbstractCegarLoop]: Abstraction has 4388 states and 14850 transitions. [2021-08-21 13:32:06,817 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:32:06,817 INFO L276 IsEmpty]: Start isEmpty. Operand 4388 states and 14850 transitions. [2021-08-21 13:32:06,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:32:06,823 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:32:06,824 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:32:06,824 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable227 [2021-08-21 13:32:06,824 INFO L402 AbstractCegarLoop]: === Iteration 229 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:32:06,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:32:06,824 INFO L82 PathProgramCache]: Analyzing trace with hash -704934124, now seen corresponding path program 229 times [2021-08-21 13:32:06,824 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:32:06,824 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1487560074] [2021-08-21 13:32:06,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:32:06,824 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:32:06,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:32:07,120 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:32:07,120 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:32:07,120 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1487560074] [2021-08-21 13:32:07,121 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1487560074] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:32:07,121 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:32:07,121 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 13:32:07,121 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1002979091] [2021-08-21 13:32:07,121 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 13:32:07,121 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:32:07,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 13:32:07,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-08-21 13:32:07,121 INFO L87 Difference]: Start difference. First operand 4388 states and 14850 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:32:08,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:32:08,916 INFO L93 Difference]: Finished difference Result 5495 states and 18413 transitions. [2021-08-21 13:32:08,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-08-21 13:32:08,916 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:32:08,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:32:08,927 INFO L225 Difference]: With dead ends: 5495 [2021-08-21 13:32:08,927 INFO L226 Difference]: Without dead ends: 5440 [2021-08-21 13:32:08,928 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 993 ImplicationChecksByTransitivity, 1188.3ms TimeCoverageRelationStatistics Valid=351, Invalid=3555, Unknown=0, NotChecked=0, Total=3906 [2021-08-21 13:32:08,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5440 states. [2021-08-21 13:32:08,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5440 to 4390. [2021-08-21 13:32:08,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4390 states, 4389 states have (on average 3.384142173615858) internal successors, (14853), 4389 states have internal predecessors, (14853), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:32:08,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4390 states to 4390 states and 14853 transitions. [2021-08-21 13:32:08,997 INFO L78 Accepts]: Start accepts. Automaton has 4390 states and 14853 transitions. Word has length 39 [2021-08-21 13:32:08,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:32:08,997 INFO L470 AbstractCegarLoop]: Abstraction has 4390 states and 14853 transitions. [2021-08-21 13:32:08,997 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:32:08,997 INFO L276 IsEmpty]: Start isEmpty. Operand 4390 states and 14853 transitions. [2021-08-21 13:32:09,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:32:09,004 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:32:09,004 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:32:09,004 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable228 [2021-08-21 13:32:09,004 INFO L402 AbstractCegarLoop]: === Iteration 230 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:32:09,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:32:09,005 INFO L82 PathProgramCache]: Analyzing trace with hash 467718098, now seen corresponding path program 230 times [2021-08-21 13:32:09,005 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:32:09,005 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1645043441] [2021-08-21 13:32:09,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:32:09,005 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:32:09,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:32:09,292 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:32:09,292 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:32:09,292 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1645043441] [2021-08-21 13:32:09,292 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1645043441] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:32:09,292 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:32:09,292 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 13:32:09,292 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1060990341] [2021-08-21 13:32:09,292 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 13:32:09,292 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:32:09,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 13:32:09,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-08-21 13:32:09,293 INFO L87 Difference]: Start difference. First operand 4390 states and 14853 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:32:10,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:32:10,981 INFO L93 Difference]: Finished difference Result 5513 states and 18457 transitions. [2021-08-21 13:32:10,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2021-08-21 13:32:10,981 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:32:10,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:32:10,992 INFO L225 Difference]: With dead ends: 5513 [2021-08-21 13:32:10,992 INFO L226 Difference]: Without dead ends: 5453 [2021-08-21 13:32:10,992 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1044 ImplicationChecksByTransitivity, 1096.8ms TimeCoverageRelationStatistics Valid=362, Invalid=3670, Unknown=0, NotChecked=0, Total=4032 [2021-08-21 13:32:10,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5453 states. [2021-08-21 13:32:11,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5453 to 4388. [2021-08-21 13:32:11,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4388 states, 4387 states have (on average 3.384545247321632) internal successors, (14848), 4387 states have internal predecessors, (14848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:32:11,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4388 states to 4388 states and 14848 transitions. [2021-08-21 13:32:11,063 INFO L78 Accepts]: Start accepts. Automaton has 4388 states and 14848 transitions. Word has length 39 [2021-08-21 13:32:11,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:32:11,063 INFO L470 AbstractCegarLoop]: Abstraction has 4388 states and 14848 transitions. [2021-08-21 13:32:11,063 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:32:11,063 INFO L276 IsEmpty]: Start isEmpty. Operand 4388 states and 14848 transitions. [2021-08-21 13:32:11,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:32:11,069 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:32:11,069 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:32:11,069 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable229 [2021-08-21 13:32:11,069 INFO L402 AbstractCegarLoop]: === Iteration 231 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:32:11,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:32:11,070 INFO L82 PathProgramCache]: Analyzing trace with hash -1611848444, now seen corresponding path program 231 times [2021-08-21 13:32:11,070 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:32:11,070 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [423833978] [2021-08-21 13:32:11,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:32:11,070 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:32:11,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:32:11,370 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:32:11,371 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:32:11,371 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [423833978] [2021-08-21 13:32:11,371 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [423833978] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:32:11,371 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:32:11,371 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-08-21 13:32:11,371 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346711560] [2021-08-21 13:32:11,371 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-08-21 13:32:11,371 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:32:11,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-08-21 13:32:11,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-08-21 13:32:11,371 INFO L87 Difference]: Start difference. First operand 4388 states and 14848 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:32:12,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:32:12,978 INFO L93 Difference]: Finished difference Result 5370 states and 18139 transitions. [2021-08-21 13:32:12,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2021-08-21 13:32:12,978 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:32:12,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:32:12,990 INFO L225 Difference]: With dead ends: 5370 [2021-08-21 13:32:12,990 INFO L226 Difference]: Without dead ends: 5294 [2021-08-21 13:32:12,990 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 826 ImplicationChecksByTransitivity, 1044.1ms TimeCoverageRelationStatistics Valid=312, Invalid=2994, Unknown=0, NotChecked=0, Total=3306 [2021-08-21 13:32:12,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5294 states. [2021-08-21 13:32:13,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5294 to 4396. [2021-08-21 13:32:13,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4396 states, 4395 states have (on average 3.3820250284414106) internal successors, (14864), 4395 states have internal predecessors, (14864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:32:13,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4396 states to 4396 states and 14864 transitions. [2021-08-21 13:32:13,062 INFO L78 Accepts]: Start accepts. Automaton has 4396 states and 14864 transitions. Word has length 39 [2021-08-21 13:32:13,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:32:13,063 INFO L470 AbstractCegarLoop]: Abstraction has 4396 states and 14864 transitions. [2021-08-21 13:32:13,063 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:32:13,063 INFO L276 IsEmpty]: Start isEmpty. Operand 4396 states and 14864 transitions. [2021-08-21 13:32:13,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:32:13,069 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:32:13,069 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:32:13,069 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable230 [2021-08-21 13:32:13,069 INFO L402 AbstractCegarLoop]: === Iteration 232 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:32:13,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:32:13,069 INFO L82 PathProgramCache]: Analyzing trace with hash 1665065240, now seen corresponding path program 232 times [2021-08-21 13:32:13,069 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:32:13,070 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [156327467] [2021-08-21 13:32:13,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:32:13,070 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:32:13,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:32:13,400 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:32:13,400 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:32:13,400 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [156327467] [2021-08-21 13:32:13,400 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [156327467] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:32:13,400 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:32:13,400 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 13:32:13,400 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1709626477] [2021-08-21 13:32:13,401 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 13:32:13,401 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:32:13,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 13:32:13,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-08-21 13:32:13,401 INFO L87 Difference]: Start difference. First operand 4396 states and 14864 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:32:15,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:32:15,084 INFO L93 Difference]: Finished difference Result 5400 states and 18190 transitions. [2021-08-21 13:32:15,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-08-21 13:32:15,085 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:32:15,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:32:15,095 INFO L225 Difference]: With dead ends: 5400 [2021-08-21 13:32:15,095 INFO L226 Difference]: Without dead ends: 5322 [2021-08-21 13:32:15,096 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 909 ImplicationChecksByTransitivity, 1105.5ms TimeCoverageRelationStatistics Valid=328, Invalid=3332, Unknown=0, NotChecked=0, Total=3660 [2021-08-21 13:32:15,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5322 states. [2021-08-21 13:32:15,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5322 to 4376. [2021-08-21 13:32:15,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4376 states, 4375 states have (on average 3.3856) internal successors, (14812), 4375 states have internal predecessors, (14812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:32:15,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4376 states to 4376 states and 14812 transitions. [2021-08-21 13:32:15,162 INFO L78 Accepts]: Start accepts. Automaton has 4376 states and 14812 transitions. Word has length 39 [2021-08-21 13:32:15,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:32:15,162 INFO L470 AbstractCegarLoop]: Abstraction has 4376 states and 14812 transitions. [2021-08-21 13:32:15,162 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:32:15,162 INFO L276 IsEmpty]: Start isEmpty. Operand 4376 states and 14812 transitions. [2021-08-21 13:32:15,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:32:15,168 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:32:15,168 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:32:15,168 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable231 [2021-08-21 13:32:15,168 INFO L402 AbstractCegarLoop]: === Iteration 233 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:32:15,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:32:15,169 INFO L82 PathProgramCache]: Analyzing trace with hash 637928698, now seen corresponding path program 233 times [2021-08-21 13:32:15,169 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:32:15,169 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [199653839] [2021-08-21 13:32:15,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:32:15,169 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:32:15,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:32:15,449 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:32:15,449 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:32:15,449 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [199653839] [2021-08-21 13:32:15,449 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [199653839] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:32:15,449 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:32:15,449 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-08-21 13:32:15,449 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140919107] [2021-08-21 13:32:15,450 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-08-21 13:32:15,450 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:32:15,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-08-21 13:32:15,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-08-21 13:32:15,450 INFO L87 Difference]: Start difference. First operand 4376 states and 14812 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:32:17,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:32:17,221 INFO L93 Difference]: Finished difference Result 5319 states and 18031 transitions. [2021-08-21 13:32:17,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-08-21 13:32:17,221 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:32:17,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:32:17,232 INFO L225 Difference]: With dead ends: 5319 [2021-08-21 13:32:17,232 INFO L226 Difference]: Without dead ends: 5252 [2021-08-21 13:32:17,233 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 870 ImplicationChecksByTransitivity, 1078.7ms TimeCoverageRelationStatistics Valid=324, Invalid=3098, Unknown=0, NotChecked=0, Total=3422 [2021-08-21 13:32:17,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5252 states. [2021-08-21 13:32:17,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5252 to 4424. [2021-08-21 13:32:17,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4424 states, 4423 states have (on average 3.3818675107393172) internal successors, (14958), 4423 states have internal predecessors, (14958), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:32:17,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4424 states to 4424 states and 14958 transitions. [2021-08-21 13:32:17,300 INFO L78 Accepts]: Start accepts. Automaton has 4424 states and 14958 transitions. Word has length 39 [2021-08-21 13:32:17,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:32:17,300 INFO L470 AbstractCegarLoop]: Abstraction has 4424 states and 14958 transitions. [2021-08-21 13:32:17,300 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:32:17,300 INFO L276 IsEmpty]: Start isEmpty. Operand 4424 states and 14958 transitions. [2021-08-21 13:32:17,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:32:17,306 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:32:17,306 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:32:17,306 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable232 [2021-08-21 13:32:17,306 INFO L402 AbstractCegarLoop]: === Iteration 234 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:32:17,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:32:17,307 INFO L82 PathProgramCache]: Analyzing trace with hash -1081687272, now seen corresponding path program 234 times [2021-08-21 13:32:17,307 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:32:17,307 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1599234833] [2021-08-21 13:32:17,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:32:17,307 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:32:17,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:32:17,596 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:32:17,596 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:32:17,596 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1599234833] [2021-08-21 13:32:17,596 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1599234833] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:32:17,596 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:32:17,596 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-08-21 13:32:17,596 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [441404796] [2021-08-21 13:32:17,596 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-08-21 13:32:17,597 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:32:17,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-08-21 13:32:17,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-08-21 13:32:17,597 INFO L87 Difference]: Start difference. First operand 4424 states and 14958 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:32:19,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:32:19,975 INFO L93 Difference]: Finished difference Result 5415 states and 18292 transitions. [2021-08-21 13:32:19,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2021-08-21 13:32:19,976 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:32:19,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:32:19,986 INFO L225 Difference]: With dead ends: 5415 [2021-08-21 13:32:19,986 INFO L226 Difference]: Without dead ends: 5372 [2021-08-21 13:32:19,987 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1530 ImplicationChecksByTransitivity, 1600.5ms TimeCoverageRelationStatistics Valid=459, Invalid=4797, Unknown=0, NotChecked=0, Total=5256 [2021-08-21 13:32:19,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5372 states. [2021-08-21 13:32:20,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5372 to 4430. [2021-08-21 13:32:20,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4430 states, 4429 states have (on average 3.38022126890946) internal successors, (14971), 4429 states have internal predecessors, (14971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:32:20,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4430 states to 4430 states and 14971 transitions. [2021-08-21 13:32:20,050 INFO L78 Accepts]: Start accepts. Automaton has 4430 states and 14971 transitions. Word has length 39 [2021-08-21 13:32:20,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:32:20,051 INFO L470 AbstractCegarLoop]: Abstraction has 4430 states and 14971 transitions. [2021-08-21 13:32:20,051 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:32:20,051 INFO L276 IsEmpty]: Start isEmpty. Operand 4430 states and 14971 transitions. [2021-08-21 13:32:20,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:32:20,056 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:32:20,056 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:32:20,056 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable233 [2021-08-21 13:32:20,056 INFO L402 AbstractCegarLoop]: === Iteration 235 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:32:20,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:32:20,057 INFO L82 PathProgramCache]: Analyzing trace with hash 1432681722, now seen corresponding path program 235 times [2021-08-21 13:32:20,057 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:32:20,057 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [780851934] [2021-08-21 13:32:20,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:32:20,057 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:32:20,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:32:20,335 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:32:20,335 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:32:20,335 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [780851934] [2021-08-21 13:32:20,335 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [780851934] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:32:20,336 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:32:20,336 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-08-21 13:32:20,336 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859985869] [2021-08-21 13:32:20,336 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-08-21 13:32:20,336 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:32:20,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-08-21 13:32:20,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-08-21 13:32:20,336 INFO L87 Difference]: Start difference. First operand 4430 states and 14971 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:32:22,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:32:22,570 INFO L93 Difference]: Finished difference Result 5346 states and 18112 transitions. [2021-08-21 13:32:22,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2021-08-21 13:32:22,571 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:32:22,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:32:22,581 INFO L225 Difference]: With dead ends: 5346 [2021-08-21 13:32:22,581 INFO L226 Difference]: Without dead ends: 5282 [2021-08-21 13:32:22,582 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1473 ImplicationChecksByTransitivity, 1453.7ms TimeCoverageRelationStatistics Valid=452, Invalid=4660, Unknown=0, NotChecked=0, Total=5112 [2021-08-21 13:32:22,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5282 states. [2021-08-21 13:32:22,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5282 to 4412. [2021-08-21 13:32:22,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4412 states, 4411 states have (on average 3.382452958512809) internal successors, (14920), 4411 states have internal predecessors, (14920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:32:22,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4412 states to 4412 states and 14920 transitions. [2021-08-21 13:32:22,645 INFO L78 Accepts]: Start accepts. Automaton has 4412 states and 14920 transitions. Word has length 39 [2021-08-21 13:32:22,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:32:22,646 INFO L470 AbstractCegarLoop]: Abstraction has 4412 states and 14920 transitions. [2021-08-21 13:32:22,646 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:32:22,646 INFO L276 IsEmpty]: Start isEmpty. Operand 4412 states and 14920 transitions. [2021-08-21 13:32:22,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:32:22,652 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:32:22,652 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:32:22,652 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable234 [2021-08-21 13:32:22,652 INFO L402 AbstractCegarLoop]: === Iteration 236 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:32:22,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:32:22,652 INFO L82 PathProgramCache]: Analyzing trace with hash 1023866106, now seen corresponding path program 236 times [2021-08-21 13:32:22,652 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:32:22,652 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1341033375] [2021-08-21 13:32:22,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:32:22,652 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:32:22,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:32:22,933 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:32:22,933 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:32:22,933 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1341033375] [2021-08-21 13:32:22,933 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1341033375] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:32:22,933 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:32:22,933 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-08-21 13:32:22,933 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524078757] [2021-08-21 13:32:22,934 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-08-21 13:32:22,934 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:32:22,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-08-21 13:32:22,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-08-21 13:32:22,934 INFO L87 Difference]: Start difference. First operand 4412 states and 14920 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:32:24,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:32:24,923 INFO L93 Difference]: Finished difference Result 5367 states and 18159 transitions. [2021-08-21 13:32:24,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2021-08-21 13:32:24,923 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:32:24,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:32:24,934 INFO L225 Difference]: With dead ends: 5367 [2021-08-21 13:32:24,934 INFO L226 Difference]: Without dead ends: 5237 [2021-08-21 13:32:24,935 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1218 ImplicationChecksByTransitivity, 1288.0ms TimeCoverageRelationStatistics Valid=387, Invalid=4035, Unknown=0, NotChecked=0, Total=4422 [2021-08-21 13:32:24,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5237 states. [2021-08-21 13:32:24,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5237 to 4388. [2021-08-21 13:32:24,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4388 states, 4387 states have (on average 3.3836334625028495) internal successors, (14844), 4387 states have internal predecessors, (14844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:32:24,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4388 states to 4388 states and 14844 transitions. [2021-08-21 13:32:24,999 INFO L78 Accepts]: Start accepts. Automaton has 4388 states and 14844 transitions. Word has length 39 [2021-08-21 13:32:25,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:32:25,000 INFO L470 AbstractCegarLoop]: Abstraction has 4388 states and 14844 transitions. [2021-08-21 13:32:25,000 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:32:25,000 INFO L276 IsEmpty]: Start isEmpty. Operand 4388 states and 14844 transitions. [2021-08-21 13:32:25,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:32:25,006 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:32:25,006 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:32:25,006 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable235 [2021-08-21 13:32:25,006 INFO L402 AbstractCegarLoop]: === Iteration 237 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:32:25,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:32:25,007 INFO L82 PathProgramCache]: Analyzing trace with hash 362721816, now seen corresponding path program 237 times [2021-08-21 13:32:25,007 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:32:25,007 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [982522407] [2021-08-21 13:32:25,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:32:25,007 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:32:25,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:32:25,212 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:32:25,212 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:32:25,212 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [982522407] [2021-08-21 13:32:25,212 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [982522407] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:32:25,212 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:32:25,212 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 13:32:25,212 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892080004] [2021-08-21 13:32:25,212 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 13:32:25,212 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:32:25,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 13:32:25,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-08-21 13:32:25,213 INFO L87 Difference]: Start difference. First operand 4388 states and 14844 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:32:27,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:32:27,097 INFO L93 Difference]: Finished difference Result 5412 states and 18282 transitions. [2021-08-21 13:32:27,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2021-08-21 13:32:27,097 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:32:27,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:32:27,108 INFO L225 Difference]: With dead ends: 5412 [2021-08-21 13:32:27,108 INFO L226 Difference]: Without dead ends: 5345 [2021-08-21 13:32:27,108 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1133 ImplicationChecksByTransitivity, 1153.6ms TimeCoverageRelationStatistics Valid=375, Invalid=3915, Unknown=0, NotChecked=0, Total=4290 [2021-08-21 13:32:27,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5345 states. [2021-08-21 13:32:27,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5345 to 4406. [2021-08-21 13:32:27,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4406 states, 4405 states have (on average 3.380703745743473) internal successors, (14892), 4405 states have internal predecessors, (14892), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:32:27,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4406 states to 4406 states and 14892 transitions. [2021-08-21 13:32:27,176 INFO L78 Accepts]: Start accepts. Automaton has 4406 states and 14892 transitions. Word has length 39 [2021-08-21 13:32:27,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:32:27,176 INFO L470 AbstractCegarLoop]: Abstraction has 4406 states and 14892 transitions. [2021-08-21 13:32:27,176 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:32:27,176 INFO L276 IsEmpty]: Start isEmpty. Operand 4406 states and 14892 transitions. [2021-08-21 13:32:27,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:32:27,183 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:32:27,183 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:32:27,183 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable236 [2021-08-21 13:32:27,183 INFO L402 AbstractCegarLoop]: === Iteration 238 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:32:27,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:32:27,183 INFO L82 PathProgramCache]: Analyzing trace with hash -1356894154, now seen corresponding path program 238 times [2021-08-21 13:32:27,183 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:32:27,183 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1801326531] [2021-08-21 13:32:27,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:32:27,184 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:32:27,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:32:27,412 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:32:27,412 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:32:27,412 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1801326531] [2021-08-21 13:32:27,412 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1801326531] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:32:27,412 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:32:27,412 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 13:32:27,412 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352830681] [2021-08-21 13:32:27,412 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 13:32:27,412 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:32:27,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 13:32:27,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-08-21 13:32:27,413 INFO L87 Difference]: Start difference. First operand 4406 states and 14892 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:32:30,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:32:30,036 INFO L93 Difference]: Finished difference Result 5541 states and 18609 transitions. [2021-08-21 13:32:30,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2021-08-21 13:32:30,037 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:32:30,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:32:30,047 INFO L225 Difference]: With dead ends: 5541 [2021-08-21 13:32:30,047 INFO L226 Difference]: Without dead ends: 5498 [2021-08-21 13:32:30,048 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1874 ImplicationChecksByTransitivity, 1662.3ms TimeCoverageRelationStatistics Valid=517, Invalid=5803, Unknown=0, NotChecked=0, Total=6320 [2021-08-21 13:32:30,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5498 states. [2021-08-21 13:32:30,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5498 to 4412. [2021-08-21 13:32:30,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4412 states, 4411 states have (on average 3.3790523690773067) internal successors, (14905), 4411 states have internal predecessors, (14905), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:32:30,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4412 states to 4412 states and 14905 transitions. [2021-08-21 13:32:30,110 INFO L78 Accepts]: Start accepts. Automaton has 4412 states and 14905 transitions. Word has length 39 [2021-08-21 13:32:30,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:32:30,110 INFO L470 AbstractCegarLoop]: Abstraction has 4412 states and 14905 transitions. [2021-08-21 13:32:30,110 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:32:30,110 INFO L276 IsEmpty]: Start isEmpty. Operand 4412 states and 14905 transitions. [2021-08-21 13:32:30,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:32:30,116 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:32:30,116 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:32:30,116 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable237 [2021-08-21 13:32:30,116 INFO L402 AbstractCegarLoop]: === Iteration 239 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:32:30,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:32:30,116 INFO L82 PathProgramCache]: Analyzing trace with hash 1157474840, now seen corresponding path program 239 times [2021-08-21 13:32:30,116 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:32:30,116 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1554975733] [2021-08-21 13:32:30,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:32:30,116 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:32:30,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:32:30,409 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:32:30,409 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:32:30,409 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1554975733] [2021-08-21 13:32:30,409 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1554975733] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:32:30,409 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:32:30,409 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 13:32:30,409 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089877433] [2021-08-21 13:32:30,410 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 13:32:30,410 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:32:30,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 13:32:30,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-08-21 13:32:30,410 INFO L87 Difference]: Start difference. First operand 4412 states and 14905 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:32:32,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:32:32,942 INFO L93 Difference]: Finished difference Result 5472 states and 18429 transitions. [2021-08-21 13:32:32,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2021-08-21 13:32:32,942 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:32:32,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:32:32,952 INFO L225 Difference]: With dead ends: 5472 [2021-08-21 13:32:32,953 INFO L226 Difference]: Without dead ends: 5408 [2021-08-21 13:32:32,953 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1694 ImplicationChecksByTransitivity, 1706.1ms TimeCoverageRelationStatistics Valid=491, Invalid=5361, Unknown=0, NotChecked=0, Total=5852 [2021-08-21 13:32:32,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5408 states. [2021-08-21 13:32:33,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5408 to 4394. [2021-08-21 13:32:33,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4394 states, 4393 states have (on average 3.3826542226269063) internal successors, (14860), 4393 states have internal predecessors, (14860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:32:33,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4394 states to 4394 states and 14860 transitions. [2021-08-21 13:32:33,014 INFO L78 Accepts]: Start accepts. Automaton has 4394 states and 14860 transitions. Word has length 39 [2021-08-21 13:32:33,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:32:33,014 INFO L470 AbstractCegarLoop]: Abstraction has 4394 states and 14860 transitions. [2021-08-21 13:32:33,014 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:32:33,015 INFO L276 IsEmpty]: Start isEmpty. Operand 4394 states and 14860 transitions. [2021-08-21 13:32:33,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:32:33,020 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:32:33,020 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:32:33,020 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable238 [2021-08-21 13:32:33,020 INFO L402 AbstractCegarLoop]: === Iteration 240 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:32:33,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:32:33,020 INFO L82 PathProgramCache]: Analyzing trace with hash 1669265880, now seen corresponding path program 240 times [2021-08-21 13:32:33,020 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:32:33,021 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1938857783] [2021-08-21 13:32:33,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:32:33,021 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:32:33,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:32:33,319 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:32:33,319 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:32:33,319 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1938857783] [2021-08-21 13:32:33,320 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1938857783] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:32:33,320 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:32:33,320 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 13:32:33,320 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708694979] [2021-08-21 13:32:33,320 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 13:32:33,320 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:32:33,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 13:32:33,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-08-21 13:32:33,320 INFO L87 Difference]: Start difference. First operand 4394 states and 14860 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:32:34,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:32:34,946 INFO L93 Difference]: Finished difference Result 5314 states and 17970 transitions. [2021-08-21 13:32:34,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2021-08-21 13:32:34,947 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:32:34,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:32:34,957 INFO L225 Difference]: With dead ends: 5314 [2021-08-21 13:32:34,957 INFO L226 Difference]: Without dead ends: 5247 [2021-08-21 13:32:34,958 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 787 ImplicationChecksByTransitivity, 997.6ms TimeCoverageRelationStatistics Valid=296, Invalid=3010, Unknown=0, NotChecked=0, Total=3306 [2021-08-21 13:32:34,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5247 states. [2021-08-21 13:32:35,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5247 to 4412. [2021-08-21 13:32:35,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4412 states, 4411 states have (on average 3.378372251190206) internal successors, (14902), 4411 states have internal predecessors, (14902), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:32:35,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4412 states to 4412 states and 14902 transitions. [2021-08-21 13:32:35,025 INFO L78 Accepts]: Start accepts. Automaton has 4412 states and 14902 transitions. Word has length 39 [2021-08-21 13:32:35,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:32:35,026 INFO L470 AbstractCegarLoop]: Abstraction has 4412 states and 14902 transitions. [2021-08-21 13:32:35,026 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:32:35,026 INFO L276 IsEmpty]: Start isEmpty. Operand 4412 states and 14902 transitions. [2021-08-21 13:32:35,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:32:35,031 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:32:35,031 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:32:35,031 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable239 [2021-08-21 13:32:35,031 INFO L402 AbstractCegarLoop]: === Iteration 241 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:32:35,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:32:35,032 INFO L82 PathProgramCache]: Analyzing trace with hash 2027336088, now seen corresponding path program 241 times [2021-08-21 13:32:35,032 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:32:35,032 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [664878970] [2021-08-21 13:32:35,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:32:35,032 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:32:35,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:32:35,369 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:32:35,369 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:32:35,369 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [664878970] [2021-08-21 13:32:35,369 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [664878970] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:32:35,369 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:32:35,369 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 13:32:35,369 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841294495] [2021-08-21 13:32:35,370 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 13:32:35,370 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:32:35,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 13:32:35,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-08-21 13:32:35,370 INFO L87 Difference]: Start difference. First operand 4412 states and 14902 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:32:36,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:32:36,989 INFO L93 Difference]: Finished difference Result 5331 states and 17974 transitions. [2021-08-21 13:32:36,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2021-08-21 13:32:36,989 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:32:36,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:32:37,000 INFO L225 Difference]: With dead ends: 5331 [2021-08-21 13:32:37,000 INFO L226 Difference]: Without dead ends: 5256 [2021-08-21 13:32:37,001 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 827 ImplicationChecksByTransitivity, 1011.3ms TimeCoverageRelationStatistics Valid=302, Invalid=3120, Unknown=0, NotChecked=0, Total=3422 [2021-08-21 13:32:37,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5256 states. [2021-08-21 13:32:37,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5256 to 4400. [2021-08-21 13:32:37,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4400 states, 4399 states have (on average 3.380313707660832) internal successors, (14870), 4399 states have internal predecessors, (14870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:32:37,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4400 states to 4400 states and 14870 transitions. [2021-08-21 13:32:37,068 INFO L78 Accepts]: Start accepts. Automaton has 4400 states and 14870 transitions. Word has length 39 [2021-08-21 13:32:37,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:32:37,068 INFO L470 AbstractCegarLoop]: Abstraction has 4400 states and 14870 transitions. [2021-08-21 13:32:37,068 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:32:37,068 INFO L276 IsEmpty]: Start isEmpty. Operand 4400 states and 14870 transitions. [2021-08-21 13:32:37,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:32:37,074 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:32:37,074 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:32:37,074 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable240 [2021-08-21 13:32:37,074 INFO L402 AbstractCegarLoop]: === Iteration 242 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:32:37,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:32:37,075 INFO L82 PathProgramCache]: Analyzing trace with hash -639326154, now seen corresponding path program 242 times [2021-08-21 13:32:37,075 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:32:37,075 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1887123374] [2021-08-21 13:32:37,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:32:37,075 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:32:37,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:32:37,367 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:32:37,367 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:32:37,367 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1887123374] [2021-08-21 13:32:37,367 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1887123374] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:32:37,367 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:32:37,367 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 13:32:37,368 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919147986] [2021-08-21 13:32:37,368 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 13:32:37,368 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:32:37,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 13:32:37,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-08-21 13:32:37,368 INFO L87 Difference]: Start difference. First operand 4400 states and 14870 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:32:39,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:32:39,611 INFO L93 Difference]: Finished difference Result 5490 states and 18381 transitions. [2021-08-21 13:32:39,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2021-08-21 13:32:39,611 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:32:39,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:32:39,622 INFO L225 Difference]: With dead ends: 5490 [2021-08-21 13:32:39,622 INFO L226 Difference]: Without dead ends: 5447 [2021-08-21 13:32:39,623 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1479 ImplicationChecksByTransitivity, 1476.9ms TimeCoverageRelationStatistics Valid=440, Invalid=4816, Unknown=0, NotChecked=0, Total=5256 [2021-08-21 13:32:39,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5447 states. [2021-08-21 13:32:39,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5447 to 4409. [2021-08-21 13:32:39,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4409 states, 4408 states have (on average 3.378856624319419) internal successors, (14894), 4408 states have internal predecessors, (14894), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:32:39,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4409 states to 4409 states and 14894 transitions. [2021-08-21 13:32:39,690 INFO L78 Accepts]: Start accepts. Automaton has 4409 states and 14894 transitions. Word has length 39 [2021-08-21 13:32:39,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:32:39,690 INFO L470 AbstractCegarLoop]: Abstraction has 4409 states and 14894 transitions. [2021-08-21 13:32:39,690 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:32:39,690 INFO L276 IsEmpty]: Start isEmpty. Operand 4409 states and 14894 transitions. [2021-08-21 13:32:39,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:32:39,696 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:32:39,696 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:32:39,696 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable241 [2021-08-21 13:32:39,696 INFO L402 AbstractCegarLoop]: === Iteration 243 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:32:39,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:32:39,697 INFO L82 PathProgramCache]: Analyzing trace with hash 1875042840, now seen corresponding path program 243 times [2021-08-21 13:32:39,697 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:32:39,697 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [33619001] [2021-08-21 13:32:39,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:32:39,697 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:32:39,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:32:39,991 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:32:39,992 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:32:39,992 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [33619001] [2021-08-21 13:32:39,992 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [33619001] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:32:39,992 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:32:39,992 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 13:32:39,992 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973627354] [2021-08-21 13:32:39,992 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 13:32:39,992 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:32:39,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 13:32:39,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-08-21 13:32:39,992 INFO L87 Difference]: Start difference. First operand 4409 states and 14894 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:32:42,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:32:42,214 INFO L93 Difference]: Finished difference Result 5478 states and 18343 transitions. [2021-08-21 13:32:42,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2021-08-21 13:32:42,215 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:32:42,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:32:42,226 INFO L225 Difference]: With dead ends: 5478 [2021-08-21 13:32:42,226 INFO L226 Difference]: Without dead ends: 5426 [2021-08-21 13:32:42,226 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1425 ImplicationChecksByTransitivity, 1460.4ms TimeCoverageRelationStatistics Valid=432, Invalid=4680, Unknown=0, NotChecked=0, Total=5112 [2021-08-21 13:32:42,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5426 states. [2021-08-21 13:32:42,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5426 to 4403. [2021-08-21 13:32:42,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4403 states, 4402 states have (on average 3.379827351203998) internal successors, (14878), 4402 states have internal predecessors, (14878), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:32:42,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4403 states to 4403 states and 14878 transitions. [2021-08-21 13:32:42,294 INFO L78 Accepts]: Start accepts. Automaton has 4403 states and 14878 transitions. Word has length 39 [2021-08-21 13:32:42,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:32:42,294 INFO L470 AbstractCegarLoop]: Abstraction has 4403 states and 14878 transitions. [2021-08-21 13:32:42,294 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:32:42,294 INFO L276 IsEmpty]: Start isEmpty. Operand 4403 states and 14878 transitions. [2021-08-21 13:32:42,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:32:42,300 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:32:42,300 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:32:42,300 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable242 [2021-08-21 13:32:42,300 INFO L402 AbstractCegarLoop]: === Iteration 244 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:32:42,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:32:42,300 INFO L82 PathProgramCache]: Analyzing trace with hash 2118221912, now seen corresponding path program 244 times [2021-08-21 13:32:42,300 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:32:42,300 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2916038] [2021-08-21 13:32:42,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:32:42,300 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:32:42,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:32:42,592 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:32:42,592 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:32:42,592 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2916038] [2021-08-21 13:32:42,592 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2916038] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:32:42,593 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:32:42,593 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 13:32:42,593 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [579218109] [2021-08-21 13:32:42,593 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 13:32:42,593 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:32:42,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 13:32:42,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-08-21 13:32:42,593 INFO L87 Difference]: Start difference. First operand 4403 states and 14878 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:32:44,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:32:44,356 INFO L93 Difference]: Finished difference Result 5475 states and 18297 transitions. [2021-08-21 13:32:44,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-08-21 13:32:44,356 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:32:44,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:32:44,367 INFO L225 Difference]: With dead ends: 5475 [2021-08-21 13:32:44,367 INFO L226 Difference]: Without dead ends: 5412 [2021-08-21 13:32:44,368 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 958 ImplicationChecksByTransitivity, 1132.5ms TimeCoverageRelationStatistics Valid=329, Invalid=3453, Unknown=0, NotChecked=0, Total=3782 [2021-08-21 13:32:44,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5412 states. [2021-08-21 13:32:44,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5412 to 4403. [2021-08-21 13:32:44,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4403 states, 4402 states have (on average 3.379145842798728) internal successors, (14875), 4402 states have internal predecessors, (14875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:32:44,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4403 states to 4403 states and 14875 transitions. [2021-08-21 13:32:44,431 INFO L78 Accepts]: Start accepts. Automaton has 4403 states and 14875 transitions. Word has length 39 [2021-08-21 13:32:44,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:32:44,432 INFO L470 AbstractCegarLoop]: Abstraction has 4403 states and 14875 transitions. [2021-08-21 13:32:44,432 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:32:44,432 INFO L276 IsEmpty]: Start isEmpty. Operand 4403 states and 14875 transitions. [2021-08-21 13:32:44,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:32:44,437 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:32:44,437 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:32:44,437 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable243 [2021-08-21 13:32:44,437 INFO L402 AbstractCegarLoop]: === Iteration 245 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:32:44,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:32:44,438 INFO L82 PathProgramCache]: Analyzing trace with hash 190580154, now seen corresponding path program 245 times [2021-08-21 13:32:44,438 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:32:44,438 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1797795500] [2021-08-21 13:32:44,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:32:44,438 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:32:44,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:32:44,726 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:32:44,726 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:32:44,726 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1797795500] [2021-08-21 13:32:44,727 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1797795500] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:32:44,727 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:32:44,727 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 13:32:44,727 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511616645] [2021-08-21 13:32:44,727 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 13:32:44,727 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:32:44,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 13:32:44,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-08-21 13:32:44,727 INFO L87 Difference]: Start difference. First operand 4403 states and 14875 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:32:46,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:32:46,400 INFO L93 Difference]: Finished difference Result 5380 states and 18081 transitions. [2021-08-21 13:32:46,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-08-21 13:32:46,400 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:32:46,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:32:46,411 INFO L225 Difference]: With dead ends: 5380 [2021-08-21 13:32:46,411 INFO L226 Difference]: Without dead ends: 5304 [2021-08-21 13:32:46,412 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 867 ImplicationChecksByTransitivity, 1041.7ms TimeCoverageRelationStatistics Valid=312, Invalid=3228, Unknown=0, NotChecked=0, Total=3540 [2021-08-21 13:32:46,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5304 states. [2021-08-21 13:32:46,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5304 to 4394. [2021-08-21 13:32:46,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4394 states, 4393 states have (on average 3.3812884133849304) internal successors, (14854), 4393 states have internal predecessors, (14854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:32:46,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4394 states to 4394 states and 14854 transitions. [2021-08-21 13:32:46,533 INFO L78 Accepts]: Start accepts. Automaton has 4394 states and 14854 transitions. Word has length 39 [2021-08-21 13:32:46,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:32:46,533 INFO L470 AbstractCegarLoop]: Abstraction has 4394 states and 14854 transitions. [2021-08-21 13:32:46,533 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:32:46,534 INFO L276 IsEmpty]: Start isEmpty. Operand 4394 states and 14854 transitions. [2021-08-21 13:32:46,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:32:46,539 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:32:46,540 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:32:46,540 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable244 [2021-08-21 13:32:46,540 INFO L402 AbstractCegarLoop]: === Iteration 246 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:32:46,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:32:46,540 INFO L82 PathProgramCache]: Analyzing trace with hash 608825786, now seen corresponding path program 246 times [2021-08-21 13:32:46,540 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:32:46,540 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1060947444] [2021-08-21 13:32:46,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:32:46,540 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:32:46,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:32:46,843 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:32:46,843 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:32:46,843 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1060947444] [2021-08-21 13:32:46,843 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1060947444] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:32:46,844 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:32:46,844 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 13:32:46,844 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1089093129] [2021-08-21 13:32:46,844 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 13:32:46,844 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:32:46,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 13:32:46,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-08-21 13:32:46,844 INFO L87 Difference]: Start difference. First operand 4394 states and 14854 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:32:48,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:32:48,861 INFO L93 Difference]: Finished difference Result 5557 states and 18619 transitions. [2021-08-21 13:32:48,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2021-08-21 13:32:48,861 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:32:48,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:32:48,907 INFO L225 Difference]: With dead ends: 5557 [2021-08-21 13:32:48,908 INFO L226 Difference]: Without dead ends: 5420 [2021-08-21 13:32:48,908 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1533 ImplicationChecksByTransitivity, 1340.2ms TimeCoverageRelationStatistics Valid=438, Invalid=4964, Unknown=0, NotChecked=0, Total=5402 [2021-08-21 13:32:48,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5420 states. [2021-08-21 13:32:48,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5420 to 4400. [2021-08-21 13:32:48,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4400 states, 4399 states have (on average 3.380313707660832) internal successors, (14870), 4399 states have internal predecessors, (14870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:32:48,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4400 states to 4400 states and 14870 transitions. [2021-08-21 13:32:48,970 INFO L78 Accepts]: Start accepts. Automaton has 4400 states and 14870 transitions. Word has length 39 [2021-08-21 13:32:48,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:32:48,970 INFO L470 AbstractCegarLoop]: Abstraction has 4400 states and 14870 transitions. [2021-08-21 13:32:48,970 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:32:48,970 INFO L276 IsEmpty]: Start isEmpty. Operand 4400 states and 14870 transitions. [2021-08-21 13:32:48,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:32:48,975 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:32:48,976 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:32:48,976 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable245 [2021-08-21 13:32:48,976 INFO L402 AbstractCegarLoop]: === Iteration 247 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:32:48,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:32:48,976 INFO L82 PathProgramCache]: Analyzing trace with hash -132126312, now seen corresponding path program 247 times [2021-08-21 13:32:48,976 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:32:48,976 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1050984254] [2021-08-21 13:32:48,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:32:48,976 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:32:48,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:32:49,227 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:32:49,228 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:32:49,228 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1050984254] [2021-08-21 13:32:49,228 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1050984254] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:32:49,228 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:32:49,228 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 13:32:49,228 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079209015] [2021-08-21 13:32:49,228 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 13:32:49,228 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:32:49,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 13:32:49,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-08-21 13:32:49,228 INFO L87 Difference]: Start difference. First operand 4400 states and 14870 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:32:51,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:32:51,042 INFO L93 Difference]: Finished difference Result 5529 states and 18482 transitions. [2021-08-21 13:32:51,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2021-08-21 13:32:51,042 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:32:51,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:32:51,053 INFO L225 Difference]: With dead ends: 5529 [2021-08-21 13:32:51,054 INFO L226 Difference]: Without dead ends: 5465 [2021-08-21 13:32:51,054 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1427 ImplicationChecksByTransitivity, 1220.6ms TimeCoverageRelationStatistics Valid=429, Invalid=4683, Unknown=0, NotChecked=0, Total=5112 [2021-08-21 13:32:51,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5465 states. [2021-08-21 13:32:51,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5465 to 4409. [2021-08-21 13:32:51,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4409 states, 4408 states have (on average 3.378856624319419) internal successors, (14894), 4408 states have internal predecessors, (14894), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:32:51,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4409 states to 4409 states and 14894 transitions. [2021-08-21 13:32:51,194 INFO L78 Accepts]: Start accepts. Automaton has 4409 states and 14894 transitions. Word has length 39 [2021-08-21 13:32:51,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:32:51,194 INFO L470 AbstractCegarLoop]: Abstraction has 4409 states and 14894 transitions. [2021-08-21 13:32:51,194 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:32:51,194 INFO L276 IsEmpty]: Start isEmpty. Operand 4409 states and 14894 transitions. [2021-08-21 13:32:51,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:32:51,200 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:32:51,200 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:32:51,201 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable246 [2021-08-21 13:32:51,201 INFO L402 AbstractCegarLoop]: === Iteration 248 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:32:51,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:32:51,201 INFO L82 PathProgramCache]: Analyzing trace with hash -1669545542, now seen corresponding path program 248 times [2021-08-21 13:32:51,201 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:32:51,201 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [494079885] [2021-08-21 13:32:51,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:32:51,201 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:32:51,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:32:51,461 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:32:51,461 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:32:51,461 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [494079885] [2021-08-21 13:32:51,461 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [494079885] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:32:51,461 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:32:51,461 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 13:32:51,461 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24519082] [2021-08-21 13:32:51,462 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 13:32:51,462 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:32:51,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 13:32:51,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-08-21 13:32:51,462 INFO L87 Difference]: Start difference. First operand 4409 states and 14894 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:32:52,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:32:52,921 INFO L93 Difference]: Finished difference Result 5469 states and 18300 transitions. [2021-08-21 13:32:52,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-08-21 13:32:52,922 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:32:52,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:32:52,933 INFO L225 Difference]: With dead ends: 5469 [2021-08-21 13:32:52,933 INFO L226 Difference]: Without dead ends: 5406 [2021-08-21 13:32:52,934 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 870 ImplicationChecksByTransitivity, 914.9ms TimeCoverageRelationStatistics Valid=307, Invalid=3233, Unknown=0, NotChecked=0, Total=3540 [2021-08-21 13:32:52,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5406 states. [2021-08-21 13:32:52,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5406 to 4409. [2021-08-21 13:32:53,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4409 states, 4408 states have (on average 3.378176043557169) internal successors, (14891), 4408 states have internal predecessors, (14891), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:32:53,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4409 states to 4409 states and 14891 transitions. [2021-08-21 13:32:53,010 INFO L78 Accepts]: Start accepts. Automaton has 4409 states and 14891 transitions. Word has length 39 [2021-08-21 13:32:53,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:32:53,010 INFO L470 AbstractCegarLoop]: Abstraction has 4409 states and 14891 transitions. [2021-08-21 13:32:53,010 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:32:53,010 INFO L276 IsEmpty]: Start isEmpty. Operand 4409 states and 14891 transitions. [2021-08-21 13:32:53,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:32:53,016 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:32:53,016 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:32:53,016 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable247 [2021-08-21 13:32:53,016 INFO L402 AbstractCegarLoop]: === Iteration 249 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:32:53,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:32:53,017 INFO L82 PathProgramCache]: Analyzing trace with hash 697779996, now seen corresponding path program 249 times [2021-08-21 13:32:53,017 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:32:53,017 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [879585154] [2021-08-21 13:32:53,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:32:53,017 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:32:53,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:32:53,269 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:32:53,269 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:32:53,269 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [879585154] [2021-08-21 13:32:53,269 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [879585154] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:32:53,269 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:32:53,269 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 13:32:53,269 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745891227] [2021-08-21 13:32:53,269 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 13:32:53,269 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:32:53,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 13:32:53,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-08-21 13:32:53,270 INFO L87 Difference]: Start difference. First operand 4409 states and 14891 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:32:54,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:32:54,954 INFO L93 Difference]: Finished difference Result 5488 states and 18346 transitions. [2021-08-21 13:32:54,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2021-08-21 13:32:54,954 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:32:54,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:32:54,966 INFO L225 Difference]: With dead ends: 5488 [2021-08-21 13:32:54,966 INFO L226 Difference]: Without dead ends: 5418 [2021-08-21 13:32:54,967 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 918 ImplicationChecksByTransitivity, 1045.7ms TimeCoverageRelationStatistics Valid=318, Invalid=3342, Unknown=0, NotChecked=0, Total=3660 [2021-08-21 13:32:54,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5418 states. [2021-08-21 13:32:55,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5418 to 4406. [2021-08-21 13:32:55,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4406 states, 4405 states have (on average 3.378660612939841) internal successors, (14883), 4405 states have internal predecessors, (14883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:32:55,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4406 states to 4406 states and 14883 transitions. [2021-08-21 13:32:55,040 INFO L78 Accepts]: Start accepts. Automaton has 4406 states and 14883 transitions. Word has length 39 [2021-08-21 13:32:55,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:32:55,040 INFO L470 AbstractCegarLoop]: Abstraction has 4406 states and 14883 transitions. [2021-08-21 13:32:55,040 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:32:55,040 INFO L276 IsEmpty]: Start isEmpty. Operand 4406 states and 14883 transitions. [2021-08-21 13:32:55,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:32:55,046 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:32:55,046 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:32:55,046 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable248 [2021-08-21 13:32:55,046 INFO L402 AbstractCegarLoop]: === Iteration 250 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:32:55,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:32:55,046 INFO L82 PathProgramCache]: Analyzing trace with hash -1317904204, now seen corresponding path program 250 times [2021-08-21 13:32:55,046 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:32:55,046 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1735279419] [2021-08-21 13:32:55,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:32:55,046 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:32:55,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:32:55,326 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:32:55,326 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:32:55,326 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1735279419] [2021-08-21 13:32:55,326 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1735279419] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:32:55,327 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:32:55,327 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-08-21 13:32:55,327 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [852528831] [2021-08-21 13:32:55,327 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-08-21 13:32:55,327 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:32:55,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-08-21 13:32:55,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-08-21 13:32:55,327 INFO L87 Difference]: Start difference. First operand 4406 states and 14883 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:32:56,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:32:56,739 INFO L93 Difference]: Finished difference Result 5326 states and 17971 transitions. [2021-08-21 13:32:56,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-08-21 13:32:56,740 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:32:56,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:32:56,750 INFO L225 Difference]: With dead ends: 5326 [2021-08-21 13:32:56,750 INFO L226 Difference]: Without dead ends: 5250 [2021-08-21 13:32:56,751 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 750 ImplicationChecksByTransitivity, 924.8ms TimeCoverageRelationStatistics Valid=285, Invalid=2795, Unknown=0, NotChecked=0, Total=3080 [2021-08-21 13:32:56,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5250 states. [2021-08-21 13:32:56,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5250 to 4420. [2021-08-21 13:32:56,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4420 states, 4419 states have (on average 3.374745417515275) internal successors, (14913), 4419 states have internal predecessors, (14913), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:32:56,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4420 states to 4420 states and 14913 transitions. [2021-08-21 13:32:56,818 INFO L78 Accepts]: Start accepts. Automaton has 4420 states and 14913 transitions. Word has length 39 [2021-08-21 13:32:56,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:32:56,818 INFO L470 AbstractCegarLoop]: Abstraction has 4420 states and 14913 transitions. [2021-08-21 13:32:56,818 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:32:56,818 INFO L276 IsEmpty]: Start isEmpty. Operand 4420 states and 14913 transitions. [2021-08-21 13:32:56,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:32:56,825 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:32:56,825 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:32:56,825 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable249 [2021-08-21 13:32:56,825 INFO L402 AbstractCegarLoop]: === Iteration 251 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:32:56,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:32:56,825 INFO L82 PathProgramCache]: Analyzing trace with hash 1429140758, now seen corresponding path program 251 times [2021-08-21 13:32:56,826 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:32:56,826 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [109711914] [2021-08-21 13:32:56,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:32:56,826 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:32:56,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:32:57,126 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:32:57,126 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:32:57,126 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [109711914] [2021-08-21 13:32:57,126 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [109711914] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:32:57,126 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:32:57,126 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 13:32:57,126 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1848619679] [2021-08-21 13:32:57,126 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 13:32:57,126 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:32:57,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 13:32:57,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-08-21 13:32:57,127 INFO L87 Difference]: Start difference. First operand 4420 states and 14913 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:32:58,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:32:58,770 INFO L93 Difference]: Finished difference Result 5365 states and 18043 transitions. [2021-08-21 13:32:58,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2021-08-21 13:32:58,770 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:32:58,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:32:58,781 INFO L225 Difference]: With dead ends: 5365 [2021-08-21 13:32:58,781 INFO L226 Difference]: Without dead ends: 5266 [2021-08-21 13:32:58,782 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 829 ImplicationChecksByTransitivity, 1033.2ms TimeCoverageRelationStatistics Valid=301, Invalid=3121, Unknown=0, NotChecked=0, Total=3422 [2021-08-21 13:32:58,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5266 states. [2021-08-21 13:32:58,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5266 to 4388. [2021-08-21 13:32:58,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4388 states, 4387 states have (on average 3.3827216776840667) internal successors, (14840), 4387 states have internal predecessors, (14840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:32:58,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4388 states to 4388 states and 14840 transitions. [2021-08-21 13:32:58,933 INFO L78 Accepts]: Start accepts. Automaton has 4388 states and 14840 transitions. Word has length 39 [2021-08-21 13:32:58,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:32:58,933 INFO L470 AbstractCegarLoop]: Abstraction has 4388 states and 14840 transitions. [2021-08-21 13:32:58,933 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:32:58,933 INFO L276 IsEmpty]: Start isEmpty. Operand 4388 states and 14840 transitions. [2021-08-21 13:32:58,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:32:58,939 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:32:58,939 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:32:58,939 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable250 [2021-08-21 13:32:58,939 INFO L402 AbstractCegarLoop]: === Iteration 252 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:32:58,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:32:58,940 INFO L82 PathProgramCache]: Analyzing trace with hash 1192163142, now seen corresponding path program 252 times [2021-08-21 13:32:58,940 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:32:58,940 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [227667226] [2021-08-21 13:32:58,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:32:58,940 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:32:58,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:32:59,235 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:32:59,235 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:32:59,235 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [227667226] [2021-08-21 13:32:59,235 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [227667226] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:32:59,235 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:32:59,235 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 13:32:59,235 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [561018681] [2021-08-21 13:32:59,235 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 13:32:59,235 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:32:59,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 13:32:59,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-08-21 13:32:59,236 INFO L87 Difference]: Start difference. First operand 4388 states and 14840 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:33:01,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:33:01,135 INFO L93 Difference]: Finished difference Result 5636 states and 18948 transitions. [2021-08-21 13:33:01,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2021-08-21 13:33:01,135 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:33:01,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:33:01,147 INFO L225 Difference]: With dead ends: 5636 [2021-08-21 13:33:01,147 INFO L226 Difference]: Without dead ends: 5569 [2021-08-21 13:33:01,148 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1228 ImplicationChecksByTransitivity, 1222.2ms TimeCoverageRelationStatistics Valid=426, Invalid=4130, Unknown=0, NotChecked=0, Total=4556 [2021-08-21 13:33:01,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5569 states. [2021-08-21 13:33:01,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5569 to 4406. [2021-08-21 13:33:01,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4406 states, 4405 states have (on average 3.379795686719637) internal successors, (14888), 4405 states have internal predecessors, (14888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:33:01,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4406 states to 4406 states and 14888 transitions. [2021-08-21 13:33:01,223 INFO L78 Accepts]: Start accepts. Automaton has 4406 states and 14888 transitions. Word has length 39 [2021-08-21 13:33:01,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:33:01,223 INFO L470 AbstractCegarLoop]: Abstraction has 4406 states and 14888 transitions. [2021-08-21 13:33:01,223 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:33:01,223 INFO L276 IsEmpty]: Start isEmpty. Operand 4406 states and 14888 transitions. [2021-08-21 13:33:01,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:33:01,229 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:33:01,230 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:33:01,230 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable251 [2021-08-21 13:33:01,230 INFO L402 AbstractCegarLoop]: === Iteration 253 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:33:01,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:33:01,230 INFO L82 PathProgramCache]: Analyzing trace with hash 1061568294, now seen corresponding path program 253 times [2021-08-21 13:33:01,231 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:33:01,231 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [298765137] [2021-08-21 13:33:01,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:33:01,231 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:33:01,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:33:01,524 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:33:01,524 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:33:01,524 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [298765137] [2021-08-21 13:33:01,524 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [298765137] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:33:01,524 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:33:01,524 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 13:33:01,524 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1407691601] [2021-08-21 13:33:01,524 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 13:33:01,524 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:33:01,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 13:33:01,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-08-21 13:33:01,525 INFO L87 Difference]: Start difference. First operand 4406 states and 14888 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:33:03,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:33:03,163 INFO L93 Difference]: Finished difference Result 5539 states and 18688 transitions. [2021-08-21 13:33:03,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2021-08-21 13:33:03,163 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:33:03,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:33:03,175 INFO L225 Difference]: With dead ends: 5539 [2021-08-21 13:33:03,176 INFO L226 Difference]: Without dead ends: 5476 [2021-08-21 13:33:03,176 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1179 ImplicationChecksByTransitivity, 1096.0ms TimeCoverageRelationStatistics Valid=419, Invalid=4003, Unknown=0, NotChecked=0, Total=4422 [2021-08-21 13:33:03,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5476 states. [2021-08-21 13:33:03,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5476 to 4406. [2021-08-21 13:33:03,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4406 states, 4405 states have (on average 3.3788876276958004) internal successors, (14884), 4405 states have internal predecessors, (14884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:33:03,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4406 states to 4406 states and 14884 transitions. [2021-08-21 13:33:03,247 INFO L78 Accepts]: Start accepts. Automaton has 4406 states and 14884 transitions. Word has length 39 [2021-08-21 13:33:03,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:33:03,248 INFO L470 AbstractCegarLoop]: Abstraction has 4406 states and 14884 transitions. [2021-08-21 13:33:03,248 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:33:03,248 INFO L276 IsEmpty]: Start isEmpty. Operand 4406 states and 14884 transitions. [2021-08-21 13:33:03,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:33:03,254 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:33:03,254 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:33:03,254 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable252 [2021-08-21 13:33:03,254 INFO L402 AbstractCegarLoop]: === Iteration 254 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:33:03,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:33:03,255 INFO L82 PathProgramCache]: Analyzing trace with hash 925889702, now seen corresponding path program 254 times [2021-08-21 13:33:03,255 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:33:03,255 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1204471470] [2021-08-21 13:33:03,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:33:03,255 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:33:03,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:33:03,560 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:33:03,560 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:33:03,560 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1204471470] [2021-08-21 13:33:03,561 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1204471470] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:33:03,561 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:33:03,561 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 13:33:03,561 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1299209952] [2021-08-21 13:33:03,561 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 13:33:03,561 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:33:03,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 13:33:03,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-08-21 13:33:03,561 INFO L87 Difference]: Start difference. First operand 4406 states and 14884 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:33:06,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:33:06,318 INFO L93 Difference]: Finished difference Result 5805 states and 19318 transitions. [2021-08-21 13:33:06,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2021-08-21 13:33:06,318 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:33:06,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:33:06,330 INFO L225 Difference]: With dead ends: 5805 [2021-08-21 13:33:06,330 INFO L226 Difference]: Without dead ends: 5723 [2021-08-21 13:33:06,331 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2324 ImplicationChecksByTransitivity, 1929.1ms TimeCoverageRelationStatistics Valid=628, Invalid=6854, Unknown=0, NotChecked=0, Total=7482 [2021-08-21 13:33:06,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5723 states. [2021-08-21 13:33:06,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5723 to 4421. [2021-08-21 13:33:06,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4421 states, 4420 states have (on average 3.3762443438914027) internal successors, (14923), 4420 states have internal predecessors, (14923), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:33:06,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4421 states to 4421 states and 14923 transitions. [2021-08-21 13:33:06,398 INFO L78 Accepts]: Start accepts. Automaton has 4421 states and 14923 transitions. Word has length 39 [2021-08-21 13:33:06,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:33:06,398 INFO L470 AbstractCegarLoop]: Abstraction has 4421 states and 14923 transitions. [2021-08-21 13:33:06,398 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:33:06,398 INFO L276 IsEmpty]: Start isEmpty. Operand 4421 states and 14923 transitions. [2021-08-21 13:33:06,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:33:06,403 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:33:06,403 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:33:06,403 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable253 [2021-08-21 13:33:06,404 INFO L402 AbstractCegarLoop]: === Iteration 255 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:33:06,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:33:06,404 INFO L82 PathProgramCache]: Analyzing trace with hash -854708600, now seen corresponding path program 255 times [2021-08-21 13:33:06,404 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:33:06,404 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [174468783] [2021-08-21 13:33:06,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:33:06,404 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:33:06,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:33:06,702 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:33:06,702 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:33:06,702 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [174468783] [2021-08-21 13:33:06,702 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [174468783] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:33:06,702 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:33:06,702 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 13:33:06,702 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [313094199] [2021-08-21 13:33:06,702 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 13:33:06,702 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:33:06,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 13:33:06,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-08-21 13:33:06,703 INFO L87 Difference]: Start difference. First operand 4421 states and 14923 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:33:09,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:33:09,340 INFO L93 Difference]: Finished difference Result 5707 states and 19089 transitions. [2021-08-21 13:33:09,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2021-08-21 13:33:09,341 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:33:09,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:33:09,352 INFO L225 Difference]: With dead ends: 5707 [2021-08-21 13:33:09,353 INFO L226 Difference]: Without dead ends: 5655 [2021-08-21 13:33:09,354 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2124 ImplicationChecksByTransitivity, 1811.3ms TimeCoverageRelationStatistics Valid=596, Invalid=6376, Unknown=0, NotChecked=0, Total=6972 [2021-08-21 13:33:09,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5655 states. [2021-08-21 13:33:09,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5655 to 4413. [2021-08-21 13:33:09,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4413 states, 4412 states have (on average 3.377833182230281) internal successors, (14903), 4412 states have internal predecessors, (14903), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:33:09,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4413 states to 4413 states and 14903 transitions. [2021-08-21 13:33:09,423 INFO L78 Accepts]: Start accepts. Automaton has 4413 states and 14903 transitions. Word has length 39 [2021-08-21 13:33:09,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:33:09,423 INFO L470 AbstractCegarLoop]: Abstraction has 4413 states and 14903 transitions. [2021-08-21 13:33:09,423 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:33:09,423 INFO L276 IsEmpty]: Start isEmpty. Operand 4413 states and 14903 transitions. [2021-08-21 13:33:09,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:33:09,429 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:33:09,429 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:33:09,429 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable254 [2021-08-21 13:33:09,429 INFO L402 AbstractCegarLoop]: === Iteration 256 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:33:09,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:33:09,429 INFO L82 PathProgramCache]: Analyzing trace with hash 1844373272, now seen corresponding path program 256 times [2021-08-21 13:33:09,429 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:33:09,429 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1326836244] [2021-08-21 13:33:09,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:33:09,430 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:33:09,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:33:09,727 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:33:09,728 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:33:09,728 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1326836244] [2021-08-21 13:33:09,728 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1326836244] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:33:09,728 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:33:09,728 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 13:33:09,728 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253227018] [2021-08-21 13:33:09,728 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 13:33:09,728 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:33:09,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 13:33:09,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-08-21 13:33:09,729 INFO L87 Difference]: Start difference. First operand 4413 states and 14903 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:33:11,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:33:11,778 INFO L93 Difference]: Finished difference Result 5676 states and 18986 transitions. [2021-08-21 13:33:11,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2021-08-21 13:33:11,779 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:33:11,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:33:11,790 INFO L225 Difference]: With dead ends: 5676 [2021-08-21 13:33:11,790 INFO L226 Difference]: Without dead ends: 5621 [2021-08-21 13:33:11,791 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1326 ImplicationChecksByTransitivity, 1365.5ms TimeCoverageRelationStatistics Valid=455, Invalid=4375, Unknown=0, NotChecked=0, Total=4830 [2021-08-21 13:33:11,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5621 states. [2021-08-21 13:33:11,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5621 to 4415. [2021-08-21 13:33:11,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4415 states, 4414 states have (on average 3.3769823289533303) internal successors, (14906), 4414 states have internal predecessors, (14906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:33:11,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4415 states to 4415 states and 14906 transitions. [2021-08-21 13:33:11,859 INFO L78 Accepts]: Start accepts. Automaton has 4415 states and 14906 transitions. Word has length 39 [2021-08-21 13:33:11,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:33:11,860 INFO L470 AbstractCegarLoop]: Abstraction has 4415 states and 14906 transitions. [2021-08-21 13:33:11,860 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:33:11,860 INFO L276 IsEmpty]: Start isEmpty. Operand 4415 states and 14906 transitions. [2021-08-21 13:33:11,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:33:11,866 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:33:11,866 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:33:11,866 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable255 [2021-08-21 13:33:11,866 INFO L402 AbstractCegarLoop]: === Iteration 257 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:33:11,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:33:11,866 INFO L82 PathProgramCache]: Analyzing trace with hash -1277941802, now seen corresponding path program 257 times [2021-08-21 13:33:11,866 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:33:11,866 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2069405614] [2021-08-21 13:33:11,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:33:11,866 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:33:11,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:33:12,162 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:33:12,162 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:33:12,162 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2069405614] [2021-08-21 13:33:12,162 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2069405614] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:33:12,162 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:33:12,162 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 13:33:12,163 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1734983563] [2021-08-21 13:33:12,163 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 13:33:12,163 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:33:12,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 13:33:12,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-08-21 13:33:12,163 INFO L87 Difference]: Start difference. First operand 4415 states and 14906 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:33:14,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:33:14,054 INFO L93 Difference]: Finished difference Result 5611 states and 18834 transitions. [2021-08-21 13:33:14,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2021-08-21 13:33:14,055 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:33:14,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:33:14,066 INFO L225 Difference]: With dead ends: 5611 [2021-08-21 13:33:14,066 INFO L226 Difference]: Without dead ends: 5565 [2021-08-21 13:33:14,067 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1175 ImplicationChecksByTransitivity, 1243.9ms TimeCoverageRelationStatistics Valid=425, Invalid=3997, Unknown=0, NotChecked=0, Total=4422 [2021-08-21 13:33:14,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5565 states. [2021-08-21 13:33:14,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5565 to 4419. [2021-08-21 13:33:14,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4419 states, 4418 states have (on average 3.3757356269805343) internal successors, (14914), 4418 states have internal predecessors, (14914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:33:14,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4419 states to 4419 states and 14914 transitions. [2021-08-21 13:33:14,141 INFO L78 Accepts]: Start accepts. Automaton has 4419 states and 14914 transitions. Word has length 39 [2021-08-21 13:33:14,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:33:14,141 INFO L470 AbstractCegarLoop]: Abstraction has 4419 states and 14914 transitions. [2021-08-21 13:33:14,141 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:33:14,141 INFO L276 IsEmpty]: Start isEmpty. Operand 4419 states and 14914 transitions. [2021-08-21 13:33:14,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:33:14,148 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:33:14,148 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:33:14,148 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable256 [2021-08-21 13:33:14,148 INFO L402 AbstractCegarLoop]: === Iteration 258 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:33:14,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:33:14,148 INFO L82 PathProgramCache]: Analyzing trace with hash -1525407964, now seen corresponding path program 258 times [2021-08-21 13:33:14,148 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:33:14,148 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [853394490] [2021-08-21 13:33:14,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:33:14,148 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:33:14,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:33:14,413 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:33:14,414 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:33:14,414 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [853394490] [2021-08-21 13:33:14,414 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [853394490] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:33:14,414 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:33:14,414 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 13:33:14,414 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1268324186] [2021-08-21 13:33:14,414 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 13:33:14,414 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:33:14,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 13:33:14,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-08-21 13:33:14,414 INFO L87 Difference]: Start difference. First operand 4419 states and 14914 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:33:16,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:33:16,478 INFO L93 Difference]: Finished difference Result 5583 states and 18783 transitions. [2021-08-21 13:33:16,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2021-08-21 13:33:16,479 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:33:16,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:33:16,490 INFO L225 Difference]: With dead ends: 5583 [2021-08-21 13:33:16,490 INFO L226 Difference]: Without dead ends: 5534 [2021-08-21 13:33:16,491 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1224 ImplicationChecksByTransitivity, 1398.0ms TimeCoverageRelationStatistics Valid=437, Invalid=4119, Unknown=0, NotChecked=0, Total=4556 [2021-08-21 13:33:16,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5534 states. [2021-08-21 13:33:16,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5534 to 4409. [2021-08-21 13:33:16,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4409 states, 4408 states have (on average 3.3790834845735027) internal successors, (14895), 4408 states have internal predecessors, (14895), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:33:16,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4409 states to 4409 states and 14895 transitions. [2021-08-21 13:33:16,557 INFO L78 Accepts]: Start accepts. Automaton has 4409 states and 14895 transitions. Word has length 39 [2021-08-21 13:33:16,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:33:16,557 INFO L470 AbstractCegarLoop]: Abstraction has 4409 states and 14895 transitions. [2021-08-21 13:33:16,557 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:33:16,558 INFO L276 IsEmpty]: Start isEmpty. Operand 4409 states and 14895 transitions. [2021-08-21 13:33:16,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:33:16,563 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:33:16,563 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:33:16,563 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable257 [2021-08-21 13:33:16,564 INFO L402 AbstractCegarLoop]: === Iteration 259 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:33:16,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:33:16,564 INFO L82 PathProgramCache]: Analyzing trace with hash -66868668, now seen corresponding path program 259 times [2021-08-21 13:33:16,564 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:33:16,564 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1931511273] [2021-08-21 13:33:16,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:33:16,564 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:33:16,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:33:16,858 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:33:16,858 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:33:16,858 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1931511273] [2021-08-21 13:33:16,858 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1931511273] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:33:16,858 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:33:16,858 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 13:33:16,858 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120868280] [2021-08-21 13:33:16,858 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 13:33:16,858 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:33:16,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 13:33:16,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-08-21 13:33:16,859 INFO L87 Difference]: Start difference. First operand 4409 states and 14895 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:33:18,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:33:18,893 INFO L93 Difference]: Finished difference Result 5682 states and 19072 transitions. [2021-08-21 13:33:18,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2021-08-21 13:33:18,894 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:33:18,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:33:18,905 INFO L225 Difference]: With dead ends: 5682 [2021-08-21 13:33:18,905 INFO L226 Difference]: Without dead ends: 5615 [2021-08-21 13:33:18,905 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1231 ImplicationChecksByTransitivity, 1286.0ms TimeCoverageRelationStatistics Valid=410, Invalid=4146, Unknown=0, NotChecked=0, Total=4556 [2021-08-21 13:33:18,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5615 states. [2021-08-21 13:33:18,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5615 to 4427. [2021-08-21 13:33:18,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4427 states, 4426 states have (on average 3.3748305467690916) internal successors, (14937), 4426 states have internal predecessors, (14937), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:33:18,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4427 states to 4427 states and 14937 transitions. [2021-08-21 13:33:18,975 INFO L78 Accepts]: Start accepts. Automaton has 4427 states and 14937 transitions. Word has length 39 [2021-08-21 13:33:18,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:33:18,975 INFO L470 AbstractCegarLoop]: Abstraction has 4427 states and 14937 transitions. [2021-08-21 13:33:18,975 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:33:18,975 INFO L276 IsEmpty]: Start isEmpty. Operand 4427 states and 14937 transitions. [2021-08-21 13:33:18,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:33:18,981 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:33:18,981 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:33:18,981 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable258 [2021-08-21 13:33:18,981 INFO L402 AbstractCegarLoop]: === Iteration 260 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:33:18,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:33:18,981 INFO L82 PathProgramCache]: Analyzing trace with hash 291201540, now seen corresponding path program 260 times [2021-08-21 13:33:18,981 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:33:18,981 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [874958764] [2021-08-21 13:33:18,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:33:18,981 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:33:18,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:33:19,282 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:33:19,282 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:33:19,282 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [874958764] [2021-08-21 13:33:19,282 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [874958764] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:33:19,282 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:33:19,282 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 13:33:19,283 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405708189] [2021-08-21 13:33:19,283 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 13:33:19,283 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:33:19,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 13:33:19,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-08-21 13:33:19,283 INFO L87 Difference]: Start difference. First operand 4427 states and 14937 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:33:21,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:33:21,267 INFO L93 Difference]: Finished difference Result 5644 states and 18947 transitions. [2021-08-21 13:33:21,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2021-08-21 13:33:21,267 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:33:21,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:33:21,278 INFO L225 Difference]: With dead ends: 5644 [2021-08-21 13:33:21,279 INFO L226 Difference]: Without dead ends: 5569 [2021-08-21 13:33:21,279 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1181 ImplicationChecksByTransitivity, 1302.0ms TimeCoverageRelationStatistics Valid=403, Invalid=4019, Unknown=0, NotChecked=0, Total=4422 [2021-08-21 13:33:21,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5569 states. [2021-08-21 13:33:21,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5569 to 4427. [2021-08-21 13:33:21,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4427 states, 4426 states have (on average 3.3734749209218258) internal successors, (14931), 4426 states have internal predecessors, (14931), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:33:21,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4427 states to 4427 states and 14931 transitions. [2021-08-21 13:33:21,345 INFO L78 Accepts]: Start accepts. Automaton has 4427 states and 14931 transitions. Word has length 39 [2021-08-21 13:33:21,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:33:21,346 INFO L470 AbstractCegarLoop]: Abstraction has 4427 states and 14931 transitions. [2021-08-21 13:33:21,346 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:33:21,346 INFO L276 IsEmpty]: Start isEmpty. Operand 4427 states and 14931 transitions. [2021-08-21 13:33:21,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:33:21,351 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:33:21,352 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:33:21,352 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable259 [2021-08-21 13:33:21,352 INFO L402 AbstractCegarLoop]: === Iteration 261 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:33:21,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:33:21,352 INFO L82 PathProgramCache]: Analyzing trace with hash 1919506594, now seen corresponding path program 261 times [2021-08-21 13:33:21,352 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:33:21,352 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1501427256] [2021-08-21 13:33:21,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:33:21,352 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:33:21,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:33:21,647 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:33:21,647 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:33:21,647 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1501427256] [2021-08-21 13:33:21,647 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1501427256] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:33:21,647 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:33:21,647 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 13:33:21,647 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [651762429] [2021-08-21 13:33:21,648 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 13:33:21,648 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:33:21,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 13:33:21,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-08-21 13:33:21,648 INFO L87 Difference]: Start difference. First operand 4427 states and 14931 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:33:24,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:33:24,443 INFO L93 Difference]: Finished difference Result 5812 states and 19359 transitions. [2021-08-21 13:33:24,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2021-08-21 13:33:24,443 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:33:24,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:33:24,454 INFO L225 Difference]: With dead ends: 5812 [2021-08-21 13:33:24,454 INFO L226 Difference]: Without dead ends: 5720 [2021-08-21 13:33:24,455 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2330 ImplicationChecksByTransitivity, 1934.1ms TimeCoverageRelationStatistics Valid=605, Invalid=6877, Unknown=0, NotChecked=0, Total=7482 [2021-08-21 13:33:24,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5720 states. [2021-08-21 13:33:24,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5720 to 4432. [2021-08-21 13:33:24,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4432 states, 4431 states have (on average 3.372827804107425) internal successors, (14945), 4431 states have internal predecessors, (14945), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:33:24,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4432 states to 4432 states and 14945 transitions. [2021-08-21 13:33:24,519 INFO L78 Accepts]: Start accepts. Automaton has 4432 states and 14945 transitions. Word has length 39 [2021-08-21 13:33:24,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:33:24,519 INFO L470 AbstractCegarLoop]: Abstraction has 4432 states and 14945 transitions. [2021-08-21 13:33:24,519 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:33:24,519 INFO L276 IsEmpty]: Start isEmpty. Operand 4432 states and 14945 transitions. [2021-08-21 13:33:24,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:33:24,525 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:33:24,525 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:33:24,525 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable260 [2021-08-21 13:33:24,525 INFO L402 AbstractCegarLoop]: === Iteration 262 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:33:24,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:33:24,525 INFO L82 PathProgramCache]: Analyzing trace with hash 138908292, now seen corresponding path program 262 times [2021-08-21 13:33:24,525 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:33:24,525 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1709814813] [2021-08-21 13:33:24,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:33:24,525 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:33:24,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:33:24,822 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:33:24,822 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:33:24,822 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1709814813] [2021-08-21 13:33:24,822 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1709814813] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:33:24,822 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:33:24,822 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 13:33:24,822 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516620818] [2021-08-21 13:33:24,822 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 13:33:24,822 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:33:24,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 13:33:24,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-08-21 13:33:24,823 INFO L87 Difference]: Start difference. First operand 4432 states and 14945 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:33:27,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:33:27,456 INFO L93 Difference]: Finished difference Result 5751 states and 19210 transitions. [2021-08-21 13:33:27,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2021-08-21 13:33:27,456 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:33:27,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:33:27,467 INFO L225 Difference]: With dead ends: 5751 [2021-08-21 13:33:27,467 INFO L226 Difference]: Without dead ends: 5699 [2021-08-21 13:33:27,468 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2066 ImplicationChecksByTransitivity, 1754.4ms TimeCoverageRelationStatistics Valid=564, Invalid=6242, Unknown=0, NotChecked=0, Total=6806 [2021-08-21 13:33:27,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5699 states. [2021-08-21 13:33:27,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5699 to 4426. [2021-08-21 13:33:27,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4426 states, 4425 states have (on average 3.3737853107344633) internal successors, (14929), 4425 states have internal predecessors, (14929), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:33:27,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4426 states to 4426 states and 14929 transitions. [2021-08-21 13:33:27,533 INFO L78 Accepts]: Start accepts. Automaton has 4426 states and 14929 transitions. Word has length 39 [2021-08-21 13:33:27,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:33:27,533 INFO L470 AbstractCegarLoop]: Abstraction has 4426 states and 14929 transitions. [2021-08-21 13:33:27,533 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:33:27,533 INFO L276 IsEmpty]: Start isEmpty. Operand 4426 states and 14929 transitions. [2021-08-21 13:33:27,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:33:27,539 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:33:27,539 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:33:27,539 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable261 [2021-08-21 13:33:27,539 INFO L402 AbstractCegarLoop]: === Iteration 263 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:33:27,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:33:27,539 INFO L82 PathProgramCache]: Analyzing trace with hash 382087364, now seen corresponding path program 263 times [2021-08-21 13:33:27,539 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:33:27,539 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2074250482] [2021-08-21 13:33:27,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:33:27,539 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:33:27,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:33:27,833 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:33:27,833 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:33:27,833 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2074250482] [2021-08-21 13:33:27,833 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2074250482] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:33:27,833 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:33:27,833 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 13:33:27,833 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238016593] [2021-08-21 13:33:27,833 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 13:33:27,833 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:33:27,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 13:33:27,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-08-21 13:33:27,834 INFO L87 Difference]: Start difference. First operand 4426 states and 14929 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:33:29,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:33:29,867 INFO L93 Difference]: Finished difference Result 5765 states and 19209 transitions. [2021-08-21 13:33:29,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2021-08-21 13:33:29,867 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:33:29,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:33:29,878 INFO L225 Difference]: With dead ends: 5765 [2021-08-21 13:33:29,879 INFO L226 Difference]: Without dead ends: 5702 [2021-08-21 13:33:29,879 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1331 ImplicationChecksByTransitivity, 1343.2ms TimeCoverageRelationStatistics Valid=431, Invalid=4399, Unknown=0, NotChecked=0, Total=4830 [2021-08-21 13:33:29,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5702 states. [2021-08-21 13:33:29,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5702 to 4429. [2021-08-21 13:33:29,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4429 states, 4428 states have (on average 3.372628726287263) internal successors, (14934), 4428 states have internal predecessors, (14934), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:33:29,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4429 states to 4429 states and 14934 transitions. [2021-08-21 13:33:29,945 INFO L78 Accepts]: Start accepts. Automaton has 4429 states and 14934 transitions. Word has length 39 [2021-08-21 13:33:29,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:33:29,945 INFO L470 AbstractCegarLoop]: Abstraction has 4429 states and 14934 transitions. [2021-08-21 13:33:29,945 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:33:29,945 INFO L276 IsEmpty]: Start isEmpty. Operand 4429 states and 14934 transitions. [2021-08-21 13:33:29,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:33:29,951 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:33:29,951 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:33:29,951 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable262 [2021-08-21 13:33:29,951 INFO L402 AbstractCegarLoop]: === Iteration 264 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:33:29,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:33:29,951 INFO L82 PathProgramCache]: Analyzing trace with hash -1545554394, now seen corresponding path program 264 times [2021-08-21 13:33:29,951 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:33:29,951 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [151326088] [2021-08-21 13:33:29,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:33:29,951 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:33:29,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:33:30,248 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:33:30,248 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:33:30,248 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [151326088] [2021-08-21 13:33:30,248 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [151326088] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:33:30,248 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:33:30,249 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 13:33:30,249 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752860964] [2021-08-21 13:33:30,249 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 13:33:30,249 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:33:30,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 13:33:30,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-08-21 13:33:30,249 INFO L87 Difference]: Start difference. First operand 4429 states and 14934 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:33:32,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:33:32,155 INFO L93 Difference]: Finished difference Result 5656 states and 18956 transitions. [2021-08-21 13:33:32,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2021-08-21 13:33:32,155 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:33:32,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:33:32,166 INFO L225 Difference]: With dead ends: 5656 [2021-08-21 13:33:32,167 INFO L226 Difference]: Without dead ends: 5610 [2021-08-21 13:33:32,167 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1180 ImplicationChecksByTransitivity, 1226.4ms TimeCoverageRelationStatistics Valid=401, Invalid=4021, Unknown=0, NotChecked=0, Total=4422 [2021-08-21 13:33:32,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5610 states. [2021-08-21 13:33:32,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5610 to 4436. [2021-08-21 13:33:32,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4436 states, 4435 states have (on average 3.370687711386697) internal successors, (14949), 4435 states have internal predecessors, (14949), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:33:32,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4436 states to 4436 states and 14949 transitions. [2021-08-21 13:33:32,235 INFO L78 Accepts]: Start accepts. Automaton has 4436 states and 14949 transitions. Word has length 39 [2021-08-21 13:33:32,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:33:32,235 INFO L470 AbstractCegarLoop]: Abstraction has 4436 states and 14949 transitions. [2021-08-21 13:33:32,235 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:33:32,235 INFO L276 IsEmpty]: Start isEmpty. Operand 4436 states and 14949 transitions. [2021-08-21 13:33:32,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:33:32,241 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:33:32,241 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:33:32,241 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable263 [2021-08-21 13:33:32,241 INFO L402 AbstractCegarLoop]: === Iteration 265 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:33:32,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:33:32,241 INFO L82 PathProgramCache]: Analyzing trace with hash 1314345412, now seen corresponding path program 265 times [2021-08-21 13:33:32,241 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:33:32,241 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [114911730] [2021-08-21 13:33:32,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:33:32,241 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:33:32,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:33:32,575 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:33:32,575 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:33:32,575 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [114911730] [2021-08-21 13:33:32,575 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [114911730] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:33:32,575 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:33:32,575 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 13:33:32,576 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845394101] [2021-08-21 13:33:32,576 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 13:33:32,576 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:33:32,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 13:33:32,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-08-21 13:33:32,576 INFO L87 Difference]: Start difference. First operand 4436 states and 14949 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:33:34,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:33:34,571 INFO L93 Difference]: Finished difference Result 5586 states and 18745 transitions. [2021-08-21 13:33:34,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2021-08-21 13:33:34,571 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:33:34,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:33:34,583 INFO L225 Difference]: With dead ends: 5586 [2021-08-21 13:33:34,583 INFO L226 Difference]: Without dead ends: 5525 [2021-08-21 13:33:34,584 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1126 ImplicationChecksByTransitivity, 1301.1ms TimeCoverageRelationStatistics Valid=384, Invalid=3906, Unknown=0, NotChecked=0, Total=4290 [2021-08-21 13:33:34,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5525 states. [2021-08-21 13:33:34,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5525 to 4420. [2021-08-21 13:33:34,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4420 states, 4419 states have (on average 3.375650599683186) internal successors, (14917), 4419 states have internal predecessors, (14917), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:33:34,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4420 states to 4420 states and 14917 transitions. [2021-08-21 13:33:34,652 INFO L78 Accepts]: Start accepts. Automaton has 4420 states and 14917 transitions. Word has length 39 [2021-08-21 13:33:34,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:33:34,652 INFO L470 AbstractCegarLoop]: Abstraction has 4420 states and 14917 transitions. [2021-08-21 13:33:34,653 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:33:34,653 INFO L276 IsEmpty]: Start isEmpty. Operand 4420 states and 14917 transitions. [2021-08-21 13:33:34,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:33:34,658 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:33:34,658 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:33:34,658 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable264 [2021-08-21 13:33:34,658 INFO L402 AbstractCegarLoop]: === Iteration 266 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:33:34,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:33:34,659 INFO L82 PathProgramCache]: Analyzing trace with hash -972824730, now seen corresponding path program 266 times [2021-08-21 13:33:34,659 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:33:34,659 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2030374947] [2021-08-21 13:33:34,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:33:34,659 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:33:34,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:33:34,957 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:33:34,957 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:33:34,957 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2030374947] [2021-08-21 13:33:34,958 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2030374947] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:33:34,958 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:33:34,958 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 13:33:34,958 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412894431] [2021-08-21 13:33:34,958 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 13:33:34,958 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:33:34,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 13:33:34,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-08-21 13:33:34,958 INFO L87 Difference]: Start difference. First operand 4420 states and 14917 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:33:36,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:33:36,828 INFO L93 Difference]: Finished difference Result 5615 states and 19016 transitions. [2021-08-21 13:33:36,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2021-08-21 13:33:36,828 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:33:36,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:33:36,840 INFO L225 Difference]: With dead ends: 5615 [2021-08-21 13:33:36,840 INFO L226 Difference]: Without dead ends: 5552 [2021-08-21 13:33:36,841 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1042 ImplicationChecksByTransitivity, 1107.7ms TimeCoverageRelationStatistics Valid=374, Invalid=3658, Unknown=0, NotChecked=0, Total=4032 [2021-08-21 13:33:36,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5552 states. [2021-08-21 13:33:36,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5552 to 4412. [2021-08-21 13:33:36,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4412 states, 4411 states have (on average 3.3772387213783723) internal successors, (14897), 4411 states have internal predecessors, (14897), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:33:36,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4412 states to 4412 states and 14897 transitions. [2021-08-21 13:33:36,916 INFO L78 Accepts]: Start accepts. Automaton has 4412 states and 14897 transitions. Word has length 39 [2021-08-21 13:33:36,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:33:36,916 INFO L470 AbstractCegarLoop]: Abstraction has 4412 states and 14897 transitions. [2021-08-21 13:33:36,916 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:33:36,916 INFO L276 IsEmpty]: Start isEmpty. Operand 4412 states and 14897 transitions. [2021-08-21 13:33:36,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:33:36,923 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:33:36,923 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:33:36,923 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable265 [2021-08-21 13:33:36,923 INFO L402 AbstractCegarLoop]: === Iteration 267 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:33:36,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:33:36,924 INFO L82 PathProgramCache]: Analyzing trace with hash -1218316828, now seen corresponding path program 267 times [2021-08-21 13:33:36,924 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:33:36,924 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [839009042] [2021-08-21 13:33:36,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:33:36,924 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:33:36,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:33:37,178 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:33:37,178 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:33:37,178 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [839009042] [2021-08-21 13:33:37,178 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [839009042] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:33:37,178 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:33:37,178 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 13:33:37,178 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138414962] [2021-08-21 13:33:37,179 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 13:33:37,179 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:33:37,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 13:33:37,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-08-21 13:33:37,179 INFO L87 Difference]: Start difference. First operand 4412 states and 14897 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:33:38,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:33:38,872 INFO L93 Difference]: Finished difference Result 5686 states and 19189 transitions. [2021-08-21 13:33:38,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2021-08-21 13:33:38,872 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:33:38,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:33:38,884 INFO L225 Difference]: With dead ends: 5686 [2021-08-21 13:33:38,884 INFO L226 Difference]: Without dead ends: 5611 [2021-08-21 13:33:38,885 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1042 ImplicationChecksByTransitivity, 1043.2ms TimeCoverageRelationStatistics Valid=374, Invalid=3658, Unknown=0, NotChecked=0, Total=4032 [2021-08-21 13:33:38,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5611 states. [2021-08-21 13:33:38,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5611 to 4400. [2021-08-21 13:33:38,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4400 states, 4399 states have (on average 3.3796317344851103) internal successors, (14867), 4399 states have internal predecessors, (14867), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:33:38,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4400 states to 4400 states and 14867 transitions. [2021-08-21 13:33:38,957 INFO L78 Accepts]: Start accepts. Automaton has 4400 states and 14867 transitions. Word has length 39 [2021-08-21 13:33:38,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:33:38,957 INFO L470 AbstractCegarLoop]: Abstraction has 4400 states and 14867 transitions. [2021-08-21 13:33:38,957 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:33:38,957 INFO L276 IsEmpty]: Start isEmpty. Operand 4400 states and 14867 transitions. [2021-08-21 13:33:38,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:33:38,963 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:33:38,963 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:33:38,963 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable266 [2021-08-21 13:33:38,963 INFO L402 AbstractCegarLoop]: === Iteration 268 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:33:38,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:33:38,963 INFO L82 PathProgramCache]: Analyzing trace with hash 1892945830, now seen corresponding path program 268 times [2021-08-21 13:33:38,963 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:33:38,963 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [614639394] [2021-08-21 13:33:38,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:33:38,964 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:33:38,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:33:39,215 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:33:39,215 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:33:39,216 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [614639394] [2021-08-21 13:33:39,216 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [614639394] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:33:39,216 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:33:39,216 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 13:33:39,216 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10136023] [2021-08-21 13:33:39,216 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 13:33:39,216 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:33:39,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 13:33:39,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-08-21 13:33:39,216 INFO L87 Difference]: Start difference. First operand 4400 states and 14867 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:33:41,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:33:41,317 INFO L93 Difference]: Finished difference Result 6230 states and 20933 transitions. [2021-08-21 13:33:41,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2021-08-21 13:33:41,317 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:33:41,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:33:41,330 INFO L225 Difference]: With dead ends: 6230 [2021-08-21 13:33:41,330 INFO L226 Difference]: Without dead ends: 6175 [2021-08-21 13:33:41,330 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1179 ImplicationChecksByTransitivity, 1152.4ms TimeCoverageRelationStatistics Valid=396, Invalid=4026, Unknown=0, NotChecked=0, Total=4422 [2021-08-21 13:33:41,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6175 states. [2021-08-21 13:33:41,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6175 to 4406. [2021-08-21 13:33:41,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4406 states, 4405 states have (on average 3.3779795686719636) internal successors, (14880), 4405 states have internal predecessors, (14880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:33:41,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4406 states to 4406 states and 14880 transitions. [2021-08-21 13:33:41,402 INFO L78 Accepts]: Start accepts. Automaton has 4406 states and 14880 transitions. Word has length 39 [2021-08-21 13:33:41,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:33:41,402 INFO L470 AbstractCegarLoop]: Abstraction has 4406 states and 14880 transitions. [2021-08-21 13:33:41,402 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:33:41,402 INFO L276 IsEmpty]: Start isEmpty. Operand 4406 states and 14880 transitions. [2021-08-21 13:33:41,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:33:41,408 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:33:41,408 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:33:41,408 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable267 [2021-08-21 13:33:41,408 INFO L402 AbstractCegarLoop]: === Iteration 269 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:33:41,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:33:41,408 INFO L82 PathProgramCache]: Analyzing trace with hash -1064963452, now seen corresponding path program 269 times [2021-08-21 13:33:41,409 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:33:41,409 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1893765276] [2021-08-21 13:33:41,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:33:41,409 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:33:41,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:33:41,698 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:33:41,699 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:33:41,699 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1893765276] [2021-08-21 13:33:41,699 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1893765276] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:33:41,699 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:33:41,699 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 13:33:41,699 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455833352] [2021-08-21 13:33:41,699 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 13:33:41,699 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:33:41,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 13:33:41,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-08-21 13:33:41,699 INFO L87 Difference]: Start difference. First operand 4406 states and 14880 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:33:43,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:33:43,857 INFO L93 Difference]: Finished difference Result 6218 states and 20895 transitions. [2021-08-21 13:33:43,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2021-08-21 13:33:43,857 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:33:43,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:33:43,869 INFO L225 Difference]: With dead ends: 6218 [2021-08-21 13:33:43,869 INFO L226 Difference]: Without dead ends: 6145 [2021-08-21 13:33:43,869 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1179 ImplicationChecksByTransitivity, 1257.3ms TimeCoverageRelationStatistics Valid=396, Invalid=4026, Unknown=0, NotChecked=0, Total=4422 [2021-08-21 13:33:43,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6145 states. [2021-08-21 13:33:43,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6145 to 4396. [2021-08-21 13:33:43,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4396 states, 4395 states have (on average 3.380887372013652) internal successors, (14859), 4395 states have internal predecessors, (14859), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:33:43,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4396 states to 4396 states and 14859 transitions. [2021-08-21 13:33:43,935 INFO L78 Accepts]: Start accepts. Automaton has 4396 states and 14859 transitions. Word has length 39 [2021-08-21 13:33:43,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:33:43,935 INFO L470 AbstractCegarLoop]: Abstraction has 4396 states and 14859 transitions. [2021-08-21 13:33:43,935 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:33:43,935 INFO L276 IsEmpty]: Start isEmpty. Operand 4396 states and 14859 transitions. [2021-08-21 13:33:43,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:33:43,941 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:33:43,941 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:33:43,941 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable268 [2021-08-21 13:33:43,941 INFO L402 AbstractCegarLoop]: === Iteration 270 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:33:43,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:33:43,941 INFO L82 PathProgramCache]: Analyzing trace with hash -1434538216, now seen corresponding path program 270 times [2021-08-21 13:33:43,941 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:33:43,941 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [88011035] [2021-08-21 13:33:43,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:33:43,941 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:33:43,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:33:44,230 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:33:44,231 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:33:44,231 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [88011035] [2021-08-21 13:33:44,231 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [88011035] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:33:44,231 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:33:44,231 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 13:33:44,231 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474951998] [2021-08-21 13:33:44,231 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 13:33:44,231 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:33:44,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 13:33:44,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-08-21 13:33:44,231 INFO L87 Difference]: Start difference. First operand 4396 states and 14859 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:33:47,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:33:47,735 INFO L93 Difference]: Finished difference Result 8826 states and 29328 transitions. [2021-08-21 13:33:47,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2021-08-21 13:33:47,736 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:33:47,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:33:47,753 INFO L225 Difference]: With dead ends: 8826 [2021-08-21 13:33:47,753 INFO L226 Difference]: Without dead ends: 8626 [2021-08-21 13:33:47,755 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3514 ImplicationChecksByTransitivity, 2161.5ms TimeCoverageRelationStatistics Valid=797, Invalid=9709, Unknown=0, NotChecked=0, Total=10506 [2021-08-21 13:33:47,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8626 states. [2021-08-21 13:33:47,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8626 to 5000. [2021-08-21 13:33:47,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5000 states, 4999 states have (on average 3.396879375875175) internal successors, (16981), 4999 states have internal predecessors, (16981), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:33:47,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5000 states to 5000 states and 16981 transitions. [2021-08-21 13:33:47,845 INFO L78 Accepts]: Start accepts. Automaton has 5000 states and 16981 transitions. Word has length 39 [2021-08-21 13:33:47,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:33:47,845 INFO L470 AbstractCegarLoop]: Abstraction has 5000 states and 16981 transitions. [2021-08-21 13:33:47,845 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:33:47,845 INFO L276 IsEmpty]: Start isEmpty. Operand 5000 states and 16981 transitions. [2021-08-21 13:33:47,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:33:47,853 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:33:47,853 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:33:47,853 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable269 [2021-08-21 13:33:47,853 INFO L402 AbstractCegarLoop]: === Iteration 271 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:33:47,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:33:47,853 INFO L82 PathProgramCache]: Analyzing trace with hash -261885994, now seen corresponding path program 271 times [2021-08-21 13:33:47,853 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:33:47,853 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2006533195] [2021-08-21 13:33:47,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:33:47,854 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:33:47,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:33:48,143 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:33:48,144 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:33:48,144 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2006533195] [2021-08-21 13:33:48,144 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2006533195] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:33:48,144 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:33:48,144 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 13:33:48,144 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348011739] [2021-08-21 13:33:48,144 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 13:33:48,144 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:33:48,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 13:33:48,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-08-21 13:33:48,144 INFO L87 Difference]: Start difference. First operand 5000 states and 16981 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:33:51,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:33:51,523 INFO L93 Difference]: Finished difference Result 8993 states and 29811 transitions. [2021-08-21 13:33:51,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2021-08-21 13:33:51,523 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:33:51,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:33:51,541 INFO L225 Difference]: With dead ends: 8993 [2021-08-21 13:33:51,541 INFO L226 Difference]: Without dead ends: 8756 [2021-08-21 13:33:51,543 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3112 ImplicationChecksByTransitivity, 2113.3ms TimeCoverageRelationStatistics Valid=751, Invalid=8755, Unknown=0, NotChecked=0, Total=9506 [2021-08-21 13:33:51,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8756 states. [2021-08-21 13:33:51,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8756 to 4980. [2021-08-21 13:33:51,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4980 states, 4979 states have (on average 3.4004820245029124) internal successors, (16931), 4979 states have internal predecessors, (16931), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:33:51,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4980 states to 4980 states and 16931 transitions. [2021-08-21 13:33:51,635 INFO L78 Accepts]: Start accepts. Automaton has 4980 states and 16931 transitions. Word has length 39 [2021-08-21 13:33:51,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:33:51,635 INFO L470 AbstractCegarLoop]: Abstraction has 4980 states and 16931 transitions. [2021-08-21 13:33:51,635 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:33:51,635 INFO L276 IsEmpty]: Start isEmpty. Operand 4980 states and 16931 transitions. [2021-08-21 13:33:51,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:33:51,641 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:33:51,641 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:33:51,641 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable270 [2021-08-21 13:33:51,641 INFO L402 AbstractCegarLoop]: === Iteration 272 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:33:51,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:33:51,642 INFO L82 PathProgramCache]: Analyzing trace with hash -329630874, now seen corresponding path program 272 times [2021-08-21 13:33:51,642 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:33:51,642 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [288992745] [2021-08-21 13:33:51,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:33:51,642 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:33:51,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:33:51,985 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:33:51,986 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:33:51,986 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [288992745] [2021-08-21 13:33:51,986 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [288992745] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:33:51,986 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:33:51,986 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 13:33:51,986 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1878810396] [2021-08-21 13:33:51,986 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 13:33:51,986 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:33:51,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 13:33:51,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-08-21 13:33:51,986 INFO L87 Difference]: Start difference. First operand 4980 states and 16931 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:33:55,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:33:55,259 INFO L93 Difference]: Finished difference Result 8741 states and 29144 transitions. [2021-08-21 13:33:55,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2021-08-21 13:33:55,259 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:33:55,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:33:55,276 INFO L225 Difference]: With dead ends: 8741 [2021-08-21 13:33:55,276 INFO L226 Difference]: Without dead ends: 8609 [2021-08-21 13:33:55,277 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3353 ImplicationChecksByTransitivity, 2029.4ms TimeCoverageRelationStatistics Valid=761, Invalid=9339, Unknown=0, NotChecked=0, Total=10100 [2021-08-21 13:33:55,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8609 states. [2021-08-21 13:33:55,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8609 to 5021. [2021-08-21 13:33:55,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5021 states, 5020 states have (on average 3.393426294820717) internal successors, (17035), 5020 states have internal predecessors, (17035), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:33:55,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5021 states to 5021 states and 17035 transitions. [2021-08-21 13:33:55,368 INFO L78 Accepts]: Start accepts. Automaton has 5021 states and 17035 transitions. Word has length 39 [2021-08-21 13:33:55,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:33:55,368 INFO L470 AbstractCegarLoop]: Abstraction has 5021 states and 17035 transitions. [2021-08-21 13:33:55,368 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:33:55,368 INFO L276 IsEmpty]: Start isEmpty. Operand 5021 states and 17035 transitions. [2021-08-21 13:33:55,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:33:55,375 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:33:55,375 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:33:55,375 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable271 [2021-08-21 13:33:55,375 INFO L402 AbstractCegarLoop]: === Iteration 273 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:33:55,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:33:55,375 INFO L82 PathProgramCache]: Analyzing trace with hash 2037694664, now seen corresponding path program 273 times [2021-08-21 13:33:55,375 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:33:55,375 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1094422613] [2021-08-21 13:33:55,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:33:55,375 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:33:55,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:33:55,666 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:33:55,666 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:33:55,666 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1094422613] [2021-08-21 13:33:55,666 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1094422613] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:33:55,666 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:33:55,666 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 13:33:55,666 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668691233] [2021-08-21 13:33:55,667 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 13:33:55,667 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:33:55,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 13:33:55,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-08-21 13:33:55,667 INFO L87 Difference]: Start difference. First operand 5021 states and 17035 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:33:58,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:33:58,950 INFO L93 Difference]: Finished difference Result 8871 states and 29524 transitions. [2021-08-21 13:33:58,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2021-08-21 13:33:58,950 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:33:58,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:33:58,968 INFO L225 Difference]: With dead ends: 8871 [2021-08-21 13:33:58,968 INFO L226 Difference]: Without dead ends: 8706 [2021-08-21 13:33:58,969 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2960 ImplicationChecksByTransitivity, 2000.5ms TimeCoverageRelationStatistics Valid=715, Invalid=8405, Unknown=0, NotChecked=0, Total=9120 [2021-08-21 13:33:58,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8706 states. [2021-08-21 13:33:59,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8706 to 5003. [2021-08-21 13:33:59,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5003 states, 5002 states have (on average 3.3976409436225508) internal successors, (16995), 5002 states have internal predecessors, (16995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:33:59,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5003 states to 5003 states and 16995 transitions. [2021-08-21 13:33:59,064 INFO L78 Accepts]: Start accepts. Automaton has 5003 states and 16995 transitions. Word has length 39 [2021-08-21 13:33:59,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:33:59,064 INFO L470 AbstractCegarLoop]: Abstraction has 5003 states and 16995 transitions. [2021-08-21 13:33:59,064 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:33:59,064 INFO L276 IsEmpty]: Start isEmpty. Operand 5003 states and 16995 transitions. [2021-08-21 13:33:59,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:33:59,071 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:33:59,071 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:33:59,071 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable272 [2021-08-21 13:33:59,071 INFO L402 AbstractCegarLoop]: === Iteration 274 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:33:59,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:33:59,071 INFO L82 PathProgramCache]: Analyzing trace with hash -190458718, now seen corresponding path program 274 times [2021-08-21 13:33:59,071 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:33:59,071 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [472706440] [2021-08-21 13:33:59,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:33:59,071 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:33:59,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:33:59,360 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:33:59,360 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:33:59,360 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [472706440] [2021-08-21 13:33:59,360 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [472706440] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:33:59,360 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:33:59,360 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 13:33:59,360 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610318541] [2021-08-21 13:33:59,380 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 13:33:59,380 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:33:59,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 13:33:59,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-08-21 13:33:59,381 INFO L87 Difference]: Start difference. First operand 5003 states and 16995 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:34:02,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:34:02,233 INFO L93 Difference]: Finished difference Result 6507 states and 21685 transitions. [2021-08-21 13:34:02,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2021-08-21 13:34:02,233 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:34:02,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:34:02,246 INFO L225 Difference]: With dead ends: 6507 [2021-08-21 13:34:02,247 INFO L226 Difference]: Without dead ends: 6373 [2021-08-21 13:34:02,247 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2186 ImplicationChecksByTransitivity, 1907.1ms TimeCoverageRelationStatistics Valid=579, Invalid=6561, Unknown=0, NotChecked=0, Total=7140 [2021-08-21 13:34:02,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6373 states. [2021-08-21 13:34:02,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6373 to 5016. [2021-08-21 13:34:02,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5016 states, 5015 states have (on average 3.39740777666999) internal successors, (17038), 5015 states have internal predecessors, (17038), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:34:02,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5016 states to 5016 states and 17038 transitions. [2021-08-21 13:34:02,326 INFO L78 Accepts]: Start accepts. Automaton has 5016 states and 17038 transitions. Word has length 39 [2021-08-21 13:34:02,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:34:02,326 INFO L470 AbstractCegarLoop]: Abstraction has 5016 states and 17038 transitions. [2021-08-21 13:34:02,326 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:34:02,327 INFO L276 IsEmpty]: Start isEmpty. Operand 5016 states and 17038 transitions. [2021-08-21 13:34:02,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:34:02,333 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:34:02,333 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:34:02,333 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable273 [2021-08-21 13:34:02,333 INFO L402 AbstractCegarLoop]: === Iteration 275 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:34:02,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:34:02,334 INFO L82 PathProgramCache]: Analyzing trace with hash 728024852, now seen corresponding path program 275 times [2021-08-21 13:34:02,334 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:34:02,334 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1331192573] [2021-08-21 13:34:02,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:34:02,334 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:34:02,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:34:02,622 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:34:02,622 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:34:02,622 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1331192573] [2021-08-21 13:34:02,622 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1331192573] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:34:02,622 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:34:02,622 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 13:34:02,622 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993614301] [2021-08-21 13:34:02,622 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 13:34:02,622 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:34:02,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 13:34:02,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-08-21 13:34:02,623 INFO L87 Difference]: Start difference. First operand 5016 states and 17038 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:34:04,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:34:04,436 INFO L93 Difference]: Finished difference Result 6279 states and 21136 transitions. [2021-08-21 13:34:04,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2021-08-21 13:34:04,436 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:34:04,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:34:04,448 INFO L225 Difference]: With dead ends: 6279 [2021-08-21 13:34:04,448 INFO L226 Difference]: Without dead ends: 6236 [2021-08-21 13:34:04,449 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1083 ImplicationChecksByTransitivity, 1133.3ms TimeCoverageRelationStatistics Valid=370, Invalid=3790, Unknown=0, NotChecked=0, Total=4160 [2021-08-21 13:34:04,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6236 states. [2021-08-21 13:34:04,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6236 to 5022. [2021-08-21 13:34:04,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5022 states, 5021 states have (on average 3.395937064329815) internal successors, (17051), 5021 states have internal predecessors, (17051), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:34:04,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5022 states to 5022 states and 17051 transitions. [2021-08-21 13:34:04,527 INFO L78 Accepts]: Start accepts. Automaton has 5022 states and 17051 transitions. Word has length 39 [2021-08-21 13:34:04,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:34:04,527 INFO L470 AbstractCegarLoop]: Abstraction has 5022 states and 17051 transitions. [2021-08-21 13:34:04,527 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:34:04,527 INFO L276 IsEmpty]: Start isEmpty. Operand 5022 states and 17051 transitions. [2021-08-21 13:34:04,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:34:04,534 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:34:04,534 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:34:04,534 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable274 [2021-08-21 13:34:04,534 INFO L402 AbstractCegarLoop]: === Iteration 276 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:34:04,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:34:04,534 INFO L82 PathProgramCache]: Analyzing trace with hash 748173586, now seen corresponding path program 276 times [2021-08-21 13:34:04,534 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:34:04,534 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [914188562] [2021-08-21 13:34:04,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:34:04,535 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:34:04,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:34:04,826 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:34:04,827 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:34:04,827 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [914188562] [2021-08-21 13:34:04,827 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [914188562] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:34:04,827 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:34:04,827 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 13:34:04,827 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [292633737] [2021-08-21 13:34:04,827 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 13:34:04,827 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:34:04,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 13:34:04,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-08-21 13:34:04,827 INFO L87 Difference]: Start difference. First operand 5022 states and 17051 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:34:06,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:34:06,830 INFO L93 Difference]: Finished difference Result 6239 states and 21053 transitions. [2021-08-21 13:34:06,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2021-08-21 13:34:06,830 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:34:06,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:34:06,843 INFO L225 Difference]: With dead ends: 6239 [2021-08-21 13:34:06,843 INFO L226 Difference]: Without dead ends: 6196 [2021-08-21 13:34:06,844 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1132 ImplicationChecksByTransitivity, 1302.7ms TimeCoverageRelationStatistics Valid=382, Invalid=3908, Unknown=0, NotChecked=0, Total=4290 [2021-08-21 13:34:06,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6196 states. [2021-08-21 13:34:06,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6196 to 5018. [2021-08-21 13:34:06,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5018 states, 5017 states have (on average 3.396651385290014) internal successors, (17041), 5017 states have internal predecessors, (17041), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:34:06,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5018 states to 5018 states and 17041 transitions. [2021-08-21 13:34:06,921 INFO L78 Accepts]: Start accepts. Automaton has 5018 states and 17041 transitions. Word has length 39 [2021-08-21 13:34:06,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:34:06,921 INFO L470 AbstractCegarLoop]: Abstraction has 5018 states and 17041 transitions. [2021-08-21 13:34:06,921 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:34:06,921 INFO L276 IsEmpty]: Start isEmpty. Operand 5018 states and 17041 transitions. [2021-08-21 13:34:06,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:34:06,928 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:34:06,928 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:34:06,928 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable275 [2021-08-21 13:34:06,929 INFO L402 AbstractCegarLoop]: === Iteration 277 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:34:06,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:34:06,929 INFO L82 PathProgramCache]: Analyzing trace with hash 1900677074, now seen corresponding path program 277 times [2021-08-21 13:34:06,929 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:34:06,929 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [521010462] [2021-08-21 13:34:06,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:34:06,929 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:34:06,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:34:07,223 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:34:07,223 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:34:07,223 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [521010462] [2021-08-21 13:34:07,224 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [521010462] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:34:07,224 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:34:07,224 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 13:34:07,224 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1952682190] [2021-08-21 13:34:07,224 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 13:34:07,224 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:34:07,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 13:34:07,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-08-21 13:34:07,224 INFO L87 Difference]: Start difference. First operand 5018 states and 17041 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:34:09,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:34:09,271 INFO L93 Difference]: Finished difference Result 6310 states and 21213 transitions. [2021-08-21 13:34:09,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2021-08-21 13:34:09,271 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:34:09,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:34:09,283 INFO L225 Difference]: With dead ends: 6310 [2021-08-21 13:34:09,283 INFO L226 Difference]: Without dead ends: 6250 [2021-08-21 13:34:09,284 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1223 ImplicationChecksByTransitivity, 1289.0ms TimeCoverageRelationStatistics Valid=401, Invalid=4155, Unknown=0, NotChecked=0, Total=4556 [2021-08-21 13:34:09,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6250 states. [2021-08-21 13:34:09,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6250 to 5018. [2021-08-21 13:34:09,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5018 states, 5017 states have (on average 3.396651385290014) internal successors, (17041), 5017 states have internal predecessors, (17041), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:34:09,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5018 states to 5018 states and 17041 transitions. [2021-08-21 13:34:09,359 INFO L78 Accepts]: Start accepts. Automaton has 5018 states and 17041 transitions. Word has length 39 [2021-08-21 13:34:09,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:34:09,359 INFO L470 AbstractCegarLoop]: Abstraction has 5018 states and 17041 transitions. [2021-08-21 13:34:09,359 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:34:09,359 INFO L276 IsEmpty]: Start isEmpty. Operand 5018 states and 17041 transitions. [2021-08-21 13:34:09,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:34:09,366 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:34:09,366 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:34:09,366 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable276 [2021-08-21 13:34:09,366 INFO L402 AbstractCegarLoop]: === Iteration 278 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:34:09,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:34:09,366 INFO L82 PathProgramCache]: Analyzing trace with hash -178889468, now seen corresponding path program 278 times [2021-08-21 13:34:09,366 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:34:09,367 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1151049919] [2021-08-21 13:34:09,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:34:09,367 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:34:09,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:34:09,647 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:34:09,647 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:34:09,647 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1151049919] [2021-08-21 13:34:09,647 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1151049919] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:34:09,647 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:34:09,647 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-08-21 13:34:09,648 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1973067672] [2021-08-21 13:34:09,648 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-08-21 13:34:09,648 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:34:09,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-08-21 13:34:09,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-08-21 13:34:09,648 INFO L87 Difference]: Start difference. First operand 5018 states and 17041 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:34:11,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:34:11,507 INFO L93 Difference]: Finished difference Result 6281 states and 21154 transitions. [2021-08-21 13:34:11,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2021-08-21 13:34:11,508 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:34:11,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:34:11,519 INFO L225 Difference]: With dead ends: 6281 [2021-08-21 13:34:11,519 INFO L226 Difference]: Without dead ends: 6205 [2021-08-21 13:34:11,519 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1038 ImplicationChecksByTransitivity, 1199.1ms TimeCoverageRelationStatistics Valid=358, Invalid=3548, Unknown=0, NotChecked=0, Total=3906 [2021-08-21 13:34:11,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6205 states. [2021-08-21 13:34:11,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6205 to 5026. [2021-08-21 13:34:11,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5026 states, 5025 states have (on average 3.3944278606965175) internal successors, (17057), 5025 states have internal predecessors, (17057), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:34:11,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5026 states to 5026 states and 17057 transitions. [2021-08-21 13:34:11,590 INFO L78 Accepts]: Start accepts. Automaton has 5026 states and 17057 transitions. Word has length 39 [2021-08-21 13:34:11,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:34:11,591 INFO L470 AbstractCegarLoop]: Abstraction has 5026 states and 17057 transitions. [2021-08-21 13:34:11,591 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:34:11,591 INFO L276 IsEmpty]: Start isEmpty. Operand 5026 states and 17057 transitions. [2021-08-21 13:34:11,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:34:11,597 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:34:11,597 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:34:11,597 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable277 [2021-08-21 13:34:11,597 INFO L402 AbstractCegarLoop]: === Iteration 279 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:34:11,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:34:11,598 INFO L82 PathProgramCache]: Analyzing trace with hash -1196943080, now seen corresponding path program 279 times [2021-08-21 13:34:11,598 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:34:11,598 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1482455077] [2021-08-21 13:34:11,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:34:11,598 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:34:11,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:34:11,889 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:34:11,889 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:34:11,889 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1482455077] [2021-08-21 13:34:11,889 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1482455077] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:34:11,889 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:34:11,889 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 13:34:11,889 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406580163] [2021-08-21 13:34:11,889 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 13:34:11,889 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:34:11,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 13:34:11,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-08-21 13:34:11,890 INFO L87 Difference]: Start difference. First operand 5026 states and 17057 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:34:13,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:34:13,814 INFO L93 Difference]: Finished difference Result 6263 states and 21100 transitions. [2021-08-21 13:34:13,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2021-08-21 13:34:13,815 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:34:13,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:34:13,827 INFO L225 Difference]: With dead ends: 6263 [2021-08-21 13:34:13,827 INFO L226 Difference]: Without dead ends: 6193 [2021-08-21 13:34:13,828 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1177 ImplicationChecksByTransitivity, 1241.3ms TimeCoverageRelationStatistics Valid=383, Invalid=4039, Unknown=0, NotChecked=0, Total=4422 [2021-08-21 13:34:13,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6193 states. [2021-08-21 13:34:13,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6193 to 5014. [2021-08-21 13:34:13,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5014 states, 5013 states have (on average 3.3965689208059047) internal successors, (17027), 5013 states have internal predecessors, (17027), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:34:13,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5014 states to 5014 states and 17027 transitions. [2021-08-21 13:34:13,977 INFO L78 Accepts]: Start accepts. Automaton has 5014 states and 17027 transitions. Word has length 39 [2021-08-21 13:34:13,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:34:13,977 INFO L470 AbstractCegarLoop]: Abstraction has 5014 states and 17027 transitions. [2021-08-21 13:34:13,977 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:34:13,977 INFO L276 IsEmpty]: Start isEmpty. Operand 5014 states and 17027 transitions. [2021-08-21 13:34:13,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:34:13,983 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:34:13,983 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:34:13,983 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable278 [2021-08-21 13:34:13,983 INFO L402 AbstractCegarLoop]: === Iteration 280 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:34:13,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:34:13,984 INFO L82 PathProgramCache]: Analyzing trace with hash -720555210, now seen corresponding path program 280 times [2021-08-21 13:34:13,984 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:34:13,984 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1170126609] [2021-08-21 13:34:13,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:34:13,984 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:34:13,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:34:14,277 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:34:14,277 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:34:14,277 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1170126609] [2021-08-21 13:34:14,277 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1170126609] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:34:14,277 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:34:14,277 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 13:34:14,277 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392065877] [2021-08-21 13:34:14,277 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 13:34:14,277 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:34:14,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 13:34:14,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-08-21 13:34:14,278 INFO L87 Difference]: Start difference. First operand 5014 states and 17027 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:34:17,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:34:17,025 INFO L93 Difference]: Finished difference Result 6506 states and 21713 transitions. [2021-08-21 13:34:17,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2021-08-21 13:34:17,025 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:34:17,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:34:17,037 INFO L225 Difference]: With dead ends: 6506 [2021-08-21 13:34:17,038 INFO L226 Difference]: Without dead ends: 6362 [2021-08-21 13:34:17,038 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2188 ImplicationChecksByTransitivity, 1874.3ms TimeCoverageRelationStatistics Valid=569, Invalid=6571, Unknown=0, NotChecked=0, Total=7140 [2021-08-21 13:34:17,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6362 states. [2021-08-21 13:34:17,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6362 to 5023. [2021-08-21 13:34:17,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5023 states, 5022 states have (on average 3.3944643568299484) internal successors, (17047), 5022 states have internal predecessors, (17047), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:34:17,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5023 states to 5023 states and 17047 transitions. [2021-08-21 13:34:17,112 INFO L78 Accepts]: Start accepts. Automaton has 5023 states and 17047 transitions. Word has length 39 [2021-08-21 13:34:17,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:34:17,113 INFO L470 AbstractCegarLoop]: Abstraction has 5023 states and 17047 transitions. [2021-08-21 13:34:17,113 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:34:17,113 INFO L276 IsEmpty]: Start isEmpty. Operand 5023 states and 17047 transitions. [2021-08-21 13:34:17,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:34:17,119 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:34:17,119 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:34:17,119 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable279 [2021-08-21 13:34:17,119 INFO L402 AbstractCegarLoop]: === Iteration 281 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:34:17,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:34:17,119 INFO L82 PathProgramCache]: Analyzing trace with hash 2036992856, now seen corresponding path program 281 times [2021-08-21 13:34:17,120 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:34:17,120 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [4153999] [2021-08-21 13:34:17,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:34:17,120 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:34:17,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:34:17,412 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:34:17,412 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:34:17,412 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [4153999] [2021-08-21 13:34:17,413 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [4153999] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:34:17,413 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:34:17,413 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 13:34:17,413 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873224153] [2021-08-21 13:34:17,413 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 13:34:17,413 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:34:17,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 13:34:17,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-08-21 13:34:17,413 INFO L87 Difference]: Start difference. First operand 5023 states and 17047 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:34:19,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:34:19,256 INFO L93 Difference]: Finished difference Result 6320 states and 21252 transitions. [2021-08-21 13:34:19,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2021-08-21 13:34:19,256 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:34:19,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:34:19,269 INFO L225 Difference]: With dead ends: 6320 [2021-08-21 13:34:19,269 INFO L226 Difference]: Without dead ends: 6277 [2021-08-21 13:34:19,269 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1084 ImplicationChecksByTransitivity, 1141.2ms TimeCoverageRelationStatistics Valid=359, Invalid=3801, Unknown=0, NotChecked=0, Total=4160 [2021-08-21 13:34:19,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6277 states. [2021-08-21 13:34:19,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6277 to 5032. [2021-08-21 13:34:19,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5032 states, 5031 states have (on average 3.392566090240509) internal successors, (17068), 5031 states have internal predecessors, (17068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:34:19,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5032 states to 5032 states and 17068 transitions. [2021-08-21 13:34:19,348 INFO L78 Accepts]: Start accepts. Automaton has 5032 states and 17068 transitions. Word has length 39 [2021-08-21 13:34:19,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:34:19,348 INFO L470 AbstractCegarLoop]: Abstraction has 5032 states and 17068 transitions. [2021-08-21 13:34:19,348 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:34:19,348 INFO L276 IsEmpty]: Start isEmpty. Operand 5032 states and 17068 transitions. [2021-08-21 13:34:19,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:34:19,354 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:34:19,354 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:34:19,355 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable280 [2021-08-21 13:34:19,355 INFO L402 AbstractCegarLoop]: === Iteration 282 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:34:19,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:34:19,355 INFO L82 PathProgramCache]: Analyzing trace with hash -507867304, now seen corresponding path program 282 times [2021-08-21 13:34:19,355 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:34:19,355 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [694548109] [2021-08-21 13:34:19,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:34:19,355 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:34:19,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:34:19,686 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:34:19,686 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:34:19,686 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [694548109] [2021-08-21 13:34:19,686 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [694548109] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:34:19,686 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:34:19,686 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 13:34:19,687 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1538868886] [2021-08-21 13:34:19,687 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 13:34:19,687 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:34:19,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 13:34:19,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-08-21 13:34:19,687 INFO L87 Difference]: Start difference. First operand 5032 states and 17068 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:34:21,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:34:21,623 INFO L93 Difference]: Finished difference Result 6228 states and 20986 transitions. [2021-08-21 13:34:21,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2021-08-21 13:34:21,623 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:34:21,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:34:21,635 INFO L225 Difference]: With dead ends: 6228 [2021-08-21 13:34:21,635 INFO L226 Difference]: Without dead ends: 6177 [2021-08-21 13:34:21,636 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1083 ImplicationChecksByTransitivity, 1192.2ms TimeCoverageRelationStatistics Valid=355, Invalid=3805, Unknown=0, NotChecked=0, Total=4160 [2021-08-21 13:34:21,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6177 states. [2021-08-21 13:34:21,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6177 to 5026. [2021-08-21 13:34:21,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5026 states, 5025 states have (on average 3.3934328358208954) internal successors, (17052), 5025 states have internal predecessors, (17052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:34:21,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5026 states to 5026 states and 17052 transitions. [2021-08-21 13:34:21,714 INFO L78 Accepts]: Start accepts. Automaton has 5026 states and 17052 transitions. Word has length 39 [2021-08-21 13:34:21,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:34:21,714 INFO L470 AbstractCegarLoop]: Abstraction has 5026 states and 17052 transitions. [2021-08-21 13:34:21,714 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:34:21,714 INFO L276 IsEmpty]: Start isEmpty. Operand 5026 states and 17052 transitions. [2021-08-21 13:34:21,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:34:21,721 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:34:21,721 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:34:21,721 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable281 [2021-08-21 13:34:21,721 INFO L402 AbstractCegarLoop]: === Iteration 283 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:34:21,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:34:21,721 INFO L82 PathProgramCache]: Analyzing trace with hash 109351098, now seen corresponding path program 283 times [2021-08-21 13:34:21,721 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:34:21,721 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1424259246] [2021-08-21 13:34:21,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:34:21,722 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:34:21,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:34:22,019 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:34:22,019 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:34:22,020 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1424259246] [2021-08-21 13:34:22,020 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1424259246] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:34:22,020 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:34:22,020 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 13:34:22,020 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43706786] [2021-08-21 13:34:22,020 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 13:34:22,020 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:34:22,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 13:34:22,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-08-21 13:34:22,020 INFO L87 Difference]: Start difference. First operand 5026 states and 17052 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:34:23,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:34:23,901 INFO L93 Difference]: Finished difference Result 6386 states and 21401 transitions. [2021-08-21 13:34:23,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2021-08-21 13:34:23,901 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:34:23,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:34:23,914 INFO L225 Difference]: With dead ends: 6386 [2021-08-21 13:34:23,914 INFO L226 Difference]: Without dead ends: 6314 [2021-08-21 13:34:23,915 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1228 ImplicationChecksByTransitivity, 1236.4ms TimeCoverageRelationStatistics Valid=391, Invalid=4165, Unknown=0, NotChecked=0, Total=4556 [2021-08-21 13:34:23,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6314 states. [2021-08-21 13:34:23,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6314 to 5021. [2021-08-21 13:34:23,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5021 states, 5020 states have (on average 3.394223107569721) internal successors, (17039), 5020 states have internal predecessors, (17039), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:34:23,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5021 states to 5021 states and 17039 transitions. [2021-08-21 13:34:23,999 INFO L78 Accepts]: Start accepts. Automaton has 5021 states and 17039 transitions. Word has length 39 [2021-08-21 13:34:23,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:34:23,999 INFO L470 AbstractCegarLoop]: Abstraction has 5021 states and 17039 transitions. [2021-08-21 13:34:23,999 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:34:23,999 INFO L276 IsEmpty]: Start isEmpty. Operand 5021 states and 17039 transitions. [2021-08-21 13:34:24,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:34:24,006 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:34:24,006 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:34:24,006 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable282 [2021-08-21 13:34:24,006 INFO L402 AbstractCegarLoop]: === Iteration 284 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:34:24,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:34:24,006 INFO L82 PathProgramCache]: Analyzing trace with hash -1906333102, now seen corresponding path program 284 times [2021-08-21 13:34:24,006 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:34:24,007 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [52386625] [2021-08-21 13:34:24,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:34:24,007 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:34:24,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:34:24,292 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:34:24,292 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:34:24,292 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [52386625] [2021-08-21 13:34:24,292 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [52386625] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:34:24,292 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:34:24,292 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-08-21 13:34:24,292 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609362152] [2021-08-21 13:34:24,292 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-08-21 13:34:24,292 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:34:24,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-08-21 13:34:24,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-08-21 13:34:24,293 INFO L87 Difference]: Start difference. First operand 5021 states and 17039 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:34:26,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:34:26,126 INFO L93 Difference]: Finished difference Result 6267 states and 21138 transitions. [2021-08-21 13:34:26,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-08-21 13:34:26,126 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:34:26,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:34:26,140 INFO L225 Difference]: With dead ends: 6267 [2021-08-21 13:34:26,140 INFO L226 Difference]: Without dead ends: 6191 [2021-08-21 13:34:26,141 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 994 ImplicationChecksByTransitivity, 1120.0ms TimeCoverageRelationStatistics Valid=348, Invalid=3434, Unknown=0, NotChecked=0, Total=3782 [2021-08-21 13:34:26,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6191 states. [2021-08-21 13:34:26,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6191 to 5035. [2021-08-21 13:34:26,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5035 states, 5034 states have (on average 3.3907429479539135) internal successors, (17069), 5034 states have internal predecessors, (17069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:34:26,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5035 states to 5035 states and 17069 transitions. [2021-08-21 13:34:26,222 INFO L78 Accepts]: Start accepts. Automaton has 5035 states and 17069 transitions. Word has length 39 [2021-08-21 13:34:26,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:34:26,222 INFO L470 AbstractCegarLoop]: Abstraction has 5035 states and 17069 transitions. [2021-08-21 13:34:26,222 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:34:26,222 INFO L276 IsEmpty]: Start isEmpty. Operand 5035 states and 17069 transitions. [2021-08-21 13:34:26,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:34:26,229 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:34:26,229 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:34:26,229 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable283 [2021-08-21 13:34:26,229 INFO L402 AbstractCegarLoop]: === Iteration 285 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:34:26,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:34:26,229 INFO L82 PathProgramCache]: Analyzing trace with hash 840711860, now seen corresponding path program 285 times [2021-08-21 13:34:26,229 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:34:26,229 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [9783575] [2021-08-21 13:34:26,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:34:26,229 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:34:26,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:34:26,534 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:34:26,534 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:34:26,534 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [9783575] [2021-08-21 13:34:26,534 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [9783575] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:34:26,534 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:34:26,534 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 13:34:26,535 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035885405] [2021-08-21 13:34:26,535 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 13:34:26,535 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:34:26,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 13:34:26,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-08-21 13:34:26,535 INFO L87 Difference]: Start difference. First operand 5035 states and 17069 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:34:28,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:34:28,479 INFO L93 Difference]: Finished difference Result 6306 states and 21210 transitions. [2021-08-21 13:34:28,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2021-08-21 13:34:28,479 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:34:28,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:34:28,492 INFO L225 Difference]: With dead ends: 6306 [2021-08-21 13:34:28,492 INFO L226 Difference]: Without dead ends: 6215 [2021-08-21 13:34:28,492 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1084 ImplicationChecksByTransitivity, 1249.1ms TimeCoverageRelationStatistics Valid=366, Invalid=3794, Unknown=0, NotChecked=0, Total=4160 [2021-08-21 13:34:28,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6215 states. [2021-08-21 13:34:28,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6215 to 5011. [2021-08-21 13:34:28,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5011 states, 5010 states have (on average 3.396007984031936) internal successors, (17014), 5010 states have internal predecessors, (17014), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:34:28,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5011 states to 5011 states and 17014 transitions. [2021-08-21 13:34:28,567 INFO L78 Accepts]: Start accepts. Automaton has 5011 states and 17014 transitions. Word has length 39 [2021-08-21 13:34:28,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:34:28,567 INFO L470 AbstractCegarLoop]: Abstraction has 5011 states and 17014 transitions. [2021-08-21 13:34:28,567 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:34:28,567 INFO L276 IsEmpty]: Start isEmpty. Operand 5011 states and 17014 transitions. [2021-08-21 13:34:28,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:34:28,573 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:34:28,574 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:34:28,574 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable284 [2021-08-21 13:34:28,574 INFO L402 AbstractCegarLoop]: === Iteration 286 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:34:28,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:34:28,574 INFO L82 PathProgramCache]: Analyzing trace with hash -1138992522, now seen corresponding path program 286 times [2021-08-21 13:34:28,574 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:34:28,574 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1007346114] [2021-08-21 13:34:28,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:34:28,574 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:34:28,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:34:28,782 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:34:28,783 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:34:28,783 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1007346114] [2021-08-21 13:34:28,783 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1007346114] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:34:28,783 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:34:28,783 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 13:34:28,783 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702682600] [2021-08-21 13:34:28,783 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 13:34:28,783 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:34:28,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 13:34:28,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-08-21 13:34:28,783 INFO L87 Difference]: Start difference. First operand 5011 states and 17014 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:34:31,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:34:31,526 INFO L93 Difference]: Finished difference Result 9529 states and 31445 transitions. [2021-08-21 13:34:31,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2021-08-21 13:34:31,526 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:34:31,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:34:31,546 INFO L225 Difference]: With dead ends: 9529 [2021-08-21 13:34:31,546 INFO L226 Difference]: Without dead ends: 9245 [2021-08-21 13:34:31,547 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2875 ImplicationChecksByTransitivity, 1596.7ms TimeCoverageRelationStatistics Valid=687, Invalid=8243, Unknown=0, NotChecked=0, Total=8930 [2021-08-21 13:34:31,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9245 states. [2021-08-21 13:34:31,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9245 to 5218. [2021-08-21 13:34:31,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5218 states, 5217 states have (on average 3.39850488786659) internal successors, (17730), 5217 states have internal predecessors, (17730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:34:31,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5218 states to 5218 states and 17730 transitions. [2021-08-21 13:34:31,654 INFO L78 Accepts]: Start accepts. Automaton has 5218 states and 17730 transitions. Word has length 39 [2021-08-21 13:34:31,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:34:31,654 INFO L470 AbstractCegarLoop]: Abstraction has 5218 states and 17730 transitions. [2021-08-21 13:34:31,654 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:34:31,654 INFO L276 IsEmpty]: Start isEmpty. Operand 5218 states and 17730 transitions. [2021-08-21 13:34:31,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:34:31,661 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:34:31,661 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:34:31,662 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable285 [2021-08-21 13:34:31,662 INFO L402 AbstractCegarLoop]: === Iteration 287 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:34:31,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:34:31,662 INFO L82 PathProgramCache]: Analyzing trace with hash 33659700, now seen corresponding path program 287 times [2021-08-21 13:34:31,662 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:34:31,662 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1537719198] [2021-08-21 13:34:31,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:34:31,662 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:34:31,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:34:31,871 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:34:31,871 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:34:31,871 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1537719198] [2021-08-21 13:34:31,871 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1537719198] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:34:31,872 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:34:31,872 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 13:34:31,872 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96269511] [2021-08-21 13:34:31,872 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 13:34:31,872 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:34:31,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 13:34:31,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-08-21 13:34:31,872 INFO L87 Difference]: Start difference. First operand 5218 states and 17730 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:34:34,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:34:34,751 INFO L93 Difference]: Finished difference Result 9655 states and 31861 transitions. [2021-08-21 13:34:34,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2021-08-21 13:34:34,752 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:34:34,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:34:34,771 INFO L225 Difference]: With dead ends: 9655 [2021-08-21 13:34:34,771 INFO L226 Difference]: Without dead ends: 9493 [2021-08-21 13:34:34,772 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2733 ImplicationChecksByTransitivity, 1653.7ms TimeCoverageRelationStatistics Valid=669, Invalid=7887, Unknown=0, NotChecked=0, Total=8556 [2021-08-21 13:34:34,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9493 states. [2021-08-21 13:34:34,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9493 to 5231. [2021-08-21 13:34:34,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5231 states, 5230 states have (on average 3.397131931166348) internal successors, (17767), 5230 states have internal predecessors, (17767), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:34:34,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5231 states to 5231 states and 17767 transitions. [2021-08-21 13:34:34,980 INFO L78 Accepts]: Start accepts. Automaton has 5231 states and 17767 transitions. Word has length 39 [2021-08-21 13:34:34,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:34:34,980 INFO L470 AbstractCegarLoop]: Abstraction has 5231 states and 17767 transitions. [2021-08-21 13:34:34,980 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:34:34,980 INFO L276 IsEmpty]: Start isEmpty. Operand 5231 states and 17767 transitions. [2021-08-21 13:34:34,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:34:34,987 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:34:34,987 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:34:34,987 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable286 [2021-08-21 13:34:34,987 INFO L402 AbstractCegarLoop]: === Iteration 288 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:34:34,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:34:34,988 INFO L82 PathProgramCache]: Analyzing trace with hash -34085180, now seen corresponding path program 288 times [2021-08-21 13:34:34,988 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:34:34,988 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [368637120] [2021-08-21 13:34:34,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:34:34,988 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:34:34,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:34:35,284 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:34:35,284 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:34:35,284 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [368637120] [2021-08-21 13:34:35,284 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [368637120] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:34:35,284 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:34:35,284 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 13:34:35,284 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1555707271] [2021-08-21 13:34:35,285 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 13:34:35,285 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:34:35,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 13:34:35,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-08-21 13:34:35,285 INFO L87 Difference]: Start difference. First operand 5231 states and 17767 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:34:38,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:34:38,599 INFO L93 Difference]: Finished difference Result 9373 states and 31060 transitions. [2021-08-21 13:34:38,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2021-08-21 13:34:38,599 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:34:38,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:34:38,619 INFO L225 Difference]: With dead ends: 9373 [2021-08-21 13:34:38,619 INFO L226 Difference]: Without dead ends: 9222 [2021-08-21 13:34:38,620 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2733 ImplicationChecksByTransitivity, 1958.1ms TimeCoverageRelationStatistics Valid=650, Invalid=7906, Unknown=0, NotChecked=0, Total=8556 [2021-08-21 13:34:38,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9222 states. [2021-08-21 13:34:38,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9222 to 5208. [2021-08-21 13:34:38,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5208 states, 5207 states have (on average 3.396773574034953) internal successors, (17687), 5207 states have internal predecessors, (17687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:34:38,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5208 states to 5208 states and 17687 transitions. [2021-08-21 13:34:38,718 INFO L78 Accepts]: Start accepts. Automaton has 5208 states and 17687 transitions. Word has length 39 [2021-08-21 13:34:38,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:34:38,719 INFO L470 AbstractCegarLoop]: Abstraction has 5208 states and 17687 transitions. [2021-08-21 13:34:38,719 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:34:38,719 INFO L276 IsEmpty]: Start isEmpty. Operand 5208 states and 17687 transitions. [2021-08-21 13:34:38,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:34:38,726 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:34:38,726 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:34:38,726 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable287 [2021-08-21 13:34:38,726 INFO L402 AbstractCegarLoop]: === Iteration 289 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:34:38,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:34:38,726 INFO L82 PathProgramCache]: Analyzing trace with hash -1961726938, now seen corresponding path program 289 times [2021-08-21 13:34:38,726 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:34:38,726 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1312843186] [2021-08-21 13:34:38,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:34:38,726 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:34:38,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:34:39,016 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:34:39,016 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:34:39,016 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1312843186] [2021-08-21 13:34:39,016 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1312843186] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:34:39,016 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:34:39,016 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 13:34:39,016 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596431186] [2021-08-21 13:34:39,016 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 13:34:39,016 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:34:39,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 13:34:39,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-08-21 13:34:39,017 INFO L87 Difference]: Start difference. First operand 5208 states and 17687 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:34:41,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:34:41,614 INFO L93 Difference]: Finished difference Result 9549 states and 31606 transitions. [2021-08-21 13:34:41,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2021-08-21 13:34:41,614 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:34:41,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:34:41,635 INFO L225 Difference]: With dead ends: 9549 [2021-08-21 13:34:41,635 INFO L226 Difference]: Without dead ends: 9409 [2021-08-21 13:34:41,636 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2595 ImplicationChecksByTransitivity, 1553.6ms TimeCoverageRelationStatistics Valid=633, Invalid=7557, Unknown=0, NotChecked=0, Total=8190 [2021-08-21 13:34:41,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9409 states. [2021-08-21 13:34:41,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9409 to 5159. [2021-08-21 13:34:41,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5159 states, 5158 states have (on average 3.3970531213648703) internal successors, (17522), 5158 states have internal predecessors, (17522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:34:41,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5159 states to 5159 states and 17522 transitions. [2021-08-21 13:34:41,748 INFO L78 Accepts]: Start accepts. Automaton has 5159 states and 17522 transitions. Word has length 39 [2021-08-21 13:34:41,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:34:41,748 INFO L470 AbstractCegarLoop]: Abstraction has 5159 states and 17522 transitions. [2021-08-21 13:34:41,748 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:34:41,748 INFO L276 IsEmpty]: Start isEmpty. Operand 5159 states and 17522 transitions. [2021-08-21 13:34:41,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:34:41,756 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:34:41,756 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:34:41,756 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable288 [2021-08-21 13:34:41,756 INFO L402 AbstractCegarLoop]: === Iteration 290 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:34:41,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:34:41,757 INFO L82 PathProgramCache]: Analyzing trace with hash -957970022, now seen corresponding path program 290 times [2021-08-21 13:34:41,757 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:34:41,757 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [43432691] [2021-08-21 13:34:41,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:34:41,757 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:34:41,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:34:42,005 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:34:42,005 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:34:42,005 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [43432691] [2021-08-21 13:34:42,005 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [43432691] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:34:42,005 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:34:42,005 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 13:34:42,006 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390739693] [2021-08-21 13:34:42,006 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 13:34:42,006 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:34:42,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 13:34:42,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-08-21 13:34:42,006 INFO L87 Difference]: Start difference. First operand 5159 states and 17522 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:34:43,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:34:43,344 INFO L93 Difference]: Finished difference Result 5660 states and 19032 transitions. [2021-08-21 13:34:43,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-08-21 13:34:43,344 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:34:43,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:34:43,355 INFO L225 Difference]: With dead ends: 5660 [2021-08-21 13:34:43,356 INFO L226 Difference]: Without dead ends: 5593 [2021-08-21 13:34:43,356 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 569 ImplicationChecksByTransitivity, 784.3ms TimeCoverageRelationStatistics Valid=254, Invalid=2398, Unknown=0, NotChecked=0, Total=2652 [2021-08-21 13:34:43,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5593 states. [2021-08-21 13:34:43,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5593 to 5171. [2021-08-21 13:34:43,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5171 states, 5170 states have (on average 3.3941972920696326) internal successors, (17548), 5170 states have internal predecessors, (17548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:34:43,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5171 states to 5171 states and 17548 transitions. [2021-08-21 13:34:43,433 INFO L78 Accepts]: Start accepts. Automaton has 5171 states and 17548 transitions. Word has length 39 [2021-08-21 13:34:43,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:34:43,433 INFO L470 AbstractCegarLoop]: Abstraction has 5171 states and 17548 transitions. [2021-08-21 13:34:43,433 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:34:43,433 INFO L276 IsEmpty]: Start isEmpty. Operand 5171 states and 17548 transitions. [2021-08-21 13:34:43,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:34:43,440 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:34:43,440 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:34:43,441 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable289 [2021-08-21 13:34:43,441 INFO L402 AbstractCegarLoop]: === Iteration 291 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:34:43,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:34:43,441 INFO L82 PathProgramCache]: Analyzing trace with hash -1088564870, now seen corresponding path program 291 times [2021-08-21 13:34:43,441 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:34:43,441 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [155551146] [2021-08-21 13:34:43,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:34:43,441 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:34:43,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:34:43,696 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:34:43,696 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:34:43,696 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [155551146] [2021-08-21 13:34:43,696 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [155551146] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:34:43,696 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:34:43,696 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 13:34:43,696 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347091320] [2021-08-21 13:34:43,696 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 13:34:43,696 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:34:43,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 13:34:43,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-08-21 13:34:43,697 INFO L87 Difference]: Start difference. First operand 5171 states and 17548 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:34:44,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:34:44,966 INFO L93 Difference]: Finished difference Result 5592 states and 18836 transitions. [2021-08-21 13:34:44,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-08-21 13:34:44,966 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:34:44,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:34:44,978 INFO L225 Difference]: With dead ends: 5592 [2021-08-21 13:34:44,978 INFO L226 Difference]: Without dead ends: 5529 [2021-08-21 13:34:44,978 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 536 ImplicationChecksByTransitivity, 785.5ms TimeCoverageRelationStatistics Valid=255, Invalid=2295, Unknown=0, NotChecked=0, Total=2550 [2021-08-21 13:34:44,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5529 states. [2021-08-21 13:34:45,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5529 to 5163. [2021-08-21 13:34:45,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5163 states, 5162 states have (on average 3.395583107322743) internal successors, (17528), 5162 states have internal predecessors, (17528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:34:45,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5163 states to 5163 states and 17528 transitions. [2021-08-21 13:34:45,138 INFO L78 Accepts]: Start accepts. Automaton has 5163 states and 17528 transitions. Word has length 39 [2021-08-21 13:34:45,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:34:45,138 INFO L470 AbstractCegarLoop]: Abstraction has 5163 states and 17528 transitions. [2021-08-21 13:34:45,138 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:34:45,138 INFO L276 IsEmpty]: Start isEmpty. Operand 5163 states and 17528 transitions. [2021-08-21 13:34:45,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:34:45,145 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:34:45,145 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:34:45,145 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable290 [2021-08-21 13:34:45,145 INFO L402 AbstractCegarLoop]: === Iteration 292 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:34:45,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:34:45,146 INFO L82 PathProgramCache]: Analyzing trace with hash -1224243462, now seen corresponding path program 292 times [2021-08-21 13:34:45,146 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:34:45,146 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [357830775] [2021-08-21 13:34:45,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:34:45,146 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:34:45,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:34:45,457 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:34:45,457 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:34:45,458 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [357830775] [2021-08-21 13:34:45,458 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [357830775] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:34:45,458 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:34:45,458 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 13:34:45,458 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [222689741] [2021-08-21 13:34:45,458 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 13:34:45,458 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:34:45,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 13:34:45,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-08-21 13:34:45,458 INFO L87 Difference]: Start difference. First operand 5163 states and 17528 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:34:47,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:34:47,368 INFO L93 Difference]: Finished difference Result 5838 states and 19469 transitions. [2021-08-21 13:34:47,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2021-08-21 13:34:47,368 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:34:47,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:34:47,380 INFO L225 Difference]: With dead ends: 5838 [2021-08-21 13:34:47,380 INFO L226 Difference]: Without dead ends: 5795 [2021-08-21 13:34:47,381 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1125 ImplicationChecksByTransitivity, 1238.8ms TimeCoverageRelationStatistics Valid=377, Invalid=3913, Unknown=0, NotChecked=0, Total=4290 [2021-08-21 13:34:47,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5795 states. [2021-08-21 13:34:47,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5795 to 5171. [2021-08-21 13:34:47,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5171 states, 5170 states have (on average 3.3941972920696326) internal successors, (17548), 5170 states have internal predecessors, (17548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:34:47,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5171 states to 5171 states and 17548 transitions. [2021-08-21 13:34:47,463 INFO L78 Accepts]: Start accepts. Automaton has 5171 states and 17548 transitions. Word has length 39 [2021-08-21 13:34:47,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:34:47,463 INFO L470 AbstractCegarLoop]: Abstraction has 5171 states and 17548 transitions. [2021-08-21 13:34:47,463 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:34:47,463 INFO L276 IsEmpty]: Start isEmpty. Operand 5171 states and 17548 transitions. [2021-08-21 13:34:47,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:34:47,471 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:34:47,471 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:34:47,471 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable291 [2021-08-21 13:34:47,471 INFO L402 AbstractCegarLoop]: === Iteration 293 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:34:47,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:34:47,471 INFO L82 PathProgramCache]: Analyzing trace with hash 1290125532, now seen corresponding path program 293 times [2021-08-21 13:34:47,471 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:34:47,471 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1118822241] [2021-08-21 13:34:47,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:34:47,471 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:34:47,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:34:47,804 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:34:47,804 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:34:47,804 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1118822241] [2021-08-21 13:34:47,804 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1118822241] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:34:47,804 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:34:47,804 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 13:34:47,804 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [545199789] [2021-08-21 13:34:47,805 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 13:34:47,805 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:34:47,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 13:34:47,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-08-21 13:34:47,805 INFO L87 Difference]: Start difference. First operand 5171 states and 17548 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:34:49,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:34:49,530 INFO L93 Difference]: Finished difference Result 5794 states and 19351 transitions. [2021-08-21 13:34:49,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2021-08-21 13:34:49,530 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:34:49,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:34:49,543 INFO L225 Difference]: With dead ends: 5794 [2021-08-21 13:34:49,543 INFO L226 Difference]: Without dead ends: 5742 [2021-08-21 13:34:49,544 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1076 ImplicationChecksByTransitivity, 1159.9ms TimeCoverageRelationStatistics Valid=367, Invalid=3793, Unknown=0, NotChecked=0, Total=4160 [2021-08-21 13:34:49,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5742 states. [2021-08-21 13:34:49,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5742 to 5163. [2021-08-21 13:34:49,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5163 states, 5162 states have (on average 3.395583107322743) internal successors, (17528), 5162 states have internal predecessors, (17528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:34:49,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5163 states to 5163 states and 17528 transitions. [2021-08-21 13:34:49,623 INFO L78 Accepts]: Start accepts. Automaton has 5163 states and 17528 transitions. Word has length 39 [2021-08-21 13:34:49,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:34:49,623 INFO L470 AbstractCegarLoop]: Abstraction has 5163 states and 17528 transitions. [2021-08-21 13:34:49,623 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:34:49,623 INFO L276 IsEmpty]: Start isEmpty. Operand 5163 states and 17528 transitions. [2021-08-21 13:34:49,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:34:49,631 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:34:49,631 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:34:49,631 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable292 [2021-08-21 13:34:49,631 INFO L402 AbstractCegarLoop]: === Iteration 294 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:34:49,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:34:49,631 INFO L82 PathProgramCache]: Analyzing trace with hash -305759892, now seen corresponding path program 294 times [2021-08-21 13:34:49,631 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:34:49,631 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2045165972] [2021-08-21 13:34:49,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:34:49,631 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:34:49,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:34:49,829 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:34:49,829 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:34:49,829 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2045165972] [2021-08-21 13:34:49,829 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2045165972] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:34:49,829 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:34:49,829 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 13:34:49,829 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1477644742] [2021-08-21 13:34:49,830 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 13:34:49,830 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:34:49,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 13:34:49,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-08-21 13:34:49,830 INFO L87 Difference]: Start difference. First operand 5163 states and 17528 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:34:50,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:34:50,892 INFO L93 Difference]: Finished difference Result 5720 states and 19110 transitions. [2021-08-21 13:34:50,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-08-21 13:34:50,892 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:34:50,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:34:50,904 INFO L225 Difference]: With dead ends: 5720 [2021-08-21 13:34:50,904 INFO L226 Difference]: Without dead ends: 5665 [2021-08-21 13:34:50,904 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 632 ImplicationChecksByTransitivity, 624.8ms TimeCoverageRelationStatistics Valid=289, Invalid=2573, Unknown=0, NotChecked=0, Total=2862 [2021-08-21 13:34:50,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5665 states. [2021-08-21 13:34:50,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5665 to 5165. [2021-08-21 13:34:50,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5165 states, 5164 states have (on average 3.3948489542989932) internal successors, (17531), 5164 states have internal predecessors, (17531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:34:50,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5165 states to 5165 states and 17531 transitions. [2021-08-21 13:34:50,985 INFO L78 Accepts]: Start accepts. Automaton has 5165 states and 17531 transitions. Word has length 39 [2021-08-21 13:34:50,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:34:50,985 INFO L470 AbstractCegarLoop]: Abstraction has 5165 states and 17531 transitions. [2021-08-21 13:34:50,985 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:34:50,985 INFO L276 IsEmpty]: Start isEmpty. Operand 5165 states and 17531 transitions. [2021-08-21 13:34:50,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:34:50,993 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:34:50,993 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:34:50,993 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable293 [2021-08-21 13:34:50,993 INFO L402 AbstractCegarLoop]: === Iteration 295 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:34:50,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:34:50,994 INFO L82 PathProgramCache]: Analyzing trace with hash 866892330, now seen corresponding path program 295 times [2021-08-21 13:34:50,994 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:34:50,994 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1205676574] [2021-08-21 13:34:50,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:34:50,994 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:34:50,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:34:51,193 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:34:51,194 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:34:51,194 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1205676574] [2021-08-21 13:34:51,194 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1205676574] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:34:51,194 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:34:51,194 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 13:34:51,194 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308233359] [2021-08-21 13:34:51,194 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 13:34:51,194 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:34:51,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 13:34:51,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-08-21 13:34:51,194 INFO L87 Difference]: Start difference. First operand 5165 states and 17531 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:34:52,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:34:52,136 INFO L93 Difference]: Finished difference Result 5655 states and 18958 transitions. [2021-08-21 13:34:52,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-08-21 13:34:52,136 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:34:52,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:34:52,148 INFO L225 Difference]: With dead ends: 5655 [2021-08-21 13:34:52,148 INFO L226 Difference]: Without dead ends: 5609 [2021-08-21 13:34:52,149 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 529 ImplicationChecksByTransitivity, 582.0ms TimeCoverageRelationStatistics Valid=260, Invalid=2290, Unknown=0, NotChecked=0, Total=2550 [2021-08-21 13:34:52,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5609 states. [2021-08-21 13:34:52,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5609 to 5169. [2021-08-21 13:34:52,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5169 states, 5168 states have (on average 3.393769349845201) internal successors, (17539), 5168 states have internal predecessors, (17539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:34:52,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5169 states to 5169 states and 17539 transitions. [2021-08-21 13:34:52,295 INFO L78 Accepts]: Start accepts. Automaton has 5169 states and 17539 transitions. Word has length 39 [2021-08-21 13:34:52,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:34:52,295 INFO L470 AbstractCegarLoop]: Abstraction has 5169 states and 17539 transitions. [2021-08-21 13:34:52,295 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:34:52,295 INFO L276 IsEmpty]: Start isEmpty. Operand 5169 states and 17539 transitions. [2021-08-21 13:34:52,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:34:52,303 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:34:52,303 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:34:52,303 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable294 [2021-08-21 13:34:52,303 INFO L402 AbstractCegarLoop]: === Iteration 296 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:34:52,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:34:52,304 INFO L82 PathProgramCache]: Analyzing trace with hash 619426168, now seen corresponding path program 296 times [2021-08-21 13:34:52,304 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:34:52,304 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1320893673] [2021-08-21 13:34:52,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:34:52,304 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:34:52,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:34:52,500 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:34:52,500 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:34:52,500 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1320893673] [2021-08-21 13:34:52,500 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1320893673] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:34:52,500 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:34:52,500 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 13:34:52,500 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1386012030] [2021-08-21 13:34:52,500 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 13:34:52,500 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:34:52,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 13:34:52,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-08-21 13:34:52,501 INFO L87 Difference]: Start difference. First operand 5169 states and 17539 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:34:53,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:34:53,891 INFO L93 Difference]: Finished difference Result 5619 states and 18879 transitions. [2021-08-21 13:34:53,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-08-21 13:34:53,892 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:34:53,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:34:53,904 INFO L225 Difference]: With dead ends: 5619 [2021-08-21 13:34:53,904 INFO L226 Difference]: Without dead ends: 5570 [2021-08-21 13:34:53,905 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 560 ImplicationChecksByTransitivity, 849.1ms TimeCoverageRelationStatistics Valid=273, Invalid=2379, Unknown=0, NotChecked=0, Total=2652 [2021-08-21 13:34:53,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5570 states. [2021-08-21 13:34:53,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5570 to 5159. [2021-08-21 13:34:53,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5159 states, 5158 states have (on average 3.3962776269872044) internal successors, (17518), 5158 states have internal predecessors, (17518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:34:54,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5159 states to 5159 states and 17518 transitions. [2021-08-21 13:34:54,001 INFO L78 Accepts]: Start accepts. Automaton has 5159 states and 17518 transitions. Word has length 39 [2021-08-21 13:34:54,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:34:54,001 INFO L470 AbstractCegarLoop]: Abstraction has 5159 states and 17518 transitions. [2021-08-21 13:34:54,001 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:34:54,001 INFO L276 IsEmpty]: Start isEmpty. Operand 5159 states and 17518 transitions. [2021-08-21 13:34:54,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:34:54,010 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:34:54,010 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:34:54,010 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable295 [2021-08-21 13:34:54,010 INFO L402 AbstractCegarLoop]: === Iteration 297 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:34:54,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:34:54,010 INFO L82 PathProgramCache]: Analyzing trace with hash -2136665606, now seen corresponding path program 297 times [2021-08-21 13:34:54,010 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:34:54,010 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1751588248] [2021-08-21 13:34:54,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:34:54,010 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:34:54,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:34:54,275 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:34:54,275 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:34:54,275 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1751588248] [2021-08-21 13:34:54,275 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1751588248] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:34:54,275 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:34:54,275 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 13:34:54,276 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [621524388] [2021-08-21 13:34:54,276 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 13:34:54,276 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:34:54,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 13:34:54,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-08-21 13:34:54,276 INFO L87 Difference]: Start difference. First operand 5159 states and 17518 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:34:55,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:34:55,619 INFO L93 Difference]: Finished difference Result 5632 states and 18972 transitions. [2021-08-21 13:34:55,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-08-21 13:34:55,620 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:34:55,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:34:55,631 INFO L225 Difference]: With dead ends: 5632 [2021-08-21 13:34:55,631 INFO L226 Difference]: Without dead ends: 5565 [2021-08-21 13:34:55,631 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 477 ImplicationChecksByTransitivity, 777.9ms TimeCoverageRelationStatistics Valid=218, Invalid=2134, Unknown=0, NotChecked=0, Total=2352 [2021-08-21 13:34:55,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5565 states. [2021-08-21 13:34:55,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5565 to 5215. [2021-08-21 13:34:55,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5215 states, 5214 states have (on average 3.3908707326428846) internal successors, (17680), 5214 states have internal predecessors, (17680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:34:55,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5215 states to 5215 states and 17680 transitions. [2021-08-21 13:34:55,702 INFO L78 Accepts]: Start accepts. Automaton has 5215 states and 17680 transitions. Word has length 39 [2021-08-21 13:34:55,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:34:55,703 INFO L470 AbstractCegarLoop]: Abstraction has 5215 states and 17680 transitions. [2021-08-21 13:34:55,703 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:34:55,703 INFO L276 IsEmpty]: Start isEmpty. Operand 5215 states and 17680 transitions. [2021-08-21 13:34:55,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:34:55,710 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:34:55,710 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:34:55,710 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable296 [2021-08-21 13:34:55,710 INFO L402 AbstractCegarLoop]: === Iteration 298 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:34:55,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:34:55,710 INFO L82 PathProgramCache]: Analyzing trace with hash 2027706842, now seen corresponding path program 298 times [2021-08-21 13:34:55,710 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:34:55,710 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1533128256] [2021-08-21 13:34:55,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:34:55,710 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:34:55,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:34:56,019 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:34:56,019 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:34:56,019 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1533128256] [2021-08-21 13:34:56,019 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1533128256] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:34:56,019 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:34:56,019 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 13:34:56,019 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [448972684] [2021-08-21 13:34:56,020 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 13:34:56,020 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:34:56,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 13:34:56,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-08-21 13:34:56,020 INFO L87 Difference]: Start difference. First operand 5215 states and 17680 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:34:57,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:34:57,392 INFO L93 Difference]: Finished difference Result 5628 states and 18956 transitions. [2021-08-21 13:34:57,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-08-21 13:34:57,392 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:34:57,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:34:57,403 INFO L225 Difference]: With dead ends: 5628 [2021-08-21 13:34:57,404 INFO L226 Difference]: Without dead ends: 5565 [2021-08-21 13:34:57,404 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 444 ImplicationChecksByTransitivity, 844.1ms TimeCoverageRelationStatistics Valid=222, Invalid=2034, Unknown=0, NotChecked=0, Total=2256 [2021-08-21 13:34:57,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5565 states. [2021-08-21 13:34:57,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5565 to 5247. [2021-08-21 13:34:57,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5247 states, 5246 states have (on average 3.3861990087685854) internal successors, (17764), 5246 states have internal predecessors, (17764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:34:57,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5247 states to 5247 states and 17764 transitions. [2021-08-21 13:34:57,474 INFO L78 Accepts]: Start accepts. Automaton has 5247 states and 17764 transitions. Word has length 39 [2021-08-21 13:34:57,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:34:57,474 INFO L470 AbstractCegarLoop]: Abstraction has 5247 states and 17764 transitions. [2021-08-21 13:34:57,475 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:34:57,475 INFO L276 IsEmpty]: Start isEmpty. Operand 5247 states and 17764 transitions. [2021-08-21 13:34:57,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:34:57,481 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:34:57,481 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:34:57,482 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable297 [2021-08-21 13:34:57,482 INFO L402 AbstractCegarLoop]: === Iteration 299 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:34:57,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:34:57,482 INFO L82 PathProgramCache]: Analyzing trace with hash 1497806394, now seen corresponding path program 299 times [2021-08-21 13:34:57,482 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:34:57,482 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [334897688] [2021-08-21 13:34:57,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:34:57,482 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:34:57,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:34:57,776 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:34:57,776 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:34:57,776 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [334897688] [2021-08-21 13:34:57,776 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [334897688] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:34:57,776 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:34:57,776 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 13:34:57,776 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1766042087] [2021-08-21 13:34:57,776 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 13:34:57,776 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:34:57,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 13:34:57,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-08-21 13:34:57,777 INFO L87 Difference]: Start difference. First operand 5247 states and 17764 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:34:59,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:34:59,145 INFO L93 Difference]: Finished difference Result 5652 states and 19016 transitions. [2021-08-21 13:34:59,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-08-21 13:34:59,146 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:34:59,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:34:59,157 INFO L225 Difference]: With dead ends: 5652 [2021-08-21 13:34:59,158 INFO L226 Difference]: Without dead ends: 5529 [2021-08-21 13:34:59,158 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 472 ImplicationChecksByTransitivity, 815.5ms TimeCoverageRelationStatistics Valid=230, Invalid=2122, Unknown=0, NotChecked=0, Total=2352 [2021-08-21 13:34:59,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5529 states. [2021-08-21 13:34:59,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5529 to 5199. [2021-08-21 13:34:59,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5199 states, 5198 states have (on average 3.391689111196614) internal successors, (17630), 5198 states have internal predecessors, (17630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:34:59,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5199 states to 5199 states and 17630 transitions. [2021-08-21 13:34:59,238 INFO L78 Accepts]: Start accepts. Automaton has 5199 states and 17630 transitions. Word has length 39 [2021-08-21 13:34:59,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:34:59,238 INFO L470 AbstractCegarLoop]: Abstraction has 5199 states and 17630 transitions. [2021-08-21 13:34:59,238 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:34:59,238 INFO L276 IsEmpty]: Start isEmpty. Operand 5199 states and 17630 transitions. [2021-08-21 13:34:59,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:34:59,246 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:34:59,246 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:34:59,246 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable298 [2021-08-21 13:34:59,246 INFO L402 AbstractCegarLoop]: === Iteration 300 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:34:59,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:34:59,246 INFO L82 PathProgramCache]: Analyzing trace with hash 779395224, now seen corresponding path program 300 times [2021-08-21 13:34:59,247 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:34:59,247 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1387692006] [2021-08-21 13:34:59,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:34:59,247 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:34:59,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:34:59,552 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:34:59,552 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:34:59,553 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1387692006] [2021-08-21 13:34:59,553 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1387692006] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:34:59,553 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:34:59,553 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 13:34:59,553 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1303090333] [2021-08-21 13:34:59,553 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 13:34:59,553 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:34:59,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 13:34:59,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-08-21 13:34:59,553 INFO L87 Difference]: Start difference. First operand 5199 states and 17630 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:35:02,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:35:02,126 INFO L93 Difference]: Finished difference Result 8272 states and 27771 transitions. [2021-08-21 13:35:02,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2021-08-21 13:35:02,127 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:35:02,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:35:02,146 INFO L225 Difference]: With dead ends: 8272 [2021-08-21 13:35:02,146 INFO L226 Difference]: Without dead ends: 8166 [2021-08-21 13:35:02,147 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1653 ImplicationChecksByTransitivity, 1517.2ms TimeCoverageRelationStatistics Valid=466, Invalid=5234, Unknown=0, NotChecked=0, Total=5700 [2021-08-21 13:35:02,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8166 states. [2021-08-21 13:35:02,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8166 to 5264. [2021-08-21 13:35:02,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5264 states, 5263 states have (on average 3.3878016340490213) internal successors, (17830), 5263 states have internal predecessors, (17830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:35:02,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5264 states to 5264 states and 17830 transitions. [2021-08-21 13:35:02,260 INFO L78 Accepts]: Start accepts. Automaton has 5264 states and 17830 transitions. Word has length 39 [2021-08-21 13:35:02,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:35:02,260 INFO L470 AbstractCegarLoop]: Abstraction has 5264 states and 17830 transitions. [2021-08-21 13:35:02,260 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:35:02,260 INFO L276 IsEmpty]: Start isEmpty. Operand 5264 states and 17830 transitions. [2021-08-21 13:35:02,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:35:02,269 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:35:02,269 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:35:02,269 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable299 [2021-08-21 13:35:02,269 INFO L402 AbstractCegarLoop]: === Iteration 301 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:35:02,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:35:02,269 INFO L82 PathProgramCache]: Analyzing trace with hash -1001203078, now seen corresponding path program 301 times [2021-08-21 13:35:02,269 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:35:02,269 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1661601809] [2021-08-21 13:35:02,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:35:02,269 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:35:02,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:35:02,572 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:35:02,573 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:35:02,573 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1661601809] [2021-08-21 13:35:02,573 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1661601809] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:35:02,573 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:35:02,573 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 13:35:02,573 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [66321129] [2021-08-21 13:35:02,573 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 13:35:02,573 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:35:02,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 13:35:02,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-08-21 13:35:02,573 INFO L87 Difference]: Start difference. First operand 5264 states and 17830 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:35:05,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:35:05,492 INFO L93 Difference]: Finished difference Result 9058 states and 30537 transitions. [2021-08-21 13:35:05,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2021-08-21 13:35:05,493 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:35:05,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:35:05,513 INFO L225 Difference]: With dead ends: 9058 [2021-08-21 13:35:05,514 INFO L226 Difference]: Without dead ends: 9006 [2021-08-21 13:35:05,515 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2140 ImplicationChecksByTransitivity, 1654.4ms TimeCoverageRelationStatistics Valid=521, Invalid=6451, Unknown=0, NotChecked=0, Total=6972 [2021-08-21 13:35:05,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9006 states. [2021-08-21 13:35:05,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9006 to 5234. [2021-08-21 13:35:05,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5234 states, 5233 states have (on average 3.3890693674756354) internal successors, (17735), 5233 states have internal predecessors, (17735), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:35:05,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5234 states to 5234 states and 17735 transitions. [2021-08-21 13:35:05,684 INFO L78 Accepts]: Start accepts. Automaton has 5234 states and 17735 transitions. Word has length 39 [2021-08-21 13:35:05,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:35:05,684 INFO L470 AbstractCegarLoop]: Abstraction has 5234 states and 17735 transitions. [2021-08-21 13:35:05,684 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:35:05,684 INFO L276 IsEmpty]: Start isEmpty. Operand 5234 states and 17735 transitions. [2021-08-21 13:35:05,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:35:05,692 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:35:05,692 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:35:05,692 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable300 [2021-08-21 13:35:05,692 INFO L402 AbstractCegarLoop]: === Iteration 302 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:35:05,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:35:05,693 INFO L82 PathProgramCache]: Analyzing trace with hash 1697878794, now seen corresponding path program 302 times [2021-08-21 13:35:05,693 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:35:05,693 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1657520925] [2021-08-21 13:35:05,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:35:05,693 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:35:05,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:35:05,997 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:35:05,997 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:35:05,997 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1657520925] [2021-08-21 13:35:05,997 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1657520925] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:35:05,997 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:35:05,997 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 13:35:05,997 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646607881] [2021-08-21 13:35:05,997 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 13:35:05,997 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:35:05,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 13:35:05,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-08-21 13:35:05,998 INFO L87 Difference]: Start difference. First operand 5234 states and 17735 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:35:07,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:35:07,787 INFO L93 Difference]: Finished difference Result 7577 states and 25347 transitions. [2021-08-21 13:35:07,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-08-21 13:35:07,787 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:35:07,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:35:07,804 INFO L225 Difference]: With dead ends: 7577 [2021-08-21 13:35:07,804 INFO L226 Difference]: Without dead ends: 7522 [2021-08-21 13:35:07,805 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 785 ImplicationChecksByTransitivity, 993.5ms TimeCoverageRelationStatistics Valid=319, Invalid=2987, Unknown=0, NotChecked=0, Total=3306 [2021-08-21 13:35:07,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7522 states. [2021-08-21 13:35:07,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7522 to 5268. [2021-08-21 13:35:07,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5268 states, 5267 states have (on average 3.3892158724131383) internal successors, (17851), 5267 states have internal predecessors, (17851), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:35:07,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5268 states to 5268 states and 17851 transitions. [2021-08-21 13:35:07,893 INFO L78 Accepts]: Start accepts. Automaton has 5268 states and 17851 transitions. Word has length 39 [2021-08-21 13:35:07,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:35:07,893 INFO L470 AbstractCegarLoop]: Abstraction has 5268 states and 17851 transitions. [2021-08-21 13:35:07,893 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:35:07,894 INFO L276 IsEmpty]: Start isEmpty. Operand 5268 states and 17851 transitions. [2021-08-21 13:35:07,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:35:07,901 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:35:07,901 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:35:07,901 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable301 [2021-08-21 13:35:07,901 INFO L402 AbstractCegarLoop]: === Iteration 303 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:35:07,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:35:07,901 INFO L82 PathProgramCache]: Analyzing trace with hash -1424436280, now seen corresponding path program 303 times [2021-08-21 13:35:07,901 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:35:07,901 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1867604725] [2021-08-21 13:35:07,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:35:07,901 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:35:07,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:35:08,248 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:35:08,248 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:35:08,248 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1867604725] [2021-08-21 13:35:08,248 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1867604725] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:35:08,248 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:35:08,248 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 13:35:08,249 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1673330545] [2021-08-21 13:35:08,249 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 13:35:08,249 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:35:08,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 13:35:08,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-08-21 13:35:08,249 INFO L87 Difference]: Start difference. First operand 5268 states and 17851 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:35:10,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:35:10,316 INFO L93 Difference]: Finished difference Result 8290 states and 27819 transitions. [2021-08-21 13:35:10,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2021-08-21 13:35:10,317 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:35:10,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:35:10,335 INFO L225 Difference]: With dead ends: 8290 [2021-08-21 13:35:10,335 INFO L226 Difference]: Without dead ends: 8230 [2021-08-21 13:35:10,336 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1043 ImplicationChecksByTransitivity, 1113.0ms TimeCoverageRelationStatistics Valid=353, Invalid=3679, Unknown=0, NotChecked=0, Total=4032 [2021-08-21 13:35:10,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8230 states. [2021-08-21 13:35:10,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8230 to 5266. [2021-08-21 13:35:10,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5266 states, 5265 states have (on average 3.389553656220323) internal successors, (17846), 5265 states have internal predecessors, (17846), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:35:10,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5266 states to 5266 states and 17846 transitions. [2021-08-21 13:35:10,439 INFO L78 Accepts]: Start accepts. Automaton has 5266 states and 17846 transitions. Word has length 39 [2021-08-21 13:35:10,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:35:10,439 INFO L470 AbstractCegarLoop]: Abstraction has 5266 states and 17846 transitions. [2021-08-21 13:35:10,439 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:35:10,439 INFO L276 IsEmpty]: Start isEmpty. Operand 5266 states and 17846 transitions. [2021-08-21 13:35:10,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:35:10,447 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:35:10,447 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:35:10,447 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable302 [2021-08-21 13:35:10,447 INFO L402 AbstractCegarLoop]: === Iteration 304 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:35:10,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:35:10,447 INFO L82 PathProgramCache]: Analyzing trace with hash 993127414, now seen corresponding path program 304 times [2021-08-21 13:35:10,447 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:35:10,447 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [434221462] [2021-08-21 13:35:10,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:35:10,448 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:35:10,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:35:10,698 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:35:10,699 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:35:10,699 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [434221462] [2021-08-21 13:35:10,699 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [434221462] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:35:10,699 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:35:10,699 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 13:35:10,699 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [63883199] [2021-08-21 13:35:10,699 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 13:35:10,699 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:35:10,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 13:35:10,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-08-21 13:35:10,699 INFO L87 Difference]: Start difference. First operand 5266 states and 17846 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:35:12,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:35:12,467 INFO L93 Difference]: Finished difference Result 7546 states and 25301 transitions. [2021-08-21 13:35:12,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-08-21 13:35:12,467 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:35:12,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:35:12,483 INFO L225 Difference]: With dead ends: 7546 [2021-08-21 13:35:12,483 INFO L226 Difference]: Without dead ends: 7455 [2021-08-21 13:35:12,484 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 748 ImplicationChecksByTransitivity, 963.8ms TimeCoverageRelationStatistics Valid=300, Invalid=2892, Unknown=0, NotChecked=0, Total=3192 [2021-08-21 13:35:12,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7455 states. [2021-08-21 13:35:12,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7455 to 5266. [2021-08-21 13:35:12,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5266 states, 5265 states have (on average 3.388414055080722) internal successors, (17840), 5265 states have internal predecessors, (17840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:35:12,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5266 states to 5266 states and 17840 transitions. [2021-08-21 13:35:12,578 INFO L78 Accepts]: Start accepts. Automaton has 5266 states and 17840 transitions. Word has length 39 [2021-08-21 13:35:12,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:35:12,578 INFO L470 AbstractCegarLoop]: Abstraction has 5266 states and 17840 transitions. [2021-08-21 13:35:12,578 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:35:12,579 INFO L276 IsEmpty]: Start isEmpty. Operand 5266 states and 17840 transitions. [2021-08-21 13:35:12,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:35:12,586 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:35:12,586 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:35:12,586 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable303 [2021-08-21 13:35:12,586 INFO L402 AbstractCegarLoop]: === Iteration 305 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:35:12,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:35:12,587 INFO L82 PathProgramCache]: Analyzing trace with hash -509354792, now seen corresponding path program 305 times [2021-08-21 13:35:12,587 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:35:12,587 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2118317002] [2021-08-21 13:35:12,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:35:12,587 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:35:12,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:35:12,886 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:35:12,887 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:35:12,887 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2118317002] [2021-08-21 13:35:12,887 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2118317002] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:35:12,887 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:35:12,887 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 13:35:12,887 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1353412810] [2021-08-21 13:35:12,887 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 13:35:12,887 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:35:12,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 13:35:12,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-08-21 13:35:12,887 INFO L87 Difference]: Start difference. First operand 5266 states and 17840 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:35:15,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:35:15,099 INFO L93 Difference]: Finished difference Result 8379 states and 28143 transitions. [2021-08-21 13:35:15,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2021-08-21 13:35:15,100 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:35:15,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:35:15,119 INFO L225 Difference]: With dead ends: 8379 [2021-08-21 13:35:15,119 INFO L226 Difference]: Without dead ends: 8263 [2021-08-21 13:35:15,119 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1040 ImplicationChecksByTransitivity, 1126.6ms TimeCoverageRelationStatistics Valid=338, Invalid=3694, Unknown=0, NotChecked=0, Total=4032 [2021-08-21 13:35:15,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8263 states. [2021-08-21 13:35:15,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8263 to 5228. [2021-08-21 13:35:15,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5228 states, 5227 states have (on average 3.3906638607231683) internal successors, (17723), 5227 states have internal predecessors, (17723), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:35:15,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5228 states to 5228 states and 17723 transitions. [2021-08-21 13:35:15,222 INFO L78 Accepts]: Start accepts. Automaton has 5228 states and 17723 transitions. Word has length 39 [2021-08-21 13:35:15,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:35:15,222 INFO L470 AbstractCegarLoop]: Abstraction has 5228 states and 17723 transitions. [2021-08-21 13:35:15,222 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:35:15,222 INFO L276 IsEmpty]: Start isEmpty. Operand 5228 states and 17723 transitions. [2021-08-21 13:35:15,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:35:15,231 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:35:15,231 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:35:15,231 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable304 [2021-08-21 13:35:15,231 INFO L402 AbstractCegarLoop]: === Iteration 306 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:35:15,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:35:15,231 INFO L82 PathProgramCache]: Analyzing trace with hash -921219652, now seen corresponding path program 306 times [2021-08-21 13:35:15,231 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:35:15,231 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [994379868] [2021-08-21 13:35:15,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:35:15,231 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:35:15,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:35:15,542 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:35:15,542 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:35:15,542 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [994379868] [2021-08-21 13:35:15,542 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [994379868] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:35:15,542 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:35:15,542 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 13:35:15,542 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661893877] [2021-08-21 13:35:15,542 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 13:35:15,542 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:35:15,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 13:35:15,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-08-21 13:35:15,543 INFO L87 Difference]: Start difference. First operand 5228 states and 17723 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:35:17,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:35:17,085 INFO L93 Difference]: Finished difference Result 5722 states and 19189 transitions. [2021-08-21 13:35:17,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2021-08-21 13:35:17,085 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:35:17,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:35:17,097 INFO L225 Difference]: With dead ends: 5722 [2021-08-21 13:35:17,098 INFO L226 Difference]: Without dead ends: 5655 [2021-08-21 13:35:17,098 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 752 ImplicationChecksByTransitivity, 1022.6ms TimeCoverageRelationStatistics Valid=298, Invalid=2894, Unknown=0, NotChecked=0, Total=3192 [2021-08-21 13:35:17,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5655 states. [2021-08-21 13:35:17,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5655 to 5254. [2021-08-21 13:35:17,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5254 states, 5253 states have (on average 3.3902531886541025) internal successors, (17809), 5253 states have internal predecessors, (17809), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:35:17,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5254 states to 5254 states and 17809 transitions. [2021-08-21 13:35:17,198 INFO L78 Accepts]: Start accepts. Automaton has 5254 states and 17809 transitions. Word has length 39 [2021-08-21 13:35:17,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:35:17,198 INFO L470 AbstractCegarLoop]: Abstraction has 5254 states and 17809 transitions. [2021-08-21 13:35:17,198 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:35:17,198 INFO L276 IsEmpty]: Start isEmpty. Operand 5254 states and 17809 transitions. [2021-08-21 13:35:17,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:35:17,206 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:35:17,206 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:35:17,206 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable305 [2021-08-21 13:35:17,206 INFO L402 AbstractCegarLoop]: === Iteration 307 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:35:17,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:35:17,207 INFO L82 PathProgramCache]: Analyzing trace with hash -1051814500, now seen corresponding path program 307 times [2021-08-21 13:35:17,207 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:35:17,207 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1968765320] [2021-08-21 13:35:17,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:35:17,207 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:35:17,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:35:17,528 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:35:17,528 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:35:17,528 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1968765320] [2021-08-21 13:35:17,528 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1968765320] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:35:17,528 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:35:17,529 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 13:35:17,529 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475415336] [2021-08-21 13:35:17,529 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 13:35:17,529 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:35:17,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 13:35:17,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-08-21 13:35:17,529 INFO L87 Difference]: Start difference. First operand 5254 states and 17809 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:35:18,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:35:18,981 INFO L93 Difference]: Finished difference Result 5654 states and 18989 transitions. [2021-08-21 13:35:18,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-08-21 13:35:18,981 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:35:18,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:35:18,993 INFO L225 Difference]: With dead ends: 5654 [2021-08-21 13:35:18,994 INFO L226 Difference]: Without dead ends: 5591 [2021-08-21 13:35:18,994 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 638 ImplicationChecksByTransitivity, 993.7ms TimeCoverageRelationStatistics Valid=284, Invalid=2578, Unknown=0, NotChecked=0, Total=2862 [2021-08-21 13:35:19,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5591 states. [2021-08-21 13:35:19,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5591 to 5254. [2021-08-21 13:35:19,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5254 states, 5253 states have (on average 3.389491719017704) internal successors, (17805), 5253 states have internal predecessors, (17805), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:35:19,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5254 states to 5254 states and 17805 transitions. [2021-08-21 13:35:19,086 INFO L78 Accepts]: Start accepts. Automaton has 5254 states and 17805 transitions. Word has length 39 [2021-08-21 13:35:19,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:35:19,086 INFO L470 AbstractCegarLoop]: Abstraction has 5254 states and 17805 transitions. [2021-08-21 13:35:19,086 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:35:19,086 INFO L276 IsEmpty]: Start isEmpty. Operand 5254 states and 17805 transitions. [2021-08-21 13:35:19,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:35:19,094 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:35:19,094 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:35:19,094 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable306 [2021-08-21 13:35:19,095 INFO L402 AbstractCegarLoop]: === Iteration 308 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:35:19,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:35:19,095 INFO L82 PathProgramCache]: Analyzing trace with hash -1187493092, now seen corresponding path program 308 times [2021-08-21 13:35:19,095 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:35:19,095 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [250469336] [2021-08-21 13:35:19,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:35:19,095 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:35:19,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:35:19,394 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:35:19,394 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:35:19,394 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [250469336] [2021-08-21 13:35:19,395 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [250469336] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:35:19,395 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:35:19,395 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 13:35:19,395 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702558008] [2021-08-21 13:35:19,395 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 13:35:19,395 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:35:19,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 13:35:19,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-08-21 13:35:19,395 INFO L87 Difference]: Start difference. First operand 5254 states and 17805 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:35:21,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:35:21,637 INFO L93 Difference]: Finished difference Result 5867 states and 19517 transitions. [2021-08-21 13:35:21,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2021-08-21 13:35:21,638 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:35:21,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:35:21,650 INFO L225 Difference]: With dead ends: 5867 [2021-08-21 13:35:21,650 INFO L226 Difference]: Without dead ends: 5824 [2021-08-21 13:35:21,650 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1426 ImplicationChecksByTransitivity, 1492.8ms TimeCoverageRelationStatistics Valid=439, Invalid=4673, Unknown=0, NotChecked=0, Total=5112 [2021-08-21 13:35:21,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5824 states. [2021-08-21 13:35:21,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5824 to 5266. [2021-08-21 13:35:21,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5266 states, 5265 states have (on average 3.3886039886039887) internal successors, (17841), 5265 states have internal predecessors, (17841), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:35:21,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5266 states to 5266 states and 17841 transitions. [2021-08-21 13:35:21,735 INFO L78 Accepts]: Start accepts. Automaton has 5266 states and 17841 transitions. Word has length 39 [2021-08-21 13:35:21,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:35:21,736 INFO L470 AbstractCegarLoop]: Abstraction has 5266 states and 17841 transitions. [2021-08-21 13:35:21,736 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:35:21,736 INFO L276 IsEmpty]: Start isEmpty. Operand 5266 states and 17841 transitions. [2021-08-21 13:35:21,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:35:21,744 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:35:21,744 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:35:21,744 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable307 [2021-08-21 13:35:21,744 INFO L402 AbstractCegarLoop]: === Iteration 309 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:35:21,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:35:21,744 INFO L82 PathProgramCache]: Analyzing trace with hash 1326875902, now seen corresponding path program 309 times [2021-08-21 13:35:21,744 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:35:21,744 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [978250362] [2021-08-21 13:35:21,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:35:21,744 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:35:21,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:35:22,041 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:35:22,041 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:35:22,041 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [978250362] [2021-08-21 13:35:22,041 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [978250362] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:35:22,041 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:35:22,041 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 13:35:22,041 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993432475] [2021-08-21 13:35:22,042 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 13:35:22,042 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:35:22,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 13:35:22,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-08-21 13:35:22,042 INFO L87 Difference]: Start difference. First operand 5266 states and 17841 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:35:24,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:35:24,017 INFO L93 Difference]: Finished difference Result 5847 states and 19459 transitions. [2021-08-21 13:35:24,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2021-08-21 13:35:24,017 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:35:24,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:35:24,029 INFO L225 Difference]: With dead ends: 5847 [2021-08-21 13:35:24,029 INFO L226 Difference]: Without dead ends: 5795 [2021-08-21 13:35:24,030 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1372 ImplicationChecksByTransitivity, 1355.7ms TimeCoverageRelationStatistics Valid=427, Invalid=4543, Unknown=0, NotChecked=0, Total=4970 [2021-08-21 13:35:24,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5795 states. [2021-08-21 13:35:24,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5795 to 5258. [2021-08-21 13:35:24,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5258 states, 5257 states have (on average 3.389956248811109) internal successors, (17821), 5257 states have internal predecessors, (17821), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:35:24,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5258 states to 5258 states and 17821 transitions. [2021-08-21 13:35:24,116 INFO L78 Accepts]: Start accepts. Automaton has 5258 states and 17821 transitions. Word has length 39 [2021-08-21 13:35:24,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:35:24,116 INFO L470 AbstractCegarLoop]: Abstraction has 5258 states and 17821 transitions. [2021-08-21 13:35:24,116 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:35:24,116 INFO L276 IsEmpty]: Start isEmpty. Operand 5258 states and 17821 transitions. [2021-08-21 13:35:24,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:35:24,124 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:35:24,124 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:35:24,124 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable308 [2021-08-21 13:35:24,124 INFO L402 AbstractCegarLoop]: === Iteration 310 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:35:24,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:35:24,125 INFO L82 PathProgramCache]: Analyzing trace with hash -269009522, now seen corresponding path program 310 times [2021-08-21 13:35:24,125 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:35:24,125 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1158471806] [2021-08-21 13:35:24,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:35:24,125 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:35:24,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:35:24,426 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:35:24,426 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:35:24,426 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1158471806] [2021-08-21 13:35:24,427 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1158471806] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:35:24,427 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:35:24,427 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 13:35:24,427 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1168256607] [2021-08-21 13:35:24,427 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 13:35:24,427 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:35:24,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 13:35:24,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-08-21 13:35:24,427 INFO L87 Difference]: Start difference. First operand 5258 states and 17821 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:35:25,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:35:25,786 INFO L93 Difference]: Finished difference Result 5783 states and 19267 transitions. [2021-08-21 13:35:25,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-08-21 13:35:25,786 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:35:25,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:35:25,798 INFO L225 Difference]: With dead ends: 5783 [2021-08-21 13:35:25,798 INFO L226 Difference]: Without dead ends: 5728 [2021-08-21 13:35:25,799 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 744 ImplicationChecksByTransitivity, 874.0ms TimeCoverageRelationStatistics Valid=318, Invalid=2874, Unknown=0, NotChecked=0, Total=3192 [2021-08-21 13:35:25,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5728 states. [2021-08-21 13:35:25,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5728 to 5260. [2021-08-21 13:35:25,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5260 states, 5259 states have (on average 3.3892374976231223) internal successors, (17824), 5259 states have internal predecessors, (17824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:35:25,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5260 states to 5260 states and 17824 transitions. [2021-08-21 13:35:25,882 INFO L78 Accepts]: Start accepts. Automaton has 5260 states and 17824 transitions. Word has length 39 [2021-08-21 13:35:25,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:35:25,882 INFO L470 AbstractCegarLoop]: Abstraction has 5260 states and 17824 transitions. [2021-08-21 13:35:25,882 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:35:25,882 INFO L276 IsEmpty]: Start isEmpty. Operand 5260 states and 17824 transitions. [2021-08-21 13:35:25,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:35:25,889 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:35:25,889 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:35:25,889 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable309 [2021-08-21 13:35:25,889 INFO L402 AbstractCegarLoop]: === Iteration 311 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:35:25,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:35:25,889 INFO L82 PathProgramCache]: Analyzing trace with hash 903642700, now seen corresponding path program 311 times [2021-08-21 13:35:25,890 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:35:25,890 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [559299122] [2021-08-21 13:35:25,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:35:25,890 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:35:25,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:35:26,088 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:35:26,088 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:35:26,088 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [559299122] [2021-08-21 13:35:26,088 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [559299122] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:35:26,088 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:35:26,088 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 13:35:26,088 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917547474] [2021-08-21 13:35:26,088 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 13:35:26,088 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:35:26,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 13:35:26,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-08-21 13:35:26,089 INFO L87 Difference]: Start difference. First operand 5260 states and 17824 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:35:27,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:35:27,104 INFO L93 Difference]: Finished difference Result 5718 states and 19115 transitions. [2021-08-21 13:35:27,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-08-21 13:35:27,105 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:35:27,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:35:27,117 INFO L225 Difference]: With dead ends: 5718 [2021-08-21 13:35:27,117 INFO L226 Difference]: Without dead ends: 5672 [2021-08-21 13:35:27,118 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 633 ImplicationChecksByTransitivity, 669.6ms TimeCoverageRelationStatistics Valid=286, Invalid=2576, Unknown=0, NotChecked=0, Total=2862 [2021-08-21 13:35:27,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5672 states. [2021-08-21 13:35:27,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5672 to 5264. [2021-08-21 13:35:27,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5264 states, 5263 states have (on average 3.3881816454493636) internal successors, (17832), 5263 states have internal predecessors, (17832), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:35:27,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5264 states to 5264 states and 17832 transitions. [2021-08-21 13:35:27,260 INFO L78 Accepts]: Start accepts. Automaton has 5264 states and 17832 transitions. Word has length 39 [2021-08-21 13:35:27,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:35:27,260 INFO L470 AbstractCegarLoop]: Abstraction has 5264 states and 17832 transitions. [2021-08-21 13:35:27,260 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:35:27,260 INFO L276 IsEmpty]: Start isEmpty. Operand 5264 states and 17832 transitions. [2021-08-21 13:35:27,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:35:27,268 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:35:27,268 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:35:27,268 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable310 [2021-08-21 13:35:27,268 INFO L402 AbstractCegarLoop]: === Iteration 312 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:35:27,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:35:27,268 INFO L82 PathProgramCache]: Analyzing trace with hash 656176538, now seen corresponding path program 312 times [2021-08-21 13:35:27,268 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:35:27,268 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [661364212] [2021-08-21 13:35:27,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:35:27,268 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:35:27,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:35:27,471 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:35:27,471 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:35:27,471 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [661364212] [2021-08-21 13:35:27,471 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [661364212] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:35:27,471 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:35:27,471 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 13:35:27,471 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1112209917] [2021-08-21 13:35:27,472 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 13:35:27,472 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:35:27,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 13:35:27,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-08-21 13:35:27,472 INFO L87 Difference]: Start difference. First operand 5264 states and 17832 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:35:28,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:35:28,526 INFO L93 Difference]: Finished difference Result 5682 states and 19036 transitions. [2021-08-21 13:35:28,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-08-21 13:35:28,526 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:35:28,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:35:28,539 INFO L225 Difference]: With dead ends: 5682 [2021-08-21 13:35:28,539 INFO L226 Difference]: Without dead ends: 5633 [2021-08-21 13:35:28,540 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 667 ImplicationChecksByTransitivity, 709.4ms TimeCoverageRelationStatistics Valid=299, Invalid=2671, Unknown=0, NotChecked=0, Total=2970 [2021-08-21 13:35:28,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5633 states. [2021-08-21 13:35:28,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5633 to 5254. [2021-08-21 13:35:28,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5254 states, 5253 states have (on average 3.3910146582905005) internal successors, (17813), 5253 states have internal predecessors, (17813), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:35:28,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5254 states to 5254 states and 17813 transitions. [2021-08-21 13:35:28,627 INFO L78 Accepts]: Start accepts. Automaton has 5254 states and 17813 transitions. Word has length 39 [2021-08-21 13:35:28,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:35:28,627 INFO L470 AbstractCegarLoop]: Abstraction has 5254 states and 17813 transitions. [2021-08-21 13:35:28,627 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:35:28,627 INFO L276 IsEmpty]: Start isEmpty. Operand 5254 states and 17813 transitions. [2021-08-21 13:35:28,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:35:28,635 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:35:28,635 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:35:28,635 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable311 [2021-08-21 13:35:28,635 INFO L402 AbstractCegarLoop]: === Iteration 313 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:35:28,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:35:28,635 INFO L82 PathProgramCache]: Analyzing trace with hash 2114715834, now seen corresponding path program 313 times [2021-08-21 13:35:28,635 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:35:28,635 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1387028535] [2021-08-21 13:35:28,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:35:28,635 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:35:28,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:35:28,838 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:35:28,838 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:35:28,838 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1387028535] [2021-08-21 13:35:28,838 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1387028535] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:35:28,838 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:35:28,838 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 13:35:28,838 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123075795] [2021-08-21 13:35:28,838 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 13:35:28,838 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:35:28,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 13:35:28,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-08-21 13:35:28,839 INFO L87 Difference]: Start difference. First operand 5254 states and 17813 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:35:29,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:35:29,966 INFO L93 Difference]: Finished difference Result 5671 states and 19049 transitions. [2021-08-21 13:35:29,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-08-21 13:35:29,966 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:35:29,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:35:29,977 INFO L225 Difference]: With dead ends: 5671 [2021-08-21 13:35:29,977 INFO L226 Difference]: Without dead ends: 5604 [2021-08-21 13:35:29,977 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 676 ImplicationChecksByTransitivity, 712.3ms TimeCoverageRelationStatistics Valid=272, Invalid=2698, Unknown=0, NotChecked=0, Total=2970 [2021-08-21 13:35:29,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5604 states. [2021-08-21 13:35:30,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5604 to 5272. [2021-08-21 13:35:30,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5272 states, 5271 states have (on average 3.3874027698728892) internal successors, (17855), 5271 states have internal predecessors, (17855), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:35:30,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5272 states to 5272 states and 17855 transitions. [2021-08-21 13:35:30,052 INFO L78 Accepts]: Start accepts. Automaton has 5272 states and 17855 transitions. Word has length 39 [2021-08-21 13:35:30,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:35:30,052 INFO L470 AbstractCegarLoop]: Abstraction has 5272 states and 17855 transitions. [2021-08-21 13:35:30,052 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:35:30,052 INFO L276 IsEmpty]: Start isEmpty. Operand 5272 states and 17855 transitions. [2021-08-21 13:35:30,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:35:30,059 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:35:30,059 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:35:30,060 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable312 [2021-08-21 13:35:30,060 INFO L402 AbstractCegarLoop]: === Iteration 314 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:35:30,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:35:30,060 INFO L82 PathProgramCache]: Analyzing trace with hash -1822181254, now seen corresponding path program 314 times [2021-08-21 13:35:30,060 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:35:30,060 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [26655394] [2021-08-21 13:35:30,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:35:30,060 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:35:30,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:35:30,266 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:35:30,267 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:35:30,267 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [26655394] [2021-08-21 13:35:30,267 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [26655394] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:35:30,267 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:35:30,267 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 13:35:30,267 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1267436120] [2021-08-21 13:35:30,267 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 13:35:30,267 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:35:30,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 13:35:30,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-08-21 13:35:30,267 INFO L87 Difference]: Start difference. First operand 5272 states and 17855 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:35:31,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:35:31,646 INFO L93 Difference]: Finished difference Result 5650 states and 18952 transitions. [2021-08-21 13:35:31,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-08-21 13:35:31,646 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:35:31,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:35:31,660 INFO L225 Difference]: With dead ends: 5650 [2021-08-21 13:35:31,660 INFO L226 Difference]: Without dead ends: 5607 [2021-08-21 13:35:31,660 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 539 ImplicationChecksByTransitivity, 825.3ms TimeCoverageRelationStatistics Valid=245, Invalid=2305, Unknown=0, NotChecked=0, Total=2550 [2021-08-21 13:35:31,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5607 states. [2021-08-21 13:35:31,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5607 to 5290. [2021-08-21 13:35:31,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5290 states, 5289 states have (on average 3.383248251087162) internal successors, (17894), 5289 states have internal predecessors, (17894), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:35:31,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5290 states to 5290 states and 17894 transitions. [2021-08-21 13:35:31,758 INFO L78 Accepts]: Start accepts. Automaton has 5290 states and 17894 transitions. Word has length 39 [2021-08-21 13:35:31,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:35:31,758 INFO L470 AbstractCegarLoop]: Abstraction has 5290 states and 17894 transitions. [2021-08-21 13:35:31,758 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:35:31,758 INFO L276 IsEmpty]: Start isEmpty. Operand 5290 states and 17894 transitions. [2021-08-21 13:35:31,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:35:31,767 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:35:31,767 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:35:31,767 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable313 [2021-08-21 13:35:31,767 INFO L402 AbstractCegarLoop]: === Iteration 315 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:35:31,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:35:31,767 INFO L82 PathProgramCache]: Analyzing trace with hash -992650084, now seen corresponding path program 315 times [2021-08-21 13:35:31,767 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:35:31,767 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1502059521] [2021-08-21 13:35:31,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:35:31,767 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:35:31,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:35:32,071 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:35:32,072 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:35:32,072 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1502059521] [2021-08-21 13:35:32,072 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1502059521] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:35:32,072 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:35:32,072 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 13:35:32,072 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562173663] [2021-08-21 13:35:32,072 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 13:35:32,072 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:35:32,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 13:35:32,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-08-21 13:35:32,073 INFO L87 Difference]: Start difference. First operand 5290 states and 17894 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:35:33,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:35:33,521 INFO L93 Difference]: Finished difference Result 5599 states and 18829 transitions. [2021-08-21 13:35:33,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-08-21 13:35:33,522 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:35:33,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:35:33,534 INFO L225 Difference]: With dead ends: 5599 [2021-08-21 13:35:33,534 INFO L226 Difference]: Without dead ends: 5536 [2021-08-21 13:35:33,535 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 538 ImplicationChecksByTransitivity, 934.4ms TimeCoverageRelationStatistics Valid=244, Invalid=2306, Unknown=0, NotChecked=0, Total=2550 [2021-08-21 13:35:33,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5536 states. [2021-08-21 13:35:33,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5536 to 5272. [2021-08-21 13:35:33,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5272 states, 5271 states have (on average 3.386264465945741) internal successors, (17849), 5271 states have internal predecessors, (17849), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:35:33,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5272 states to 5272 states and 17849 transitions. [2021-08-21 13:35:33,625 INFO L78 Accepts]: Start accepts. Automaton has 5272 states and 17849 transitions. Word has length 39 [2021-08-21 13:35:33,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:35:33,625 INFO L470 AbstractCegarLoop]: Abstraction has 5272 states and 17849 transitions. [2021-08-21 13:35:33,625 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:35:33,625 INFO L276 IsEmpty]: Start isEmpty. Operand 5272 states and 17849 transitions. [2021-08-21 13:35:33,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:35:33,634 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:35:33,634 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:35:33,634 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable314 [2021-08-21 13:35:33,634 INFO L402 AbstractCegarLoop]: === Iteration 316 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:35:33,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:35:33,634 INFO L82 PathProgramCache]: Analyzing trace with hash -193876200, now seen corresponding path program 316 times [2021-08-21 13:35:33,634 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:35:33,634 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1250334444] [2021-08-21 13:35:33,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:35:33,634 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:35:33,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:35:33,933 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:35:33,933 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:35:33,933 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1250334444] [2021-08-21 13:35:33,933 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1250334444] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:35:33,933 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:35:33,933 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 13:35:33,933 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300536906] [2021-08-21 13:35:33,934 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 13:35:33,934 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:35:33,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 13:35:33,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-08-21 13:35:33,934 INFO L87 Difference]: Start difference. First operand 5272 states and 17849 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:35:35,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:35:35,904 INFO L93 Difference]: Finished difference Result 5767 states and 19268 transitions. [2021-08-21 13:35:35,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2021-08-21 13:35:35,904 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:35:35,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:35:35,916 INFO L225 Difference]: With dead ends: 5767 [2021-08-21 13:35:35,916 INFO L226 Difference]: Without dead ends: 5724 [2021-08-21 13:35:35,916 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1127 ImplicationChecksByTransitivity, 1300.7ms TimeCoverageRelationStatistics Valid=368, Invalid=3922, Unknown=0, NotChecked=0, Total=4290 [2021-08-21 13:35:35,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5724 states. [2021-08-21 13:35:35,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5724 to 5281. [2021-08-21 13:35:35,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5281 states, 5280 states have (on average 3.385037878787879) internal successors, (17873), 5280 states have internal predecessors, (17873), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:35:35,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5281 states to 5281 states and 17873 transitions. [2021-08-21 13:35:35,999 INFO L78 Accepts]: Start accepts. Automaton has 5281 states and 17873 transitions. Word has length 39 [2021-08-21 13:35:35,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:35:35,999 INFO L470 AbstractCegarLoop]: Abstraction has 5281 states and 17873 transitions. [2021-08-21 13:35:35,999 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:35:35,999 INFO L276 IsEmpty]: Start isEmpty. Operand 5281 states and 17873 transitions. [2021-08-21 13:35:36,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:35:36,007 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:35:36,007 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:35:36,007 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable315 [2021-08-21 13:35:36,007 INFO L402 AbstractCegarLoop]: === Iteration 317 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:35:36,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:35:36,007 INFO L82 PathProgramCache]: Analyzing trace with hash -1974474502, now seen corresponding path program 317 times [2021-08-21 13:35:36,008 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:35:36,008 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1488083731] [2021-08-21 13:35:36,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:35:36,008 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:35:36,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:35:36,306 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:35:36,306 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:35:36,306 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1488083731] [2021-08-21 13:35:36,306 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1488083731] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:35:36,306 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:35:36,306 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 13:35:36,306 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555824687] [2021-08-21 13:35:36,306 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 13:35:36,306 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:35:36,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 13:35:36,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-08-21 13:35:36,307 INFO L87 Difference]: Start difference. First operand 5281 states and 17873 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:35:38,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:35:38,202 INFO L93 Difference]: Finished difference Result 5762 states and 19249 transitions. [2021-08-21 13:35:38,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2021-08-21 13:35:38,202 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:35:38,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:35:38,214 INFO L225 Difference]: With dead ends: 5762 [2021-08-21 13:35:38,214 INFO L226 Difference]: Without dead ends: 5710 [2021-08-21 13:35:38,215 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1081 ImplicationChecksByTransitivity, 1231.3ms TimeCoverageRelationStatistics Valid=353, Invalid=3807, Unknown=0, NotChecked=0, Total=4160 [2021-08-21 13:35:38,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5710 states. [2021-08-21 13:35:38,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5710 to 5275. [2021-08-21 13:35:38,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5275 states, 5274 states have (on average 3.385855138414865) internal successors, (17857), 5274 states have internal predecessors, (17857), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:35:38,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5275 states to 5275 states and 17857 transitions. [2021-08-21 13:35:38,311 INFO L78 Accepts]: Start accepts. Automaton has 5275 states and 17857 transitions. Word has length 39 [2021-08-21 13:35:38,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:35:38,312 INFO L470 AbstractCegarLoop]: Abstraction has 5275 states and 17857 transitions. [2021-08-21 13:35:38,312 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:35:38,312 INFO L276 IsEmpty]: Start isEmpty. Operand 5275 states and 17857 transitions. [2021-08-21 13:35:38,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:35:38,320 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:35:38,320 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:35:38,320 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable316 [2021-08-21 13:35:38,320 INFO L402 AbstractCegarLoop]: === Iteration 318 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:35:38,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:35:38,320 INFO L82 PathProgramCache]: Analyzing trace with hash -1731295430, now seen corresponding path program 318 times [2021-08-21 13:35:38,320 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:35:38,320 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1178122325] [2021-08-21 13:35:38,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:35:38,321 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:35:38,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:35:38,621 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:35:38,621 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:35:38,621 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1178122325] [2021-08-21 13:35:38,621 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1178122325] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:35:38,622 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:35:38,622 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 13:35:38,622 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [178846152] [2021-08-21 13:35:38,622 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 13:35:38,622 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:35:38,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 13:35:38,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-08-21 13:35:38,622 INFO L87 Difference]: Start difference. First operand 5275 states and 17857 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:35:40,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:35:40,004 INFO L93 Difference]: Finished difference Result 5746 states and 19166 transitions. [2021-08-21 13:35:40,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-08-21 13:35:40,005 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:35:40,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:35:40,018 INFO L225 Difference]: With dead ends: 5746 [2021-08-21 13:35:40,018 INFO L226 Difference]: Without dead ends: 5703 [2021-08-21 13:35:40,018 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 569 ImplicationChecksByTransitivity, 855.2ms TimeCoverageRelationStatistics Valid=255, Invalid=2397, Unknown=0, NotChecked=0, Total=2652 [2021-08-21 13:35:40,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5703 states. [2021-08-21 13:35:40,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5703 to 5284. [2021-08-21 13:35:40,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5284 states, 5283 states have (on average 3.384062085936021) internal successors, (17878), 5283 states have internal predecessors, (17878), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:35:40,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5284 states to 5284 states and 17878 transitions. [2021-08-21 13:35:40,104 INFO L78 Accepts]: Start accepts. Automaton has 5284 states and 17878 transitions. Word has length 39 [2021-08-21 13:35:40,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:35:40,104 INFO L470 AbstractCegarLoop]: Abstraction has 5284 states and 17878 transitions. [2021-08-21 13:35:40,104 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:35:40,104 INFO L276 IsEmpty]: Start isEmpty. Operand 5284 states and 17878 transitions. [2021-08-21 13:35:40,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:35:40,111 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:35:40,111 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:35:40,111 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable317 [2021-08-21 13:35:40,111 INFO L402 AbstractCegarLoop]: === Iteration 319 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:35:40,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:35:40,112 INFO L82 PathProgramCache]: Analyzing trace with hash 18811706, now seen corresponding path program 319 times [2021-08-21 13:35:40,112 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:35:40,112 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [278958582] [2021-08-21 13:35:40,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:35:40,112 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:35:40,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:35:40,312 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:35:40,312 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:35:40,312 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [278958582] [2021-08-21 13:35:40,312 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [278958582] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:35:40,313 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:35:40,313 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 13:35:40,313 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2145771443] [2021-08-21 13:35:40,313 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 13:35:40,313 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:35:40,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 13:35:40,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-08-21 13:35:40,313 INFO L87 Difference]: Start difference. First operand 5284 states and 17878 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:35:41,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:35:41,302 INFO L93 Difference]: Finished difference Result 5709 states and 19080 transitions. [2021-08-21 13:35:41,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-08-21 13:35:41,302 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:35:41,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:35:41,314 INFO L225 Difference]: With dead ends: 5709 [2021-08-21 13:35:41,314 INFO L226 Difference]: Without dead ends: 5658 [2021-08-21 13:35:41,315 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 605 ImplicationChecksByTransitivity, 621.3ms TimeCoverageRelationStatistics Valid=262, Invalid=2494, Unknown=0, NotChecked=0, Total=2756 [2021-08-21 13:35:41,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5658 states. [2021-08-21 13:35:41,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5658 to 5278. [2021-08-21 13:35:41,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5278 states, 5277 states have (on average 3.3848777714610576) internal successors, (17862), 5277 states have internal predecessors, (17862), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:35:41,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5278 states to 5278 states and 17862 transitions. [2021-08-21 13:35:41,397 INFO L78 Accepts]: Start accepts. Automaton has 5278 states and 17862 transitions. Word has length 39 [2021-08-21 13:35:41,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:35:41,397 INFO L470 AbstractCegarLoop]: Abstraction has 5278 states and 17862 transitions. [2021-08-21 13:35:41,398 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:35:41,398 INFO L276 IsEmpty]: Start isEmpty. Operand 5278 states and 17862 transitions. [2021-08-21 13:35:41,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:35:41,405 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:35:41,405 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:35:41,405 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable318 [2021-08-21 13:35:41,406 INFO L402 AbstractCegarLoop]: === Iteration 320 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:35:41,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:35:41,406 INFO L82 PathProgramCache]: Analyzing trace with hash 636030108, now seen corresponding path program 320 times [2021-08-21 13:35:41,406 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:35:41,406 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [291275233] [2021-08-21 13:35:41,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:35:41,406 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:35:41,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:35:41,652 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:35:41,652 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:35:41,652 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [291275233] [2021-08-21 13:35:41,652 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [291275233] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:35:41,652 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:35:41,652 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 13:35:41,652 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1972236078] [2021-08-21 13:35:41,652 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 13:35:41,652 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:35:41,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 13:35:41,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-08-21 13:35:41,653 INFO L87 Difference]: Start difference. First operand 5278 states and 17862 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:35:42,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:35:42,571 INFO L93 Difference]: Finished difference Result 5681 states and 19009 transitions. [2021-08-21 13:35:42,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-08-21 13:35:42,572 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:35:42,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:35:42,585 INFO L225 Difference]: With dead ends: 5681 [2021-08-21 13:35:42,585 INFO L226 Difference]: Without dead ends: 5635 [2021-08-21 13:35:42,585 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 505 ImplicationChecksByTransitivity, 556.4ms TimeCoverageRelationStatistics Valid=234, Invalid=2216, Unknown=0, NotChecked=0, Total=2450 [2021-08-21 13:35:42,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5635 states. [2021-08-21 13:35:42,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5635 to 5285. [2021-08-21 13:35:42,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5285 states, 5284 states have (on average 3.383232399697199) internal successors, (17877), 5284 states have internal predecessors, (17877), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:35:42,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5285 states to 5285 states and 17877 transitions. [2021-08-21 13:35:42,667 INFO L78 Accepts]: Start accepts. Automaton has 5285 states and 17877 transitions. Word has length 39 [2021-08-21 13:35:42,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:35:42,667 INFO L470 AbstractCegarLoop]: Abstraction has 5285 states and 17877 transitions. [2021-08-21 13:35:42,667 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:35:42,667 INFO L276 IsEmpty]: Start isEmpty. Operand 5285 states and 17877 transitions. [2021-08-21 13:35:42,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:35:42,675 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:35:42,675 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:35:42,675 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable319 [2021-08-21 13:35:42,675 INFO L402 AbstractCegarLoop]: === Iteration 321 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:35:42,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:35:42,675 INFO L82 PathProgramCache]: Analyzing trace with hash -799037382, now seen corresponding path program 321 times [2021-08-21 13:35:42,675 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:35:42,675 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1633450187] [2021-08-21 13:35:42,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:35:42,675 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:35:42,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:35:42,928 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:35:42,928 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:35:42,928 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1633450187] [2021-08-21 13:35:42,928 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1633450187] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:35:42,928 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:35:42,928 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 13:35:42,928 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502528528] [2021-08-21 13:35:42,928 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 13:35:42,928 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:35:42,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 13:35:42,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-08-21 13:35:42,929 INFO L87 Difference]: Start difference. First operand 5285 states and 17877 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:35:44,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:35:44,041 INFO L93 Difference]: Finished difference Result 5641 states and 18915 transitions. [2021-08-21 13:35:44,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-08-21 13:35:44,042 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:35:44,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:35:44,054 INFO L225 Difference]: With dead ends: 5641 [2021-08-21 13:35:44,054 INFO L226 Difference]: Without dead ends: 5580 [2021-08-21 13:35:44,054 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 569 ImplicationChecksByTransitivity, 650.5ms TimeCoverageRelationStatistics Valid=253, Invalid=2399, Unknown=0, NotChecked=0, Total=2652 [2021-08-21 13:35:44,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5580 states. [2021-08-21 13:35:44,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5580 to 5269. [2021-08-21 13:35:44,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5269 states, 5268 states have (on average 3.3874335611237663) internal successors, (17845), 5268 states have internal predecessors, (17845), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:35:44,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5269 states to 5269 states and 17845 transitions. [2021-08-21 13:35:44,136 INFO L78 Accepts]: Start accepts. Automaton has 5269 states and 17845 transitions. Word has length 39 [2021-08-21 13:35:44,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:35:44,136 INFO L470 AbstractCegarLoop]: Abstraction has 5269 states and 17845 transitions. [2021-08-21 13:35:44,136 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:35:44,136 INFO L276 IsEmpty]: Start isEmpty. Operand 5269 states and 17845 transitions. [2021-08-21 13:35:44,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:35:44,145 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:35:44,145 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:35:44,145 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable320 [2021-08-21 13:35:44,145 INFO L402 AbstractCegarLoop]: === Iteration 322 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:35:44,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:35:44,145 INFO L82 PathProgramCache]: Analyzing trace with hash 1208759772, now seen corresponding path program 322 times [2021-08-21 13:35:44,145 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:35:44,145 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [679853364] [2021-08-21 13:35:44,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:35:44,145 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:35:44,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:35:44,395 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:35:44,396 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:35:44,396 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [679853364] [2021-08-21 13:35:44,396 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [679853364] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:35:44,396 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:35:44,396 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 13:35:44,396 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987249228] [2021-08-21 13:35:44,396 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 13:35:44,396 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:35:44,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 13:35:44,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-08-21 13:35:44,396 INFO L87 Difference]: Start difference. First operand 5269 states and 17845 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:35:45,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:35:45,712 INFO L93 Difference]: Finished difference Result 5636 states and 18933 transitions. [2021-08-21 13:35:45,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-08-21 13:35:45,712 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:35:45,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:35:45,724 INFO L225 Difference]: With dead ends: 5636 [2021-08-21 13:35:45,724 INFO L226 Difference]: Without dead ends: 5573 [2021-08-21 13:35:45,725 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 573 ImplicationChecksByTransitivity, 825.5ms TimeCoverageRelationStatistics Valid=259, Invalid=2393, Unknown=0, NotChecked=0, Total=2652 [2021-08-21 13:35:45,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5573 states. [2021-08-21 13:35:45,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5573 to 5273. [2021-08-21 13:35:45,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5273 states, 5272 states have (on average 3.3867602427921093) internal successors, (17855), 5272 states have internal predecessors, (17855), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:35:45,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5273 states to 5273 states and 17855 transitions. [2021-08-21 13:35:45,804 INFO L78 Accepts]: Start accepts. Automaton has 5273 states and 17855 transitions. Word has length 39 [2021-08-21 13:35:45,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:35:45,804 INFO L470 AbstractCegarLoop]: Abstraction has 5273 states and 17855 transitions. [2021-08-21 13:35:45,804 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:35:45,804 INFO L276 IsEmpty]: Start isEmpty. Operand 5273 states and 17855 transitions. [2021-08-21 13:35:45,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:35:45,811 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:35:45,812 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:35:45,812 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable321 [2021-08-21 13:35:45,812 INFO L402 AbstractCegarLoop]: === Iteration 323 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:35:45,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:35:45,812 INFO L82 PathProgramCache]: Analyzing trace with hash 963267674, now seen corresponding path program 323 times [2021-08-21 13:35:45,812 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:35:45,812 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1974916326] [2021-08-21 13:35:45,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:35:45,812 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:35:45,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:35:46,107 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:35:46,107 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:35:46,107 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1974916326] [2021-08-21 13:35:46,108 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1974916326] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:35:46,108 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:35:46,108 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 13:35:46,108 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818191494] [2021-08-21 13:35:46,108 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 13:35:46,108 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:35:46,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 13:35:46,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-08-21 13:35:46,108 INFO L87 Difference]: Start difference. First operand 5273 states and 17855 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:35:47,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:35:47,499 INFO L93 Difference]: Finished difference Result 5675 states and 19022 transitions. [2021-08-21 13:35:47,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-08-21 13:35:47,500 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:35:47,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:35:47,511 INFO L225 Difference]: With dead ends: 5675 [2021-08-21 13:35:47,512 INFO L226 Difference]: Without dead ends: 5632 [2021-08-21 13:35:47,512 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 541 ImplicationChecksByTransitivity, 900.2ms TimeCoverageRelationStatistics Valid=246, Invalid=2304, Unknown=0, NotChecked=0, Total=2550 [2021-08-21 13:35:47,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5632 states. [2021-08-21 13:35:47,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5632 to 5291. [2021-08-21 13:35:47,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5291 states, 5290 states have (on average 3.382608695652174) internal successors, (17894), 5290 states have internal predecessors, (17894), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:35:47,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5291 states to 5291 states and 17894 transitions. [2021-08-21 13:35:47,593 INFO L78 Accepts]: Start accepts. Automaton has 5291 states and 17894 transitions. Word has length 39 [2021-08-21 13:35:47,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:35:47,593 INFO L470 AbstractCegarLoop]: Abstraction has 5291 states and 17894 transitions. [2021-08-21 13:35:47,593 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:35:47,593 INFO L276 IsEmpty]: Start isEmpty. Operand 5291 states and 17894 transitions. [2021-08-21 13:35:47,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:35:47,601 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:35:47,601 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:35:47,601 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable322 [2021-08-21 13:35:47,601 INFO L402 AbstractCegarLoop]: === Iteration 324 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:35:47,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:35:47,602 INFO L82 PathProgramCache]: Analyzing trace with hash 1792798844, now seen corresponding path program 324 times [2021-08-21 13:35:47,602 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:35:47,602 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1097333133] [2021-08-21 13:35:47,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:35:47,602 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:35:47,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:35:47,901 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:35:47,901 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:35:47,901 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1097333133] [2021-08-21 13:35:47,901 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1097333133] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:35:47,901 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:35:47,901 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 13:35:47,901 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166410863] [2021-08-21 13:35:47,901 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 13:35:47,901 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:35:47,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 13:35:47,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-08-21 13:35:47,902 INFO L87 Difference]: Start difference. First operand 5291 states and 17894 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:35:49,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:35:49,091 INFO L93 Difference]: Finished difference Result 5606 states and 18848 transitions. [2021-08-21 13:35:49,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-08-21 13:35:49,092 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:35:49,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:35:49,103 INFO L225 Difference]: With dead ends: 5606 [2021-08-21 13:35:49,103 INFO L226 Difference]: Without dead ends: 5543 [2021-08-21 13:35:49,104 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 507 ImplicationChecksByTransitivity, 747.2ms TimeCoverageRelationStatistics Valid=232, Invalid=2218, Unknown=0, NotChecked=0, Total=2450 [2021-08-21 13:35:49,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5543 states. [2021-08-21 13:35:49,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5543 to 5273. [2021-08-21 13:35:49,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5273 states, 5272 states have (on average 3.386001517450683) internal successors, (17851), 5272 states have internal predecessors, (17851), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:35:49,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5273 states to 5273 states and 17851 transitions. [2021-08-21 13:35:49,182 INFO L78 Accepts]: Start accepts. Automaton has 5273 states and 17851 transitions. Word has length 39 [2021-08-21 13:35:49,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:35:49,183 INFO L470 AbstractCegarLoop]: Abstraction has 5273 states and 17851 transitions. [2021-08-21 13:35:49,183 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:35:49,183 INFO L276 IsEmpty]: Start isEmpty. Operand 5273 states and 17851 transitions. [2021-08-21 13:35:49,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:35:49,190 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:35:49,190 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:35:49,190 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable323 [2021-08-21 13:35:49,190 INFO L402 AbstractCegarLoop]: === Iteration 325 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:35:49,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:35:49,190 INFO L82 PathProgramCache]: Analyzing trace with hash -220436964, now seen corresponding path program 325 times [2021-08-21 13:35:49,190 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:35:49,190 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1234742166] [2021-08-21 13:35:49,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:35:49,191 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:35:49,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:35:49,511 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:35:49,512 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:35:49,512 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1234742166] [2021-08-21 13:35:49,512 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1234742166] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:35:49,512 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:35:49,512 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 13:35:49,512 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105018030] [2021-08-21 13:35:49,512 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 13:35:49,512 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:35:49,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 13:35:49,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-08-21 13:35:49,513 INFO L87 Difference]: Start difference. First operand 5273 states and 17851 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:35:51,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:35:51,047 INFO L93 Difference]: Finished difference Result 5675 states and 19024 transitions. [2021-08-21 13:35:51,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-08-21 13:35:51,048 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:35:51,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:35:51,061 INFO L225 Difference]: With dead ends: 5675 [2021-08-21 13:35:51,061 INFO L226 Difference]: Without dead ends: 5620 [2021-08-21 13:35:51,061 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 681 ImplicationChecksByTransitivity, 969.7ms TimeCoverageRelationStatistics Valid=285, Invalid=2685, Unknown=0, NotChecked=0, Total=2970 [2021-08-21 13:35:51,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5620 states. [2021-08-21 13:35:51,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5620 to 5275. [2021-08-21 13:35:51,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5275 states, 5274 states have (on average 3.385665529010239) internal successors, (17856), 5274 states have internal predecessors, (17856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:35:51,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5275 states to 5275 states and 17856 transitions. [2021-08-21 13:35:51,153 INFO L78 Accepts]: Start accepts. Automaton has 5275 states and 17856 transitions. Word has length 39 [2021-08-21 13:35:51,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:35:51,153 INFO L470 AbstractCegarLoop]: Abstraction has 5275 states and 17856 transitions. [2021-08-21 13:35:51,154 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:35:51,154 INFO L276 IsEmpty]: Start isEmpty. Operand 5275 states and 17856 transitions. [2021-08-21 13:35:51,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:35:51,161 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:35:51,162 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:35:51,162 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable324 [2021-08-21 13:35:51,162 INFO L402 AbstractCegarLoop]: === Iteration 326 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:35:51,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:35:51,162 INFO L82 PathProgramCache]: Analyzing trace with hash 1116621050, now seen corresponding path program 326 times [2021-08-21 13:35:51,162 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:35:51,162 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1694050799] [2021-08-21 13:35:51,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:35:51,162 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:35:51,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:35:51,458 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:35:51,459 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:35:51,459 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1694050799] [2021-08-21 13:35:51,459 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1694050799] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:35:51,459 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:35:51,459 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 13:35:51,459 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1443320319] [2021-08-21 13:35:51,459 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 13:35:51,459 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:35:51,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 13:35:51,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-08-21 13:35:51,460 INFO L87 Difference]: Start difference. First operand 5275 states and 17856 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:35:52,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:35:52,754 INFO L93 Difference]: Finished difference Result 5651 states and 18954 transitions. [2021-08-21 13:35:52,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-08-21 13:35:52,754 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:35:52,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:35:52,767 INFO L225 Difference]: With dead ends: 5651 [2021-08-21 13:35:52,767 INFO L226 Difference]: Without dead ends: 5608 [2021-08-21 13:35:52,767 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 610 ImplicationChecksByTransitivity, 833.8ms TimeCoverageRelationStatistics Valid=261, Invalid=2495, Unknown=0, NotChecked=0, Total=2756 [2021-08-21 13:35:52,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5608 states. [2021-08-21 13:35:52,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5608 to 5281. [2021-08-21 13:35:52,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5281 states, 5280 states have (on average 3.384280303030303) internal successors, (17869), 5280 states have internal predecessors, (17869), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:35:52,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5281 states to 5281 states and 17869 transitions. [2021-08-21 13:35:52,857 INFO L78 Accepts]: Start accepts. Automaton has 5281 states and 17869 transitions. Word has length 39 [2021-08-21 13:35:52,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:35:52,857 INFO L470 AbstractCegarLoop]: Abstraction has 5281 states and 17869 transitions. [2021-08-21 13:35:52,857 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:35:52,857 INFO L276 IsEmpty]: Start isEmpty. Operand 5281 states and 17869 transitions. [2021-08-21 13:35:52,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:35:52,866 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:35:52,866 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:35:52,866 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable325 [2021-08-21 13:35:52,866 INFO L402 AbstractCegarLoop]: === Iteration 327 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:35:52,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:35:52,866 INFO L82 PathProgramCache]: Analyzing trace with hash 845201500, now seen corresponding path program 327 times [2021-08-21 13:35:52,866 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:35:52,866 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [274840113] [2021-08-21 13:35:52,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:35:52,867 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:35:52,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:35:53,214 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:35:53,214 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:35:53,214 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [274840113] [2021-08-21 13:35:53,214 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [274840113] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:35:53,214 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:35:53,215 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 13:35:53,215 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421886285] [2021-08-21 13:35:53,215 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 13:35:53,215 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:35:53,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 13:35:53,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-08-21 13:35:53,215 INFO L87 Difference]: Start difference. First operand 5281 states and 17869 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:35:54,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:35:54,494 INFO L93 Difference]: Finished difference Result 5600 states and 18831 transitions. [2021-08-21 13:35:54,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-08-21 13:35:54,494 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:35:54,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:35:54,507 INFO L225 Difference]: With dead ends: 5600 [2021-08-21 13:35:54,508 INFO L226 Difference]: Without dead ends: 5539 [2021-08-21 13:35:54,508 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 575 ImplicationChecksByTransitivity, 858.3ms TimeCoverageRelationStatistics Valid=247, Invalid=2405, Unknown=0, NotChecked=0, Total=2652 [2021-08-21 13:35:54,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5539 states. [2021-08-21 13:35:54,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5539 to 5269. [2021-08-21 13:35:54,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5269 states, 5268 states have (on average 3.3870539104024298) internal successors, (17843), 5268 states have internal predecessors, (17843), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:35:54,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5269 states to 5269 states and 17843 transitions. [2021-08-21 13:35:54,596 INFO L78 Accepts]: Start accepts. Automaton has 5269 states and 17843 transitions. Word has length 39 [2021-08-21 13:35:54,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:35:54,596 INFO L470 AbstractCegarLoop]: Abstraction has 5269 states and 17843 transitions. [2021-08-21 13:35:54,597 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:35:54,597 INFO L276 IsEmpty]: Start isEmpty. Operand 5269 states and 17843 transitions. [2021-08-21 13:35:54,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:35:54,605 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:35:54,605 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:35:54,605 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable326 [2021-08-21 13:35:54,605 INFO L402 AbstractCegarLoop]: === Iteration 328 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:35:54,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:35:54,605 INFO L82 PathProgramCache]: Analyzing trace with hash 747046286, now seen corresponding path program 328 times [2021-08-21 13:35:54,605 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:35:54,605 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1939078786] [2021-08-21 13:35:54,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:35:54,606 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:35:54,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:35:54,828 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:35:54,828 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:35:54,828 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1939078786] [2021-08-21 13:35:54,828 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1939078786] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:35:54,828 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:35:54,828 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 13:35:54,828 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245679166] [2021-08-21 13:35:54,828 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 13:35:54,828 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:35:54,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 13:35:54,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-08-21 13:35:54,829 INFO L87 Difference]: Start difference. First operand 5269 states and 17843 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:35:56,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:35:56,263 INFO L93 Difference]: Finished difference Result 5834 states and 19388 transitions. [2021-08-21 13:35:56,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-08-21 13:35:56,263 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:35:56,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:35:56,275 INFO L225 Difference]: With dead ends: 5834 [2021-08-21 13:35:56,275 INFO L226 Difference]: Without dead ends: 5779 [2021-08-21 13:35:56,276 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 896 ImplicationChecksByTransitivity, 922.2ms TimeCoverageRelationStatistics Valid=353, Invalid=3307, Unknown=0, NotChecked=0, Total=3660 [2021-08-21 13:35:56,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5779 states. [2021-08-21 13:35:56,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5779 to 5274. [2021-08-21 13:35:56,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5274 states, 5273 states have (on average 3.386117959415892) internal successors, (17855), 5273 states have internal predecessors, (17855), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:35:56,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5274 states to 5274 states and 17855 transitions. [2021-08-21 13:35:56,372 INFO L78 Accepts]: Start accepts. Automaton has 5274 states and 17855 transitions. Word has length 39 [2021-08-21 13:35:56,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:35:56,372 INFO L470 AbstractCegarLoop]: Abstraction has 5274 states and 17855 transitions. [2021-08-21 13:35:56,372 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:35:56,372 INFO L276 IsEmpty]: Start isEmpty. Operand 5274 states and 17855 transitions. [2021-08-21 13:35:56,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:35:56,381 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:35:56,381 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:35:56,382 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable327 [2021-08-21 13:35:56,382 INFO L402 AbstractCegarLoop]: === Iteration 329 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:35:56,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:35:56,382 INFO L82 PathProgramCache]: Analyzing trace with hash 1919698508, now seen corresponding path program 329 times [2021-08-21 13:35:56,382 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:35:56,382 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1791794416] [2021-08-21 13:35:56,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:35:56,382 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:35:56,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:35:56,689 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:35:56,689 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:35:56,689 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1791794416] [2021-08-21 13:35:56,689 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1791794416] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:35:56,689 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:35:56,690 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 13:35:56,690 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [914533282] [2021-08-21 13:35:56,693 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 13:35:56,693 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:35:56,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 13:35:56,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-08-21 13:35:56,693 INFO L87 Difference]: Start difference. First operand 5274 states and 17855 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:35:58,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:35:58,212 INFO L93 Difference]: Finished difference Result 5825 states and 19355 transitions. [2021-08-21 13:35:58,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2021-08-21 13:35:58,212 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:35:58,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:35:58,225 INFO L225 Difference]: With dead ends: 5825 [2021-08-21 13:35:58,225 INFO L226 Difference]: Without dead ends: 5779 [2021-08-21 13:35:58,226 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 708 ImplicationChecksByTransitivity, 1013.1ms TimeCoverageRelationStatistics Valid=299, Invalid=2781, Unknown=0, NotChecked=0, Total=3080 [2021-08-21 13:35:58,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5779 states. [2021-08-21 13:35:58,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5779 to 5280. [2021-08-21 13:35:58,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5280 states, 5279 states have (on average 3.385110816442508) internal successors, (17870), 5279 states have internal predecessors, (17870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:35:58,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5280 states to 5280 states and 17870 transitions. [2021-08-21 13:35:58,309 INFO L78 Accepts]: Start accepts. Automaton has 5280 states and 17870 transitions. Word has length 39 [2021-08-21 13:35:58,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:35:58,309 INFO L470 AbstractCegarLoop]: Abstraction has 5280 states and 17870 transitions. [2021-08-21 13:35:58,310 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:35:58,310 INFO L276 IsEmpty]: Start isEmpty. Operand 5280 states and 17870 transitions. [2021-08-21 13:35:58,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:35:58,317 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:35:58,317 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:35:58,317 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable328 [2021-08-21 13:35:58,317 INFO L402 AbstractCegarLoop]: === Iteration 330 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:35:58,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:35:58,318 INFO L82 PathProgramCache]: Analyzing trace with hash 1672232346, now seen corresponding path program 330 times [2021-08-21 13:35:58,318 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:35:58,318 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1229974273] [2021-08-21 13:35:58,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:35:58,318 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:35:58,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:35:58,608 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:35:58,608 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:35:58,608 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1229974273] [2021-08-21 13:35:58,609 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1229974273] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:35:58,609 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:35:58,609 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 13:35:58,609 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458380599] [2021-08-21 13:35:58,609 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 13:35:58,609 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:35:58,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 13:35:58,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-08-21 13:35:58,609 INFO L87 Difference]: Start difference. First operand 5280 states and 17870 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:36:00,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:36:00,199 INFO L93 Difference]: Finished difference Result 5789 states and 19272 transitions. [2021-08-21 13:36:00,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2021-08-21 13:36:00,200 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:36:00,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:36:00,212 INFO L225 Difference]: With dead ends: 5789 [2021-08-21 13:36:00,213 INFO L226 Difference]: Without dead ends: 5744 [2021-08-21 13:36:00,213 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 703 ImplicationChecksByTransitivity, 1019.2ms TimeCoverageRelationStatistics Valid=300, Invalid=2780, Unknown=0, NotChecked=0, Total=3080 [2021-08-21 13:36:00,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5744 states. [2021-08-21 13:36:00,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5744 to 5278. [2021-08-21 13:36:00,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5278 states, 5277 states have (on average 3.385635777904112) internal successors, (17866), 5277 states have internal predecessors, (17866), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:36:00,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5278 states to 5278 states and 17866 transitions. [2021-08-21 13:36:00,292 INFO L78 Accepts]: Start accepts. Automaton has 5278 states and 17866 transitions. Word has length 39 [2021-08-21 13:36:00,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:36:00,292 INFO L470 AbstractCegarLoop]: Abstraction has 5278 states and 17866 transitions. [2021-08-21 13:36:00,292 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:36:00,293 INFO L276 IsEmpty]: Start isEmpty. Operand 5278 states and 17866 transitions. [2021-08-21 13:36:00,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:36:00,300 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:36:00,300 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:36:00,300 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable329 [2021-08-21 13:36:00,301 INFO L402 AbstractCegarLoop]: === Iteration 331 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:36:00,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:36:00,301 INFO L82 PathProgramCache]: Analyzing trace with hash 1851953628, now seen corresponding path program 331 times [2021-08-21 13:36:00,301 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:36:00,301 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2122388773] [2021-08-21 13:36:00,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:36:00,301 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:36:00,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:36:00,671 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:36:00,671 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:36:00,671 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2122388773] [2021-08-21 13:36:00,671 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2122388773] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:36:00,671 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:36:00,671 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 13:36:00,671 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3216871] [2021-08-21 13:36:00,671 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 13:36:00,671 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:36:00,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 13:36:00,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-08-21 13:36:00,672 INFO L87 Difference]: Start difference. First operand 5278 states and 17866 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:36:02,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:36:02,232 INFO L93 Difference]: Finished difference Result 5840 states and 19400 transitions. [2021-08-21 13:36:02,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-08-21 13:36:02,233 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:36:02,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:36:02,245 INFO L225 Difference]: With dead ends: 5840 [2021-08-21 13:36:02,245 INFO L226 Difference]: Without dead ends: 5797 [2021-08-21 13:36:02,246 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 788 ImplicationChecksByTransitivity, 1068.0ms TimeCoverageRelationStatistics Valid=312, Invalid=2994, Unknown=0, NotChecked=0, Total=3306 [2021-08-21 13:36:02,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5797 states. [2021-08-21 13:36:02,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5797 to 5287. [2021-08-21 13:36:02,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5287 states, 5286 states have (on average 3.383844116534241) internal successors, (17887), 5286 states have internal predecessors, (17887), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:36:02,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5287 states to 5287 states and 17887 transitions. [2021-08-21 13:36:02,414 INFO L78 Accepts]: Start accepts. Automaton has 5287 states and 17887 transitions. Word has length 39 [2021-08-21 13:36:02,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:36:02,414 INFO L470 AbstractCegarLoop]: Abstraction has 5287 states and 17887 transitions. [2021-08-21 13:36:02,414 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:36:02,414 INFO L276 IsEmpty]: Start isEmpty. Operand 5287 states and 17887 transitions. [2021-08-21 13:36:02,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:36:02,421 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:36:02,421 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:36:02,421 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable330 [2021-08-21 13:36:02,421 INFO L402 AbstractCegarLoop]: === Iteration 332 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:36:02,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:36:02,422 INFO L82 PathProgramCache]: Analyzing trace with hash -692906532, now seen corresponding path program 332 times [2021-08-21 13:36:02,422 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:36:02,422 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2036159488] [2021-08-21 13:36:02,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:36:02,422 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:36:02,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:36:02,845 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:36:02,846 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:36:02,846 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2036159488] [2021-08-21 13:36:02,846 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2036159488] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:36:02,846 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:36:02,846 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 13:36:02,846 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820584700] [2021-08-21 13:36:02,846 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 13:36:02,846 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:36:02,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 13:36:02,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-08-21 13:36:02,846 INFO L87 Difference]: Start difference. First operand 5287 states and 17887 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:36:04,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:36:04,378 INFO L93 Difference]: Finished difference Result 5805 states and 19315 transitions. [2021-08-21 13:36:04,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2021-08-21 13:36:04,378 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:36:04,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:36:04,390 INFO L225 Difference]: With dead ends: 5805 [2021-08-21 13:36:04,390 INFO L226 Difference]: Without dead ends: 5754 [2021-08-21 13:36:04,391 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 713 ImplicationChecksByTransitivity, 1008.7ms TimeCoverageRelationStatistics Valid=287, Invalid=2793, Unknown=0, NotChecked=0, Total=3080 [2021-08-21 13:36:04,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5754 states. [2021-08-21 13:36:04,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5754 to 5287. [2021-08-21 13:36:04,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5287 states, 5286 states have (on average 3.3832765796443436) internal successors, (17884), 5286 states have internal predecessors, (17884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:36:04,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5287 states to 5287 states and 17884 transitions. [2021-08-21 13:36:04,471 INFO L78 Accepts]: Start accepts. Automaton has 5287 states and 17884 transitions. Word has length 39 [2021-08-21 13:36:04,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:36:04,471 INFO L470 AbstractCegarLoop]: Abstraction has 5287 states and 17884 transitions. [2021-08-21 13:36:04,471 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:36:04,471 INFO L276 IsEmpty]: Start isEmpty. Operand 5287 states and 17884 transitions. [2021-08-21 13:36:04,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:36:04,478 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:36:04,478 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:36:04,478 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable331 [2021-08-21 13:36:04,479 INFO L402 AbstractCegarLoop]: === Iteration 333 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:36:04,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:36:04,479 INFO L82 PathProgramCache]: Analyzing trace with hash -75688130, now seen corresponding path program 333 times [2021-08-21 13:36:04,479 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:36:04,479 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1461051526] [2021-08-21 13:36:04,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:36:04,479 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:36:04,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:36:04,770 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:36:04,770 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:36:04,770 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1461051526] [2021-08-21 13:36:04,770 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1461051526] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:36:04,771 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:36:04,771 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 13:36:04,771 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450353023] [2021-08-21 13:36:04,771 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 13:36:04,771 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:36:04,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 13:36:04,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-08-21 13:36:04,771 INFO L87 Difference]: Start difference. First operand 5287 states and 17884 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:36:06,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:36:06,291 INFO L93 Difference]: Finished difference Result 5828 states and 19359 transitions. [2021-08-21 13:36:06,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-08-21 13:36:06,292 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:36:06,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:36:06,305 INFO L225 Difference]: With dead ends: 5828 [2021-08-21 13:36:06,305 INFO L226 Difference]: Without dead ends: 5782 [2021-08-21 13:36:06,305 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 641 ImplicationChecksByTransitivity, 940.6ms TimeCoverageRelationStatistics Valid=271, Invalid=2591, Unknown=0, NotChecked=0, Total=2862 [2021-08-21 13:36:06,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5782 states. [2021-08-21 13:36:06,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5782 to 5294. [2021-08-21 13:36:06,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5294 states, 5293 states have (on average 3.3816361231815604) internal successors, (17899), 5293 states have internal predecessors, (17899), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:36:06,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5294 states to 5294 states and 17899 transitions. [2021-08-21 13:36:06,391 INFO L78 Accepts]: Start accepts. Automaton has 5294 states and 17899 transitions. Word has length 39 [2021-08-21 13:36:06,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:36:06,391 INFO L470 AbstractCegarLoop]: Abstraction has 5294 states and 17899 transitions. [2021-08-21 13:36:06,391 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:36:06,391 INFO L276 IsEmpty]: Start isEmpty. Operand 5294 states and 17899 transitions. [2021-08-21 13:36:06,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:36:06,399 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:36:06,399 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:36:06,399 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable332 [2021-08-21 13:36:06,399 INFO L402 AbstractCegarLoop]: === Iteration 334 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:36:06,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:36:06,400 INFO L82 PathProgramCache]: Analyzing trace with hash -1510755620, now seen corresponding path program 334 times [2021-08-21 13:36:06,400 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:36:06,400 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [529761599] [2021-08-21 13:36:06,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:36:06,400 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:36:06,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:36:06,666 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:36:06,667 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:36:06,667 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [529761599] [2021-08-21 13:36:06,667 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [529761599] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:36:06,667 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:36:06,667 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 13:36:06,667 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913149623] [2021-08-21 13:36:06,667 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 13:36:06,667 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:36:06,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 13:36:06,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-08-21 13:36:06,667 INFO L87 Difference]: Start difference. First operand 5294 states and 17899 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:36:08,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:36:08,157 INFO L93 Difference]: Finished difference Result 5791 states and 19268 transitions. [2021-08-21 13:36:08,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-08-21 13:36:08,158 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:36:08,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:36:08,170 INFO L225 Difference]: With dead ends: 5791 [2021-08-21 13:36:08,171 INFO L226 Difference]: Without dead ends: 5736 [2021-08-21 13:36:08,171 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 677 ImplicationChecksByTransitivity, 930.3ms TimeCoverageRelationStatistics Valid=277, Invalid=2693, Unknown=0, NotChecked=0, Total=2970 [2021-08-21 13:36:08,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5736 states. [2021-08-21 13:36:08,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5736 to 5291. [2021-08-21 13:36:08,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5291 states, 5290 states have (on average 3.3824196597353495) internal successors, (17893), 5290 states have internal predecessors, (17893), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:36:08,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5291 states to 5291 states and 17893 transitions. [2021-08-21 13:36:08,255 INFO L78 Accepts]: Start accepts. Automaton has 5291 states and 17893 transitions. Word has length 39 [2021-08-21 13:36:08,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:36:08,256 INFO L470 AbstractCegarLoop]: Abstraction has 5291 states and 17893 transitions. [2021-08-21 13:36:08,256 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:36:08,256 INFO L276 IsEmpty]: Start isEmpty. Operand 5291 states and 17893 transitions. [2021-08-21 13:36:08,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:36:08,263 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:36:08,263 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:36:08,263 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable333 [2021-08-21 13:36:08,263 INFO L402 AbstractCegarLoop]: === Iteration 335 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:36:08,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:36:08,264 INFO L82 PathProgramCache]: Analyzing trace with hash 1501508558, now seen corresponding path program 335 times [2021-08-21 13:36:08,264 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:36:08,264 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [358338238] [2021-08-21 13:36:08,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:36:08,264 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:36:08,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:36:08,582 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:36:08,583 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:36:08,583 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [358338238] [2021-08-21 13:36:08,583 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [358338238] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:36:08,583 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:36:08,583 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 13:36:08,583 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [112546557] [2021-08-21 13:36:08,583 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 13:36:08,583 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:36:08,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 13:36:08,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-08-21 13:36:08,583 INFO L87 Difference]: Start difference. First operand 5291 states and 17893 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:36:10,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:36:10,150 INFO L93 Difference]: Finished difference Result 5775 states and 19228 transitions. [2021-08-21 13:36:10,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2021-08-21 13:36:10,150 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:36:10,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:36:10,165 INFO L225 Difference]: With dead ends: 5775 [2021-08-21 13:36:10,165 INFO L226 Difference]: Without dead ends: 5718 [2021-08-21 13:36:10,166 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 713 ImplicationChecksByTransitivity, 982.6ms TimeCoverageRelationStatistics Valid=285, Invalid=2795, Unknown=0, NotChecked=0, Total=3080 [2021-08-21 13:36:10,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5718 states. [2021-08-21 13:36:10,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5718 to 5283. [2021-08-21 13:36:10,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5283 states, 5282 states have (on average 3.3839454751987885) internal successors, (17874), 5282 states have internal predecessors, (17874), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:36:10,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5283 states to 5283 states and 17874 transitions. [2021-08-21 13:36:10,258 INFO L78 Accepts]: Start accepts. Automaton has 5283 states and 17874 transitions. Word has length 39 [2021-08-21 13:36:10,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:36:10,258 INFO L470 AbstractCegarLoop]: Abstraction has 5283 states and 17874 transitions. [2021-08-21 13:36:10,259 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:36:10,259 INFO L276 IsEmpty]: Start isEmpty. Operand 5283 states and 17874 transitions. [2021-08-21 13:36:10,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:36:10,267 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:36:10,267 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:36:10,267 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable334 [2021-08-21 13:36:10,267 INFO L402 AbstractCegarLoop]: === Iteration 336 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:36:10,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:36:10,268 INFO L82 PathProgramCache]: Analyzing trace with hash -2052727112, now seen corresponding path program 336 times [2021-08-21 13:36:10,268 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:36:10,268 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1955735845] [2021-08-21 13:36:10,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:36:10,268 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:36:10,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:36:10,554 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:36:10,555 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:36:10,555 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1955735845] [2021-08-21 13:36:10,555 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1955735845] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:36:10,555 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:36:10,555 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 13:36:10,555 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833261000] [2021-08-21 13:36:10,555 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 13:36:10,555 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:36:10,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 13:36:10,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-08-21 13:36:10,555 INFO L87 Difference]: Start difference. First operand 5283 states and 17874 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:36:12,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:36:12,004 INFO L93 Difference]: Finished difference Result 5706 states and 19073 transitions. [2021-08-21 13:36:12,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-08-21 13:36:12,005 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:36:12,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:36:12,018 INFO L225 Difference]: With dead ends: 5706 [2021-08-21 13:36:12,018 INFO L226 Difference]: Without dead ends: 5663 [2021-08-21 13:36:12,019 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 637 ImplicationChecksByTransitivity, 925.6ms TimeCoverageRelationStatistics Valid=272, Invalid=2590, Unknown=0, NotChecked=0, Total=2862 [2021-08-21 13:36:12,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5663 states. [2021-08-21 13:36:12,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5663 to 5279. [2021-08-21 13:36:12,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5279 states, 5278 states have (on average 3.3846153846153846) internal successors, (17864), 5278 states have internal predecessors, (17864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:36:12,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5279 states to 5279 states and 17864 transitions. [2021-08-21 13:36:12,161 INFO L78 Accepts]: Start accepts. Automaton has 5279 states and 17864 transitions. Word has length 39 [2021-08-21 13:36:12,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:36:12,162 INFO L470 AbstractCegarLoop]: Abstraction has 5279 states and 17864 transitions. [2021-08-21 13:36:12,162 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:36:12,162 INFO L276 IsEmpty]: Start isEmpty. Operand 5279 states and 17864 transitions. [2021-08-21 13:36:12,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:36:12,171 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:36:12,171 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:36:12,171 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable335 [2021-08-21 13:36:12,171 INFO L402 AbstractCegarLoop]: === Iteration 337 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:36:12,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:36:12,171 INFO L82 PathProgramCache]: Analyzing trace with hash -215969622, now seen corresponding path program 337 times [2021-08-21 13:36:12,171 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:36:12,172 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1589134188] [2021-08-21 13:36:12,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:36:12,172 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:36:12,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:36:12,421 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:36:12,421 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:36:12,421 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1589134188] [2021-08-21 13:36:12,421 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1589134188] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:36:12,421 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:36:12,421 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 13:36:12,421 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104207728] [2021-08-21 13:36:12,422 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 13:36:12,422 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:36:12,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 13:36:12,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-08-21 13:36:12,422 INFO L87 Difference]: Start difference. First operand 5279 states and 17864 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:36:13,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:36:13,677 INFO L93 Difference]: Finished difference Result 5704 states and 19064 transitions. [2021-08-21 13:36:13,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-08-21 13:36:13,677 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:36:13,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:36:13,690 INFO L225 Difference]: With dead ends: 5704 [2021-08-21 13:36:13,690 INFO L226 Difference]: Without dead ends: 5643 [2021-08-21 13:36:13,690 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 639 ImplicationChecksByTransitivity, 784.8ms TimeCoverageRelationStatistics Valid=269, Invalid=2593, Unknown=0, NotChecked=0, Total=2862 [2021-08-21 13:36:13,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5643 states. [2021-08-21 13:36:13,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5643 to 5267. [2021-08-21 13:36:13,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5267 states, 5266 states have (on average 3.387580706418534) internal successors, (17839), 5266 states have internal predecessors, (17839), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:36:13,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5267 states to 5267 states and 17839 transitions. [2021-08-21 13:36:13,770 INFO L78 Accepts]: Start accepts. Automaton has 5267 states and 17839 transitions. Word has length 39 [2021-08-21 13:36:13,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:36:13,770 INFO L470 AbstractCegarLoop]: Abstraction has 5267 states and 17839 transitions. [2021-08-21 13:36:13,770 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:36:13,770 INFO L276 IsEmpty]: Start isEmpty. Operand 5267 states and 17839 transitions. [2021-08-21 13:36:13,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:36:13,778 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:36:13,778 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:36:13,778 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable336 [2021-08-21 13:36:13,778 INFO L402 AbstractCegarLoop]: === Iteration 338 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:36:13,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:36:13,778 INFO L82 PathProgramCache]: Analyzing trace with hash -908934758, now seen corresponding path program 338 times [2021-08-21 13:36:13,778 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:36:13,778 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2007947957] [2021-08-21 13:36:13,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:36:13,778 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:36:13,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:36:13,990 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:36:13,990 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:36:13,990 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2007947957] [2021-08-21 13:36:13,990 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2007947957] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:36:13,990 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:36:13,990 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 13:36:13,990 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1300136726] [2021-08-21 13:36:13,990 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 13:36:13,990 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:36:13,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 13:36:13,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-08-21 13:36:13,991 INFO L87 Difference]: Start difference. First operand 5267 states and 17839 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:36:14,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:36:14,846 INFO L93 Difference]: Finished difference Result 5556 states and 18699 transitions. [2021-08-21 13:36:14,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-08-21 13:36:14,846 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:36:14,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:36:14,857 INFO L225 Difference]: With dead ends: 5556 [2021-08-21 13:36:14,857 INFO L226 Difference]: Without dead ends: 5493 [2021-08-21 13:36:14,858 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 389 ImplicationChecksByTransitivity, 493.0ms TimeCoverageRelationStatistics Valid=202, Invalid=1868, Unknown=0, NotChecked=0, Total=2070 [2021-08-21 13:36:14,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5493 states. [2021-08-21 13:36:14,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5493 to 5299. [2021-08-21 13:36:14,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5299 states, 5298 states have (on average 3.3829747074367686) internal successors, (17923), 5298 states have internal predecessors, (17923), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:36:14,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5299 states to 5299 states and 17923 transitions. [2021-08-21 13:36:14,937 INFO L78 Accepts]: Start accepts. Automaton has 5299 states and 17923 transitions. Word has length 39 [2021-08-21 13:36:14,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:36:14,937 INFO L470 AbstractCegarLoop]: Abstraction has 5299 states and 17923 transitions. [2021-08-21 13:36:14,937 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:36:14,937 INFO L276 IsEmpty]: Start isEmpty. Operand 5299 states and 17923 transitions. [2021-08-21 13:36:14,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:36:14,945 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:36:14,945 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:36:14,946 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable337 [2021-08-21 13:36:14,946 INFO L402 AbstractCegarLoop]: === Iteration 339 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:36:14,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:36:14,946 INFO L82 PathProgramCache]: Analyzing trace with hash -1438835206, now seen corresponding path program 339 times [2021-08-21 13:36:14,946 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:36:14,946 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1852868400] [2021-08-21 13:36:14,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:36:14,946 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:36:14,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:36:15,141 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:36:15,141 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:36:15,141 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1852868400] [2021-08-21 13:36:15,142 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1852868400] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:36:15,142 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:36:15,142 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 13:36:15,142 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45408917] [2021-08-21 13:36:15,142 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 13:36:15,142 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:36:15,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 13:36:15,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-08-21 13:36:15,142 INFO L87 Difference]: Start difference. First operand 5299 states and 17923 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:36:15,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:36:15,971 INFO L93 Difference]: Finished difference Result 5580 states and 18759 transitions. [2021-08-21 13:36:15,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-08-21 13:36:15,971 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:36:15,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:36:15,982 INFO L225 Difference]: With dead ends: 5580 [2021-08-21 13:36:15,982 INFO L226 Difference]: Without dead ends: 5457 [2021-08-21 13:36:15,983 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 415 ImplicationChecksByTransitivity, 496.8ms TimeCoverageRelationStatistics Valid=210, Invalid=1952, Unknown=0, NotChecked=0, Total=2162 [2021-08-21 13:36:15,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5457 states. [2021-08-21 13:36:16,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5457 to 5267. [2021-08-21 13:36:16,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5267 states, 5266 states have (on average 3.3845423471325486) internal successors, (17823), 5266 states have internal predecessors, (17823), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:36:16,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5267 states to 5267 states and 17823 transitions. [2021-08-21 13:36:16,062 INFO L78 Accepts]: Start accepts. Automaton has 5267 states and 17823 transitions. Word has length 39 [2021-08-21 13:36:16,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:36:16,062 INFO L470 AbstractCegarLoop]: Abstraction has 5267 states and 17823 transitions. [2021-08-21 13:36:16,062 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:36:16,062 INFO L276 IsEmpty]: Start isEmpty. Operand 5267 states and 17823 transitions. [2021-08-21 13:36:16,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:36:16,071 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:36:16,071 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:36:16,071 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable338 [2021-08-21 13:36:16,071 INFO L402 AbstractCegarLoop]: === Iteration 340 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:36:16,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:36:16,071 INFO L82 PathProgramCache]: Analyzing trace with hash -1941297604, now seen corresponding path program 340 times [2021-08-21 13:36:16,071 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:36:16,071 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1299301000] [2021-08-21 13:36:16,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:36:16,071 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:36:16,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:36:16,269 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:36:16,269 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:36:16,270 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1299301000] [2021-08-21 13:36:16,270 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1299301000] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:36:16,270 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:36:16,270 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 13:36:16,270 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476853098] [2021-08-21 13:36:16,270 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 13:36:16,270 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:36:16,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 13:36:16,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-08-21 13:36:16,270 INFO L87 Difference]: Start difference. First operand 5267 states and 17823 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:36:17,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:36:17,329 INFO L93 Difference]: Finished difference Result 5540 states and 18645 transitions. [2021-08-21 13:36:17,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-08-21 13:36:17,330 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:36:17,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:36:17,342 INFO L225 Difference]: With dead ends: 5540 [2021-08-21 13:36:17,342 INFO L226 Difference]: Without dead ends: 5477 [2021-08-21 13:36:17,343 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 419 ImplicationChecksByTransitivity, 640.3ms TimeCoverageRelationStatistics Valid=210, Invalid=1952, Unknown=0, NotChecked=0, Total=2162 [2021-08-21 13:36:17,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5477 states. [2021-08-21 13:36:17,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5477 to 5267. [2021-08-21 13:36:17,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5267 states, 5266 states have (on average 3.383782757311052) internal successors, (17819), 5266 states have internal predecessors, (17819), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:36:17,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5267 states to 5267 states and 17819 transitions. [2021-08-21 13:36:17,432 INFO L78 Accepts]: Start accepts. Automaton has 5267 states and 17819 transitions. Word has length 39 [2021-08-21 13:36:17,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:36:17,432 INFO L470 AbstractCegarLoop]: Abstraction has 5267 states and 17819 transitions. [2021-08-21 13:36:17,433 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:36:17,433 INFO L276 IsEmpty]: Start isEmpty. Operand 5267 states and 17819 transitions. [2021-08-21 13:36:17,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:36:17,441 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:36:17,441 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:36:17,441 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable339 [2021-08-21 13:36:17,441 INFO L402 AbstractCegarLoop]: === Iteration 341 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:36:17,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:36:17,442 INFO L82 PathProgramCache]: Analyzing trace with hash 2108177594, now seen corresponding path program 341 times [2021-08-21 13:36:17,442 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:36:17,442 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [800881252] [2021-08-21 13:36:17,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:36:17,442 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:36:17,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:36:17,739 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:36:17,739 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:36:17,739 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [800881252] [2021-08-21 13:36:17,739 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [800881252] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:36:17,740 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:36:17,740 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 13:36:17,740 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16649456] [2021-08-21 13:36:17,740 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 13:36:17,740 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:36:17,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 13:36:17,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-08-21 13:36:17,740 INFO L87 Difference]: Start difference. First operand 5267 states and 17819 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:36:18,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:36:18,928 INFO L93 Difference]: Finished difference Result 5557 states and 18671 transitions. [2021-08-21 13:36:18,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-08-21 13:36:18,929 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:36:18,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:36:18,942 INFO L225 Difference]: With dead ends: 5557 [2021-08-21 13:36:18,942 INFO L226 Difference]: Without dead ends: 5514 [2021-08-21 13:36:18,942 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 392 ImplicationChecksByTransitivity, 718.7ms TimeCoverageRelationStatistics Valid=197, Invalid=1873, Unknown=0, NotChecked=0, Total=2070 [2021-08-21 13:36:18,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5514 states. [2021-08-21 13:36:19,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5514 to 5273. [2021-08-21 13:36:19,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5273 states, 5272 states have (on average 3.3823975720789075) internal successors, (17832), 5272 states have internal predecessors, (17832), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:36:19,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5273 states to 5273 states and 17832 transitions. [2021-08-21 13:36:19,041 INFO L78 Accepts]: Start accepts. Automaton has 5273 states and 17832 transitions. Word has length 39 [2021-08-21 13:36:19,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:36:19,041 INFO L470 AbstractCegarLoop]: Abstraction has 5273 states and 17832 transitions. [2021-08-21 13:36:19,041 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:36:19,041 INFO L276 IsEmpty]: Start isEmpty. Operand 5273 states and 17832 transitions. [2021-08-21 13:36:19,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:36:19,050 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:36:19,050 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:36:19,050 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable340 [2021-08-21 13:36:19,050 INFO L402 AbstractCegarLoop]: === Iteration 342 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:36:19,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:36:19,051 INFO L82 PathProgramCache]: Analyzing trace with hash -1357258532, now seen corresponding path program 342 times [2021-08-21 13:36:19,051 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:36:19,051 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [608622873] [2021-08-21 13:36:19,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:36:19,051 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:36:19,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:36:19,339 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:36:19,339 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:36:19,339 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [608622873] [2021-08-21 13:36:19,339 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [608622873] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:36:19,339 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:36:19,339 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 13:36:19,339 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [117129478] [2021-08-21 13:36:19,339 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 13:36:19,339 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:36:19,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 13:36:19,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-08-21 13:36:19,340 INFO L87 Difference]: Start difference. First operand 5273 states and 17832 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:36:20,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:36:20,486 INFO L93 Difference]: Finished difference Result 5512 states and 18567 transitions. [2021-08-21 13:36:20,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-08-21 13:36:20,486 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:36:20,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:36:20,500 INFO L225 Difference]: With dead ends: 5512 [2021-08-21 13:36:20,500 INFO L226 Difference]: Without dead ends: 5449 [2021-08-21 13:36:20,501 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 365 ImplicationChecksByTransitivity, 655.2ms TimeCoverageRelationStatistics Valid=188, Invalid=1792, Unknown=0, NotChecked=0, Total=1980 [2021-08-21 13:36:20,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5449 states. [2021-08-21 13:36:20,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5449 to 5255. [2021-08-21 13:36:20,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5255 states, 5254 states have (on average 3.3858012942519986) internal successors, (17789), 5254 states have internal predecessors, (17789), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:36:20,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5255 states to 5255 states and 17789 transitions. [2021-08-21 13:36:20,605 INFO L78 Accepts]: Start accepts. Automaton has 5255 states and 17789 transitions. Word has length 39 [2021-08-21 13:36:20,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:36:20,605 INFO L470 AbstractCegarLoop]: Abstraction has 5255 states and 17789 transitions. [2021-08-21 13:36:20,605 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:36:20,605 INFO L276 IsEmpty]: Start isEmpty. Operand 5255 states and 17789 transitions. [2021-08-21 13:36:20,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:36:20,614 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:36:20,614 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:36:20,614 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable341 [2021-08-21 13:36:20,614 INFO L402 AbstractCegarLoop]: === Iteration 343 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:36:20,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:36:20,615 INFO L82 PathProgramCache]: Analyzing trace with hash 924472956, now seen corresponding path program 343 times [2021-08-21 13:36:20,615 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:36:20,615 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [780922377] [2021-08-21 13:36:20,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:36:20,615 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:36:20,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:36:20,871 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:36:20,871 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:36:20,871 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [780922377] [2021-08-21 13:36:20,871 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [780922377] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:36:20,871 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:36:20,871 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 13:36:20,871 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135547112] [2021-08-21 13:36:20,871 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 13:36:20,871 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:36:20,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 13:36:20,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-08-21 13:36:20,872 INFO L87 Difference]: Start difference. First operand 5255 states and 17789 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:36:22,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:36:22,074 INFO L93 Difference]: Finished difference Result 5575 states and 18724 transitions. [2021-08-21 13:36:22,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-08-21 13:36:22,074 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:36:22,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:36:22,087 INFO L225 Difference]: With dead ends: 5575 [2021-08-21 13:36:22,087 INFO L226 Difference]: Without dead ends: 5520 [2021-08-21 13:36:22,088 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 509 ImplicationChecksByTransitivity, 741.1ms TimeCoverageRelationStatistics Valid=234, Invalid=2216, Unknown=0, NotChecked=0, Total=2450 [2021-08-21 13:36:22,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5520 states. [2021-08-21 13:36:22,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5520 to 5257. [2021-08-21 13:36:22,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5257 states, 5256 states have (on average 3.3854642313546424) internal successors, (17794), 5256 states have internal predecessors, (17794), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:36:22,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5257 states to 5257 states and 17794 transitions. [2021-08-21 13:36:22,181 INFO L78 Accepts]: Start accepts. Automaton has 5257 states and 17794 transitions. Word has length 39 [2021-08-21 13:36:22,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:36:22,182 INFO L470 AbstractCegarLoop]: Abstraction has 5257 states and 17794 transitions. [2021-08-21 13:36:22,182 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:36:22,182 INFO L276 IsEmpty]: Start isEmpty. Operand 5257 states and 17794 transitions. [2021-08-21 13:36:22,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:36:22,190 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:36:22,191 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:36:22,191 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable342 [2021-08-21 13:36:22,191 INFO L402 AbstractCegarLoop]: === Iteration 344 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:36:22,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:36:22,191 INFO L82 PathProgramCache]: Analyzing trace with hash -2033436326, now seen corresponding path program 344 times [2021-08-21 13:36:22,191 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:36:22,192 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [799531724] [2021-08-21 13:36:22,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:36:22,192 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:36:22,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:36:22,489 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:36:22,489 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:36:22,489 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [799531724] [2021-08-21 13:36:22,489 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [799531724] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:36:22,489 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:36:22,489 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 13:36:22,489 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291774021] [2021-08-21 13:36:22,490 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 13:36:22,490 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:36:22,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 13:36:22,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-08-21 13:36:22,490 INFO L87 Difference]: Start difference. First operand 5257 states and 17794 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:36:23,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:36:23,723 INFO L93 Difference]: Finished difference Result 5551 states and 18654 transitions. [2021-08-21 13:36:23,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-08-21 13:36:23,723 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:36:23,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:36:23,736 INFO L225 Difference]: With dead ends: 5551 [2021-08-21 13:36:23,736 INFO L226 Difference]: Without dead ends: 5508 [2021-08-21 13:36:23,736 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 450 ImplicationChecksByTransitivity, 789.7ms TimeCoverageRelationStatistics Valid=213, Invalid=2043, Unknown=0, NotChecked=0, Total=2256 [2021-08-21 13:36:23,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5508 states. [2021-08-21 13:36:23,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5508 to 5263. [2021-08-21 13:36:23,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5263 states, 5262 states have (on average 3.3840744963892058) internal successors, (17807), 5262 states have internal predecessors, (17807), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:36:23,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5263 states to 5263 states and 17807 transitions. [2021-08-21 13:36:23,824 INFO L78 Accepts]: Start accepts. Automaton has 5263 states and 17807 transitions. Word has length 39 [2021-08-21 13:36:23,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:36:23,824 INFO L470 AbstractCegarLoop]: Abstraction has 5263 states and 17807 transitions. [2021-08-21 13:36:23,824 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:36:23,824 INFO L276 IsEmpty]: Start isEmpty. Operand 5263 states and 17807 transitions. [2021-08-21 13:36:23,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:36:23,832 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:36:23,833 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:36:23,833 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable343 [2021-08-21 13:36:23,833 INFO L402 AbstractCegarLoop]: === Iteration 345 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:36:23,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:36:23,833 INFO L82 PathProgramCache]: Analyzing trace with hash 1990111420, now seen corresponding path program 345 times [2021-08-21 13:36:23,833 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:36:23,833 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [70670769] [2021-08-21 13:36:23,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:36:23,833 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:36:23,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:36:24,110 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:36:24,110 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:36:24,110 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [70670769] [2021-08-21 13:36:24,110 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [70670769] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:36:24,110 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:36:24,110 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 13:36:24,110 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599820435] [2021-08-21 13:36:24,110 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 13:36:24,110 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:36:24,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 13:36:24,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-08-21 13:36:24,111 INFO L87 Difference]: Start difference. First operand 5263 states and 17807 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:36:25,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:36:25,170 INFO L93 Difference]: Finished difference Result 5506 states and 18550 transitions. [2021-08-21 13:36:25,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-08-21 13:36:25,170 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:36:25,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:36:25,186 INFO L225 Difference]: With dead ends: 5506 [2021-08-21 13:36:25,186 INFO L226 Difference]: Without dead ends: 5445 [2021-08-21 13:36:25,186 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 392 ImplicationChecksByTransitivity, 643.2ms TimeCoverageRelationStatistics Valid=197, Invalid=1873, Unknown=0, NotChecked=0, Total=2070 [2021-08-21 13:36:25,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5445 states. [2021-08-21 13:36:25,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5445 to 5251. [2021-08-21 13:36:25,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5251 states, 5250 states have (on average 3.3864761904761904) internal successors, (17779), 5250 states have internal predecessors, (17779), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:36:25,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5251 states to 5251 states and 17779 transitions. [2021-08-21 13:36:25,285 INFO L78 Accepts]: Start accepts. Automaton has 5251 states and 17779 transitions. Word has length 39 [2021-08-21 13:36:25,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:36:25,285 INFO L470 AbstractCegarLoop]: Abstraction has 5251 states and 17779 transitions. [2021-08-21 13:36:25,285 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:36:25,285 INFO L276 IsEmpty]: Start isEmpty. Operand 5251 states and 17779 transitions. [2021-08-21 13:36:25,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:36:25,294 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:36:25,294 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:36:25,294 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable344 [2021-08-21 13:36:25,294 INFO L402 AbstractCegarLoop]: === Iteration 346 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:36:25,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:36:25,294 INFO L82 PathProgramCache]: Analyzing trace with hash 1500706234, now seen corresponding path program 346 times [2021-08-21 13:36:25,294 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:36:25,295 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [89117665] [2021-08-21 13:36:25,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:36:25,295 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:36:25,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:36:25,492 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:36:25,492 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:36:25,492 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [89117665] [2021-08-21 13:36:25,492 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [89117665] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:36:25,493 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:36:25,493 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 13:36:25,493 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670988936] [2021-08-21 13:36:25,493 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 13:36:25,493 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:36:25,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 13:36:25,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-08-21 13:36:25,493 INFO L87 Difference]: Start difference. First operand 5251 states and 17779 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:36:26,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:36:26,632 INFO L93 Difference]: Finished difference Result 5548 states and 18675 transitions. [2021-08-21 13:36:26,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-08-21 13:36:26,633 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:36:26,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:36:26,645 INFO L225 Difference]: With dead ends: 5548 [2021-08-21 13:36:26,646 INFO L226 Difference]: Without dead ends: 5457 [2021-08-21 13:36:26,646 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 443 ImplicationChecksByTransitivity, 679.0ms TimeCoverageRelationStatistics Valid=218, Invalid=2038, Unknown=0, NotChecked=0, Total=2256 [2021-08-21 13:36:26,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5457 states. [2021-08-21 13:36:26,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5457 to 5257. [2021-08-21 13:36:26,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5257 states, 5256 states have (on average 3.3854642313546424) internal successors, (17794), 5256 states have internal predecessors, (17794), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:36:26,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5257 states to 5257 states and 17794 transitions. [2021-08-21 13:36:26,725 INFO L78 Accepts]: Start accepts. Automaton has 5257 states and 17794 transitions. Word has length 39 [2021-08-21 13:36:26,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:36:26,725 INFO L470 AbstractCegarLoop]: Abstraction has 5257 states and 17794 transitions. [2021-08-21 13:36:26,725 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:36:26,725 INFO L276 IsEmpty]: Start isEmpty. Operand 5257 states and 17794 transitions. [2021-08-21 13:36:26,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:36:26,733 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:36:26,733 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:36:26,733 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable345 [2021-08-21 13:36:26,733 INFO L402 AbstractCegarLoop]: === Iteration 347 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:36:26,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:36:26,733 INFO L82 PathProgramCache]: Analyzing trace with hash -1503716644, now seen corresponding path program 347 times [2021-08-21 13:36:26,734 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:36:26,734 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [835420620] [2021-08-21 13:36:26,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:36:26,734 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:36:26,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:36:27,023 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:36:27,023 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:36:27,023 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [835420620] [2021-08-21 13:36:27,023 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [835420620] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:36:27,023 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:36:27,023 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 13:36:27,023 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332961356] [2021-08-21 13:36:27,024 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 13:36:27,024 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:36:27,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 13:36:27,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-08-21 13:36:27,024 INFO L87 Difference]: Start difference. First operand 5257 states and 17794 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:36:28,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:36:28,295 INFO L93 Difference]: Finished difference Result 5565 states and 18683 transitions. [2021-08-21 13:36:28,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-08-21 13:36:28,295 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:36:28,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:36:28,307 INFO L225 Difference]: With dead ends: 5565 [2021-08-21 13:36:28,307 INFO L226 Difference]: Without dead ends: 5510 [2021-08-21 13:36:28,308 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 475 ImplicationChecksByTransitivity, 790.1ms TimeCoverageRelationStatistics Valid=226, Invalid=2126, Unknown=0, NotChecked=0, Total=2352 [2021-08-21 13:36:28,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5510 states. [2021-08-21 13:36:28,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5510 to 5259. [2021-08-21 13:36:28,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5259 states, 5258 states have (on average 3.3851274248763787) internal successors, (17799), 5258 states have internal predecessors, (17799), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:36:28,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5259 states to 5259 states and 17799 transitions. [2021-08-21 13:36:28,382 INFO L78 Accepts]: Start accepts. Automaton has 5259 states and 17799 transitions. Word has length 39 [2021-08-21 13:36:28,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:36:28,382 INFO L470 AbstractCegarLoop]: Abstraction has 5259 states and 17799 transitions. [2021-08-21 13:36:28,382 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:36:28,382 INFO L276 IsEmpty]: Start isEmpty. Operand 5259 states and 17799 transitions. [2021-08-21 13:36:28,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:36:28,389 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:36:28,390 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:36:28,390 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable346 [2021-08-21 13:36:28,390 INFO L402 AbstractCegarLoop]: === Iteration 348 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:36:28,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:36:28,390 INFO L82 PathProgramCache]: Analyzing trace with hash -166658630, now seen corresponding path program 348 times [2021-08-21 13:36:28,390 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:36:28,390 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1978774531] [2021-08-21 13:36:28,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:36:28,390 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:36:28,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:36:28,740 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:36:28,740 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:36:28,740 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1978774531] [2021-08-21 13:36:28,740 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1978774531] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:36:28,740 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:36:28,741 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 13:36:28,741 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132520104] [2021-08-21 13:36:28,741 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 13:36:28,741 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:36:28,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 13:36:28,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-08-21 13:36:28,741 INFO L87 Difference]: Start difference. First operand 5259 states and 17799 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:36:29,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:36:29,941 INFO L93 Difference]: Finished difference Result 5541 states and 18613 transitions. [2021-08-21 13:36:29,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-08-21 13:36:29,941 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:36:29,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:36:29,953 INFO L225 Difference]: With dead ends: 5541 [2021-08-21 13:36:29,953 INFO L226 Difference]: Without dead ends: 5498 [2021-08-21 13:36:29,953 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 418 ImplicationChecksByTransitivity, 737.0ms TimeCoverageRelationStatistics Valid=204, Invalid=1958, Unknown=0, NotChecked=0, Total=2162 [2021-08-21 13:36:29,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5498 states. [2021-08-21 13:36:30,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5498 to 5265. [2021-08-21 13:36:30,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5265 states, 5264 states have (on average 3.3837386018237083) internal successors, (17812), 5264 states have internal predecessors, (17812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:36:30,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5265 states to 5265 states and 17812 transitions. [2021-08-21 13:36:30,034 INFO L78 Accepts]: Start accepts. Automaton has 5265 states and 17812 transitions. Word has length 39 [2021-08-21 13:36:30,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:36:30,034 INFO L470 AbstractCegarLoop]: Abstraction has 5265 states and 17812 transitions. [2021-08-21 13:36:30,034 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:36:30,034 INFO L276 IsEmpty]: Start isEmpty. Operand 5265 states and 17812 transitions. [2021-08-21 13:36:30,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:36:30,041 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:36:30,041 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:36:30,042 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable347 [2021-08-21 13:36:30,042 INFO L402 AbstractCegarLoop]: === Iteration 349 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:36:30,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:36:30,042 INFO L82 PathProgramCache]: Analyzing trace with hash -438078180, now seen corresponding path program 349 times [2021-08-21 13:36:30,042 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:36:30,042 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [365634401] [2021-08-21 13:36:30,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:36:30,042 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:36:30,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:36:30,337 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:36:30,337 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:36:30,337 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [365634401] [2021-08-21 13:36:30,337 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [365634401] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:36:30,337 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:36:30,337 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 13:36:30,337 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703020073] [2021-08-21 13:36:30,337 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 13:36:30,338 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:36:30,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 13:36:30,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-08-21 13:36:30,338 INFO L87 Difference]: Start difference. First operand 5265 states and 17812 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:36:31,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:36:31,537 INFO L93 Difference]: Finished difference Result 5496 states and 18509 transitions. [2021-08-21 13:36:31,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-08-21 13:36:31,537 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:36:31,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:36:31,549 INFO L225 Difference]: With dead ends: 5496 [2021-08-21 13:36:31,549 INFO L226 Difference]: Without dead ends: 5405 [2021-08-21 13:36:31,550 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 418 ImplicationChecksByTransitivity, 735.8ms TimeCoverageRelationStatistics Valid=204, Invalid=1958, Unknown=0, NotChecked=0, Total=2162 [2021-08-21 13:36:31,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5405 states. [2021-08-21 13:36:31,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5405 to 5235. [2021-08-21 13:36:31,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5235 states, 5234 states have (on average 3.388803974016049) internal successors, (17737), 5234 states have internal predecessors, (17737), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:36:31,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5235 states to 5235 states and 17737 transitions. [2021-08-21 13:36:31,694 INFO L78 Accepts]: Start accepts. Automaton has 5235 states and 17737 transitions. Word has length 39 [2021-08-21 13:36:31,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:36:31,694 INFO L470 AbstractCegarLoop]: Abstraction has 5235 states and 17737 transitions. [2021-08-21 13:36:31,694 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:36:31,694 INFO L276 IsEmpty]: Start isEmpty. Operand 5235 states and 17737 transitions. [2021-08-21 13:36:31,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:36:31,702 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:36:31,702 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:36:31,702 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable348 [2021-08-21 13:36:31,702 INFO L402 AbstractCegarLoop]: === Iteration 350 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:36:31,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:36:31,702 INFO L82 PathProgramCache]: Analyzing trace with hash -1164129526, now seen corresponding path program 350 times [2021-08-21 13:36:31,703 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:36:31,703 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1539245709] [2021-08-21 13:36:31,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:36:31,703 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:36:31,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:36:31,991 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:36:31,991 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:36:31,991 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1539245709] [2021-08-21 13:36:31,991 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1539245709] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:36:31,991 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:36:31,991 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 13:36:31,991 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1767033726] [2021-08-21 13:36:31,991 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 13:36:31,991 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:36:31,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 13:36:31,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-08-21 13:36:31,992 INFO L87 Difference]: Start difference. First operand 5235 states and 17737 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:36:34,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:36:34,057 INFO L93 Difference]: Finished difference Result 7596 states and 25341 transitions. [2021-08-21 13:36:34,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2021-08-21 13:36:34,057 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:36:34,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:36:34,074 INFO L225 Difference]: With dead ends: 7596 [2021-08-21 13:36:34,074 INFO L226 Difference]: Without dead ends: 7541 [2021-08-21 13:36:34,074 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1395 ImplicationChecksByTransitivity, 1250.0ms TimeCoverageRelationStatistics Valid=433, Invalid=4537, Unknown=0, NotChecked=0, Total=4970 [2021-08-21 13:36:34,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7541 states. [2021-08-21 13:36:34,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7541 to 5254. [2021-08-21 13:36:34,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5254 states, 5253 states have (on average 3.3893013516086046) internal successors, (17804), 5253 states have internal predecessors, (17804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:36:34,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5254 states to 5254 states and 17804 transitions. [2021-08-21 13:36:34,171 INFO L78 Accepts]: Start accepts. Automaton has 5254 states and 17804 transitions. Word has length 39 [2021-08-21 13:36:34,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:36:34,171 INFO L470 AbstractCegarLoop]: Abstraction has 5254 states and 17804 transitions. [2021-08-21 13:36:34,171 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:36:34,171 INFO L276 IsEmpty]: Start isEmpty. Operand 5254 states and 17804 transitions. [2021-08-21 13:36:34,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:36:34,179 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:36:34,179 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:36:34,179 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable349 [2021-08-21 13:36:34,179 INFO L402 AbstractCegarLoop]: === Iteration 351 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:36:34,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:36:34,180 INFO L82 PathProgramCache]: Analyzing trace with hash 8522696, now seen corresponding path program 351 times [2021-08-21 13:36:34,180 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:36:34,180 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1013894515] [2021-08-21 13:36:34,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:36:34,180 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:36:34,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:36:34,470 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:36:34,470 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:36:34,470 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1013894515] [2021-08-21 13:36:34,470 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1013894515] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:36:34,470 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:36:34,470 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 13:36:34,470 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628856946] [2021-08-21 13:36:34,470 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 13:36:34,470 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:36:34,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 13:36:34,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-08-21 13:36:34,471 INFO L87 Difference]: Start difference. First operand 5254 states and 17804 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:36:36,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:36:36,898 INFO L93 Difference]: Finished difference Result 8366 states and 27938 transitions. [2021-08-21 13:36:36,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2021-08-21 13:36:36,898 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:36:36,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:36:36,916 INFO L225 Difference]: With dead ends: 8366 [2021-08-21 13:36:36,917 INFO L226 Difference]: Without dead ends: 8243 [2021-08-21 13:36:36,917 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1721 ImplicationChecksByTransitivity, 1407.1ms TimeCoverageRelationStatistics Valid=480, Invalid=5372, Unknown=0, NotChecked=0, Total=5852 [2021-08-21 13:36:36,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8243 states. [2021-08-21 13:36:37,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8243 to 5258. [2021-08-21 13:36:37,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5258 states, 5257 states have (on average 3.3897660262507134) internal successors, (17820), 5257 states have internal predecessors, (17820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:36:37,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5258 states to 5258 states and 17820 transitions. [2021-08-21 13:36:37,018 INFO L78 Accepts]: Start accepts. Automaton has 5258 states and 17820 transitions. Word has length 39 [2021-08-21 13:36:37,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:36:37,018 INFO L470 AbstractCegarLoop]: Abstraction has 5258 states and 17820 transitions. [2021-08-21 13:36:37,018 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:36:37,018 INFO L276 IsEmpty]: Start isEmpty. Operand 5258 states and 17820 transitions. [2021-08-21 13:36:37,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:36:37,026 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:36:37,026 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:36:37,026 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable350 [2021-08-21 13:36:37,026 INFO L402 AbstractCegarLoop]: === Iteration 352 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:36:37,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:36:37,026 INFO L82 PathProgramCache]: Analyzing trace with hash -1868880906, now seen corresponding path program 352 times [2021-08-21 13:36:37,026 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:36:37,027 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [278689540] [2021-08-21 13:36:37,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:36:37,027 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:36:37,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:36:37,317 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:36:37,318 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:36:37,318 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [278689540] [2021-08-21 13:36:37,318 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [278689540] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:36:37,318 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:36:37,318 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 13:36:37,318 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983210633] [2021-08-21 13:36:37,318 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 13:36:37,318 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:36:37,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 13:36:37,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-08-21 13:36:37,318 INFO L87 Difference]: Start difference. First operand 5258 states and 17820 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:36:39,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:36:39,277 INFO L93 Difference]: Finished difference Result 7513 states and 25139 transitions. [2021-08-21 13:36:39,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2021-08-21 13:36:39,277 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:36:39,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:36:39,292 INFO L225 Difference]: With dead ends: 7513 [2021-08-21 13:36:39,292 INFO L226 Difference]: Without dead ends: 7422 [2021-08-21 13:36:39,293 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1140 ImplicationChecksByTransitivity, 1139.8ms TimeCoverageRelationStatistics Valid=374, Invalid=3916, Unknown=0, NotChecked=0, Total=4290 [2021-08-21 13:36:39,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7422 states. [2021-08-21 13:36:39,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7422 to 5264. [2021-08-21 13:36:39,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5264 states, 5263 states have (on average 3.3876116283488504) internal successors, (17829), 5263 states have internal predecessors, (17829), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:36:39,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5264 states to 5264 states and 17829 transitions. [2021-08-21 13:36:39,400 INFO L78 Accepts]: Start accepts. Automaton has 5264 states and 17829 transitions. Word has length 39 [2021-08-21 13:36:39,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:36:39,400 INFO L470 AbstractCegarLoop]: Abstraction has 5264 states and 17829 transitions. [2021-08-21 13:36:39,400 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:36:39,400 INFO L276 IsEmpty]: Start isEmpty. Operand 5264 states and 17829 transitions. [2021-08-21 13:36:39,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:36:39,408 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:36:39,409 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:36:39,409 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable351 [2021-08-21 13:36:39,409 INFO L402 AbstractCegarLoop]: === Iteration 353 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:36:39,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:36:39,409 INFO L82 PathProgramCache]: Analyzing trace with hash 923604184, now seen corresponding path program 353 times [2021-08-21 13:36:39,409 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:36:39,409 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [774705650] [2021-08-21 13:36:39,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:36:39,409 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:36:39,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:36:39,707 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:36:39,708 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:36:39,708 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [774705650] [2021-08-21 13:36:39,708 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [774705650] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:36:39,708 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:36:39,708 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 13:36:39,708 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1307287428] [2021-08-21 13:36:39,708 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 13:36:39,708 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:36:39,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 13:36:39,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-08-21 13:36:39,708 INFO L87 Difference]: Start difference. First operand 5264 states and 17829 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:36:42,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:36:42,042 INFO L93 Difference]: Finished difference Result 8372 states and 28036 transitions. [2021-08-21 13:36:42,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2021-08-21 13:36:42,043 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:36:42,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:36:42,062 INFO L225 Difference]: With dead ends: 8372 [2021-08-21 13:36:42,063 INFO L226 Difference]: Without dead ends: 8272 [2021-08-21 13:36:42,063 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1384 ImplicationChecksByTransitivity, 1272.9ms TimeCoverageRelationStatistics Valid=409, Invalid=4561, Unknown=0, NotChecked=0, Total=4970 [2021-08-21 13:36:42,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8272 states. [2021-08-21 13:36:42,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8272 to 5252. [2021-08-21 13:36:42,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5252 states, 5251 states have (on average 3.3877356693963057) internal successors, (17789), 5251 states have internal predecessors, (17789), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:36:42,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5252 states to 5252 states and 17789 transitions. [2021-08-21 13:36:42,167 INFO L78 Accepts]: Start accepts. Automaton has 5252 states and 17789 transitions. Word has length 39 [2021-08-21 13:36:42,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:36:42,167 INFO L470 AbstractCegarLoop]: Abstraction has 5252 states and 17789 transitions. [2021-08-21 13:36:42,168 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:36:42,168 INFO L276 IsEmpty]: Start isEmpty. Operand 5252 states and 17789 transitions. [2021-08-21 13:36:42,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:36:42,176 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:36:42,176 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:36:42,176 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable352 [2021-08-21 13:36:42,176 INFO L402 AbstractCegarLoop]: === Iteration 354 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:36:42,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:36:42,176 INFO L82 PathProgramCache]: Analyzing trace with hash 2098474924, now seen corresponding path program 354 times [2021-08-21 13:36:42,176 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:36:42,176 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [176064916] [2021-08-21 13:36:42,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:36:42,176 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:36:42,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:36:42,459 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:36:42,460 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:36:42,460 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [176064916] [2021-08-21 13:36:42,460 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [176064916] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:36:42,460 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:36:42,460 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 13:36:42,460 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1221034696] [2021-08-21 13:36:42,460 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 13:36:42,460 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:36:42,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 13:36:42,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-08-21 13:36:42,460 INFO L87 Difference]: Start difference. First operand 5252 states and 17789 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:36:44,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:36:44,091 INFO L93 Difference]: Finished difference Result 5678 states and 18934 transitions. [2021-08-21 13:36:44,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-08-21 13:36:44,091 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:36:44,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:36:44,102 INFO L225 Difference]: With dead ends: 5678 [2021-08-21 13:36:44,102 INFO L226 Difference]: Without dead ends: 5623 [2021-08-21 13:36:44,103 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 836 ImplicationChecksByTransitivity, 1086.3ms TimeCoverageRelationStatistics Valid=318, Invalid=3104, Unknown=0, NotChecked=0, Total=3422 [2021-08-21 13:36:44,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5623 states. [2021-08-21 13:36:44,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5623 to 5262. [2021-08-21 13:36:44,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5262 states, 5261 states have (on average 3.3856681239308117) internal successors, (17812), 5261 states have internal predecessors, (17812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:36:44,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5262 states to 5262 states and 17812 transitions. [2021-08-21 13:36:44,175 INFO L78 Accepts]: Start accepts. Automaton has 5262 states and 17812 transitions. Word has length 39 [2021-08-21 13:36:44,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:36:44,175 INFO L470 AbstractCegarLoop]: Abstraction has 5262 states and 17812 transitions. [2021-08-21 13:36:44,175 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:36:44,176 INFO L276 IsEmpty]: Start isEmpty. Operand 5262 states and 17812 transitions. [2021-08-21 13:36:44,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:36:44,183 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:36:44,183 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:36:44,183 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable353 [2021-08-21 13:36:44,183 INFO L402 AbstractCegarLoop]: === Iteration 355 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:36:44,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:36:44,183 INFO L82 PathProgramCache]: Analyzing trace with hash -1023840150, now seen corresponding path program 355 times [2021-08-21 13:36:44,183 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:36:44,183 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [361454915] [2021-08-21 13:36:44,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:36:44,183 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:36:44,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:36:44,510 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:36:44,511 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:36:44,511 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [361454915] [2021-08-21 13:36:44,511 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [361454915] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:36:44,511 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:36:44,511 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 13:36:44,511 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239940603] [2021-08-21 13:36:44,511 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 13:36:44,511 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:36:44,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 13:36:44,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-08-21 13:36:44,511 INFO L87 Difference]: Start difference. First operand 5262 states and 17812 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:36:46,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:36:46,029 INFO L93 Difference]: Finished difference Result 5636 states and 18835 transitions. [2021-08-21 13:36:46,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2021-08-21 13:36:46,029 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:36:46,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:36:46,041 INFO L225 Difference]: With dead ends: 5636 [2021-08-21 13:36:46,041 INFO L226 Difference]: Without dead ends: 5576 [2021-08-21 13:36:46,042 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 717 ImplicationChecksByTransitivity, 1029.6ms TimeCoverageRelationStatistics Valid=298, Invalid=2782, Unknown=0, NotChecked=0, Total=3080 [2021-08-21 13:36:46,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5576 states. [2021-08-21 13:36:46,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5576 to 5268. [2021-08-21 13:36:46,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5268 states, 5267 states have (on average 3.384849060186064) internal successors, (17828), 5267 states have internal predecessors, (17828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:36:46,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5268 states to 5268 states and 17828 transitions. [2021-08-21 13:36:46,122 INFO L78 Accepts]: Start accepts. Automaton has 5268 states and 17828 transitions. Word has length 39 [2021-08-21 13:36:46,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:36:46,123 INFO L470 AbstractCegarLoop]: Abstraction has 5268 states and 17828 transitions. [2021-08-21 13:36:46,123 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:36:46,123 INFO L276 IsEmpty]: Start isEmpty. Operand 5268 states and 17828 transitions. [2021-08-21 13:36:46,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:36:46,131 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:36:46,131 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:36:46,131 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable354 [2021-08-21 13:36:46,131 INFO L402 AbstractCegarLoop]: === Iteration 356 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:36:46,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:36:46,131 INFO L82 PathProgramCache]: Analyzing trace with hash -1091585030, now seen corresponding path program 356 times [2021-08-21 13:36:46,131 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:36:46,131 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1631866250] [2021-08-21 13:36:46,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:36:46,131 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:36:46,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:36:46,329 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:36:46,330 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:36:46,330 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1631866250] [2021-08-21 13:36:46,330 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1631866250] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:36:46,330 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:36:46,330 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 13:36:46,330 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765834004] [2021-08-21 13:36:46,330 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 13:36:46,330 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:36:46,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 13:36:46,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-08-21 13:36:46,331 INFO L87 Difference]: Start difference. First operand 5268 states and 17828 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:36:47,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:36:47,414 INFO L93 Difference]: Finished difference Result 5607 states and 18754 transitions. [2021-08-21 13:36:47,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-08-21 13:36:47,414 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:36:47,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:36:47,426 INFO L225 Difference]: With dead ends: 5607 [2021-08-21 13:36:47,426 INFO L226 Difference]: Without dead ends: 5564 [2021-08-21 13:36:47,426 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 640 ImplicationChecksByTransitivity, 714.3ms TimeCoverageRelationStatistics Valid=267, Invalid=2595, Unknown=0, NotChecked=0, Total=2862 [2021-08-21 13:36:47,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5564 states. [2021-08-21 13:36:47,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5564 to 5274. [2021-08-21 13:36:47,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5274 states, 5273 states have (on average 3.3834629243315) internal successors, (17841), 5273 states have internal predecessors, (17841), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:36:47,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5274 states to 5274 states and 17841 transitions. [2021-08-21 13:36:47,504 INFO L78 Accepts]: Start accepts. Automaton has 5274 states and 17841 transitions. Word has length 39 [2021-08-21 13:36:47,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:36:47,504 INFO L470 AbstractCegarLoop]: Abstraction has 5274 states and 17841 transitions. [2021-08-21 13:36:47,504 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:36:47,504 INFO L276 IsEmpty]: Start isEmpty. Operand 5274 states and 17841 transitions. [2021-08-21 13:36:47,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:36:47,512 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:36:47,512 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:36:47,512 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable355 [2021-08-21 13:36:47,512 INFO L402 AbstractCegarLoop]: === Iteration 357 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:36:47,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:36:47,512 INFO L82 PathProgramCache]: Analyzing trace with hash 658522106, now seen corresponding path program 357 times [2021-08-21 13:36:47,513 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:36:47,513 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [842776954] [2021-08-21 13:36:47,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:36:47,513 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:36:47,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:36:47,710 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:36:47,710 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:36:47,711 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [842776954] [2021-08-21 13:36:47,711 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [842776954] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:36:47,711 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:36:47,711 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 13:36:47,711 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [822342081] [2021-08-21 13:36:47,711 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 13:36:47,711 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:36:47,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 13:36:47,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-08-21 13:36:47,711 INFO L87 Difference]: Start difference. First operand 5274 states and 17841 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:36:48,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:36:48,943 INFO L93 Difference]: Finished difference Result 5613 states and 18771 transitions. [2021-08-21 13:36:48,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-08-21 13:36:48,943 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:36:48,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:36:48,955 INFO L225 Difference]: With dead ends: 5613 [2021-08-21 13:36:48,955 INFO L226 Difference]: Without dead ends: 5562 [2021-08-21 13:36:48,955 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 574 ImplicationChecksByTransitivity, 761.8ms TimeCoverageRelationStatistics Valid=251, Invalid=2401, Unknown=0, NotChecked=0, Total=2652 [2021-08-21 13:36:48,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5562 states. [2021-08-21 13:36:49,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5562 to 5274. [2021-08-21 13:36:49,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5274 states, 5273 states have (on average 3.3828939882419875) internal successors, (17838), 5273 states have internal predecessors, (17838), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:36:49,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5274 states to 5274 states and 17838 transitions. [2021-08-21 13:36:49,027 INFO L78 Accepts]: Start accepts. Automaton has 5274 states and 17838 transitions. Word has length 39 [2021-08-21 13:36:49,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:36:49,027 INFO L470 AbstractCegarLoop]: Abstraction has 5274 states and 17838 transitions. [2021-08-21 13:36:49,027 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:36:49,027 INFO L276 IsEmpty]: Start isEmpty. Operand 5274 states and 17838 transitions. [2021-08-21 13:36:49,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:36:49,034 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:36:49,034 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:36:49,034 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable356 [2021-08-21 13:36:49,034 INFO L402 AbstractCegarLoop]: === Iteration 358 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:36:49,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:36:49,034 INFO L82 PathProgramCache]: Analyzing trace with hash 1275740508, now seen corresponding path program 358 times [2021-08-21 13:36:49,035 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:36:49,035 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [807224233] [2021-08-21 13:36:49,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:36:49,035 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:36:49,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:36:49,315 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:36:49,316 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:36:49,316 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [807224233] [2021-08-21 13:36:49,316 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [807224233] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:36:49,316 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:36:49,316 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 13:36:49,316 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524686676] [2021-08-21 13:36:49,316 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 13:36:49,316 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:36:49,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 13:36:49,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-08-21 13:36:49,316 INFO L87 Difference]: Start difference. First operand 5274 states and 17838 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:36:50,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:36:50,518 INFO L93 Difference]: Finished difference Result 5609 states and 18750 transitions. [2021-08-21 13:36:50,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-08-21 13:36:50,518 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:36:50,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:36:50,532 INFO L225 Difference]: With dead ends: 5609 [2021-08-21 13:36:50,533 INFO L226 Difference]: Without dead ends: 5563 [2021-08-21 13:36:50,533 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 604 ImplicationChecksByTransitivity, 817.2ms TimeCoverageRelationStatistics Valid=262, Invalid=2494, Unknown=0, NotChecked=0, Total=2756 [2021-08-21 13:36:50,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5563 states. [2021-08-21 13:36:50,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5563 to 5281. [2021-08-21 13:36:50,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5281 states, 5280 states have (on average 3.38125) internal successors, (17853), 5280 states have internal predecessors, (17853), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:36:50,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5281 states to 5281 states and 17853 transitions. [2021-08-21 13:36:50,627 INFO L78 Accepts]: Start accepts. Automaton has 5281 states and 17853 transitions. Word has length 39 [2021-08-21 13:36:50,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:36:50,627 INFO L470 AbstractCegarLoop]: Abstraction has 5281 states and 17853 transitions. [2021-08-21 13:36:50,627 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:36:50,628 INFO L276 IsEmpty]: Start isEmpty. Operand 5281 states and 17853 transitions. [2021-08-21 13:36:50,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:36:50,636 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:36:50,636 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:36:50,636 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable357 [2021-08-21 13:36:50,636 INFO L402 AbstractCegarLoop]: === Iteration 359 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:36:50,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:36:50,636 INFO L82 PathProgramCache]: Analyzing trace with hash -159326982, now seen corresponding path program 359 times [2021-08-21 13:36:50,636 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:36:50,636 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [294929123] [2021-08-21 13:36:50,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:36:50,636 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:36:50,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:36:50,827 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:36:50,827 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:36:50,827 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [294929123] [2021-08-21 13:36:50,827 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [294929123] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:36:50,827 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:36:50,827 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 13:36:50,827 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [334898019] [2021-08-21 13:36:50,827 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 13:36:50,827 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:36:50,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 13:36:50,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-08-21 13:36:50,828 INFO L87 Difference]: Start difference. First operand 5281 states and 17853 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:36:52,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:36:52,147 INFO L93 Difference]: Finished difference Result 5599 states and 18724 transitions. [2021-08-21 13:36:52,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-08-21 13:36:52,148 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:36:52,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:36:52,160 INFO L225 Difference]: With dead ends: 5599 [2021-08-21 13:36:52,160 INFO L226 Difference]: Without dead ends: 5544 [2021-08-21 13:36:52,160 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 574 ImplicationChecksByTransitivity, 818.3ms TimeCoverageRelationStatistics Valid=251, Invalid=2401, Unknown=0, NotChecked=0, Total=2652 [2021-08-21 13:36:52,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5544 states. [2021-08-21 13:36:52,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5544 to 5278. [2021-08-21 13:36:52,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5278 states, 5277 states have (on average 3.3820352472996023) internal successors, (17847), 5277 states have internal predecessors, (17847), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:36:52,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5278 states to 5278 states and 17847 transitions. [2021-08-21 13:36:52,248 INFO L78 Accepts]: Start accepts. Automaton has 5278 states and 17847 transitions. Word has length 39 [2021-08-21 13:36:52,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:36:52,248 INFO L470 AbstractCegarLoop]: Abstraction has 5278 states and 17847 transitions. [2021-08-21 13:36:52,248 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:36:52,248 INFO L276 IsEmpty]: Start isEmpty. Operand 5278 states and 17847 transitions. [2021-08-21 13:36:52,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:36:52,255 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:36:52,255 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:36:52,255 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable358 [2021-08-21 13:36:52,256 INFO L402 AbstractCegarLoop]: === Iteration 360 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:36:52,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:36:52,256 INFO L82 PathProgramCache]: Analyzing trace with hash -1442030100, now seen corresponding path program 360 times [2021-08-21 13:36:52,256 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:36:52,256 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1163015065] [2021-08-21 13:36:52,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:36:52,256 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:36:52,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:36:52,543 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:36:52,543 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:36:52,543 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1163015065] [2021-08-21 13:36:52,544 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1163015065] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:36:52,544 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:36:52,544 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 13:36:52,544 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825984727] [2021-08-21 13:36:52,545 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 13:36:52,545 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:36:52,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 13:36:52,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-08-21 13:36:52,545 INFO L87 Difference]: Start difference. First operand 5278 states and 17847 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:36:53,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:36:53,976 INFO L93 Difference]: Finished difference Result 5652 states and 18840 transitions. [2021-08-21 13:36:53,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-08-21 13:36:53,977 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:36:53,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:36:53,988 INFO L225 Difference]: With dead ends: 5652 [2021-08-21 13:36:53,988 INFO L226 Difference]: Without dead ends: 5595 [2021-08-21 13:36:53,989 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 647 ImplicationChecksByTransitivity, 883.8ms TimeCoverageRelationStatistics Valid=270, Invalid=2592, Unknown=0, NotChecked=0, Total=2862 [2021-08-21 13:36:53,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5595 states. [2021-08-21 13:36:54,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5595 to 5278. [2021-08-21 13:36:54,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5278 states, 5277 states have (on average 3.3818457456888384) internal successors, (17846), 5277 states have internal predecessors, (17846), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:36:54,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5278 states to 5278 states and 17846 transitions. [2021-08-21 13:36:54,064 INFO L78 Accepts]: Start accepts. Automaton has 5278 states and 17846 transitions. Word has length 39 [2021-08-21 13:36:54,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:36:54,064 INFO L470 AbstractCegarLoop]: Abstraction has 5278 states and 17846 transitions. [2021-08-21 13:36:54,064 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:36:54,064 INFO L276 IsEmpty]: Start isEmpty. Operand 5278 states and 17846 transitions. [2021-08-21 13:36:54,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:36:54,071 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:36:54,071 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:36:54,071 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable359 [2021-08-21 13:36:54,071 INFO L402 AbstractCegarLoop]: === Iteration 361 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:36:54,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:36:54,072 INFO L82 PathProgramCache]: Analyzing trace with hash 1135459016, now seen corresponding path program 361 times [2021-08-21 13:36:54,072 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:36:54,072 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1733340382] [2021-08-21 13:36:54,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:36:54,072 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:36:54,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:36:54,355 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:36:54,355 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:36:54,355 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1733340382] [2021-08-21 13:36:54,355 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1733340382] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:36:54,355 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:36:54,355 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 13:36:54,355 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [571415281] [2021-08-21 13:36:54,355 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 13:36:54,355 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:36:54,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 13:36:54,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-08-21 13:36:54,356 INFO L87 Difference]: Start difference. First operand 5278 states and 17846 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:36:55,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:36:55,762 INFO L93 Difference]: Finished difference Result 5653 states and 18841 transitions. [2021-08-21 13:36:55,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-08-21 13:36:55,762 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:36:55,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:36:55,775 INFO L225 Difference]: With dead ends: 5653 [2021-08-21 13:36:55,775 INFO L226 Difference]: Without dead ends: 5594 [2021-08-21 13:36:55,775 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 646 ImplicationChecksByTransitivity, 925.0ms TimeCoverageRelationStatistics Valid=272, Invalid=2590, Unknown=0, NotChecked=0, Total=2862 [2021-08-21 13:36:55,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5594 states. [2021-08-21 13:36:55,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5594 to 5277. [2021-08-21 13:36:55,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5277 states, 5276 states have (on average 3.3821076573161486) internal successors, (17844), 5276 states have internal predecessors, (17844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:36:55,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5277 states to 5277 states and 17844 transitions. [2021-08-21 13:36:55,915 INFO L78 Accepts]: Start accepts. Automaton has 5277 states and 17844 transitions. Word has length 39 [2021-08-21 13:36:55,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:36:55,915 INFO L470 AbstractCegarLoop]: Abstraction has 5277 states and 17844 transitions. [2021-08-21 13:36:55,915 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:36:55,915 INFO L276 IsEmpty]: Start isEmpty. Operand 5277 states and 17844 transitions. [2021-08-21 13:36:55,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:36:55,923 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:36:55,923 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:36:55,923 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable360 [2021-08-21 13:36:55,923 INFO L402 AbstractCegarLoop]: === Iteration 362 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:36:55,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:36:55,924 INFO L82 PathProgramCache]: Analyzing trace with hash -103273512, now seen corresponding path program 362 times [2021-08-21 13:36:55,924 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:36:55,924 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [470621359] [2021-08-21 13:36:55,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:36:55,924 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:36:55,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:36:56,219 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:36:56,219 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:36:56,219 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [470621359] [2021-08-21 13:36:56,219 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [470621359] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:36:56,219 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:36:56,219 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 13:36:56,219 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964926099] [2021-08-21 13:36:56,219 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 13:36:56,219 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:36:56,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 13:36:56,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-08-21 13:36:56,220 INFO L87 Difference]: Start difference. First operand 5277 states and 17844 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:36:57,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:36:57,528 INFO L93 Difference]: Finished difference Result 5561 states and 18637 transitions. [2021-08-21 13:36:57,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-08-21 13:36:57,528 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:36:57,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:36:57,540 INFO L225 Difference]: With dead ends: 5561 [2021-08-21 13:36:57,541 INFO L226 Difference]: Without dead ends: 5486 [2021-08-21 13:36:57,541 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 543 ImplicationChecksByTransitivity, 828.7ms TimeCoverageRelationStatistics Valid=237, Invalid=2313, Unknown=0, NotChecked=0, Total=2550 [2021-08-21 13:36:57,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5486 states. [2021-08-21 13:36:57,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5486 to 5263. [2021-08-21 13:36:57,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5263 states, 5262 states have (on average 3.3842645381984036) internal successors, (17808), 5262 states have internal predecessors, (17808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:36:57,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5263 states to 5263 states and 17808 transitions. [2021-08-21 13:36:57,627 INFO L78 Accepts]: Start accepts. Automaton has 5263 states and 17808 transitions. Word has length 39 [2021-08-21 13:36:57,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:36:57,628 INFO L470 AbstractCegarLoop]: Abstraction has 5263 states and 17808 transitions. [2021-08-21 13:36:57,628 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:36:57,628 INFO L276 IsEmpty]: Start isEmpty. Operand 5263 states and 17808 transitions. [2021-08-21 13:36:57,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:36:57,637 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:36:57,637 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:36:57,637 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable361 [2021-08-21 13:36:57,637 INFO L402 AbstractCegarLoop]: === Iteration 363 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:36:57,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:36:57,638 INFO L82 PathProgramCache]: Analyzing trace with hash 60473304, now seen corresponding path program 363 times [2021-08-21 13:36:57,638 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:36:57,638 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [205463759] [2021-08-21 13:36:57,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:36:57,638 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:36:57,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:36:57,929 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:36:57,929 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:36:57,929 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [205463759] [2021-08-21 13:36:57,929 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [205463759] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:36:57,929 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:36:57,930 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 13:36:57,930 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2135364760] [2021-08-21 13:36:57,930 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 13:36:57,930 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:36:57,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 13:36:57,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-08-21 13:36:57,930 INFO L87 Difference]: Start difference. First operand 5263 states and 17808 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:36:59,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:36:59,154 INFO L93 Difference]: Finished difference Result 5480 states and 18458 transitions. [2021-08-21 13:36:59,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-08-21 13:36:59,154 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:36:59,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:36:59,167 INFO L225 Difference]: With dead ends: 5480 [2021-08-21 13:36:59,167 INFO L226 Difference]: Without dead ends: 5393 [2021-08-21 13:36:59,168 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 446 ImplicationChecksByTransitivity, 752.5ms TimeCoverageRelationStatistics Valid=221, Invalid=2035, Unknown=0, NotChecked=0, Total=2256 [2021-08-21 13:36:59,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5393 states. [2021-08-21 13:36:59,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5393 to 5237. [2021-08-21 13:36:59,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5237 states, 5236 states have (on average 3.3894194041252863) internal successors, (17747), 5236 states have internal predecessors, (17747), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:36:59,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5237 states to 5237 states and 17747 transitions. [2021-08-21 13:36:59,256 INFO L78 Accepts]: Start accepts. Automaton has 5237 states and 17747 transitions. Word has length 39 [2021-08-21 13:36:59,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:36:59,256 INFO L470 AbstractCegarLoop]: Abstraction has 5237 states and 17747 transitions. [2021-08-21 13:36:59,256 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:36:59,256 INFO L276 IsEmpty]: Start isEmpty. Operand 5237 states and 17747 transitions. [2021-08-21 13:36:59,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:36:59,264 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:36:59,264 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:36:59,264 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable362 [2021-08-21 13:36:59,264 INFO L402 AbstractCegarLoop]: === Iteration 364 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:36:59,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:36:59,265 INFO L82 PathProgramCache]: Analyzing trace with hash 692633254, now seen corresponding path program 364 times [2021-08-21 13:36:59,265 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:36:59,265 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [627628147] [2021-08-21 13:36:59,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:36:59,265 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:36:59,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:36:59,532 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:36:59,532 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:36:59,532 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [627628147] [2021-08-21 13:36:59,532 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [627628147] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:36:59,532 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:36:59,532 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 13:36:59,532 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379046209] [2021-08-21 13:36:59,533 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 13:36:59,533 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:36:59,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 13:36:59,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-08-21 13:36:59,534 INFO L87 Difference]: Start difference. First operand 5237 states and 17747 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:37:01,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:37:01,350 INFO L93 Difference]: Finished difference Result 5863 states and 19501 transitions. [2021-08-21 13:37:01,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2021-08-21 13:37:01,350 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:37:01,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:37:01,364 INFO L225 Difference]: With dead ends: 5863 [2021-08-21 13:37:01,364 INFO L226 Difference]: Without dead ends: 5799 [2021-08-21 13:37:01,364 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1092 ImplicationChecksByTransitivity, 1155.4ms TimeCoverageRelationStatistics Valid=349, Invalid=3811, Unknown=0, NotChecked=0, Total=4160 [2021-08-21 13:37:01,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5799 states. [2021-08-21 13:37:01,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5799 to 5241. [2021-08-21 13:37:01,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5241 states, 5240 states have (on average 3.3887404580152674) internal successors, (17757), 5240 states have internal predecessors, (17757), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:37:01,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5241 states to 5241 states and 17757 transitions. [2021-08-21 13:37:01,461 INFO L78 Accepts]: Start accepts. Automaton has 5241 states and 17757 transitions. Word has length 39 [2021-08-21 13:37:01,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:37:01,462 INFO L470 AbstractCegarLoop]: Abstraction has 5241 states and 17757 transitions. [2021-08-21 13:37:01,462 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:37:01,462 INFO L276 IsEmpty]: Start isEmpty. Operand 5241 states and 17757 transitions. [2021-08-21 13:37:01,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:37:01,472 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:37:01,472 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:37:01,472 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable363 [2021-08-21 13:37:01,472 INFO L402 AbstractCegarLoop]: === Iteration 365 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:37:01,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:37:01,472 INFO L82 PathProgramCache]: Analyzing trace with hash 1611116824, now seen corresponding path program 365 times [2021-08-21 13:37:01,472 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:37:01,472 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1659254939] [2021-08-21 13:37:01,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:37:01,473 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:37:01,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:37:01,769 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:37:01,769 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:37:01,769 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1659254939] [2021-08-21 13:37:01,769 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1659254939] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:37:01,769 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:37:01,769 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 13:37:01,769 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066822016] [2021-08-21 13:37:01,769 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 13:37:01,769 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:37:01,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 13:37:01,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-08-21 13:37:01,770 INFO L87 Difference]: Start difference. First operand 5241 states and 17757 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:37:03,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:37:03,007 INFO L93 Difference]: Finished difference Result 5680 states and 18997 transitions. [2021-08-21 13:37:03,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-08-21 13:37:03,007 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:37:03,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:37:03,019 INFO L225 Difference]: With dead ends: 5680 [2021-08-21 13:37:03,019 INFO L226 Difference]: Without dead ends: 5637 [2021-08-21 13:37:03,019 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 479 ImplicationChecksByTransitivity, 745.6ms TimeCoverageRelationStatistics Valid=223, Invalid=2129, Unknown=0, NotChecked=0, Total=2352 [2021-08-21 13:37:03,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5637 states. [2021-08-21 13:37:03,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5637 to 5247. [2021-08-21 13:37:03,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5247 states, 5246 states have (on average 3.3873427373236753) internal successors, (17770), 5246 states have internal predecessors, (17770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:37:03,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5247 states to 5247 states and 17770 transitions. [2021-08-21 13:37:03,095 INFO L78 Accepts]: Start accepts. Automaton has 5247 states and 17770 transitions. Word has length 39 [2021-08-21 13:37:03,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:37:03,095 INFO L470 AbstractCegarLoop]: Abstraction has 5247 states and 17770 transitions. [2021-08-21 13:37:03,095 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:37:03,096 INFO L276 IsEmpty]: Start isEmpty. Operand 5247 states and 17770 transitions. [2021-08-21 13:37:03,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:37:03,103 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:37:03,103 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:37:03,103 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable364 [2021-08-21 13:37:03,103 INFO L402 AbstractCegarLoop]: === Iteration 366 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:37:03,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:37:03,103 INFO L82 PathProgramCache]: Analyzing trace with hash 1631265558, now seen corresponding path program 366 times [2021-08-21 13:37:03,103 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:37:03,104 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1805681699] [2021-08-21 13:37:03,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:37:03,104 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:37:03,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:37:03,391 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:37:03,391 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:37:03,391 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1805681699] [2021-08-21 13:37:03,391 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1805681699] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:37:03,391 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:37:03,391 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 13:37:03,391 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625021680] [2021-08-21 13:37:03,391 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 13:37:03,391 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:37:03,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 13:37:03,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-08-21 13:37:03,392 INFO L87 Difference]: Start difference. First operand 5247 states and 17770 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:37:04,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:37:04,635 INFO L93 Difference]: Finished difference Result 5643 states and 18915 transitions. [2021-08-21 13:37:04,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-08-21 13:37:04,636 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:37:04,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:37:04,647 INFO L225 Difference]: With dead ends: 5643 [2021-08-21 13:37:04,647 INFO L226 Difference]: Without dead ends: 5600 [2021-08-21 13:37:04,648 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 479 ImplicationChecksByTransitivity, 790.8ms TimeCoverageRelationStatistics Valid=226, Invalid=2126, Unknown=0, NotChecked=0, Total=2352 [2021-08-21 13:37:04,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5600 states. [2021-08-21 13:37:04,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5600 to 5243. [2021-08-21 13:37:04,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5243 states, 5242 states have (on average 3.3880198397558186) internal successors, (17760), 5242 states have internal predecessors, (17760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:37:04,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5243 states to 5243 states and 17760 transitions. [2021-08-21 13:37:04,728 INFO L78 Accepts]: Start accepts. Automaton has 5243 states and 17760 transitions. Word has length 39 [2021-08-21 13:37:04,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:37:04,728 INFO L470 AbstractCegarLoop]: Abstraction has 5243 states and 17760 transitions. [2021-08-21 13:37:04,729 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:37:04,729 INFO L276 IsEmpty]: Start isEmpty. Operand 5243 states and 17760 transitions. [2021-08-21 13:37:04,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:37:04,736 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:37:04,737 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:37:04,737 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable365 [2021-08-21 13:37:04,737 INFO L402 AbstractCegarLoop]: === Iteration 367 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:37:04,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:37:04,737 INFO L82 PathProgramCache]: Analyzing trace with hash -1511198250, now seen corresponding path program 367 times [2021-08-21 13:37:04,737 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:37:04,737 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [544205599] [2021-08-21 13:37:04,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:37:04,737 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:37:04,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:37:05,031 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:37:05,031 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:37:05,031 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [544205599] [2021-08-21 13:37:05,031 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [544205599] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:37:05,031 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:37:05,031 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 13:37:05,032 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658800709] [2021-08-21 13:37:05,032 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 13:37:05,032 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:37:05,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 13:37:05,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-08-21 13:37:05,032 INFO L87 Difference]: Start difference. First operand 5243 states and 17760 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:37:06,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:37:06,230 INFO L93 Difference]: Finished difference Result 5714 states and 19112 transitions. [2021-08-21 13:37:06,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-08-21 13:37:06,231 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:37:06,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:37:06,244 INFO L225 Difference]: With dead ends: 5714 [2021-08-21 13:37:06,244 INFO L226 Difference]: Without dead ends: 5654 [2021-08-21 13:37:06,245 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 613 ImplicationChecksByTransitivity, 800.2ms TimeCoverageRelationStatistics Valid=257, Invalid=2499, Unknown=0, NotChecked=0, Total=2756 [2021-08-21 13:37:06,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5654 states. [2021-08-21 13:37:06,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5654 to 5237. [2021-08-21 13:37:06,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5237 states, 5236 states have (on average 3.3894194041252863) internal successors, (17747), 5236 states have internal predecessors, (17747), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:37:06,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5237 states to 5237 states and 17747 transitions. [2021-08-21 13:37:06,336 INFO L78 Accepts]: Start accepts. Automaton has 5237 states and 17747 transitions. Word has length 39 [2021-08-21 13:37:06,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:37:06,336 INFO L470 AbstractCegarLoop]: Abstraction has 5237 states and 17747 transitions. [2021-08-21 13:37:06,336 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:37:06,336 INFO L276 IsEmpty]: Start isEmpty. Operand 5237 states and 17747 transitions. [2021-08-21 13:37:06,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:37:06,345 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:37:06,345 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:37:06,345 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable366 [2021-08-21 13:37:06,345 INFO L402 AbstractCegarLoop]: === Iteration 368 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:37:06,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:37:06,345 INFO L82 PathProgramCache]: Analyzing trace with hash 704202504, now seen corresponding path program 368 times [2021-08-21 13:37:06,345 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:37:06,345 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1031300810] [2021-08-21 13:37:06,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:37:06,345 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:37:06,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:37:06,623 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:37:06,624 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:37:06,624 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1031300810] [2021-08-21 13:37:06,624 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1031300810] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:37:06,624 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:37:06,624 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-08-21 13:37:06,624 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1482830284] [2021-08-21 13:37:06,624 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-08-21 13:37:06,624 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:37:06,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-08-21 13:37:06,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-08-21 13:37:06,624 INFO L87 Difference]: Start difference. First operand 5237 states and 17747 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:37:07,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:37:07,744 INFO L93 Difference]: Finished difference Result 5682 states and 19052 transitions. [2021-08-21 13:37:07,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-08-21 13:37:07,744 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:37:07,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:37:07,757 INFO L225 Difference]: With dead ends: 5682 [2021-08-21 13:37:07,757 INFO L226 Difference]: Without dead ends: 5606 [2021-08-21 13:37:07,758 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 484 ImplicationChecksByTransitivity, 705.8ms TimeCoverageRelationStatistics Valid=214, Invalid=2042, Unknown=0, NotChecked=0, Total=2256 [2021-08-21 13:37:07,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5606 states. [2021-08-21 13:37:07,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5606 to 5249. [2021-08-21 13:37:07,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5249 states, 5248 states have (on average 3.3862423780487805) internal successors, (17771), 5248 states have internal predecessors, (17771), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:37:07,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5249 states to 5249 states and 17771 transitions. [2021-08-21 13:37:07,915 INFO L78 Accepts]: Start accepts. Automaton has 5249 states and 17771 transitions. Word has length 39 [2021-08-21 13:37:07,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:37:07,915 INFO L470 AbstractCegarLoop]: Abstraction has 5249 states and 17771 transitions. [2021-08-21 13:37:07,916 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:37:07,916 INFO L276 IsEmpty]: Start isEmpty. Operand 5249 states and 17771 transitions. [2021-08-21 13:37:07,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:37:07,923 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:37:07,923 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:37:07,923 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable367 [2021-08-21 13:37:07,923 INFO L402 AbstractCegarLoop]: === Iteration 369 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:37:07,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:37:07,924 INFO L82 PathProgramCache]: Analyzing trace with hash -313851108, now seen corresponding path program 369 times [2021-08-21 13:37:07,924 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:37:07,924 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [701568460] [2021-08-21 13:37:07,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:37:07,924 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:37:07,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:37:08,156 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:37:08,156 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:37:08,156 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [701568460] [2021-08-21 13:37:08,156 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [701568460] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:37:08,156 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:37:08,156 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 13:37:08,156 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543575758] [2021-08-21 13:37:08,156 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 13:37:08,156 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:37:08,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 13:37:08,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-08-21 13:37:08,157 INFO L87 Difference]: Start difference. First operand 5249 states and 17771 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:37:09,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:37:09,278 INFO L93 Difference]: Finished difference Result 5664 states and 18998 transitions. [2021-08-21 13:37:09,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-08-21 13:37:09,278 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:37:09,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:37:09,291 INFO L225 Difference]: With dead ends: 5664 [2021-08-21 13:37:09,291 INFO L226 Difference]: Without dead ends: 5594 [2021-08-21 13:37:09,291 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 547 ImplicationChecksByTransitivity, 665.5ms TimeCoverageRelationStatistics Valid=233, Invalid=2317, Unknown=0, NotChecked=0, Total=2550 [2021-08-21 13:37:09,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5594 states. [2021-08-21 13:37:09,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5594 to 5237. [2021-08-21 13:37:09,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5237 states, 5236 states have (on average 3.388655462184874) internal successors, (17743), 5236 states have internal predecessors, (17743), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:37:09,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5237 states to 5237 states and 17743 transitions. [2021-08-21 13:37:09,377 INFO L78 Accepts]: Start accepts. Automaton has 5237 states and 17743 transitions. Word has length 39 [2021-08-21 13:37:09,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:37:09,378 INFO L470 AbstractCegarLoop]: Abstraction has 5237 states and 17743 transitions. [2021-08-21 13:37:09,378 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:37:09,378 INFO L276 IsEmpty]: Start isEmpty. Operand 5237 states and 17743 transitions. [2021-08-21 13:37:09,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:37:09,386 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:37:09,386 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:37:09,387 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable368 [2021-08-21 13:37:09,387 INFO L402 AbstractCegarLoop]: === Iteration 370 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:37:09,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:37:09,387 INFO L82 PathProgramCache]: Analyzing trace with hash 532332572, now seen corresponding path program 370 times [2021-08-21 13:37:09,387 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:37:09,387 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1858096938] [2021-08-21 13:37:09,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:37:09,387 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:37:09,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:37:09,675 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:37:09,675 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:37:09,675 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1858096938] [2021-08-21 13:37:09,675 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1858096938] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:37:09,675 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:37:09,675 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 13:37:09,675 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774178923] [2021-08-21 13:37:09,676 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 13:37:09,676 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:37:09,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 13:37:09,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-08-21 13:37:09,676 INFO L87 Difference]: Start difference. First operand 5237 states and 17743 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:37:12,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:37:12,109 INFO L93 Difference]: Finished difference Result 8130 states and 27321 transitions. [2021-08-21 13:37:12,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2021-08-21 13:37:12,109 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:37:12,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:37:12,128 INFO L225 Difference]: With dead ends: 8130 [2021-08-21 13:37:12,128 INFO L226 Difference]: Without dead ends: 8024 [2021-08-21 13:37:12,129 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1649 ImplicationChecksByTransitivity, 1420.0ms TimeCoverageRelationStatistics Valid=457, Invalid=5243, Unknown=0, NotChecked=0, Total=5700 [2021-08-21 13:37:12,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8024 states. [2021-08-21 13:37:12,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8024 to 5290. [2021-08-21 13:37:12,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5290 states, 5289 states have (on average 3.3891094724900737) internal successors, (17925), 5289 states have internal predecessors, (17925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:37:12,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5290 states to 5290 states and 17925 transitions. [2021-08-21 13:37:12,238 INFO L78 Accepts]: Start accepts. Automaton has 5290 states and 17925 transitions. Word has length 39 [2021-08-21 13:37:12,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:37:12,238 INFO L470 AbstractCegarLoop]: Abstraction has 5290 states and 17925 transitions. [2021-08-21 13:37:12,238 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:37:12,238 INFO L276 IsEmpty]: Start isEmpty. Operand 5290 states and 17925 transitions. [2021-08-21 13:37:12,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:37:12,247 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:37:12,247 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:37:12,247 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable369 [2021-08-21 13:37:12,247 INFO L402 AbstractCegarLoop]: === Iteration 371 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:37:12,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:37:12,247 INFO L82 PathProgramCache]: Analyzing trace with hash -1248265730, now seen corresponding path program 371 times [2021-08-21 13:37:12,247 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:37:12,247 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [956889076] [2021-08-21 13:37:12,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:37:12,247 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:37:12,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:37:12,500 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:37:12,500 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:37:12,500 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [956889076] [2021-08-21 13:37:12,500 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [956889076] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:37:12,500 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:37:12,501 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 13:37:12,501 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552330614] [2021-08-21 13:37:12,501 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 13:37:12,501 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:37:12,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 13:37:12,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-08-21 13:37:12,501 INFO L87 Difference]: Start difference. First operand 5290 states and 17925 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:37:15,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:37:15,277 INFO L93 Difference]: Finished difference Result 8948 states and 30175 transitions. [2021-08-21 13:37:15,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2021-08-21 13:37:15,278 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:37:15,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:37:15,299 INFO L225 Difference]: With dead ends: 8948 [2021-08-21 13:37:15,299 INFO L226 Difference]: Without dead ends: 8896 [2021-08-21 13:37:15,300 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2071 ImplicationChecksByTransitivity, 1630.5ms TimeCoverageRelationStatistics Valid=513, Invalid=6293, Unknown=0, NotChecked=0, Total=6806 [2021-08-21 13:37:15,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8896 states. [2021-08-21 13:37:15,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8896 to 5264. [2021-08-21 13:37:15,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5264 states, 5263 states have (on average 3.3900817024510737) internal successors, (17842), 5263 states have internal predecessors, (17842), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:37:15,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5264 states to 5264 states and 17842 transitions. [2021-08-21 13:37:15,412 INFO L78 Accepts]: Start accepts. Automaton has 5264 states and 17842 transitions. Word has length 39 [2021-08-21 13:37:15,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:37:15,412 INFO L470 AbstractCegarLoop]: Abstraction has 5264 states and 17842 transitions. [2021-08-21 13:37:15,412 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:37:15,412 INFO L276 IsEmpty]: Start isEmpty. Operand 5264 states and 17842 transitions. [2021-08-21 13:37:15,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:37:15,420 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:37:15,420 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:37:15,420 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable370 [2021-08-21 13:37:15,420 INFO L402 AbstractCegarLoop]: === Iteration 372 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:37:15,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:37:15,420 INFO L82 PathProgramCache]: Analyzing trace with hash 1450816142, now seen corresponding path program 372 times [2021-08-21 13:37:15,420 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:37:15,420 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1742278455] [2021-08-21 13:37:15,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:37:15,421 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:37:15,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:37:15,839 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:37:15,839 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:37:15,839 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1742278455] [2021-08-21 13:37:15,840 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1742278455] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:37:15,840 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:37:15,840 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 13:37:15,840 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016373168] [2021-08-21 13:37:15,840 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 13:37:15,840 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:37:15,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 13:37:15,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-08-21 13:37:15,840 INFO L87 Difference]: Start difference. First operand 5264 states and 17842 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:37:17,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:37:17,409 INFO L93 Difference]: Finished difference Result 7462 states and 24986 transitions. [2021-08-21 13:37:17,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2021-08-21 13:37:17,409 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:37:17,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:37:17,424 INFO L225 Difference]: With dead ends: 7462 [2021-08-21 13:37:17,424 INFO L226 Difference]: Without dead ends: 7407 [2021-08-21 13:37:17,424 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 646 ImplicationChecksByTransitivity, 905.9ms TimeCoverageRelationStatistics Valid=266, Invalid=2596, Unknown=0, NotChecked=0, Total=2862 [2021-08-21 13:37:17,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7407 states. [2021-08-21 13:37:17,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7407 to 5290. [2021-08-21 13:37:17,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5290 states, 5289 states have (on average 3.390432974097183) internal successors, (17932), 5289 states have internal predecessors, (17932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:37:17,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5290 states to 5290 states and 17932 transitions. [2021-08-21 13:37:17,509 INFO L78 Accepts]: Start accepts. Automaton has 5290 states and 17932 transitions. Word has length 39 [2021-08-21 13:37:17,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:37:17,509 INFO L470 AbstractCegarLoop]: Abstraction has 5290 states and 17932 transitions. [2021-08-21 13:37:17,509 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:37:17,509 INFO L276 IsEmpty]: Start isEmpty. Operand 5290 states and 17932 transitions. [2021-08-21 13:37:17,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:37:17,517 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:37:17,517 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:37:17,517 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable371 [2021-08-21 13:37:17,517 INFO L402 AbstractCegarLoop]: === Iteration 373 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:37:17,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:37:17,517 INFO L82 PathProgramCache]: Analyzing trace with hash -1671498932, now seen corresponding path program 373 times [2021-08-21 13:37:17,518 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:37:17,518 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1544289929] [2021-08-21 13:37:17,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:37:17,518 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:37:17,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:37:17,711 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:37:17,712 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:37:17,712 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1544289929] [2021-08-21 13:37:17,712 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1544289929] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:37:17,712 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:37:17,712 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 13:37:17,712 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982745994] [2021-08-21 13:37:17,712 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 13:37:17,712 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:37:17,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 13:37:17,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-08-21 13:37:17,713 INFO L87 Difference]: Start difference. First operand 5290 states and 17932 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:37:19,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:37:19,247 INFO L93 Difference]: Finished difference Result 8195 states and 27530 transitions. [2021-08-21 13:37:19,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2021-08-21 13:37:19,248 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:37:19,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:37:19,269 INFO L225 Difference]: With dead ends: 8195 [2021-08-21 13:37:19,269 INFO L226 Difference]: Without dead ends: 8135 [2021-08-21 13:37:19,270 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1085 ImplicationChecksByTransitivity, 824.2ms TimeCoverageRelationStatistics Valid=357, Invalid=3803, Unknown=0, NotChecked=0, Total=4160 [2021-08-21 13:37:19,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8135 states. [2021-08-21 13:37:19,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8135 to 5288. [2021-08-21 13:37:19,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5288 states, 5287 states have (on average 3.3907698127482506) internal successors, (17927), 5287 states have internal predecessors, (17927), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:37:19,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5288 states to 5288 states and 17927 transitions. [2021-08-21 13:37:19,392 INFO L78 Accepts]: Start accepts. Automaton has 5288 states and 17927 transitions. Word has length 39 [2021-08-21 13:37:19,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:37:19,393 INFO L470 AbstractCegarLoop]: Abstraction has 5288 states and 17927 transitions. [2021-08-21 13:37:19,393 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:37:19,393 INFO L276 IsEmpty]: Start isEmpty. Operand 5288 states and 17927 transitions. [2021-08-21 13:37:19,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:37:19,402 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:37:19,402 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:37:19,402 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable372 [2021-08-21 13:37:19,402 INFO L402 AbstractCegarLoop]: === Iteration 374 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:37:19,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:37:19,402 INFO L82 PathProgramCache]: Analyzing trace with hash 746064762, now seen corresponding path program 374 times [2021-08-21 13:37:19,402 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:37:19,402 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [750588534] [2021-08-21 13:37:19,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:37:19,402 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:37:19,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:37:19,624 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:37:19,624 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:37:19,624 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [750588534] [2021-08-21 13:37:19,625 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [750588534] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:37:19,625 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:37:19,625 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 13:37:19,625 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928058660] [2021-08-21 13:37:19,625 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 13:37:19,625 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:37:19,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 13:37:19,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-08-21 13:37:19,625 INFO L87 Difference]: Start difference. First operand 5288 states and 17927 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:37:20,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:37:20,847 INFO L93 Difference]: Finished difference Result 7383 states and 24812 transitions. [2021-08-21 13:37:20,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-08-21 13:37:20,848 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:37:20,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:37:20,876 INFO L225 Difference]: With dead ends: 7383 [2021-08-21 13:37:20,876 INFO L226 Difference]: Without dead ends: 7292 [2021-08-21 13:37:20,877 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 574 ImplicationChecksByTransitivity, 634.0ms TimeCoverageRelationStatistics Valid=238, Invalid=2414, Unknown=0, NotChecked=0, Total=2652 [2021-08-21 13:37:20,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7292 states. [2021-08-21 13:37:20,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7292 to 5288. [2021-08-21 13:37:20,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5288 states, 5287 states have (on average 3.3896349536599204) internal successors, (17921), 5287 states have internal predecessors, (17921), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:37:20,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5288 states to 5288 states and 17921 transitions. [2021-08-21 13:37:20,991 INFO L78 Accepts]: Start accepts. Automaton has 5288 states and 17921 transitions. Word has length 39 [2021-08-21 13:37:20,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:37:20,992 INFO L470 AbstractCegarLoop]: Abstraction has 5288 states and 17921 transitions. [2021-08-21 13:37:20,992 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:37:20,992 INFO L276 IsEmpty]: Start isEmpty. Operand 5288 states and 17921 transitions. [2021-08-21 13:37:21,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:37:21,000 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:37:21,000 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:37:21,001 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable373 [2021-08-21 13:37:21,001 INFO L402 AbstractCegarLoop]: === Iteration 375 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:37:21,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:37:21,001 INFO L82 PathProgramCache]: Analyzing trace with hash -756417444, now seen corresponding path program 375 times [2021-08-21 13:37:21,001 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:37:21,001 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1294514483] [2021-08-21 13:37:21,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:37:21,001 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:37:21,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:37:21,248 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:37:21,249 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:37:21,249 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1294514483] [2021-08-21 13:37:21,249 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1294514483] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:37:21,249 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:37:21,249 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 13:37:21,249 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1767654663] [2021-08-21 13:37:21,249 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 13:37:21,249 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:37:21,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 13:37:21,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-08-21 13:37:21,250 INFO L87 Difference]: Start difference. First operand 5288 states and 17921 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:37:23,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:37:23,473 INFO L93 Difference]: Finished difference Result 8285 states and 27895 transitions. [2021-08-21 13:37:23,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2021-08-21 13:37:23,473 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:37:23,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:37:23,493 INFO L225 Difference]: With dead ends: 8285 [2021-08-21 13:37:23,493 INFO L226 Difference]: Without dead ends: 8185 [2021-08-21 13:37:23,493 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1127 ImplicationChecksByTransitivity, 1127.5ms TimeCoverageRelationStatistics Valid=367, Invalid=3923, Unknown=0, NotChecked=0, Total=4290 [2021-08-21 13:37:23,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8185 states. [2021-08-21 13:37:23,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8185 to 5282. [2021-08-21 13:37:23,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5282 states, 5281 states have (on average 3.389888278735088) internal successors, (17902), 5281 states have internal predecessors, (17902), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:37:23,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5282 states to 5282 states and 17902 transitions. [2021-08-21 13:37:23,612 INFO L78 Accepts]: Start accepts. Automaton has 5282 states and 17902 transitions. Word has length 39 [2021-08-21 13:37:23,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:37:23,612 INFO L470 AbstractCegarLoop]: Abstraction has 5282 states and 17902 transitions. [2021-08-21 13:37:23,612 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:37:23,612 INFO L276 IsEmpty]: Start isEmpty. Operand 5282 states and 17902 transitions. [2021-08-21 13:37:23,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:37:23,621 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:37:23,621 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:37:23,621 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable374 [2021-08-21 13:37:23,621 INFO L402 AbstractCegarLoop]: === Iteration 376 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:37:23,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:37:23,622 INFO L82 PathProgramCache]: Analyzing trace with hash -993042440, now seen corresponding path program 376 times [2021-08-21 13:37:23,622 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:37:23,622 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [739431384] [2021-08-21 13:37:23,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:37:23,622 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:37:23,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:37:23,896 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:37:23,896 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:37:23,896 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [739431384] [2021-08-21 13:37:23,896 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [739431384] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:37:23,896 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:37:23,896 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-08-21 13:37:23,896 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137135082] [2021-08-21 13:37:23,896 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-08-21 13:37:23,896 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:37:23,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-08-21 13:37:23,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-08-21 13:37:23,897 INFO L87 Difference]: Start difference. First operand 5282 states and 17902 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:37:25,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:37:25,126 INFO L93 Difference]: Finished difference Result 5634 states and 18942 transitions. [2021-08-21 13:37:25,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-08-21 13:37:25,126 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:37:25,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:37:25,140 INFO L225 Difference]: With dead ends: 5634 [2021-08-21 13:37:25,140 INFO L226 Difference]: Without dead ends: 5558 [2021-08-21 13:37:25,140 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 395 ImplicationChecksByTransitivity, 740.4ms TimeCoverageRelationStatistics Valid=189, Invalid=1791, Unknown=0, NotChecked=0, Total=1980 [2021-08-21 13:37:25,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5558 states. [2021-08-21 13:37:25,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5558 to 5326. [2021-08-21 13:37:25,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5326 states, 5325 states have (on average 3.3862910798122066) internal successors, (18032), 5325 states have internal predecessors, (18032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:37:25,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5326 states to 5326 states and 18032 transitions. [2021-08-21 13:37:25,241 INFO L78 Accepts]: Start accepts. Automaton has 5326 states and 18032 transitions. Word has length 39 [2021-08-21 13:37:25,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:37:25,241 INFO L470 AbstractCegarLoop]: Abstraction has 5326 states and 18032 transitions. [2021-08-21 13:37:25,241 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:37:25,241 INFO L276 IsEmpty]: Start isEmpty. Operand 5326 states and 18032 transitions. [2021-08-21 13:37:25,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:37:25,251 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:37:25,252 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:37:25,252 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable375 [2021-08-21 13:37:25,252 INFO L402 AbstractCegarLoop]: === Iteration 377 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:37:25,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:37:25,252 INFO L82 PathProgramCache]: Analyzing trace with hash -2011096052, now seen corresponding path program 377 times [2021-08-21 13:37:25,252 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:37:25,252 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1535671554] [2021-08-21 13:37:25,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:37:25,252 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:37:25,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:37:25,545 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:37:25,545 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:37:25,545 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1535671554] [2021-08-21 13:37:25,545 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1535671554] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:37:25,545 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:37:25,595 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 13:37:25,595 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134039399] [2021-08-21 13:37:25,595 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 13:37:25,595 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:37:25,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 13:37:25,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-08-21 13:37:25,595 INFO L87 Difference]: Start difference. First operand 5326 states and 18032 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:37:26,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:37:26,831 INFO L93 Difference]: Finished difference Result 5616 states and 18888 transitions. [2021-08-21 13:37:26,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-08-21 13:37:26,832 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:37:26,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:37:26,844 INFO L225 Difference]: With dead ends: 5616 [2021-08-21 13:37:26,844 INFO L226 Difference]: Without dead ends: 5550 [2021-08-21 13:37:26,844 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 453 ImplicationChecksByTransitivity, 766.8ms TimeCoverageRelationStatistics Valid=207, Invalid=2049, Unknown=0, NotChecked=0, Total=2256 [2021-08-21 13:37:26,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5550 states. [2021-08-21 13:37:26,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5550 to 5318. [2021-08-21 13:37:26,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5318 states, 5317 states have (on average 3.386872296407749) internal successors, (18008), 5317 states have internal predecessors, (18008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:37:26,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5318 states to 5318 states and 18008 transitions. [2021-08-21 13:37:26,918 INFO L78 Accepts]: Start accepts. Automaton has 5318 states and 18008 transitions. Word has length 39 [2021-08-21 13:37:26,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:37:26,918 INFO L470 AbstractCegarLoop]: Abstraction has 5318 states and 18008 transitions. [2021-08-21 13:37:26,918 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:37:26,919 INFO L276 IsEmpty]: Start isEmpty. Operand 5318 states and 18008 transitions. [2021-08-21 13:37:26,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:37:26,926 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:37:26,926 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:37:26,926 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable376 [2021-08-21 13:37:26,926 INFO L402 AbstractCegarLoop]: === Iteration 378 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:37:26,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:37:26,926 INFO L82 PathProgramCache]: Analyzing trace with hash 2001605590, now seen corresponding path program 378 times [2021-08-21 13:37:26,926 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:37:26,927 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1908549881] [2021-08-21 13:37:26,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:37:26,927 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:37:26,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:37:27,216 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:37:27,216 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:37:27,216 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1908549881] [2021-08-21 13:37:27,216 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1908549881] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:37:27,217 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:37:27,217 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 13:37:27,217 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600037765] [2021-08-21 13:37:27,217 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 13:37:27,217 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:37:27,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 13:37:27,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-08-21 13:37:27,217 INFO L87 Difference]: Start difference. First operand 5318 states and 18008 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:37:28,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:37:28,426 INFO L93 Difference]: Finished difference Result 5629 states and 18921 transitions. [2021-08-21 13:37:28,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-08-21 13:37:28,426 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:37:28,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:37:28,438 INFO L225 Difference]: With dead ends: 5629 [2021-08-21 13:37:28,438 INFO L226 Difference]: Without dead ends: 5499 [2021-08-21 13:37:28,439 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 422 ImplicationChecksByTransitivity, 751.1ms TimeCoverageRelationStatistics Valid=201, Invalid=1961, Unknown=0, NotChecked=0, Total=2162 [2021-08-21 13:37:28,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5499 states. [2021-08-21 13:37:28,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5499 to 5282. [2021-08-21 13:37:28,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5282 states, 5281 states have (on average 3.3883734141261126) internal successors, (17894), 5281 states have internal predecessors, (17894), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:37:28,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5282 states to 5282 states and 17894 transitions. [2021-08-21 13:37:28,512 INFO L78 Accepts]: Start accepts. Automaton has 5282 states and 17894 transitions. Word has length 39 [2021-08-21 13:37:28,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:37:28,512 INFO L470 AbstractCegarLoop]: Abstraction has 5282 states and 17894 transitions. [2021-08-21 13:37:28,512 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:37:28,512 INFO L276 IsEmpty]: Start isEmpty. Operand 5282 states and 17894 transitions. [2021-08-21 13:37:28,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:37:28,519 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:37:28,519 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:37:28,519 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable377 [2021-08-21 13:37:28,519 INFO L402 AbstractCegarLoop]: === Iteration 379 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:37:28,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:37:28,519 INFO L82 PathProgramCache]: Analyzing trace with hash -1245843900, now seen corresponding path program 379 times [2021-08-21 13:37:28,519 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:37:28,519 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1493003780] [2021-08-21 13:37:28,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:37:28,519 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:37:28,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:37:28,852 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:37:28,852 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:37:28,852 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1493003780] [2021-08-21 13:37:28,852 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1493003780] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:37:28,852 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:37:28,852 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 13:37:28,852 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457711618] [2021-08-21 13:37:28,852 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 13:37:28,852 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:37:28,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 13:37:28,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-08-21 13:37:28,853 INFO L87 Difference]: Start difference. First operand 5282 states and 17894 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:37:30,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:37:30,920 INFO L93 Difference]: Finished difference Result 5884 states and 19567 transitions. [2021-08-21 13:37:30,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2021-08-21 13:37:30,920 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:37:30,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:37:30,934 INFO L225 Difference]: With dead ends: 5884 [2021-08-21 13:37:30,934 INFO L226 Difference]: Without dead ends: 5820 [2021-08-21 13:37:30,935 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1391 ImplicationChecksByTransitivity, 1430.8ms TimeCoverageRelationStatistics Valid=416, Invalid=4554, Unknown=0, NotChecked=0, Total=4970 [2021-08-21 13:37:30,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5820 states. [2021-08-21 13:37:31,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5820 to 5292. [2021-08-21 13:37:31,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5292 states, 5291 states have (on average 3.3883953883953883) internal successors, (17928), 5291 states have internal predecessors, (17928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:37:31,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5292 states to 5292 states and 17928 transitions. [2021-08-21 13:37:31,028 INFO L78 Accepts]: Start accepts. Automaton has 5292 states and 17928 transitions. Word has length 39 [2021-08-21 13:37:31,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:37:31,028 INFO L470 AbstractCegarLoop]: Abstraction has 5292 states and 17928 transitions. [2021-08-21 13:37:31,028 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:37:31,029 INFO L276 IsEmpty]: Start isEmpty. Operand 5292 states and 17928 transitions. [2021-08-21 13:37:31,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:37:31,037 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:37:31,037 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:37:31,037 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable378 [2021-08-21 13:37:31,037 INFO L402 AbstractCegarLoop]: === Iteration 380 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:37:31,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:37:31,037 INFO L82 PathProgramCache]: Analyzing trace with hash -327360330, now seen corresponding path program 380 times [2021-08-21 13:37:31,038 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:37:31,038 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2051225712] [2021-08-21 13:37:31,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:37:31,038 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:37:31,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:37:31,278 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:37:31,278 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:37:31,278 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2051225712] [2021-08-21 13:37:31,278 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2051225712] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:37:31,278 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:37:31,278 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 13:37:31,278 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702761117] [2021-08-21 13:37:31,279 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 13:37:31,279 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:37:31,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 13:37:31,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-08-21 13:37:31,279 INFO L87 Difference]: Start difference. First operand 5292 states and 17928 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:37:32,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:37:32,581 INFO L93 Difference]: Finished difference Result 5732 states and 19160 transitions. [2021-08-21 13:37:32,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-08-21 13:37:32,582 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:37:32,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:37:32,594 INFO L225 Difference]: With dead ends: 5732 [2021-08-21 13:37:32,595 INFO L226 Difference]: Without dead ends: 5689 [2021-08-21 13:37:32,595 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 614 ImplicationChecksByTransitivity, 765.3ms TimeCoverageRelationStatistics Valid=261, Invalid=2495, Unknown=0, NotChecked=0, Total=2756 [2021-08-21 13:37:32,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5689 states. [2021-08-21 13:37:32,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5689 to 5298. [2021-08-21 13:37:32,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5298 states, 5297 states have (on average 3.387011515952426) internal successors, (17941), 5297 states have internal predecessors, (17941), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:37:32,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5298 states to 5298 states and 17941 transitions. [2021-08-21 13:37:32,684 INFO L78 Accepts]: Start accepts. Automaton has 5298 states and 17941 transitions. Word has length 39 [2021-08-21 13:37:32,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:37:32,684 INFO L470 AbstractCegarLoop]: Abstraction has 5298 states and 17941 transitions. [2021-08-21 13:37:32,684 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:37:32,684 INFO L276 IsEmpty]: Start isEmpty. Operand 5298 states and 17941 transitions. [2021-08-21 13:37:32,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:37:32,693 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:37:32,693 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:37:32,693 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable379 [2021-08-21 13:37:32,693 INFO L402 AbstractCegarLoop]: === Iteration 381 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:37:32,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:37:32,693 INFO L82 PathProgramCache]: Analyzing trace with hash -307211596, now seen corresponding path program 381 times [2021-08-21 13:37:32,693 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:37:32,693 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1179231409] [2021-08-21 13:37:32,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:37:32,694 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:37:32,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:37:32,942 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:37:32,942 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:37:32,942 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1179231409] [2021-08-21 13:37:32,942 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1179231409] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:37:32,942 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:37:32,942 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 13:37:32,942 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2038070958] [2021-08-21 13:37:32,942 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 13:37:32,942 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:37:32,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 13:37:32,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-08-21 13:37:32,943 INFO L87 Difference]: Start difference. First operand 5298 states and 17941 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:37:34,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:37:34,042 INFO L93 Difference]: Finished difference Result 5695 states and 19078 transitions. [2021-08-21 13:37:34,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-08-21 13:37:34,042 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:37:34,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:37:34,056 INFO L225 Difference]: With dead ends: 5695 [2021-08-21 13:37:34,056 INFO L226 Difference]: Without dead ends: 5652 [2021-08-21 13:37:34,056 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 614 ImplicationChecksByTransitivity, 703.8ms TimeCoverageRelationStatistics Valid=264, Invalid=2492, Unknown=0, NotChecked=0, Total=2756 [2021-08-21 13:37:34,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5652 states. [2021-08-21 13:37:34,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5652 to 5294. [2021-08-21 13:37:34,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5294 states, 5293 states have (on average 3.387681843944833) internal successors, (17931), 5293 states have internal predecessors, (17931), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:37:34,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5294 states to 5294 states and 17931 transitions. [2021-08-21 13:37:34,152 INFO L78 Accepts]: Start accepts. Automaton has 5294 states and 17931 transitions. Word has length 39 [2021-08-21 13:37:34,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:37:34,152 INFO L470 AbstractCegarLoop]: Abstraction has 5294 states and 17931 transitions. [2021-08-21 13:37:34,152 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:37:34,153 INFO L276 IsEmpty]: Start isEmpty. Operand 5294 states and 17931 transitions. [2021-08-21 13:37:34,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:37:34,164 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:37:34,164 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:37:34,164 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable380 [2021-08-21 13:37:34,164 INFO L402 AbstractCegarLoop]: === Iteration 382 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:37:34,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:37:34,164 INFO L82 PathProgramCache]: Analyzing trace with hash 845291892, now seen corresponding path program 382 times [2021-08-21 13:37:34,165 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:37:34,165 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [921491398] [2021-08-21 13:37:34,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:37:34,165 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:37:34,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:37:34,469 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:37:34,470 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:37:34,470 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [921491398] [2021-08-21 13:37:34,470 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [921491398] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:37:34,470 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:37:34,470 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 13:37:34,470 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939445025] [2021-08-21 13:37:34,470 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 13:37:34,470 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:37:34,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 13:37:34,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-08-21 13:37:34,470 INFO L87 Difference]: Start difference. First operand 5294 states and 17931 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:37:35,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:37:35,993 INFO L93 Difference]: Finished difference Result 5736 states and 19182 transitions. [2021-08-21 13:37:35,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-08-21 13:37:35,994 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:37:35,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:37:36,005 INFO L225 Difference]: With dead ends: 5736 [2021-08-21 13:37:36,005 INFO L226 Difference]: Without dead ends: 5676 [2021-08-21 13:37:36,006 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 805 ImplicationChecksByTransitivity, 1016.0ms TimeCoverageRelationStatistics Valid=308, Invalid=2998, Unknown=0, NotChecked=0, Total=3306 [2021-08-21 13:37:36,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5676 states. [2021-08-21 13:37:36,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5676 to 5300. [2021-08-21 13:37:36,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5300 states, 5299 states have (on average 3.387809020569919) internal successors, (17952), 5299 states have internal predecessors, (17952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:37:36,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5300 states to 5300 states and 17952 transitions. [2021-08-21 13:37:36,084 INFO L78 Accepts]: Start accepts. Automaton has 5300 states and 17952 transitions. Word has length 39 [2021-08-21 13:37:36,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:37:36,084 INFO L470 AbstractCegarLoop]: Abstraction has 5300 states and 17952 transitions. [2021-08-21 13:37:36,084 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:37:36,085 INFO L276 IsEmpty]: Start isEmpty. Operand 5300 states and 17952 transitions. [2021-08-21 13:37:36,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:37:36,092 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:37:36,092 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:37:36,092 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable381 [2021-08-21 13:37:36,092 INFO L402 AbstractCegarLoop]: === Iteration 383 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:37:36,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:37:36,093 INFO L82 PathProgramCache]: Analyzing trace with hash -1234274650, now seen corresponding path program 383 times [2021-08-21 13:37:36,093 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:37:36,093 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [79933614] [2021-08-21 13:37:36,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:37:36,097 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:37:36,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:37:36,348 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:37:36,348 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:37:36,348 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [79933614] [2021-08-21 13:37:36,348 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [79933614] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:37:36,349 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:37:36,349 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-08-21 13:37:36,349 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534085080] [2021-08-21 13:37:36,349 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-08-21 13:37:36,349 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:37:36,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-08-21 13:37:36,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-08-21 13:37:36,349 INFO L87 Difference]: Start difference. First operand 5300 states and 17952 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:37:37,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:37:37,797 INFO L93 Difference]: Finished difference Result 5707 states and 19123 transitions. [2021-08-21 13:37:37,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-08-21 13:37:37,798 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:37:37,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:37:37,808 INFO L225 Difference]: With dead ends: 5707 [2021-08-21 13:37:37,808 INFO L226 Difference]: Without dead ends: 5631 [2021-08-21 13:37:37,809 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 651 ImplicationChecksByTransitivity, 929.5ms TimeCoverageRelationStatistics Valid=260, Invalid=2496, Unknown=0, NotChecked=0, Total=2756 [2021-08-21 13:37:37,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5631 states. [2021-08-21 13:37:37,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5631 to 5312. [2021-08-21 13:37:37,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5312 states, 5311 states have (on average 3.384673319525513) internal successors, (17976), 5311 states have internal predecessors, (17976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:37:37,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5312 states to 5312 states and 17976 transitions. [2021-08-21 13:37:37,879 INFO L78 Accepts]: Start accepts. Automaton has 5312 states and 17976 transitions. Word has length 39 [2021-08-21 13:37:37,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:37:37,879 INFO L470 AbstractCegarLoop]: Abstraction has 5312 states and 17976 transitions. [2021-08-21 13:37:37,879 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:37:37,879 INFO L276 IsEmpty]: Start isEmpty. Operand 5312 states and 17976 transitions. [2021-08-21 13:37:37,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:37:37,886 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:37:37,886 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:37:37,886 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable382 [2021-08-21 13:37:37,887 INFO L402 AbstractCegarLoop]: === Iteration 384 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:37:37,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:37:37,887 INFO L82 PathProgramCache]: Analyzing trace with hash 2042639034, now seen corresponding path program 384 times [2021-08-21 13:37:37,887 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:37:37,887 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [375278791] [2021-08-21 13:37:37,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:37:37,887 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:37:37,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:37:38,172 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:37:38,173 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:37:38,173 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [375278791] [2021-08-21 13:37:38,173 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [375278791] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:37:38,173 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:37:38,173 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 13:37:38,173 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [545810372] [2021-08-21 13:37:38,173 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 13:37:38,173 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:37:38,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 13:37:38,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-08-21 13:37:38,173 INFO L87 Difference]: Start difference. First operand 5312 states and 17976 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:37:39,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:37:39,423 INFO L93 Difference]: Finished difference Result 5689 states and 19069 transitions. [2021-08-21 13:37:39,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-08-21 13:37:39,424 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:37:39,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:37:39,437 INFO L225 Difference]: With dead ends: 5689 [2021-08-21 13:37:39,437 INFO L226 Difference]: Without dead ends: 5619 [2021-08-21 13:37:39,438 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 724 ImplicationChecksByTransitivity, 812.4ms TimeCoverageRelationStatistics Valid=280, Invalid=2800, Unknown=0, NotChecked=0, Total=3080 [2021-08-21 13:37:39,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5619 states. [2021-08-21 13:37:39,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5619 to 5300. [2021-08-21 13:37:39,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5300 states, 5299 states have (on average 3.386676731458766) internal successors, (17946), 5299 states have internal predecessors, (17946), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:37:39,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5300 states to 5300 states and 17946 transitions. [2021-08-21 13:37:39,514 INFO L78 Accepts]: Start accepts. Automaton has 5300 states and 17946 transitions. Word has length 39 [2021-08-21 13:37:39,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:37:39,514 INFO L470 AbstractCegarLoop]: Abstraction has 5300 states and 17946 transitions. [2021-08-21 13:37:39,514 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:37:39,514 INFO L276 IsEmpty]: Start isEmpty. Operand 5300 states and 17946 transitions. [2021-08-21 13:37:39,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:37:39,522 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:37:39,522 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:37:39,522 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable383 [2021-08-21 13:37:39,522 INFO L402 AbstractCegarLoop]: === Iteration 385 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:37:39,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:37:39,522 INFO L82 PathProgramCache]: Analyzing trace with hash -1775940392, now seen corresponding path program 385 times [2021-08-21 13:37:39,522 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:37:39,522 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [17534005] [2021-08-21 13:37:39,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:37:39,523 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:37:39,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:37:39,719 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:37:39,719 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:37:39,719 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [17534005] [2021-08-21 13:37:39,719 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [17534005] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:37:39,719 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:37:39,719 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 13:37:39,719 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671912085] [2021-08-21 13:37:39,720 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 13:37:39,720 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:37:39,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 13:37:39,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-08-21 13:37:39,720 INFO L87 Difference]: Start difference. First operand 5300 states and 17946 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:37:41,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:37:41,159 INFO L93 Difference]: Finished difference Result 5861 states and 19500 transitions. [2021-08-21 13:37:41,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2021-08-21 13:37:41,160 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:37:41,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:37:41,172 INFO L225 Difference]: With dead ends: 5861 [2021-08-21 13:37:41,172 INFO L226 Difference]: Without dead ends: 5797 [2021-08-21 13:37:41,173 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1183 ImplicationChecksByTransitivity, 916.0ms TimeCoverageRelationStatistics Valid=366, Invalid=4056, Unknown=0, NotChecked=0, Total=4422 [2021-08-21 13:37:41,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5797 states. [2021-08-21 13:37:41,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5797 to 5309. [2021-08-21 13:37:41,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5309 states, 5308 states have (on average 3.3854559155990955) internal successors, (17970), 5308 states have internal predecessors, (17970), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:37:41,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5309 states to 5309 states and 17970 transitions. [2021-08-21 13:37:41,251 INFO L78 Accepts]: Start accepts. Automaton has 5309 states and 17970 transitions. Word has length 39 [2021-08-21 13:37:41,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:37:41,251 INFO L470 AbstractCegarLoop]: Abstraction has 5309 states and 17970 transitions. [2021-08-21 13:37:41,252 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:37:41,252 INFO L276 IsEmpty]: Start isEmpty. Operand 5309 states and 17970 transitions. [2021-08-21 13:37:41,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:37:41,259 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:37:41,259 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:37:41,260 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable384 [2021-08-21 13:37:41,260 INFO L402 AbstractCegarLoop]: === Iteration 386 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:37:41,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:37:41,260 INFO L82 PathProgramCache]: Analyzing trace with hash 981607674, now seen corresponding path program 386 times [2021-08-21 13:37:41,260 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:37:41,260 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [161031244] [2021-08-21 13:37:41,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:37:41,260 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:37:41,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:37:41,453 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:37:41,453 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:37:41,453 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [161031244] [2021-08-21 13:37:41,453 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [161031244] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:37:41,453 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:37:41,453 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 13:37:41,453 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361618677] [2021-08-21 13:37:41,454 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 13:37:41,454 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:37:41,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 13:37:41,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-08-21 13:37:41,454 INFO L87 Difference]: Start difference. First operand 5309 states and 17970 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:37:42,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:37:42,357 INFO L93 Difference]: Finished difference Result 5712 states and 19100 transitions. [2021-08-21 13:37:42,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-08-21 13:37:42,357 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:37:42,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:37:42,369 INFO L225 Difference]: With dead ends: 5712 [2021-08-21 13:37:42,369 INFO L226 Difference]: Without dead ends: 5669 [2021-08-21 13:37:42,370 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 511 ImplicationChecksByTransitivity, 537.7ms TimeCoverageRelationStatistics Valid=224, Invalid=2226, Unknown=0, NotChecked=0, Total=2450 [2021-08-21 13:37:42,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5669 states. [2021-08-21 13:37:42,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5669 to 5318. [2021-08-21 13:37:42,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5318 states, 5317 states have (on average 3.3836750047018995) internal successors, (17991), 5317 states have internal predecessors, (17991), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:37:42,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5318 states to 5318 states and 17991 transitions. [2021-08-21 13:37:42,480 INFO L78 Accepts]: Start accepts. Automaton has 5318 states and 17991 transitions. Word has length 39 [2021-08-21 13:37:42,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:37:42,480 INFO L470 AbstractCegarLoop]: Abstraction has 5318 states and 17991 transitions. [2021-08-21 13:37:42,480 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:37:42,480 INFO L276 IsEmpty]: Start isEmpty. Operand 5318 states and 17991 transitions. [2021-08-21 13:37:42,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:37:42,488 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:37:42,488 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:37:42,488 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable385 [2021-08-21 13:37:42,488 INFO L402 AbstractCegarLoop]: === Iteration 387 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:37:42,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:37:42,488 INFO L82 PathProgramCache]: Analyzing trace with hash -1563252486, now seen corresponding path program 387 times [2021-08-21 13:37:42,488 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:37:42,488 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1554014404] [2021-08-21 13:37:42,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:37:42,488 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:37:42,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:37:42,733 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:37:42,733 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:37:42,733 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1554014404] [2021-08-21 13:37:42,733 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1554014404] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:37:42,733 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:37:42,733 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 13:37:42,733 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148169298] [2021-08-21 13:37:42,733 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 13:37:42,734 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:37:42,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 13:37:42,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-08-21 13:37:42,734 INFO L87 Difference]: Start difference. First operand 5318 states and 17991 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:37:44,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:37:44,041 INFO L93 Difference]: Finished difference Result 5681 states and 19033 transitions. [2021-08-21 13:37:44,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-08-21 13:37:44,042 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:37:44,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:37:44,054 INFO L225 Difference]: With dead ends: 5681 [2021-08-21 13:37:44,054 INFO L226 Difference]: Without dead ends: 5630 [2021-08-21 13:37:44,054 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 577 ImplicationChecksByTransitivity, 776.2ms TimeCoverageRelationStatistics Valid=241, Invalid=2411, Unknown=0, NotChecked=0, Total=2652 [2021-08-21 13:37:44,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5630 states. [2021-08-21 13:37:44,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5630 to 5312. [2021-08-21 13:37:44,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5312 states, 5311 states have (on average 3.3844850310675954) internal successors, (17975), 5311 states have internal predecessors, (17975), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:37:44,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5312 states to 5312 states and 17975 transitions. [2021-08-21 13:37:44,129 INFO L78 Accepts]: Start accepts. Automaton has 5312 states and 17975 transitions. Word has length 39 [2021-08-21 13:37:44,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:37:44,129 INFO L470 AbstractCegarLoop]: Abstraction has 5312 states and 17975 transitions. [2021-08-21 13:37:44,129 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:37:44,129 INFO L276 IsEmpty]: Start isEmpty. Operand 5312 states and 17975 transitions. [2021-08-21 13:37:44,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:37:44,138 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:37:44,138 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:37:44,138 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable386 [2021-08-21 13:37:44,139 INFO L402 AbstractCegarLoop]: === Iteration 388 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:37:44,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:37:44,139 INFO L82 PathProgramCache]: Analyzing trace with hash -946034084, now seen corresponding path program 388 times [2021-08-21 13:37:44,139 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:37:44,139 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [430789531] [2021-08-21 13:37:44,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:37:44,139 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:37:44,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:37:44,433 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:37:44,433 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:37:44,433 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [430789531] [2021-08-21 13:37:44,433 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [430789531] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:37:44,433 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:37:44,433 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 13:37:44,433 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1205869013] [2021-08-21 13:37:44,433 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 13:37:44,433 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:37:44,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 13:37:44,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-08-21 13:37:44,434 INFO L87 Difference]: Start difference. First operand 5312 states and 17975 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:37:45,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:37:45,581 INFO L93 Difference]: Finished difference Result 5754 states and 19200 transitions. [2021-08-21 13:37:45,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-08-21 13:37:45,581 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:37:45,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:37:45,595 INFO L225 Difference]: With dead ends: 5754 [2021-08-21 13:37:45,595 INFO L226 Difference]: Without dead ends: 5708 [2021-08-21 13:37:45,595 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 719 ImplicationChecksByTransitivity, 747.4ms TimeCoverageRelationStatistics Valid=275, Invalid=2805, Unknown=0, NotChecked=0, Total=3080 [2021-08-21 13:37:45,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5708 states. [2021-08-21 13:37:45,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5708 to 5319. [2021-08-21 13:37:45,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5319 states, 5318 states have (on average 3.382850695750282) internal successors, (17990), 5318 states have internal predecessors, (17990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:37:45,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5319 states to 5319 states and 17990 transitions. [2021-08-21 13:37:45,691 INFO L78 Accepts]: Start accepts. Automaton has 5319 states and 17990 transitions. Word has length 39 [2021-08-21 13:37:45,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:37:45,691 INFO L470 AbstractCegarLoop]: Abstraction has 5319 states and 17990 transitions. [2021-08-21 13:37:45,691 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:37:45,691 INFO L276 IsEmpty]: Start isEmpty. Operand 5319 states and 17990 transitions. [2021-08-21 13:37:45,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:37:45,700 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:37:45,701 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:37:45,701 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable387 [2021-08-21 13:37:45,701 INFO L402 AbstractCegarLoop]: === Iteration 389 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:37:45,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:37:45,701 INFO L82 PathProgramCache]: Analyzing trace with hash 1913865722, now seen corresponding path program 389 times [2021-08-21 13:37:45,701 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:37:45,701 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1977095945] [2021-08-21 13:37:45,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:37:45,701 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:37:45,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:37:45,895 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:37:45,896 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:37:45,896 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1977095945] [2021-08-21 13:37:45,896 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1977095945] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:37:45,896 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:37:45,896 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 13:37:45,896 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1191002571] [2021-08-21 13:37:45,896 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 13:37:45,896 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:37:45,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 13:37:45,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-08-21 13:37:45,896 INFO L87 Difference]: Start difference. First operand 5319 states and 17990 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:37:46,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:37:46,834 INFO L93 Difference]: Finished difference Result 5689 states and 19047 transitions. [2021-08-21 13:37:46,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-08-21 13:37:46,834 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:37:46,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:37:46,847 INFO L225 Difference]: With dead ends: 5689 [2021-08-21 13:37:46,847 INFO L226 Difference]: Without dead ends: 5634 [2021-08-21 13:37:46,848 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 578 ImplicationChecksByTransitivity, 566.8ms TimeCoverageRelationStatistics Valid=243, Invalid=2409, Unknown=0, NotChecked=0, Total=2652 [2021-08-21 13:37:46,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5634 states. [2021-08-21 13:37:46,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5634 to 5316. [2021-08-21 13:37:46,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5316 states, 5315 states have (on average 3.3832549388523048) internal successors, (17982), 5315 states have internal predecessors, (17982), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:37:46,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5316 states to 5316 states and 17982 transitions. [2021-08-21 13:37:46,950 INFO L78 Accepts]: Start accepts. Automaton has 5316 states and 17982 transitions. Word has length 39 [2021-08-21 13:37:46,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:37:46,950 INFO L470 AbstractCegarLoop]: Abstraction has 5316 states and 17982 transitions. [2021-08-21 13:37:46,950 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:37:46,950 INFO L276 IsEmpty]: Start isEmpty. Operand 5316 states and 17982 transitions. [2021-08-21 13:37:46,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:37:46,959 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:37:46,959 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:37:46,959 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable388 [2021-08-21 13:37:46,959 INFO L402 AbstractCegarLoop]: === Iteration 390 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:37:46,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:37:46,960 INFO L82 PathProgramCache]: Analyzing trace with hash 1333249012, now seen corresponding path program 390 times [2021-08-21 13:37:46,960 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:37:46,960 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1480461555] [2021-08-21 13:37:46,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:37:46,960 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:37:46,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:37:47,151 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:37:47,152 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:37:47,152 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1480461555] [2021-08-21 13:37:47,152 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1480461555] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:37:47,152 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:37:47,152 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-08-21 13:37:47,152 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [771908461] [2021-08-21 13:37:47,152 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-08-21 13:37:47,152 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:37:47,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-08-21 13:37:47,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-08-21 13:37:47,152 INFO L87 Difference]: Start difference. First operand 5316 states and 17982 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:37:48,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:37:48,464 INFO L93 Difference]: Finished difference Result 5650 states and 18957 transitions. [2021-08-21 13:37:48,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-08-21 13:37:48,464 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:37:48,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:37:48,477 INFO L225 Difference]: With dead ends: 5650 [2021-08-21 13:37:48,477 INFO L226 Difference]: Without dead ends: 5574 [2021-08-21 13:37:48,477 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 610 ImplicationChecksByTransitivity, 777.6ms TimeCoverageRelationStatistics Valid=249, Invalid=2403, Unknown=0, NotChecked=0, Total=2652 [2021-08-21 13:37:48,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5574 states. [2021-08-21 13:37:48,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5574 to 5330. [2021-08-21 13:37:48,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5330 states, 5329 states have (on average 3.3799962469506473) internal successors, (18012), 5329 states have internal predecessors, (18012), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:37:48,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5330 states to 5330 states and 18012 transitions. [2021-08-21 13:37:48,568 INFO L78 Accepts]: Start accepts. Automaton has 5330 states and 18012 transitions. Word has length 39 [2021-08-21 13:37:48,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:37:48,568 INFO L470 AbstractCegarLoop]: Abstraction has 5330 states and 18012 transitions. [2021-08-21 13:37:48,568 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:37:48,568 INFO L276 IsEmpty]: Start isEmpty. Operand 5330 states and 18012 transitions. [2021-08-21 13:37:48,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:37:48,577 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:37:48,577 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:37:48,577 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable389 [2021-08-21 13:37:48,577 INFO L402 AbstractCegarLoop]: === Iteration 391 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:37:48,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:37:48,577 INFO L82 PathProgramCache]: Analyzing trace with hash -214673322, now seen corresponding path program 391 times [2021-08-21 13:37:48,578 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:37:48,578 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [739221580] [2021-08-21 13:37:48,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:37:48,578 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:37:48,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:37:48,873 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:37:48,873 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:37:48,874 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [739221580] [2021-08-21 13:37:48,874 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [739221580] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:37:48,874 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:37:48,874 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 13:37:48,874 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676657028] [2021-08-21 13:37:48,874 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 13:37:48,874 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:37:48,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 13:37:48,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-08-21 13:37:48,874 INFO L87 Difference]: Start difference. First operand 5330 states and 18012 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:37:50,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:37:50,299 INFO L93 Difference]: Finished difference Result 5674 states and 18990 transitions. [2021-08-21 13:37:50,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-08-21 13:37:50,299 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:37:50,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:37:50,312 INFO L225 Difference]: With dead ends: 5674 [2021-08-21 13:37:50,312 INFO L226 Difference]: Without dead ends: 5628 [2021-08-21 13:37:50,312 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 681 ImplicationChecksByTransitivity, 901.5ms TimeCoverageRelationStatistics Valid=267, Invalid=2703, Unknown=0, NotChecked=0, Total=2970 [2021-08-21 13:37:50,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5628 states. [2021-08-21 13:37:50,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5628 to 5330. [2021-08-21 13:37:50,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5330 states, 5329 states have (on average 3.3799962469506473) internal successors, (18012), 5329 states have internal predecessors, (18012), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:37:50,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5330 states to 5330 states and 18012 transitions. [2021-08-21 13:37:50,400 INFO L78 Accepts]: Start accepts. Automaton has 5330 states and 18012 transitions. Word has length 39 [2021-08-21 13:37:50,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:37:50,401 INFO L470 AbstractCegarLoop]: Abstraction has 5330 states and 18012 transitions. [2021-08-21 13:37:50,401 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:37:50,401 INFO L276 IsEmpty]: Start isEmpty. Operand 5330 states and 18012 transitions. [2021-08-21 13:37:50,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:37:50,409 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:37:50,410 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:37:50,410 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable390 [2021-08-21 13:37:50,410 INFO L402 AbstractCegarLoop]: === Iteration 392 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:37:50,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:37:50,410 INFO L82 PathProgramCache]: Analyzing trace with hash -1649740812, now seen corresponding path program 392 times [2021-08-21 13:37:50,410 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:37:50,410 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1747244531] [2021-08-21 13:37:50,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:37:50,410 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:37:50,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:37:50,750 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:37:50,751 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:37:50,751 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1747244531] [2021-08-21 13:37:50,751 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1747244531] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:37:50,751 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:37:50,751 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 13:37:50,751 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933911844] [2021-08-21 13:37:50,751 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 13:37:50,751 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:37:50,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 13:37:50,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-08-21 13:37:50,751 INFO L87 Difference]: Start difference. First operand 5330 states and 18012 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:37:52,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:37:52,054 INFO L93 Difference]: Finished difference Result 5602 states and 18822 transitions. [2021-08-21 13:37:52,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-08-21 13:37:52,055 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:37:52,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:37:52,067 INFO L225 Difference]: With dead ends: 5602 [2021-08-21 13:37:52,067 INFO L226 Difference]: Without dead ends: 5530 [2021-08-21 13:37:52,068 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 548 ImplicationChecksByTransitivity, 793.8ms TimeCoverageRelationStatistics Valid=234, Invalid=2316, Unknown=0, NotChecked=0, Total=2550 [2021-08-21 13:37:52,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5530 states. [2021-08-21 13:37:52,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5530 to 5310. [2021-08-21 13:37:52,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5310 states, 5309 states have (on average 3.3834997174609156) internal successors, (17963), 5309 states have internal predecessors, (17963), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:37:52,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5310 states to 5310 states and 17963 transitions. [2021-08-21 13:37:52,148 INFO L78 Accepts]: Start accepts. Automaton has 5310 states and 17963 transitions. Word has length 39 [2021-08-21 13:37:52,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:37:52,148 INFO L470 AbstractCegarLoop]: Abstraction has 5310 states and 17963 transitions. [2021-08-21 13:37:52,148 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:37:52,148 INFO L276 IsEmpty]: Start isEmpty. Operand 5310 states and 17963 transitions. [2021-08-21 13:37:52,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:37:52,156 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:37:52,156 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:37:52,156 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable391 [2021-08-21 13:37:52,156 INFO L402 AbstractCegarLoop]: === Iteration 393 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:37:52,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:37:52,157 INFO L82 PathProgramCache]: Analyzing trace with hash 2100589592, now seen corresponding path program 393 times [2021-08-21 13:37:52,157 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:37:52,157 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [728336349] [2021-08-21 13:37:52,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:37:52,157 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:37:52,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:37:52,444 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:37:52,445 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:37:52,445 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [728336349] [2021-08-21 13:37:52,445 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [728336349] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:37:52,445 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:37:52,445 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 13:37:52,445 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61052447] [2021-08-21 13:37:52,445 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 13:37:52,445 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:37:52,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 13:37:52,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-08-21 13:37:52,445 INFO L87 Difference]: Start difference. First operand 5310 states and 17963 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:37:54,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:37:54,100 INFO L93 Difference]: Finished difference Result 5762 states and 19200 transitions. [2021-08-21 13:37:54,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-08-21 13:37:54,101 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:37:54,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:37:54,112 INFO L225 Difference]: With dead ends: 5762 [2021-08-21 13:37:54,112 INFO L226 Difference]: Without dead ends: 5711 [2021-08-21 13:37:54,112 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 838 ImplicationChecksByTransitivity, 1117.2ms TimeCoverageRelationStatistics Valid=315, Invalid=3107, Unknown=0, NotChecked=0, Total=3422 [2021-08-21 13:37:54,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5711 states. [2021-08-21 13:37:54,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5711 to 5323. [2021-08-21 13:37:54,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5323 states, 5322 states have (on average 3.381999248402856) internal successors, (17999), 5322 states have internal predecessors, (17999), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:37:54,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5323 states to 5323 states and 17999 transitions. [2021-08-21 13:37:54,184 INFO L78 Accepts]: Start accepts. Automaton has 5323 states and 17999 transitions. Word has length 39 [2021-08-21 13:37:54,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:37:54,184 INFO L470 AbstractCegarLoop]: Abstraction has 5323 states and 17999 transitions. [2021-08-21 13:37:54,184 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:37:54,184 INFO L276 IsEmpty]: Start isEmpty. Operand 5323 states and 17999 transitions. [2021-08-21 13:37:54,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:37:54,193 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:37:54,193 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:37:54,193 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable392 [2021-08-21 13:37:54,193 INFO L402 AbstractCegarLoop]: === Iteration 394 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:37:54,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:37:54,193 INFO L82 PathProgramCache]: Analyzing trace with hash 2120738326, now seen corresponding path program 394 times [2021-08-21 13:37:54,193 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:37:54,193 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1313266754] [2021-08-21 13:37:54,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:37:54,193 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:37:54,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:37:54,481 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:37:54,481 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:37:54,481 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1313266754] [2021-08-21 13:37:54,482 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1313266754] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:37:54,482 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:37:54,482 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 13:37:54,482 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693996463] [2021-08-21 13:37:54,482 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 13:37:54,482 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:37:54,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 13:37:54,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-08-21 13:37:54,482 INFO L87 Difference]: Start difference. First operand 5323 states and 17999 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:37:55,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:37:55,966 INFO L93 Difference]: Finished difference Result 5729 states and 19122 transitions. [2021-08-21 13:37:55,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-08-21 13:37:55,966 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:37:55,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:37:55,980 INFO L225 Difference]: With dead ends: 5729 [2021-08-21 13:37:55,980 INFO L226 Difference]: Without dead ends: 5686 [2021-08-21 13:37:55,980 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 722 ImplicationChecksByTransitivity, 985.2ms TimeCoverageRelationStatistics Valid=292, Invalid=2788, Unknown=0, NotChecked=0, Total=3080 [2021-08-21 13:37:55,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5686 states. [2021-08-21 13:37:56,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5686 to 5323. [2021-08-21 13:37:56,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5323 states, 5322 states have (on average 3.3816234498308906) internal successors, (17997), 5322 states have internal predecessors, (17997), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:37:56,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5323 states to 5323 states and 17997 transitions. [2021-08-21 13:37:56,063 INFO L78 Accepts]: Start accepts. Automaton has 5323 states and 17997 transitions. Word has length 39 [2021-08-21 13:37:56,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:37:56,063 INFO L470 AbstractCegarLoop]: Abstraction has 5323 states and 17997 transitions. [2021-08-21 13:37:56,063 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:37:56,063 INFO L276 IsEmpty]: Start isEmpty. Operand 5323 states and 17997 transitions. [2021-08-21 13:37:56,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:37:56,071 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:37:56,071 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:37:56,071 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable393 [2021-08-21 13:37:56,071 INFO L402 AbstractCegarLoop]: === Iteration 395 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:37:56,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:37:56,072 INFO L82 PathProgramCache]: Analyzing trace with hash -1021725482, now seen corresponding path program 395 times [2021-08-21 13:37:56,072 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:37:56,072 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1054413749] [2021-08-21 13:37:56,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:37:56,072 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:37:56,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:37:56,363 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:37:56,363 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:37:56,363 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1054413749] [2021-08-21 13:37:56,363 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1054413749] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:37:56,363 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:37:56,363 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 13:37:56,363 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216535442] [2021-08-21 13:37:56,364 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 13:37:56,364 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:37:56,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 13:37:56,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-08-21 13:37:56,364 INFO L87 Difference]: Start difference. First operand 5323 states and 17997 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:37:58,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:37:58,035 INFO L93 Difference]: Finished difference Result 5794 states and 19270 transitions. [2021-08-21 13:37:58,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2021-08-21 13:37:58,035 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:37:58,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:37:58,049 INFO L225 Difference]: With dead ends: 5794 [2021-08-21 13:37:58,049 INFO L226 Difference]: Without dead ends: 5734 [2021-08-21 13:37:58,049 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 922 ImplicationChecksByTransitivity, 1102.3ms TimeCoverageRelationStatistics Valid=338, Invalid=3322, Unknown=0, NotChecked=0, Total=3660 [2021-08-21 13:37:58,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5734 states. [2021-08-21 13:37:58,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5734 to 5319. [2021-08-21 13:37:58,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5319 states, 5318 states have (on average 3.382098533283189) internal successors, (17986), 5318 states have internal predecessors, (17986), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:37:58,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5319 states to 5319 states and 17986 transitions. [2021-08-21 13:37:58,146 INFO L78 Accepts]: Start accepts. Automaton has 5319 states and 17986 transitions. Word has length 39 [2021-08-21 13:37:58,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:37:58,146 INFO L470 AbstractCegarLoop]: Abstraction has 5319 states and 17986 transitions. [2021-08-21 13:37:58,146 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:37:58,147 INFO L276 IsEmpty]: Start isEmpty. Operand 5319 states and 17986 transitions. [2021-08-21 13:37:58,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:37:58,155 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:37:58,155 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:37:58,155 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable394 [2021-08-21 13:37:58,156 INFO L402 AbstractCegarLoop]: === Iteration 396 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:37:58,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:37:58,156 INFO L82 PathProgramCache]: Analyzing trace with hash -1089470362, now seen corresponding path program 396 times [2021-08-21 13:37:58,156 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:37:58,156 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [150720427] [2021-08-21 13:37:58,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:37:58,156 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:37:58,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:37:58,443 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:37:58,443 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:37:58,443 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [150720427] [2021-08-21 13:37:58,443 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [150720427] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:37:58,443 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:37:58,443 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 13:37:58,443 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125249746] [2021-08-21 13:37:58,443 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 13:37:58,443 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:37:58,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 13:37:58,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-08-21 13:37:58,444 INFO L87 Difference]: Start difference. First operand 5319 states and 17986 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:37:59,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:37:59,628 INFO L93 Difference]: Finished difference Result 5736 states and 19120 transitions. [2021-08-21 13:37:59,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-08-21 13:37:59,628 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:37:59,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:37:59,642 INFO L225 Difference]: With dead ends: 5736 [2021-08-21 13:37:59,642 INFO L226 Difference]: Without dead ends: 5693 [2021-08-21 13:37:59,643 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 686 ImplicationChecksByTransitivity, 751.5ms TimeCoverageRelationStatistics Valid=272, Invalid=2698, Unknown=0, NotChecked=0, Total=2970 [2021-08-21 13:37:59,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5693 states. [2021-08-21 13:37:59,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5693 to 5328. [2021-08-21 13:37:59,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5328 states, 5327 states have (on average 3.3803266378824857) internal successors, (18007), 5327 states have internal predecessors, (18007), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:37:59,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5328 states to 5328 states and 18007 transitions. [2021-08-21 13:37:59,810 INFO L78 Accepts]: Start accepts. Automaton has 5328 states and 18007 transitions. Word has length 39 [2021-08-21 13:37:59,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:37:59,810 INFO L470 AbstractCegarLoop]: Abstraction has 5328 states and 18007 transitions. [2021-08-21 13:37:59,810 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:37:59,810 INFO L276 IsEmpty]: Start isEmpty. Operand 5328 states and 18007 transitions. [2021-08-21 13:37:59,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:37:59,818 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:37:59,818 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:37:59,818 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable395 [2021-08-21 13:37:59,818 INFO L402 AbstractCegarLoop]: === Iteration 397 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:37:59,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:37:59,819 INFO L82 PathProgramCache]: Analyzing trace with hash 660636774, now seen corresponding path program 397 times [2021-08-21 13:37:59,819 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:37:59,819 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1294984564] [2021-08-21 13:37:59,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:37:59,819 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:37:59,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:38:00,018 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:38:00,018 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:38:00,019 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1294984564] [2021-08-21 13:38:00,019 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1294984564] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:38:00,019 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:38:00,019 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 13:38:00,019 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174760179] [2021-08-21 13:38:00,019 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 13:38:00,019 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:38:00,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 13:38:00,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-08-21 13:38:00,019 INFO L87 Difference]: Start difference. First operand 5328 states and 18007 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:38:01,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:38:01,540 INFO L93 Difference]: Finished difference Result 5770 states and 19204 transitions. [2021-08-21 13:38:01,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2021-08-21 13:38:01,540 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:38:01,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:38:01,553 INFO L225 Difference]: With dead ends: 5770 [2021-08-21 13:38:01,553 INFO L226 Difference]: Without dead ends: 5670 [2021-08-21 13:38:01,553 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 762 ImplicationChecksByTransitivity, 885.9ms TimeCoverageRelationStatistics Valid=288, Invalid=2904, Unknown=0, NotChecked=0, Total=3192 [2021-08-21 13:38:01,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5670 states. [2021-08-21 13:38:01,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5670 to 5330. [2021-08-21 13:38:01,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5330 states, 5329 states have (on average 3.3786826796772376) internal successors, (18005), 5329 states have internal predecessors, (18005), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:38:01,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5330 states to 5330 states and 18005 transitions. [2021-08-21 13:38:01,633 INFO L78 Accepts]: Start accepts. Automaton has 5330 states and 18005 transitions. Word has length 39 [2021-08-21 13:38:01,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:38:01,633 INFO L470 AbstractCegarLoop]: Abstraction has 5330 states and 18005 transitions. [2021-08-21 13:38:01,633 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:38:01,633 INFO L276 IsEmpty]: Start isEmpty. Operand 5330 states and 18005 transitions. [2021-08-21 13:38:01,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:38:01,641 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:38:01,642 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:38:01,642 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable396 [2021-08-21 13:38:01,642 INFO L402 AbstractCegarLoop]: === Iteration 398 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:38:01,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:38:01,642 INFO L82 PathProgramCache]: Analyzing trace with hash 1277855176, now seen corresponding path program 398 times [2021-08-21 13:38:01,642 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:38:01,642 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1699749766] [2021-08-21 13:38:01,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:38:01,642 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:38:01,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:38:01,933 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:38:01,934 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:38:01,934 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1699749766] [2021-08-21 13:38:01,934 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1699749766] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:38:01,934 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:38:01,934 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 13:38:01,934 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [874891055] [2021-08-21 13:38:01,934 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 13:38:01,934 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:38:01,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 13:38:01,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-08-21 13:38:01,935 INFO L87 Difference]: Start difference. First operand 5330 states and 18005 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:38:03,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:38:03,456 INFO L93 Difference]: Finished difference Result 5722 states and 19087 transitions. [2021-08-21 13:38:03,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-08-21 13:38:03,456 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:38:03,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:38:03,468 INFO L225 Difference]: With dead ends: 5722 [2021-08-21 13:38:03,469 INFO L226 Difference]: Without dead ends: 5676 [2021-08-21 13:38:03,469 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 802 ImplicationChecksByTransitivity, 1029.9ms TimeCoverageRelationStatistics Valid=301, Invalid=3005, Unknown=0, NotChecked=0, Total=3306 [2021-08-21 13:38:03,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5676 states. [2021-08-21 13:38:03,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5676 to 5328. [2021-08-21 13:38:03,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5328 states, 5327 states have (on average 3.379388023277642) internal successors, (18002), 5327 states have internal predecessors, (18002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:38:03,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5328 states to 5328 states and 18002 transitions. [2021-08-21 13:38:03,556 INFO L78 Accepts]: Start accepts. Automaton has 5328 states and 18002 transitions. Word has length 39 [2021-08-21 13:38:03,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:38:03,556 INFO L470 AbstractCegarLoop]: Abstraction has 5328 states and 18002 transitions. [2021-08-21 13:38:03,556 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:38:03,556 INFO L276 IsEmpty]: Start isEmpty. Operand 5328 states and 18002 transitions. [2021-08-21 13:38:03,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:38:03,564 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:38:03,564 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:38:03,565 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable397 [2021-08-21 13:38:03,565 INFO L402 AbstractCegarLoop]: === Iteration 399 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:38:03,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:38:03,565 INFO L82 PathProgramCache]: Analyzing trace with hash -157212314, now seen corresponding path program 399 times [2021-08-21 13:38:03,565 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:38:03,565 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1543681476] [2021-08-21 13:38:03,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:38:03,565 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:38:03,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:38:03,816 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:38:03,816 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:38:03,816 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1543681476] [2021-08-21 13:38:03,816 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1543681476] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:38:03,816 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:38:03,816 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 13:38:03,816 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240588706] [2021-08-21 13:38:03,816 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 13:38:03,816 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:38:03,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 13:38:03,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-08-21 13:38:03,817 INFO L87 Difference]: Start difference. First operand 5328 states and 18002 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:38:05,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:38:05,219 INFO L93 Difference]: Finished difference Result 5691 states and 19011 transitions. [2021-08-21 13:38:05,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-08-21 13:38:05,219 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:38:05,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:38:05,232 INFO L225 Difference]: With dead ends: 5691 [2021-08-21 13:38:05,232 INFO L226 Difference]: Without dead ends: 5630 [2021-08-21 13:38:05,233 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 650 ImplicationChecksByTransitivity, 870.8ms TimeCoverageRelationStatistics Valid=265, Invalid=2597, Unknown=0, NotChecked=0, Total=2862 [2021-08-21 13:38:05,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5630 states. [2021-08-21 13:38:05,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5630 to 5319. [2021-08-21 13:38:05,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5319 states, 5318 states have (on average 3.38097028958255) internal successors, (17980), 5318 states have internal predecessors, (17980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:38:05,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5319 states to 5319 states and 17980 transitions. [2021-08-21 13:38:05,312 INFO L78 Accepts]: Start accepts. Automaton has 5319 states and 17980 transitions. Word has length 39 [2021-08-21 13:38:05,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:38:05,312 INFO L470 AbstractCegarLoop]: Abstraction has 5319 states and 17980 transitions. [2021-08-21 13:38:05,312 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:38:05,312 INFO L276 IsEmpty]: Start isEmpty. Operand 5319 states and 17980 transitions. [2021-08-21 13:38:05,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:38:05,319 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:38:05,320 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:38:05,320 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable398 [2021-08-21 13:38:05,320 INFO L402 AbstractCegarLoop]: === Iteration 400 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:38:05,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:38:05,320 INFO L82 PathProgramCache]: Analyzing trace with hash -1899265356, now seen corresponding path program 400 times [2021-08-21 13:38:05,320 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:38:05,320 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1707546184] [2021-08-21 13:38:05,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:38:05,320 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:38:05,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:38:05,604 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:38:05,604 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:38:05,604 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1707546184] [2021-08-21 13:38:05,604 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1707546184] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:38:05,604 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:38:05,604 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 13:38:05,604 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645307659] [2021-08-21 13:38:05,604 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 13:38:05,604 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:38:05,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 13:38:05,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-08-21 13:38:05,605 INFO L87 Difference]: Start difference. First operand 5319 states and 17980 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:38:06,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:38:06,955 INFO L93 Difference]: Finished difference Result 5622 states and 18854 transitions. [2021-08-21 13:38:06,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-08-21 13:38:06,956 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:38:06,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:38:06,968 INFO L225 Difference]: With dead ends: 5622 [2021-08-21 13:38:06,969 INFO L226 Difference]: Without dead ends: 5579 [2021-08-21 13:38:06,969 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 511 ImplicationChecksByTransitivity, 821.3ms TimeCoverageRelationStatistics Valid=235, Invalid=2215, Unknown=0, NotChecked=0, Total=2450 [2021-08-21 13:38:06,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5579 states. [2021-08-21 13:38:07,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5579 to 5315. [2021-08-21 13:38:07,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5315 states, 5314 states have (on average 3.3816334211516748) internal successors, (17970), 5314 states have internal predecessors, (17970), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:38:07,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5315 states to 5315 states and 17970 transitions. [2021-08-21 13:38:07,048 INFO L78 Accepts]: Start accepts. Automaton has 5315 states and 17970 transitions. Word has length 39 [2021-08-21 13:38:07,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:38:07,048 INFO L470 AbstractCegarLoop]: Abstraction has 5315 states and 17970 transitions. [2021-08-21 13:38:07,048 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:38:07,048 INFO L276 IsEmpty]: Start isEmpty. Operand 5315 states and 17970 transitions. [2021-08-21 13:38:07,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:38:07,056 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:38:07,056 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:38:07,056 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable399 [2021-08-21 13:38:07,056 INFO L402 AbstractCegarLoop]: === Iteration 401 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:38:07,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:38:07,056 INFO L82 PathProgramCache]: Analyzing trace with hash -1439915432, now seen corresponding path program 401 times [2021-08-21 13:38:07,056 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:38:07,056 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [607419990] [2021-08-21 13:38:07,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:38:07,056 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:38:07,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:38:07,361 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:38:07,361 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:38:07,362 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [607419990] [2021-08-21 13:38:07,362 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [607419990] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:38:07,362 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:38:07,362 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 13:38:07,362 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710430410] [2021-08-21 13:38:07,362 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 13:38:07,362 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:38:07,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 13:38:07,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-08-21 13:38:07,362 INFO L87 Difference]: Start difference. First operand 5315 states and 17970 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:38:08,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:38:08,723 INFO L93 Difference]: Finished difference Result 5624 states and 18861 transitions. [2021-08-21 13:38:08,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-08-21 13:38:08,723 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:38:08,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:38:08,738 INFO L225 Difference]: With dead ends: 5624 [2021-08-21 13:38:08,738 INFO L226 Difference]: Without dead ends: 5573 [2021-08-21 13:38:08,739 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 543 ImplicationChecksByTransitivity, 855.2ms TimeCoverageRelationStatistics Valid=239, Invalid=2311, Unknown=0, NotChecked=0, Total=2550 [2021-08-21 13:38:08,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5573 states. [2021-08-21 13:38:08,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5573 to 5309. [2021-08-21 13:38:08,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5309 states, 5308 states have (on average 3.382629992464205) internal successors, (17955), 5308 states have internal predecessors, (17955), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:38:08,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5309 states to 5309 states and 17955 transitions. [2021-08-21 13:38:08,838 INFO L78 Accepts]: Start accepts. Automaton has 5309 states and 17955 transitions. Word has length 39 [2021-08-21 13:38:08,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:38:08,838 INFO L470 AbstractCegarLoop]: Abstraction has 5309 states and 17955 transitions. [2021-08-21 13:38:08,838 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:38:08,838 INFO L276 IsEmpty]: Start isEmpty. Operand 5309 states and 17955 transitions. [2021-08-21 13:38:08,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:38:08,874 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:38:08,874 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:38:08,874 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable400 [2021-08-21 13:38:08,875 INFO L402 AbstractCegarLoop]: === Iteration 402 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:38:08,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:38:08,875 INFO L82 PathProgramCache]: Analyzing trace with hash -1065582924, now seen corresponding path program 402 times [2021-08-21 13:38:08,875 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:38:08,875 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [94128475] [2021-08-21 13:38:08,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:38:08,875 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:38:08,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:38:09,130 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:38:09,130 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:38:09,130 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [94128475] [2021-08-21 13:38:09,130 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [94128475] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:38:09,130 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:38:09,131 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 13:38:09,131 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1206685333] [2021-08-21 13:38:09,131 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 13:38:09,131 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:38:09,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 13:38:09,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-08-21 13:38:09,131 INFO L87 Difference]: Start difference. First operand 5309 states and 17955 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:38:12,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:38:12,187 INFO L93 Difference]: Finished difference Result 9865 states and 32666 transitions. [2021-08-21 13:38:12,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2021-08-21 13:38:12,188 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:38:12,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:38:12,208 INFO L225 Difference]: With dead ends: 9865 [2021-08-21 13:38:12,209 INFO L226 Difference]: Without dead ends: 9742 [2021-08-21 13:38:12,209 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3079 ImplicationChecksByTransitivity, 1801.7ms TimeCoverageRelationStatistics Valid=742, Invalid=8764, Unknown=0, NotChecked=0, Total=9506 [2021-08-21 13:38:12,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9742 states. [2021-08-21 13:38:12,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9742 to 5434. [2021-08-21 13:38:12,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5434 states, 5433 states have (on average 3.3817412111172462) internal successors, (18373), 5433 states have internal predecessors, (18373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:38:12,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5434 states to 5434 states and 18373 transitions. [2021-08-21 13:38:12,316 INFO L78 Accepts]: Start accepts. Automaton has 5434 states and 18373 transitions. Word has length 39 [2021-08-21 13:38:12,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:38:12,316 INFO L470 AbstractCegarLoop]: Abstraction has 5434 states and 18373 transitions. [2021-08-21 13:38:12,316 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:38:12,316 INFO L276 IsEmpty]: Start isEmpty. Operand 5434 states and 18373 transitions. [2021-08-21 13:38:12,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:38:12,324 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:38:12,324 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:38:12,324 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable401 [2021-08-21 13:38:12,324 INFO L402 AbstractCegarLoop]: === Iteration 403 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:38:12,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:38:12,324 INFO L82 PathProgramCache]: Analyzing trace with hash 1471399958, now seen corresponding path program 403 times [2021-08-21 13:38:12,325 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:38:12,325 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1885331339] [2021-08-21 13:38:12,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:38:12,325 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:38:12,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:38:12,606 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:38:12,607 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:38:12,607 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1885331339] [2021-08-21 13:38:12,607 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1885331339] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:38:12,607 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:38:12,607 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 13:38:12,607 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395519671] [2021-08-21 13:38:12,607 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 13:38:12,607 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:38:12,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 13:38:12,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-08-21 13:38:12,607 INFO L87 Difference]: Start difference. First operand 5434 states and 18373 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:38:16,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:38:16,183 INFO L93 Difference]: Finished difference Result 9720 states and 32238 transitions. [2021-08-21 13:38:16,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2021-08-21 13:38:16,183 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:38:16,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:38:16,211 INFO L225 Difference]: With dead ends: 9720 [2021-08-21 13:38:16,211 INFO L226 Difference]: Without dead ends: 9525 [2021-08-21 13:38:16,212 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2920 ImplicationChecksByTransitivity, 2025.8ms TimeCoverageRelationStatistics Valid=705, Invalid=8415, Unknown=0, NotChecked=0, Total=9120 [2021-08-21 13:38:16,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9525 states. [2021-08-21 13:38:16,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9525 to 5493. [2021-08-21 13:38:16,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5493 states, 5492 states have (on average 3.3818281136198105) internal successors, (18573), 5492 states have internal predecessors, (18573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:38:16,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5493 states to 5493 states and 18573 transitions. [2021-08-21 13:38:16,340 INFO L78 Accepts]: Start accepts. Automaton has 5493 states and 18573 transitions. Word has length 39 [2021-08-21 13:38:16,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:38:16,340 INFO L470 AbstractCegarLoop]: Abstraction has 5493 states and 18573 transitions. [2021-08-21 13:38:16,340 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:38:16,340 INFO L276 IsEmpty]: Start isEmpty. Operand 5493 states and 18573 transitions. [2021-08-21 13:38:16,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:38:16,350 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:38:16,350 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:38:16,350 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable402 [2021-08-21 13:38:16,350 INFO L402 AbstractCegarLoop]: === Iteration 404 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:38:16,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:38:16,350 INFO L82 PathProgramCache]: Analyzing trace with hash -592147604, now seen corresponding path program 404 times [2021-08-21 13:38:16,350 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:38:16,350 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [681180470] [2021-08-21 13:38:16,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:38:16,350 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:38:16,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:38:16,641 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:38:16,641 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:38:16,641 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [681180470] [2021-08-21 13:38:16,641 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [681180470] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:38:16,641 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:38:16,641 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 13:38:16,641 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [102029993] [2021-08-21 13:38:16,641 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 13:38:16,641 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:38:16,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 13:38:16,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-08-21 13:38:16,642 INFO L87 Difference]: Start difference. First operand 5493 states and 18573 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:38:18,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:38:18,218 INFO L93 Difference]: Finished difference Result 7872 states and 26181 transitions. [2021-08-21 13:38:18,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2021-08-21 13:38:18,218 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:38:18,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:38:18,236 INFO L225 Difference]: With dead ends: 7872 [2021-08-21 13:38:18,236 INFO L226 Difference]: Without dead ends: 7754 [2021-08-21 13:38:18,237 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1284 ImplicationChecksByTransitivity, 920.9ms TimeCoverageRelationStatistics Valid=407, Invalid=4285, Unknown=0, NotChecked=0, Total=4692 [2021-08-21 13:38:18,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7754 states. [2021-08-21 13:38:18,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7754 to 5504. [2021-08-21 13:38:18,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5504 states, 5503 states have (on average 3.3816100308922405) internal successors, (18609), 5503 states have internal predecessors, (18609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:38:18,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5504 states to 5504 states and 18609 transitions. [2021-08-21 13:38:18,351 INFO L78 Accepts]: Start accepts. Automaton has 5504 states and 18609 transitions. Word has length 39 [2021-08-21 13:38:18,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:38:18,351 INFO L470 AbstractCegarLoop]: Abstraction has 5504 states and 18609 transitions. [2021-08-21 13:38:18,351 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:38:18,351 INFO L276 IsEmpty]: Start isEmpty. Operand 5504 states and 18609 transitions. [2021-08-21 13:38:18,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:38:18,361 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:38:18,361 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:38:18,361 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable403 [2021-08-21 13:38:18,361 INFO L402 AbstractCegarLoop]: === Iteration 405 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:38:18,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:38:18,361 INFO L82 PathProgramCache]: Analyzing trace with hash 580504618, now seen corresponding path program 405 times [2021-08-21 13:38:18,361 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:38:18,361 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [264403944] [2021-08-21 13:38:18,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:38:18,361 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:38:18,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:38:18,555 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:38:18,555 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:38:18,556 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [264403944] [2021-08-21 13:38:18,556 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [264403944] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:38:18,556 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:38:18,556 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 13:38:18,556 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400761464] [2021-08-21 13:38:18,556 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 13:38:18,556 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:38:18,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 13:38:18,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-08-21 13:38:18,556 INFO L87 Difference]: Start difference. First operand 5504 states and 18609 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:38:20,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:38:20,285 INFO L93 Difference]: Finished difference Result 8538 states and 28553 transitions. [2021-08-21 13:38:20,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2021-08-21 13:38:20,285 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:38:20,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:38:20,307 INFO L225 Difference]: With dead ends: 8538 [2021-08-21 13:38:20,307 INFO L226 Difference]: Without dead ends: 8478 [2021-08-21 13:38:20,309 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1653 ImplicationChecksByTransitivity, 982.6ms TimeCoverageRelationStatistics Valid=469, Invalid=5231, Unknown=0, NotChecked=0, Total=5700 [2021-08-21 13:38:20,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8478 states. [2021-08-21 13:38:20,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8478 to 5502. [2021-08-21 13:38:20,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5502 states, 5501 states have (on average 3.381930558080349) internal successors, (18604), 5501 states have internal predecessors, (18604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:38:20,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5502 states to 5502 states and 18604 transitions. [2021-08-21 13:38:20,463 INFO L78 Accepts]: Start accepts. Automaton has 5502 states and 18604 transitions. Word has length 39 [2021-08-21 13:38:20,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:38:20,463 INFO L470 AbstractCegarLoop]: Abstraction has 5502 states and 18604 transitions. [2021-08-21 13:38:20,463 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:38:20,463 INFO L276 IsEmpty]: Start isEmpty. Operand 5502 states and 18604 transitions. [2021-08-21 13:38:20,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:38:20,473 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:38:20,473 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:38:20,473 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable404 [2021-08-21 13:38:20,474 INFO L402 AbstractCegarLoop]: === Iteration 406 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:38:20,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:38:20,474 INFO L82 PathProgramCache]: Analyzing trace with hash -1296898984, now seen corresponding path program 406 times [2021-08-21 13:38:20,474 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:38:20,474 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2091506133] [2021-08-21 13:38:20,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:38:20,474 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:38:20,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:38:20,669 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:38:20,669 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:38:20,670 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2091506133] [2021-08-21 13:38:20,670 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2091506133] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:38:20,670 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:38:20,670 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 13:38:20,670 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021645492] [2021-08-21 13:38:20,670 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 13:38:20,670 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:38:20,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 13:38:20,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-08-21 13:38:20,670 INFO L87 Difference]: Start difference. First operand 5502 states and 18604 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:38:21,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:38:21,946 INFO L93 Difference]: Finished difference Result 7666 states and 25683 transitions. [2021-08-21 13:38:21,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2021-08-21 13:38:21,947 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:38:21,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:38:21,965 INFO L225 Difference]: With dead ends: 7666 [2021-08-21 13:38:21,966 INFO L226 Difference]: Without dead ends: 7575 [2021-08-21 13:38:21,966 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 870 ImplicationChecksByTransitivity, 691.7ms TimeCoverageRelationStatistics Valid=309, Invalid=3231, Unknown=0, NotChecked=0, Total=3540 [2021-08-21 13:38:21,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7575 states. [2021-08-21 13:38:22,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7575 to 5502. [2021-08-21 13:38:22,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5502 states, 5501 states have (on average 3.380839847300491) internal successors, (18598), 5501 states have internal predecessors, (18598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:38:22,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5502 states to 5502 states and 18598 transitions. [2021-08-21 13:38:22,078 INFO L78 Accepts]: Start accepts. Automaton has 5502 states and 18598 transitions. Word has length 39 [2021-08-21 13:38:22,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:38:22,078 INFO L470 AbstractCegarLoop]: Abstraction has 5502 states and 18598 transitions. [2021-08-21 13:38:22,078 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:38:22,078 INFO L276 IsEmpty]: Start isEmpty. Operand 5502 states and 18598 transitions. [2021-08-21 13:38:22,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:38:22,087 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:38:22,087 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:38:22,087 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable405 [2021-08-21 13:38:22,087 INFO L402 AbstractCegarLoop]: === Iteration 407 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:38:22,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:38:22,087 INFO L82 PathProgramCache]: Analyzing trace with hash 1495586106, now seen corresponding path program 407 times [2021-08-21 13:38:22,087 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:38:22,087 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [85274067] [2021-08-21 13:38:22,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:38:22,088 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:38:22,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:38:22,279 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:38:22,279 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:38:22,279 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [85274067] [2021-08-21 13:38:22,279 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [85274067] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:38:22,279 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:38:22,279 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 13:38:22,279 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374664337] [2021-08-21 13:38:22,279 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 13:38:22,279 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:38:22,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 13:38:22,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-08-21 13:38:22,280 INFO L87 Difference]: Start difference. First operand 5502 states and 18598 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:38:24,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:38:24,456 INFO L93 Difference]: Finished difference Result 8536 states and 28660 transitions. [2021-08-21 13:38:24,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2021-08-21 13:38:24,456 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:38:24,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:38:24,479 INFO L225 Difference]: With dead ends: 8536 [2021-08-21 13:38:24,479 INFO L226 Difference]: Without dead ends: 8436 [2021-08-21 13:38:24,480 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1426 ImplicationChecksByTransitivity, 1164.8ms TimeCoverageRelationStatistics Valid=423, Invalid=4689, Unknown=0, NotChecked=0, Total=5112 [2021-08-21 13:38:24,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8436 states. [2021-08-21 13:38:24,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8436 to 5493. [2021-08-21 13:38:24,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5493 states, 5492 states have (on average 3.3812818645302256) internal successors, (18570), 5492 states have internal predecessors, (18570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:38:24,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5493 states to 5493 states and 18570 transitions. [2021-08-21 13:38:24,606 INFO L78 Accepts]: Start accepts. Automaton has 5493 states and 18570 transitions. Word has length 39 [2021-08-21 13:38:24,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:38:24,606 INFO L470 AbstractCegarLoop]: Abstraction has 5493 states and 18570 transitions. [2021-08-21 13:38:24,606 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:38:24,606 INFO L276 IsEmpty]: Start isEmpty. Operand 5493 states and 18570 transitions. [2021-08-21 13:38:24,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:38:24,616 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:38:24,616 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:38:24,616 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable406 [2021-08-21 13:38:24,616 INFO L402 AbstractCegarLoop]: === Iteration 408 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:38:24,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:38:24,616 INFO L82 PathProgramCache]: Analyzing trace with hash -1624510450, now seen corresponding path program 408 times [2021-08-21 13:38:24,616 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:38:24,616 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [632831506] [2021-08-21 13:38:24,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:38:24,617 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:38:24,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:38:24,902 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:38:24,902 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:38:24,902 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [632831506] [2021-08-21 13:38:24,902 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [632831506] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:38:24,902 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:38:24,902 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 13:38:24,902 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897399720] [2021-08-21 13:38:24,902 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 13:38:24,902 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:38:24,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 13:38:24,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-08-21 13:38:24,903 INFO L87 Difference]: Start difference. First operand 5493 states and 18570 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:38:26,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:38:26,436 INFO L93 Difference]: Finished difference Result 5889 states and 19625 transitions. [2021-08-21 13:38:26,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-08-21 13:38:26,437 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:38:26,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:38:26,449 INFO L225 Difference]: With dead ends: 5889 [2021-08-21 13:38:26,449 INFO L226 Difference]: Without dead ends: 5834 [2021-08-21 13:38:26,450 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 682 ImplicationChecksByTransitivity, 975.3ms TimeCoverageRelationStatistics Valid=279, Invalid=2691, Unknown=0, NotChecked=0, Total=2970 [2021-08-21 13:38:26,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5834 states. [2021-08-21 13:38:26,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5834 to 5511. [2021-08-21 13:38:26,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5511 states, 5510 states have (on average 3.3784029038112524) internal successors, (18615), 5510 states have internal predecessors, (18615), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:38:26,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5511 states to 5511 states and 18615 transitions. [2021-08-21 13:38:26,529 INFO L78 Accepts]: Start accepts. Automaton has 5511 states and 18615 transitions. Word has length 39 [2021-08-21 13:38:26,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:38:26,529 INFO L470 AbstractCegarLoop]: Abstraction has 5511 states and 18615 transitions. [2021-08-21 13:38:26,529 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:38:26,529 INFO L276 IsEmpty]: Start isEmpty. Operand 5511 states and 18615 transitions. [2021-08-21 13:38:26,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:38:26,537 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:38:26,537 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:38:26,537 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable407 [2021-08-21 13:38:26,537 INFO L402 AbstractCegarLoop]: === Iteration 409 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:38:26,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:38:26,538 INFO L82 PathProgramCache]: Analyzing trace with hash -451858228, now seen corresponding path program 409 times [2021-08-21 13:38:26,538 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:38:26,538 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1632611375] [2021-08-21 13:38:26,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:38:26,538 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:38:26,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:38:26,820 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:38:26,821 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:38:26,821 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1632611375] [2021-08-21 13:38:26,821 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1632611375] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:38:26,821 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:38:26,821 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 13:38:26,821 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1358505853] [2021-08-21 13:38:26,821 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 13:38:26,821 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:38:26,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 13:38:26,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-08-21 13:38:26,822 INFO L87 Difference]: Start difference. First operand 5511 states and 18615 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:38:28,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:38:28,192 INFO L93 Difference]: Finished difference Result 5859 states and 19550 transitions. [2021-08-21 13:38:28,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-08-21 13:38:28,192 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:38:28,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:38:28,206 INFO L225 Difference]: With dead ends: 5859 [2021-08-21 13:38:28,206 INFO L226 Difference]: Without dead ends: 5799 [2021-08-21 13:38:28,207 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 607 ImplicationChecksByTransitivity, 936.4ms TimeCoverageRelationStatistics Valid=270, Invalid=2486, Unknown=0, NotChecked=0, Total=2756 [2021-08-21 13:38:28,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5799 states. [2021-08-21 13:38:28,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5799 to 5509. [2021-08-21 13:38:28,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5509 states, 5508 states have (on average 3.378540305010893) internal successors, (18609), 5508 states have internal predecessors, (18609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:38:28,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5509 states to 5509 states and 18609 transitions. [2021-08-21 13:38:28,302 INFO L78 Accepts]: Start accepts. Automaton has 5509 states and 18609 transitions. Word has length 39 [2021-08-21 13:38:28,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:38:28,303 INFO L470 AbstractCegarLoop]: Abstraction has 5509 states and 18609 transitions. [2021-08-21 13:38:28,303 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:38:28,303 INFO L276 IsEmpty]: Start isEmpty. Operand 5509 states and 18609 transitions. [2021-08-21 13:38:28,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:38:28,312 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:38:28,312 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:38:28,312 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable408 [2021-08-21 13:38:28,312 INFO L402 AbstractCegarLoop]: === Iteration 410 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:38:28,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:38:28,312 INFO L82 PathProgramCache]: Analyzing trace with hash -519603108, now seen corresponding path program 410 times [2021-08-21 13:38:28,312 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:38:28,312 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1175180124] [2021-08-21 13:38:28,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:38:28,313 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:38:28,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:38:28,595 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:38:28,595 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:38:28,595 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1175180124] [2021-08-21 13:38:28,595 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1175180124] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:38:28,595 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:38:28,595 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 13:38:28,595 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599011946] [2021-08-21 13:38:28,595 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 13:38:28,595 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:38:28,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 13:38:28,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-08-21 13:38:28,596 INFO L87 Difference]: Start difference. First operand 5509 states and 18609 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:38:29,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:38:29,772 INFO L93 Difference]: Finished difference Result 5814 states and 19441 transitions. [2021-08-21 13:38:29,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-08-21 13:38:29,772 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:38:29,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:38:29,785 INFO L225 Difference]: With dead ends: 5814 [2021-08-21 13:38:29,785 INFO L226 Difference]: Without dead ends: 5771 [2021-08-21 13:38:29,786 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 536 ImplicationChecksByTransitivity, 743.6ms TimeCoverageRelationStatistics Valid=241, Invalid=2309, Unknown=0, NotChecked=0, Total=2550 [2021-08-21 13:38:29,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5771 states. [2021-08-21 13:38:29,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5771 to 5515. [2021-08-21 13:38:29,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5515 states, 5514 states have (on average 3.377221617700399) internal successors, (18622), 5514 states have internal predecessors, (18622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:38:29,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5515 states to 5515 states and 18622 transitions. [2021-08-21 13:38:29,893 INFO L78 Accepts]: Start accepts. Automaton has 5515 states and 18622 transitions. Word has length 39 [2021-08-21 13:38:29,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:38:29,893 INFO L470 AbstractCegarLoop]: Abstraction has 5515 states and 18622 transitions. [2021-08-21 13:38:29,893 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:38:29,893 INFO L276 IsEmpty]: Start isEmpty. Operand 5515 states and 18622 transitions. [2021-08-21 13:38:29,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:38:29,903 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:38:29,903 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:38:29,903 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable409 [2021-08-21 13:38:29,903 INFO L402 AbstractCegarLoop]: === Iteration 411 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:38:29,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:38:29,903 INFO L82 PathProgramCache]: Analyzing trace with hash 1230504028, now seen corresponding path program 411 times [2021-08-21 13:38:29,904 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:38:29,904 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2137610232] [2021-08-21 13:38:29,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:38:29,904 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:38:29,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:38:30,106 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:38:30,107 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:38:30,107 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2137610232] [2021-08-21 13:38:30,107 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2137610232] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:38:30,107 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:38:30,107 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 13:38:30,107 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572781910] [2021-08-21 13:38:30,107 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 13:38:30,107 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:38:30,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 13:38:30,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-08-21 13:38:30,108 INFO L87 Difference]: Start difference. First operand 5515 states and 18622 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:38:31,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:38:31,206 INFO L93 Difference]: Finished difference Result 5897 states and 19623 transitions. [2021-08-21 13:38:31,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-08-21 13:38:31,206 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:38:31,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:38:31,219 INFO L225 Difference]: With dead ends: 5897 [2021-08-21 13:38:31,219 INFO L226 Difference]: Without dead ends: 5785 [2021-08-21 13:38:31,220 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 572 ImplicationChecksByTransitivity, 685.0ms TimeCoverageRelationStatistics Valid=254, Invalid=2398, Unknown=0, NotChecked=0, Total=2652 [2021-08-21 13:38:31,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5785 states. [2021-08-21 13:38:31,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5785 to 5515. [2021-08-21 13:38:31,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5515 states, 5514 states have (on average 3.3737758433079432) internal successors, (18603), 5514 states have internal predecessors, (18603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:38:31,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5515 states to 5515 states and 18603 transitions. [2021-08-21 13:38:31,383 INFO L78 Accepts]: Start accepts. Automaton has 5515 states and 18603 transitions. Word has length 39 [2021-08-21 13:38:31,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:38:31,383 INFO L470 AbstractCegarLoop]: Abstraction has 5515 states and 18603 transitions. [2021-08-21 13:38:31,384 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:38:31,384 INFO L276 IsEmpty]: Start isEmpty. Operand 5515 states and 18603 transitions. [2021-08-21 13:38:31,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:38:31,393 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:38:31,393 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:38:31,393 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable410 [2021-08-21 13:38:31,394 INFO L402 AbstractCegarLoop]: === Iteration 412 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:38:31,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:38:31,394 INFO L82 PathProgramCache]: Analyzing trace with hash 1847722430, now seen corresponding path program 412 times [2021-08-21 13:38:31,394 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:38:31,394 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [571976639] [2021-08-21 13:38:31,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:38:31,394 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:38:31,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:38:31,668 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:38:31,668 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:38:31,668 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [571976639] [2021-08-21 13:38:31,669 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [571976639] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:38:31,669 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:38:31,669 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 13:38:31,669 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317909753] [2021-08-21 13:38:31,669 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 13:38:31,669 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:38:31,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 13:38:31,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-08-21 13:38:31,669 INFO L87 Difference]: Start difference. First operand 5515 states and 18603 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:38:32,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:38:32,890 INFO L93 Difference]: Finished difference Result 5816 states and 19421 transitions. [2021-08-21 13:38:32,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-08-21 13:38:32,890 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:38:32,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:38:32,902 INFO L225 Difference]: With dead ends: 5816 [2021-08-21 13:38:32,902 INFO L226 Difference]: Without dead ends: 5770 [2021-08-21 13:38:32,903 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 444 ImplicationChecksByTransitivity, 790.1ms TimeCoverageRelationStatistics Valid=222, Invalid=2034, Unknown=0, NotChecked=0, Total=2256 [2021-08-21 13:38:32,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5770 states. [2021-08-21 13:38:32,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5770 to 5507. [2021-08-21 13:38:32,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5507 states, 5506 states have (on average 3.3764983654195424) internal successors, (18591), 5506 states have internal predecessors, (18591), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:38:32,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5507 states to 5507 states and 18591 transitions. [2021-08-21 13:38:32,981 INFO L78 Accepts]: Start accepts. Automaton has 5507 states and 18591 transitions. Word has length 39 [2021-08-21 13:38:32,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:38:32,981 INFO L470 AbstractCegarLoop]: Abstraction has 5507 states and 18591 transitions. [2021-08-21 13:38:32,981 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:38:32,981 INFO L276 IsEmpty]: Start isEmpty. Operand 5507 states and 18591 transitions. [2021-08-21 13:38:32,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:38:32,989 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:38:32,989 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:38:32,989 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable411 [2021-08-21 13:38:32,989 INFO L402 AbstractCegarLoop]: === Iteration 413 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:38:32,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:38:32,989 INFO L82 PathProgramCache]: Analyzing trace with hash 412654940, now seen corresponding path program 413 times [2021-08-21 13:38:32,989 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:38:32,989 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2020450777] [2021-08-21 13:38:32,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:38:32,989 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:38:32,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:38:33,271 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:38:33,271 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:38:33,271 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2020450777] [2021-08-21 13:38:33,271 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2020450777] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:38:33,271 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:38:33,271 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 13:38:33,272 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [333071705] [2021-08-21 13:38:33,272 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 13:38:33,272 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:38:33,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 13:38:33,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-08-21 13:38:33,272 INFO L87 Difference]: Start difference. First operand 5507 states and 18591 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:38:34,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:38:34,551 INFO L93 Difference]: Finished difference Result 5800 states and 19385 transitions. [2021-08-21 13:38:34,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-08-21 13:38:34,551 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:38:34,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:38:34,563 INFO L225 Difference]: With dead ends: 5800 [2021-08-21 13:38:34,563 INFO L226 Difference]: Without dead ends: 5725 [2021-08-21 13:38:34,563 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 476 ImplicationChecksByTransitivity, 850.9ms TimeCoverageRelationStatistics Valid=228, Invalid=2124, Unknown=0, NotChecked=0, Total=2352 [2021-08-21 13:38:34,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5725 states. [2021-08-21 13:38:34,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5725 to 5477. [2021-08-21 13:38:34,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5477 states, 5476 states have (on average 3.3823959094229363) internal successors, (18522), 5476 states have internal predecessors, (18522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:38:34,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5477 states to 5477 states and 18522 transitions. [2021-08-21 13:38:34,636 INFO L78 Accepts]: Start accepts. Automaton has 5477 states and 18522 transitions. Word has length 39 [2021-08-21 13:38:34,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:38:34,636 INFO L470 AbstractCegarLoop]: Abstraction has 5477 states and 18522 transitions. [2021-08-21 13:38:34,636 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:38:34,636 INFO L276 IsEmpty]: Start isEmpty. Operand 5477 states and 18522 transitions. [2021-08-21 13:38:34,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:38:34,643 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:38:34,643 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:38:34,643 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable412 [2021-08-21 13:38:34,644 INFO L402 AbstractCegarLoop]: === Iteration 414 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:38:34,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:38:34,644 INFO L82 PathProgramCache]: Analyzing trace with hash -870048178, now seen corresponding path program 414 times [2021-08-21 13:38:34,644 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:38:34,644 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [474715977] [2021-08-21 13:38:34,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:38:34,644 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:38:34,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:38:34,928 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:38:34,928 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:38:34,929 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [474715977] [2021-08-21 13:38:34,929 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [474715977] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:38:34,929 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:38:34,929 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 13:38:34,929 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [83985976] [2021-08-21 13:38:34,929 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 13:38:34,929 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:38:34,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 13:38:34,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-08-21 13:38:34,929 INFO L87 Difference]: Start difference. First operand 5477 states and 18522 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:38:36,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:38:36,100 INFO L93 Difference]: Finished difference Result 5735 states and 19239 transitions. [2021-08-21 13:38:36,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-08-21 13:38:36,100 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:38:36,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:38:36,113 INFO L225 Difference]: With dead ends: 5735 [2021-08-21 13:38:36,114 INFO L226 Difference]: Without dead ends: 5677 [2021-08-21 13:38:36,114 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 420 ImplicationChecksByTransitivity, 750.6ms TimeCoverageRelationStatistics Valid=212, Invalid=1950, Unknown=0, NotChecked=0, Total=2162 [2021-08-21 13:38:36,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5677 states. [2021-08-21 13:38:36,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5677 to 5476. [2021-08-21 13:38:36,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5476 states, 5475 states have (on average 3.382648401826484) internal successors, (18520), 5475 states have internal predecessors, (18520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:38:36,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5476 states to 5476 states and 18520 transitions. [2021-08-21 13:38:36,199 INFO L78 Accepts]: Start accepts. Automaton has 5476 states and 18520 transitions. Word has length 39 [2021-08-21 13:38:36,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:38:36,199 INFO L470 AbstractCegarLoop]: Abstraction has 5476 states and 18520 transitions. [2021-08-21 13:38:36,199 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:38:36,199 INFO L276 IsEmpty]: Start isEmpty. Operand 5476 states and 18520 transitions. [2021-08-21 13:38:36,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:38:36,208 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:38:36,208 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:38:36,208 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable413 [2021-08-21 13:38:36,208 INFO L402 AbstractCegarLoop]: === Iteration 415 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:38:36,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:38:36,209 INFO L82 PathProgramCache]: Analyzing trace with hash 468708410, now seen corresponding path program 415 times [2021-08-21 13:38:36,209 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:38:36,209 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1530761263] [2021-08-21 13:38:36,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:38:36,209 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:38:36,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:38:36,495 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:38:36,495 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:38:36,495 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1530761263] [2021-08-21 13:38:36,495 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1530761263] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:38:36,496 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:38:36,496 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 13:38:36,496 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2135333862] [2021-08-21 13:38:36,496 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 13:38:36,496 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:38:36,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 13:38:36,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-08-21 13:38:36,496 INFO L87 Difference]: Start difference. First operand 5476 states and 18520 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:38:37,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:38:37,714 INFO L93 Difference]: Finished difference Result 5675 states and 19108 transitions. [2021-08-21 13:38:37,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-08-21 13:38:37,715 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:38:37,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:38:37,727 INFO L225 Difference]: With dead ends: 5675 [2021-08-21 13:38:37,727 INFO L226 Difference]: Without dead ends: 5575 [2021-08-21 13:38:37,727 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 418 ImplicationChecksByTransitivity, 730.9ms TimeCoverageRelationStatistics Valid=205, Invalid=1957, Unknown=0, NotChecked=0, Total=2162 [2021-08-21 13:38:37,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5575 states. [2021-08-21 13:38:37,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5575 to 5437. [2021-08-21 13:38:37,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5437 states, 5436 states have (on average 3.391096394407653) internal successors, (18434), 5436 states have internal predecessors, (18434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:38:37,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5437 states to 5437 states and 18434 transitions. [2021-08-21 13:38:37,801 INFO L78 Accepts]: Start accepts. Automaton has 5437 states and 18434 transitions. Word has length 39 [2021-08-21 13:38:37,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:38:37,801 INFO L470 AbstractCegarLoop]: Abstraction has 5437 states and 18434 transitions. [2021-08-21 13:38:37,801 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:38:37,801 INFO L276 IsEmpty]: Start isEmpty. Operand 5437 states and 18434 transitions. [2021-08-21 13:38:37,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:38:37,808 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:38:37,809 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:38:37,809 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable414 [2021-08-21 13:38:37,809 INFO L402 AbstractCegarLoop]: === Iteration 416 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:38:37,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:38:37,809 INFO L82 PathProgramCache]: Analyzing trace with hash 688501160, now seen corresponding path program 416 times [2021-08-21 13:38:37,809 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:38:37,809 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [534275103] [2021-08-21 13:38:37,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:38:37,809 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:38:37,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:38:38,092 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:38:38,092 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:38:38,092 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [534275103] [2021-08-21 13:38:38,092 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [534275103] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:38:38,092 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:38:38,093 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 13:38:38,093 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527713817] [2021-08-21 13:38:38,093 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 13:38:38,093 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:38:38,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 13:38:38,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-08-21 13:38:38,093 INFO L87 Difference]: Start difference. First operand 5437 states and 18434 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:38:40,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:38:40,037 INFO L93 Difference]: Finished difference Result 7983 states and 26964 transitions. [2021-08-21 13:38:40,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2021-08-21 13:38:40,039 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:38:40,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:38:40,058 INFO L225 Difference]: With dead ends: 7983 [2021-08-21 13:38:40,058 INFO L226 Difference]: Without dead ends: 7940 [2021-08-21 13:38:40,059 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1128 ImplicationChecksByTransitivity, 1089.4ms TimeCoverageRelationStatistics Valid=362, Invalid=3928, Unknown=0, NotChecked=0, Total=4290 [2021-08-21 13:38:40,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7940 states. [2021-08-21 13:38:40,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7940 to 5471. [2021-08-21 13:38:40,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5471 states, 5470 states have (on average 3.389579524680073) internal successors, (18541), 5470 states have internal predecessors, (18541), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:38:40,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5471 states to 5471 states and 18541 transitions. [2021-08-21 13:38:40,212 INFO L78 Accepts]: Start accepts. Automaton has 5471 states and 18541 transitions. Word has length 39 [2021-08-21 13:38:40,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:38:40,212 INFO L470 AbstractCegarLoop]: Abstraction has 5471 states and 18541 transitions. [2021-08-21 13:38:40,212 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:38:40,212 INFO L276 IsEmpty]: Start isEmpty. Operand 5471 states and 18541 transitions. [2021-08-21 13:38:40,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:38:40,219 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:38:40,219 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:38:40,219 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable415 [2021-08-21 13:38:40,219 INFO L402 AbstractCegarLoop]: === Iteration 417 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:38:40,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:38:40,220 INFO L82 PathProgramCache]: Analyzing trace with hash -1092097142, now seen corresponding path program 417 times [2021-08-21 13:38:40,220 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:38:40,220 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1740829878] [2021-08-21 13:38:40,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:38:40,220 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:38:40,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:38:40,501 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:38:40,501 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:38:40,501 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1740829878] [2021-08-21 13:38:40,501 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1740829878] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:38:40,501 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:38:40,501 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 13:38:40,501 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1026693829] [2021-08-21 13:38:40,502 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 13:38:40,502 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:38:40,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 13:38:40,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-08-21 13:38:40,502 INFO L87 Difference]: Start difference. First operand 5471 states and 18541 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:38:42,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:38:42,829 INFO L93 Difference]: Finished difference Result 8808 states and 29786 transitions. [2021-08-21 13:38:42,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2021-08-21 13:38:42,829 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:38:42,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:38:42,849 INFO L225 Difference]: With dead ends: 8808 [2021-08-21 13:38:42,849 INFO L226 Difference]: Without dead ends: 8756 [2021-08-21 13:38:42,850 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1429 ImplicationChecksByTransitivity, 1289.1ms TimeCoverageRelationStatistics Valid=405, Invalid=4707, Unknown=0, NotChecked=0, Total=5112 [2021-08-21 13:38:42,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8756 states. [2021-08-21 13:38:42,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8756 to 5437. [2021-08-21 13:38:42,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5437 states, 5436 states have (on average 3.391096394407653) internal successors, (18434), 5436 states have internal predecessors, (18434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:38:42,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5437 states to 5437 states and 18434 transitions. [2021-08-21 13:38:42,956 INFO L78 Accepts]: Start accepts. Automaton has 5437 states and 18434 transitions. Word has length 39 [2021-08-21 13:38:42,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:38:42,956 INFO L470 AbstractCegarLoop]: Abstraction has 5437 states and 18434 transitions. [2021-08-21 13:38:42,956 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:38:42,956 INFO L276 IsEmpty]: Start isEmpty. Operand 5437 states and 18434 transitions. [2021-08-21 13:38:42,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:38:42,963 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:38:42,963 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:38:42,963 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable416 [2021-08-21 13:38:42,963 INFO L402 AbstractCegarLoop]: === Iteration 418 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:38:42,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:38:42,964 INFO L82 PathProgramCache]: Analyzing trace with hash 1606984730, now seen corresponding path program 418 times [2021-08-21 13:38:42,964 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:38:42,964 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [206216831] [2021-08-21 13:38:42,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:38:42,964 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:38:42,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:38:43,291 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:38:43,291 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:38:43,291 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [206216831] [2021-08-21 13:38:43,291 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [206216831] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:38:43,291 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:38:43,291 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 13:38:43,291 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209373937] [2021-08-21 13:38:43,292 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 13:38:43,292 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:38:43,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 13:38:43,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-08-21 13:38:43,292 INFO L87 Difference]: Start difference. First operand 5437 states and 18434 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:38:44,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:38:44,905 INFO L93 Difference]: Finished difference Result 7494 states and 25129 transitions. [2021-08-21 13:38:44,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-08-21 13:38:44,906 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:38:44,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:38:44,922 INFO L225 Difference]: With dead ends: 7494 [2021-08-21 13:38:44,923 INFO L226 Difference]: Without dead ends: 7439 [2021-08-21 13:38:44,923 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 713 ImplicationChecksByTransitivity, 927.9ms TimeCoverageRelationStatistics Valid=286, Invalid=2794, Unknown=0, NotChecked=0, Total=3080 [2021-08-21 13:38:44,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7439 states. [2021-08-21 13:38:45,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7439 to 5465. [2021-08-21 13:38:45,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5465 states, 5464 states have (on average 3.390190336749634) internal successors, (18524), 5464 states have internal predecessors, (18524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:38:45,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5465 states to 5465 states and 18524 transitions. [2021-08-21 13:38:45,025 INFO L78 Accepts]: Start accepts. Automaton has 5465 states and 18524 transitions. Word has length 39 [2021-08-21 13:38:45,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:38:45,025 INFO L470 AbstractCegarLoop]: Abstraction has 5465 states and 18524 transitions. [2021-08-21 13:38:45,025 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:38:45,025 INFO L276 IsEmpty]: Start isEmpty. Operand 5465 states and 18524 transitions. [2021-08-21 13:38:45,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:38:45,034 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:38:45,034 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:38:45,034 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable417 [2021-08-21 13:38:45,034 INFO L402 AbstractCegarLoop]: === Iteration 419 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:38:45,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:38:45,034 INFO L82 PathProgramCache]: Analyzing trace with hash -1515330344, now seen corresponding path program 419 times [2021-08-21 13:38:45,035 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:38:45,035 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [484504441] [2021-08-21 13:38:45,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:38:45,035 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:38:45,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:38:45,339 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:38:45,339 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:38:45,339 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [484504441] [2021-08-21 13:38:45,340 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [484504441] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:38:45,340 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:38:45,340 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 13:38:45,340 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [464509452] [2021-08-21 13:38:45,340 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 13:38:45,340 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:38:45,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 13:38:45,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-08-21 13:38:45,340 INFO L87 Difference]: Start difference. First operand 5465 states and 18524 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:38:47,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:38:47,290 INFO L93 Difference]: Finished difference Result 8175 states and 27493 transitions. [2021-08-21 13:38:47,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2021-08-21 13:38:47,290 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:38:47,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:38:47,307 INFO L225 Difference]: With dead ends: 8175 [2021-08-21 13:38:47,307 INFO L226 Difference]: Without dead ends: 8115 [2021-08-21 13:38:47,308 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 915 ImplicationChecksByTransitivity, 1039.8ms TimeCoverageRelationStatistics Valid=317, Invalid=3343, Unknown=0, NotChecked=0, Total=3660 [2021-08-21 13:38:47,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8115 states. [2021-08-21 13:38:47,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8115 to 5463. [2021-08-21 13:38:47,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5463 states, 5462 states have (on average 3.3905162943976563) internal successors, (18519), 5462 states have internal predecessors, (18519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:38:47,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5463 states to 5463 states and 18519 transitions. [2021-08-21 13:38:47,402 INFO L78 Accepts]: Start accepts. Automaton has 5463 states and 18519 transitions. Word has length 39 [2021-08-21 13:38:47,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:38:47,402 INFO L470 AbstractCegarLoop]: Abstraction has 5463 states and 18519 transitions. [2021-08-21 13:38:47,402 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:38:47,402 INFO L276 IsEmpty]: Start isEmpty. Operand 5463 states and 18519 transitions. [2021-08-21 13:38:47,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:38:47,410 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:38:47,410 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:38:47,410 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable418 [2021-08-21 13:38:47,410 INFO L402 AbstractCegarLoop]: === Iteration 420 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:38:47,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:38:47,410 INFO L82 PathProgramCache]: Analyzing trace with hash 902233350, now seen corresponding path program 420 times [2021-08-21 13:38:47,410 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:38:47,410 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1955541741] [2021-08-21 13:38:47,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:38:47,411 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:38:47,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:38:47,698 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:38:47,698 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:38:47,698 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1955541741] [2021-08-21 13:38:47,699 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1955541741] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:38:47,699 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:38:47,699 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 13:38:47,699 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1652174859] [2021-08-21 13:38:47,699 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 13:38:47,699 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:38:47,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 13:38:47,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-08-21 13:38:47,699 INFO L87 Difference]: Start difference. First operand 5463 states and 18519 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:38:49,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:38:49,179 INFO L93 Difference]: Finished difference Result 7463 states and 25083 transitions. [2021-08-21 13:38:49,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2021-08-21 13:38:49,179 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:38:49,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:38:49,197 INFO L225 Difference]: With dead ends: 7463 [2021-08-21 13:38:49,198 INFO L226 Difference]: Without dead ends: 7372 [2021-08-21 13:38:49,198 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 678 ImplicationChecksByTransitivity, 795.3ms TimeCoverageRelationStatistics Valid=271, Invalid=2699, Unknown=0, NotChecked=0, Total=2970 [2021-08-21 13:38:49,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7372 states. [2021-08-21 13:38:49,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7372 to 5463. [2021-08-21 13:38:49,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5463 states, 5462 states have (on average 3.3894177956792384) internal successors, (18513), 5462 states have internal predecessors, (18513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:38:49,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5463 states to 5463 states and 18513 transitions. [2021-08-21 13:38:49,312 INFO L78 Accepts]: Start accepts. Automaton has 5463 states and 18513 transitions. Word has length 39 [2021-08-21 13:38:49,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:38:49,313 INFO L470 AbstractCegarLoop]: Abstraction has 5463 states and 18513 transitions. [2021-08-21 13:38:49,313 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:38:49,313 INFO L276 IsEmpty]: Start isEmpty. Operand 5463 states and 18513 transitions. [2021-08-21 13:38:49,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:38:49,322 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:38:49,322 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:38:49,322 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable419 [2021-08-21 13:38:49,322 INFO L402 AbstractCegarLoop]: === Iteration 421 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:38:49,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:38:49,322 INFO L82 PathProgramCache]: Analyzing trace with hash -600248856, now seen corresponding path program 421 times [2021-08-21 13:38:49,322 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:38:49,322 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1145116579] [2021-08-21 13:38:49,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:38:49,322 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:38:49,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:38:49,535 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:38:49,535 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:38:49,535 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1145116579] [2021-08-21 13:38:49,535 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1145116579] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:38:49,535 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:38:49,535 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 13:38:49,535 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973995925] [2021-08-21 13:38:49,535 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 13:38:49,535 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:38:49,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 13:38:49,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-08-21 13:38:49,536 INFO L87 Difference]: Start difference. First operand 5463 states and 18513 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:38:50,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:38:50,817 INFO L93 Difference]: Finished difference Result 8096 states and 27315 transitions. [2021-08-21 13:38:50,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-08-21 13:38:50,818 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:38:50,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:38:50,837 INFO L225 Difference]: With dead ends: 8096 [2021-08-21 13:38:50,837 INFO L226 Difference]: Without dead ends: 7980 [2021-08-21 13:38:50,838 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 827 ImplicationChecksByTransitivity, 657.5ms TimeCoverageRelationStatistics Valid=296, Invalid=3126, Unknown=0, NotChecked=0, Total=3422 [2021-08-21 13:38:50,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7980 states. [2021-08-21 13:38:50,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7980 to 5417. [2021-08-21 13:38:50,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5417 states, 5416 states have (on average 3.395125553914328) internal successors, (18388), 5416 states have internal predecessors, (18388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:38:50,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5417 states to 5417 states and 18388 transitions. [2021-08-21 13:38:50,954 INFO L78 Accepts]: Start accepts. Automaton has 5417 states and 18388 transitions. Word has length 39 [2021-08-21 13:38:50,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:38:50,954 INFO L470 AbstractCegarLoop]: Abstraction has 5417 states and 18388 transitions. [2021-08-21 13:38:50,954 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:38:50,954 INFO L276 IsEmpty]: Start isEmpty. Operand 5417 states and 18388 transitions. [2021-08-21 13:38:50,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:38:50,963 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:38:50,963 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:38:50,964 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable420 [2021-08-21 13:38:50,964 INFO L402 AbstractCegarLoop]: === Iteration 422 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:38:50,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:38:50,964 INFO L82 PathProgramCache]: Analyzing trace with hash 28984408, now seen corresponding path program 422 times [2021-08-21 13:38:50,964 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:38:50,964 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1932783767] [2021-08-21 13:38:50,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:38:50,964 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:38:50,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:38:51,159 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:38:51,159 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:38:51,159 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1932783767] [2021-08-21 13:38:51,159 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1932783767] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:38:51,159 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:38:51,159 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 13:38:51,159 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [988718180] [2021-08-21 13:38:51,159 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 13:38:51,159 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:38:51,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 13:38:51,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-08-21 13:38:51,160 INFO L87 Difference]: Start difference. First operand 5417 states and 18388 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:38:52,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:38:52,208 INFO L93 Difference]: Finished difference Result 5910 states and 19840 transitions. [2021-08-21 13:38:52,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-08-21 13:38:52,208 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:38:52,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:38:52,220 INFO L225 Difference]: With dead ends: 5910 [2021-08-21 13:38:52,220 INFO L226 Difference]: Without dead ends: 5843 [2021-08-21 13:38:52,221 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 480 ImplicationChecksByTransitivity, 649.0ms TimeCoverageRelationStatistics Valid=225, Invalid=2127, Unknown=0, NotChecked=0, Total=2352 [2021-08-21 13:38:52,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5843 states. [2021-08-21 13:38:52,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5843 to 5435. [2021-08-21 13:38:52,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5435 states, 5434 states have (on average 3.3925285241074716) internal successors, (18435), 5434 states have internal predecessors, (18435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:38:52,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5435 states to 5435 states and 18435 transitions. [2021-08-21 13:38:52,307 INFO L78 Accepts]: Start accepts. Automaton has 5435 states and 18435 transitions. Word has length 39 [2021-08-21 13:38:52,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:38:52,308 INFO L470 AbstractCegarLoop]: Abstraction has 5435 states and 18435 transitions. [2021-08-21 13:38:52,308 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:38:52,308 INFO L276 IsEmpty]: Start isEmpty. Operand 5435 states and 18435 transitions. [2021-08-21 13:38:52,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:38:52,316 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:38:52,316 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:38:52,316 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable421 [2021-08-21 13:38:52,316 INFO L402 AbstractCegarLoop]: === Iteration 423 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:38:52,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:38:52,316 INFO L82 PathProgramCache]: Analyzing trace with hash -143158810, now seen corresponding path program 423 times [2021-08-21 13:38:52,317 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:38:52,317 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [491138709] [2021-08-21 13:38:52,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:38:52,317 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:38:52,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:38:52,609 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:38:52,609 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:38:52,609 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [491138709] [2021-08-21 13:38:52,609 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [491138709] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:38:52,609 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:38:52,609 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 13:38:52,609 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903924176] [2021-08-21 13:38:52,610 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 13:38:52,610 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:38:52,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 13:38:52,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-08-21 13:38:52,610 INFO L87 Difference]: Start difference. First operand 5435 states and 18435 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:38:53,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:38:53,725 INFO L93 Difference]: Finished difference Result 5870 states and 19710 transitions. [2021-08-21 13:38:53,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-08-21 13:38:53,725 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:38:53,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:38:53,740 INFO L225 Difference]: With dead ends: 5870 [2021-08-21 13:38:53,740 INFO L226 Difference]: Without dead ends: 5807 [2021-08-21 13:38:53,740 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 422 ImplicationChecksByTransitivity, 725.0ms TimeCoverageRelationStatistics Valid=211, Invalid=1951, Unknown=0, NotChecked=0, Total=2162 [2021-08-21 13:38:53,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5807 states. [2021-08-21 13:38:53,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5807 to 5467. [2021-08-21 13:38:53,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5467 states, 5466 states have (on average 3.388035126234907) internal successors, (18519), 5466 states have internal predecessors, (18519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:38:53,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5467 states to 5467 states and 18519 transitions. [2021-08-21 13:38:53,838 INFO L78 Accepts]: Start accepts. Automaton has 5467 states and 18519 transitions. Word has length 39 [2021-08-21 13:38:53,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:38:53,839 INFO L470 AbstractCegarLoop]: Abstraction has 5467 states and 18519 transitions. [2021-08-21 13:38:53,839 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:38:53,839 INFO L276 IsEmpty]: Start isEmpty. Operand 5467 states and 18519 transitions. [2021-08-21 13:38:53,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:38:53,848 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:38:53,848 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:38:53,848 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable422 [2021-08-21 13:38:53,848 INFO L402 AbstractCegarLoop]: === Iteration 424 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:38:53,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:38:53,848 INFO L82 PathProgramCache]: Analyzing trace with hash -1945992966, now seen corresponding path program 424 times [2021-08-21 13:38:53,849 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:38:53,849 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1626940715] [2021-08-21 13:38:53,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:38:53,849 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:38:53,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:38:54,143 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:38:54,143 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:38:54,143 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1626940715] [2021-08-21 13:38:54,143 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1626940715] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:38:54,143 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:38:54,143 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 13:38:54,143 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869776550] [2021-08-21 13:38:54,143 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 13:38:54,143 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:38:54,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 13:38:54,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-08-21 13:38:54,144 INFO L87 Difference]: Start difference. First operand 5467 states and 18519 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:38:55,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:38:55,198 INFO L93 Difference]: Finished difference Result 5870 states and 19702 transitions. [2021-08-21 13:38:55,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-08-21 13:38:55,198 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:38:55,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:38:55,213 INFO L225 Difference]: With dead ends: 5870 [2021-08-21 13:38:55,213 INFO L226 Difference]: Without dead ends: 5735 [2021-08-21 13:38:55,214 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 422 ImplicationChecksByTransitivity, 679.0ms TimeCoverageRelationStatistics Valid=205, Invalid=1957, Unknown=0, NotChecked=0, Total=2162 [2021-08-21 13:38:55,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5735 states. [2021-08-21 13:38:55,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5735 to 5423. [2021-08-21 13:38:55,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5423 states, 5422 states have (on average 3.3937661379564736) internal successors, (18401), 5422 states have internal predecessors, (18401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:38:55,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5423 states to 5423 states and 18401 transitions. [2021-08-21 13:38:55,320 INFO L78 Accepts]: Start accepts. Automaton has 5423 states and 18401 transitions. Word has length 39 [2021-08-21 13:38:55,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:38:55,320 INFO L470 AbstractCegarLoop]: Abstraction has 5423 states and 18401 transitions. [2021-08-21 13:38:55,320 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:38:55,320 INFO L276 IsEmpty]: Start isEmpty. Operand 5423 states and 18401 transitions. [2021-08-21 13:38:55,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:38:55,330 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:38:55,330 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:38:55,330 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable423 [2021-08-21 13:38:55,330 INFO L402 AbstractCegarLoop]: === Iteration 425 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:38:55,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:38:55,330 INFO L82 PathProgramCache]: Analyzing trace with hash -276502838, now seen corresponding path program 425 times [2021-08-21 13:38:55,330 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:38:55,330 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [561765638] [2021-08-21 13:38:55,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:38:55,330 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:38:55,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:38:55,602 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:38:55,602 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:38:55,602 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [561765638] [2021-08-21 13:38:55,602 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [561765638] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:38:55,602 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:38:55,602 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 13:38:55,602 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585337472] [2021-08-21 13:38:55,602 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 13:38:55,602 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:38:55,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 13:38:55,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-08-21 13:38:55,603 INFO L87 Difference]: Start difference. First operand 5423 states and 18401 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:38:57,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:38:57,282 INFO L93 Difference]: Finished difference Result 5985 states and 20073 transitions. [2021-08-21 13:38:57,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2021-08-21 13:38:57,283 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:38:57,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:38:57,296 INFO L225 Difference]: With dead ends: 5985 [2021-08-21 13:38:57,296 INFO L226 Difference]: Without dead ends: 5918 [2021-08-21 13:38:57,297 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1056 ImplicationChecksByTransitivity, 1147.3ms TimeCoverageRelationStatistics Valid=393, Invalid=3639, Unknown=0, NotChecked=0, Total=4032 [2021-08-21 13:38:57,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5918 states. [2021-08-21 13:38:57,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5918 to 5449. [2021-08-21 13:38:57,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5449 states, 5448 states have (on average 3.3906020558002936) internal successors, (18472), 5448 states have internal predecessors, (18472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:38:57,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5449 states to 5449 states and 18472 transitions. [2021-08-21 13:38:57,388 INFO L78 Accepts]: Start accepts. Automaton has 5449 states and 18472 transitions. Word has length 39 [2021-08-21 13:38:57,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:38:57,388 INFO L470 AbstractCegarLoop]: Abstraction has 5449 states and 18472 transitions. [2021-08-21 13:38:57,388 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:38:57,388 INFO L276 IsEmpty]: Start isEmpty. Operand 5449 states and 18472 transitions. [2021-08-21 13:38:57,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:38:57,399 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:38:57,399 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:38:57,399 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable424 [2021-08-21 13:38:57,399 INFO L402 AbstractCegarLoop]: === Iteration 426 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:38:57,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:38:57,399 INFO L82 PathProgramCache]: Analyzing trace with hash -1996118808, now seen corresponding path program 426 times [2021-08-21 13:38:57,399 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:38:57,400 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [48325113] [2021-08-21 13:38:57,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:38:57,400 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:38:57,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:38:57,705 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:38:57,705 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:38:57,705 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [48325113] [2021-08-21 13:38:57,705 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [48325113] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:38:57,705 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:38:57,705 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 13:38:57,705 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589796134] [2021-08-21 13:38:57,705 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 13:38:57,705 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:38:57,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 13:38:57,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-08-21 13:38:57,706 INFO L87 Difference]: Start difference. First operand 5449 states and 18472 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:38:59,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:38:59,605 INFO L93 Difference]: Finished difference Result 6109 states and 20370 transitions. [2021-08-21 13:38:59,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2021-08-21 13:38:59,606 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:38:59,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:38:59,622 INFO L225 Difference]: With dead ends: 6109 [2021-08-21 13:38:59,622 INFO L226 Difference]: Without dead ends: 6066 [2021-08-21 13:38:59,623 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1445 ImplicationChecksByTransitivity, 1298.2ms TimeCoverageRelationStatistics Valid=454, Invalid=4658, Unknown=0, NotChecked=0, Total=5112 [2021-08-21 13:38:59,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6066 states. [2021-08-21 13:38:59,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6066 to 5455. [2021-08-21 13:38:59,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5455 states, 5454 states have (on average 3.389255592225889) internal successors, (18485), 5454 states have internal predecessors, (18485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:38:59,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5455 states to 5455 states and 18485 transitions. [2021-08-21 13:38:59,737 INFO L78 Accepts]: Start accepts. Automaton has 5455 states and 18485 transitions. Word has length 39 [2021-08-21 13:38:59,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:38:59,737 INFO L470 AbstractCegarLoop]: Abstraction has 5455 states and 18485 transitions. [2021-08-21 13:38:59,737 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:38:59,737 INFO L276 IsEmpty]: Start isEmpty. Operand 5455 states and 18485 transitions. [2021-08-21 13:38:59,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:38:59,747 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:38:59,747 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:38:59,747 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable425 [2021-08-21 13:38:59,747 INFO L402 AbstractCegarLoop]: === Iteration 427 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:38:59,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:38:59,748 INFO L82 PathProgramCache]: Analyzing trace with hash 518250186, now seen corresponding path program 427 times [2021-08-21 13:38:59,748 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:38:59,748 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1342220460] [2021-08-21 13:38:59,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:38:59,748 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:38:59,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:39:00,003 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:39:00,003 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:39:00,003 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1342220460] [2021-08-21 13:39:00,003 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1342220460] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:39:00,003 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:39:00,003 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 13:39:00,003 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971892917] [2021-08-21 13:39:00,003 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 13:39:00,004 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:39:00,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 13:39:00,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-08-21 13:39:00,004 INFO L87 Difference]: Start difference. First operand 5455 states and 18485 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:39:01,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:39:01,871 INFO L93 Difference]: Finished difference Result 6058 states and 20247 transitions. [2021-08-21 13:39:01,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2021-08-21 13:39:01,871 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:39:01,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:39:01,884 INFO L225 Difference]: With dead ends: 6058 [2021-08-21 13:39:01,884 INFO L226 Difference]: Without dead ends: 5994 [2021-08-21 13:39:01,885 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1289 ImplicationChecksByTransitivity, 1283.5ms TimeCoverageRelationStatistics Valid=423, Invalid=4269, Unknown=0, NotChecked=0, Total=4692 [2021-08-21 13:39:01,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5994 states. [2021-08-21 13:39:01,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5994 to 5433. [2021-08-21 13:39:01,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5433 states, 5432 states have (on average 3.393225331369661) internal successors, (18432), 5432 states have internal predecessors, (18432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:39:01,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5433 states to 5433 states and 18432 transitions. [2021-08-21 13:39:01,973 INFO L78 Accepts]: Start accepts. Automaton has 5433 states and 18432 transitions. Word has length 39 [2021-08-21 13:39:01,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:39:01,973 INFO L470 AbstractCegarLoop]: Abstraction has 5433 states and 18432 transitions. [2021-08-21 13:39:01,973 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:39:01,973 INFO L276 IsEmpty]: Start isEmpty. Operand 5433 states and 18432 transitions. [2021-08-21 13:39:01,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:39:01,982 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:39:01,982 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:39:01,982 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable426 [2021-08-21 13:39:01,982 INFO L402 AbstractCegarLoop]: === Iteration 428 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:39:01,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:39:01,983 INFO L82 PathProgramCache]: Analyzing trace with hash 1138684586, now seen corresponding path program 428 times [2021-08-21 13:39:01,983 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:39:01,983 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1801800245] [2021-08-21 13:39:01,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:39:01,983 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:39:01,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:39:02,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:39:02,273 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:39:02,273 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1801800245] [2021-08-21 13:39:02,273 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1801800245] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:39:02,273 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:39:02,273 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 13:39:02,273 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649113921] [2021-08-21 13:39:02,273 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 13:39:02,273 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:39:02,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 13:39:02,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-08-21 13:39:02,274 INFO L87 Difference]: Start difference. First operand 5433 states and 18432 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:39:04,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:39:04,066 INFO L93 Difference]: Finished difference Result 5985 states and 20067 transitions. [2021-08-21 13:39:04,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2021-08-21 13:39:04,067 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:39:04,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:39:04,078 INFO L225 Difference]: With dead ends: 5985 [2021-08-21 13:39:04,078 INFO L226 Difference]: Without dead ends: 5918 [2021-08-21 13:39:04,079 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1101 ImplicationChecksByTransitivity, 1187.1ms TimeCoverageRelationStatistics Valid=392, Invalid=3768, Unknown=0, NotChecked=0, Total=4160 [2021-08-21 13:39:04,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5918 states. [2021-08-21 13:39:04,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5918 to 5457. [2021-08-21 13:39:04,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5457 states, 5456 states have (on average 3.3925953079178885) internal successors, (18510), 5456 states have internal predecessors, (18510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:39:04,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5457 states to 5457 states and 18510 transitions. [2021-08-21 13:39:04,152 INFO L78 Accepts]: Start accepts. Automaton has 5457 states and 18510 transitions. Word has length 39 [2021-08-21 13:39:04,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:39:04,152 INFO L470 AbstractCegarLoop]: Abstraction has 5457 states and 18510 transitions. [2021-08-21 13:39:04,152 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:39:04,152 INFO L276 IsEmpty]: Start isEmpty. Operand 5457 states and 18510 transitions. [2021-08-21 13:39:04,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:39:04,159 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:39:04,159 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:39:04,159 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable427 [2021-08-21 13:39:04,159 INFO L402 AbstractCegarLoop]: === Iteration 429 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:39:04,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:39:04,159 INFO L82 PathProgramCache]: Analyzing trace with hash 1008089738, now seen corresponding path program 429 times [2021-08-21 13:39:04,160 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:39:04,160 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1935726125] [2021-08-21 13:39:04,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:39:04,160 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:39:04,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:39:04,448 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:39:04,448 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:39:04,448 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1935726125] [2021-08-21 13:39:04,448 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1935726125] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:39:04,448 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:39:04,448 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 13:39:04,448 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1229919835] [2021-08-21 13:39:04,448 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 13:39:04,449 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:39:04,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 13:39:04,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-08-21 13:39:04,449 INFO L87 Difference]: Start difference. First operand 5457 states and 18510 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:39:05,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:39:05,942 INFO L93 Difference]: Finished difference Result 5988 states and 20026 transitions. [2021-08-21 13:39:05,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2021-08-21 13:39:05,942 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:39:05,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:39:05,955 INFO L225 Difference]: With dead ends: 5988 [2021-08-21 13:39:05,955 INFO L226 Difference]: Without dead ends: 5925 [2021-08-21 13:39:05,956 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 878 ImplicationChecksByTransitivity, 1045.9ms TimeCoverageRelationStatistics Valid=350, Invalid=3190, Unknown=0, NotChecked=0, Total=3540 [2021-08-21 13:39:05,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5925 states. [2021-08-21 13:39:06,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5925 to 5457. [2021-08-21 13:39:06,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5457 states, 5456 states have (on average 3.3918621700879767) internal successors, (18506), 5456 states have internal predecessors, (18506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:39:06,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5457 states to 5457 states and 18506 transitions. [2021-08-21 13:39:06,045 INFO L78 Accepts]: Start accepts. Automaton has 5457 states and 18506 transitions. Word has length 39 [2021-08-21 13:39:06,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:39:06,046 INFO L470 AbstractCegarLoop]: Abstraction has 5457 states and 18506 transitions. [2021-08-21 13:39:06,046 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:39:06,046 INFO L276 IsEmpty]: Start isEmpty. Operand 5457 states and 18506 transitions. [2021-08-21 13:39:06,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:39:06,055 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:39:06,055 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:39:06,055 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable428 [2021-08-21 13:39:06,055 INFO L402 AbstractCegarLoop]: === Iteration 430 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:39:06,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:39:06,055 INFO L82 PathProgramCache]: Analyzing trace with hash 872411146, now seen corresponding path program 430 times [2021-08-21 13:39:06,055 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:39:06,055 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [558536803] [2021-08-21 13:39:06,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:39:06,055 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:39:06,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:39:06,345 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:39:06,345 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:39:06,345 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [558536803] [2021-08-21 13:39:06,345 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [558536803] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:39:06,346 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:39:06,346 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 13:39:06,346 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [53285595] [2021-08-21 13:39:06,346 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 13:39:06,346 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:39:06,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 13:39:06,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-08-21 13:39:06,346 INFO L87 Difference]: Start difference. First operand 5457 states and 18506 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:39:08,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:39:08,398 INFO L93 Difference]: Finished difference Result 6136 states and 20400 transitions. [2021-08-21 13:39:08,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2021-08-21 13:39:08,398 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:39:08,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:39:08,411 INFO L225 Difference]: With dead ends: 6136 [2021-08-21 13:39:08,411 INFO L226 Difference]: Without dead ends: 6093 [2021-08-21 13:39:08,412 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1387 ImplicationChecksByTransitivity, 1378.7ms TimeCoverageRelationStatistics Valid=429, Invalid=4541, Unknown=0, NotChecked=0, Total=4970 [2021-08-21 13:39:08,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6093 states. [2021-08-21 13:39:08,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6093 to 5469. [2021-08-21 13:39:08,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5469 states, 5468 states have (on average 3.391002194586686) internal successors, (18542), 5468 states have internal predecessors, (18542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:39:08,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5469 states to 5469 states and 18542 transitions. [2021-08-21 13:39:08,493 INFO L78 Accepts]: Start accepts. Automaton has 5469 states and 18542 transitions. Word has length 39 [2021-08-21 13:39:08,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:39:08,493 INFO L470 AbstractCegarLoop]: Abstraction has 5469 states and 18542 transitions. [2021-08-21 13:39:08,493 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:39:08,493 INFO L276 IsEmpty]: Start isEmpty. Operand 5469 states and 18542 transitions. [2021-08-21 13:39:08,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:39:08,500 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:39:08,500 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:39:08,500 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable429 [2021-08-21 13:39:08,500 INFO L402 AbstractCegarLoop]: === Iteration 431 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:39:08,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:39:08,501 INFO L82 PathProgramCache]: Analyzing trace with hash -908187156, now seen corresponding path program 431 times [2021-08-21 13:39:08,501 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:39:08,501 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1757053505] [2021-08-21 13:39:08,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:39:08,501 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:39:08,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:39:08,797 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:39:08,797 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:39:08,797 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1757053505] [2021-08-21 13:39:08,797 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1757053505] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:39:08,797 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:39:08,797 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 13:39:08,797 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940596075] [2021-08-21 13:39:08,798 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 13:39:08,798 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:39:08,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 13:39:08,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-08-21 13:39:08,798 INFO L87 Difference]: Start difference. First operand 5469 states and 18542 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:39:10,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:39:10,814 INFO L93 Difference]: Finished difference Result 6124 states and 20362 transitions. [2021-08-21 13:39:10,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2021-08-21 13:39:10,814 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:39:10,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:39:10,826 INFO L225 Difference]: With dead ends: 6124 [2021-08-21 13:39:10,827 INFO L226 Difference]: Without dead ends: 6072 [2021-08-21 13:39:10,827 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1333 ImplicationChecksByTransitivity, 1431.1ms TimeCoverageRelationStatistics Valid=418, Invalid=4412, Unknown=0, NotChecked=0, Total=4830 [2021-08-21 13:39:10,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6072 states. [2021-08-21 13:39:10,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6072 to 5461. [2021-08-21 13:39:10,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5461 states, 5460 states have (on average 3.3923076923076922) internal successors, (18522), 5460 states have internal predecessors, (18522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:39:10,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5461 states to 5461 states and 18522 transitions. [2021-08-21 13:39:10,914 INFO L78 Accepts]: Start accepts. Automaton has 5461 states and 18522 transitions. Word has length 39 [2021-08-21 13:39:10,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:39:10,914 INFO L470 AbstractCegarLoop]: Abstraction has 5461 states and 18522 transitions. [2021-08-21 13:39:10,915 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:39:10,915 INFO L276 IsEmpty]: Start isEmpty. Operand 5461 states and 18522 transitions. [2021-08-21 13:39:10,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:39:10,923 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:39:10,923 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:39:10,923 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable430 [2021-08-21 13:39:10,923 INFO L402 AbstractCegarLoop]: === Iteration 432 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:39:10,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:39:10,923 INFO L82 PathProgramCache]: Analyzing trace with hash 1790894716, now seen corresponding path program 432 times [2021-08-21 13:39:10,923 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:39:10,923 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2013883184] [2021-08-21 13:39:10,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:39:10,924 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:39:10,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:39:11,209 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:39:11,209 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:39:11,209 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2013883184] [2021-08-21 13:39:11,209 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2013883184] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:39:11,209 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:39:11,209 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 13:39:11,209 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463072517] [2021-08-21 13:39:11,209 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 13:39:11,209 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:39:11,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 13:39:11,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-08-21 13:39:11,210 INFO L87 Difference]: Start difference. First operand 5461 states and 18522 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:39:12,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:39:12,711 INFO L93 Difference]: Finished difference Result 6057 states and 20163 transitions. [2021-08-21 13:39:12,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2021-08-21 13:39:12,711 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:39:12,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:39:12,724 INFO L225 Difference]: With dead ends: 6057 [2021-08-21 13:39:12,724 INFO L226 Difference]: Without dead ends: 6002 [2021-08-21 13:39:12,725 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 875 ImplicationChecksByTransitivity, 1072.9ms TimeCoverageRelationStatistics Valid=349, Invalid=3191, Unknown=0, NotChecked=0, Total=3540 [2021-08-21 13:39:12,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6002 states. [2021-08-21 13:39:12,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6002 to 5463. [2021-08-21 13:39:12,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5463 states, 5462 states have (on average 3.3916147931160747) internal successors, (18525), 5462 states have internal predecessors, (18525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:39:12,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5463 states to 5463 states and 18525 transitions. [2021-08-21 13:39:12,815 INFO L78 Accepts]: Start accepts. Automaton has 5463 states and 18525 transitions. Word has length 39 [2021-08-21 13:39:12,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:39:12,815 INFO L470 AbstractCegarLoop]: Abstraction has 5463 states and 18525 transitions. [2021-08-21 13:39:12,816 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:39:12,816 INFO L276 IsEmpty]: Start isEmpty. Operand 5463 states and 18525 transitions. [2021-08-21 13:39:12,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:39:12,824 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:39:12,824 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:39:12,824 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable431 [2021-08-21 13:39:12,824 INFO L402 AbstractCegarLoop]: === Iteration 433 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:39:12,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:39:12,825 INFO L82 PathProgramCache]: Analyzing trace with hash -1331420358, now seen corresponding path program 433 times [2021-08-21 13:39:12,825 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:39:12,825 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [459142691] [2021-08-21 13:39:12,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:39:12,825 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:39:12,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:39:13,163 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:39:13,163 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:39:13,163 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [459142691] [2021-08-21 13:39:13,163 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [459142691] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:39:13,163 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:39:13,163 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 13:39:13,163 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1612326091] [2021-08-21 13:39:13,163 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 13:39:13,163 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:39:13,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 13:39:13,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-08-21 13:39:13,164 INFO L87 Difference]: Start difference. First operand 5463 states and 18525 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:39:14,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:39:14,540 INFO L93 Difference]: Finished difference Result 5995 states and 20018 transitions. [2021-08-21 13:39:14,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-08-21 13:39:14,540 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:39:14,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:39:14,553 INFO L225 Difference]: With dead ends: 5995 [2021-08-21 13:39:14,553 INFO L226 Difference]: Without dead ends: 5949 [2021-08-21 13:39:14,553 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 716 ImplicationChecksByTransitivity, 962.7ms TimeCoverageRelationStatistics Valid=308, Invalid=2772, Unknown=0, NotChecked=0, Total=3080 [2021-08-21 13:39:14,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5949 states. [2021-08-21 13:39:14,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5949 to 5467. [2021-08-21 13:39:14,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5467 states, 5466 states have (on average 3.390596414196853) internal successors, (18533), 5466 states have internal predecessors, (18533), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:39:14,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5467 states to 5467 states and 18533 transitions. [2021-08-21 13:39:14,651 INFO L78 Accepts]: Start accepts. Automaton has 5467 states and 18533 transitions. Word has length 39 [2021-08-21 13:39:14,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:39:14,651 INFO L470 AbstractCegarLoop]: Abstraction has 5467 states and 18533 transitions. [2021-08-21 13:39:14,651 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:39:14,651 INFO L276 IsEmpty]: Start isEmpty. Operand 5467 states and 18533 transitions. [2021-08-21 13:39:14,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:39:14,660 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:39:14,660 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:39:14,660 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable432 [2021-08-21 13:39:14,660 INFO L402 AbstractCegarLoop]: === Iteration 434 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:39:14,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:39:14,660 INFO L82 PathProgramCache]: Analyzing trace with hash -1578886520, now seen corresponding path program 434 times [2021-08-21 13:39:14,660 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:39:14,661 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [506714231] [2021-08-21 13:39:14,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:39:14,661 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:39:14,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:39:14,949 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:39:14,949 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:39:14,949 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [506714231] [2021-08-21 13:39:14,949 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [506714231] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:39:14,949 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:39:14,949 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 13:39:14,949 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799440315] [2021-08-21 13:39:14,949 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 13:39:14,949 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:39:14,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 13:39:14,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-08-21 13:39:14,950 INFO L87 Difference]: Start difference. First operand 5467 states and 18533 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:39:16,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:39:16,440 INFO L93 Difference]: Finished difference Result 5988 states and 19995 transitions. [2021-08-21 13:39:16,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2021-08-21 13:39:16,441 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:39:16,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:39:16,454 INFO L225 Difference]: With dead ends: 5988 [2021-08-21 13:39:16,454 INFO L226 Difference]: Without dead ends: 5939 [2021-08-21 13:39:16,454 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 754 ImplicationChecksByTransitivity, 1006.2ms TimeCoverageRelationStatistics Valid=321, Invalid=2871, Unknown=0, NotChecked=0, Total=3192 [2021-08-21 13:39:16,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5939 states. [2021-08-21 13:39:16,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5939 to 5457. [2021-08-21 13:39:16,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5457 states, 5456 states have (on average 3.393328445747801) internal successors, (18514), 5456 states have internal predecessors, (18514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:39:16,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5457 states to 5457 states and 18514 transitions. [2021-08-21 13:39:16,544 INFO L78 Accepts]: Start accepts. Automaton has 5457 states and 18514 transitions. Word has length 39 [2021-08-21 13:39:16,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:39:16,544 INFO L470 AbstractCegarLoop]: Abstraction has 5457 states and 18514 transitions. [2021-08-21 13:39:16,544 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:39:16,544 INFO L276 IsEmpty]: Start isEmpty. Operand 5457 states and 18514 transitions. [2021-08-21 13:39:16,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:39:16,553 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:39:16,553 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:39:16,553 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable433 [2021-08-21 13:39:16,553 INFO L402 AbstractCegarLoop]: === Iteration 435 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:39:16,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:39:16,553 INFO L82 PathProgramCache]: Analyzing trace with hash 2075011752, now seen corresponding path program 435 times [2021-08-21 13:39:16,553 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:39:16,553 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1291848010] [2021-08-21 13:39:16,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:39:16,553 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:39:16,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:39:16,839 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:39:16,839 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:39:16,839 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1291848010] [2021-08-21 13:39:16,839 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1291848010] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:39:16,839 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:39:16,839 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 13:39:16,839 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1435238845] [2021-08-21 13:39:16,839 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 13:39:16,839 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:39:16,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 13:39:16,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-08-21 13:39:16,840 INFO L87 Difference]: Start difference. First operand 5457 states and 18514 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:39:18,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:39:18,384 INFO L93 Difference]: Finished difference Result 5919 states and 19880 transitions. [2021-08-21 13:39:18,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-08-21 13:39:18,384 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:39:18,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:39:18,396 INFO L225 Difference]: With dead ends: 5919 [2021-08-21 13:39:18,396 INFO L226 Difference]: Without dead ends: 5852 [2021-08-21 13:39:18,397 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 839 ImplicationChecksByTransitivity, 1043.7ms TimeCoverageRelationStatistics Valid=329, Invalid=3093, Unknown=0, NotChecked=0, Total=3422 [2021-08-21 13:39:18,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5852 states. [2021-08-21 13:39:18,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5852 to 5475. [2021-08-21 13:39:18,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5475 states, 5474 states have (on average 3.390938984289368) internal successors, (18562), 5474 states have internal predecessors, (18562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:39:18,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5475 states to 5475 states and 18562 transitions. [2021-08-21 13:39:18,473 INFO L78 Accepts]: Start accepts. Automaton has 5475 states and 18562 transitions. Word has length 39 [2021-08-21 13:39:18,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:39:18,473 INFO L470 AbstractCegarLoop]: Abstraction has 5475 states and 18562 transitions. [2021-08-21 13:39:18,473 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:39:18,473 INFO L276 IsEmpty]: Start isEmpty. Operand 5475 states and 18562 transitions. [2021-08-21 13:39:18,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:39:18,480 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:39:18,480 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:39:18,480 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable434 [2021-08-21 13:39:18,480 INFO L402 AbstractCegarLoop]: === Iteration 436 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:39:18,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:39:18,481 INFO L82 PathProgramCache]: Analyzing trace with hash 355395782, now seen corresponding path program 436 times [2021-08-21 13:39:18,481 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:39:18,481 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [674214295] [2021-08-21 13:39:18,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:39:18,481 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:39:18,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:39:18,772 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:39:18,772 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:39:18,772 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [674214295] [2021-08-21 13:39:18,772 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [674214295] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:39:18,772 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:39:18,772 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 13:39:18,772 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124590409] [2021-08-21 13:39:18,772 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 13:39:18,772 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:39:18,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 13:39:18,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-08-21 13:39:18,773 INFO L87 Difference]: Start difference. First operand 5475 states and 18562 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:39:20,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:39:20,714 INFO L93 Difference]: Finished difference Result 6037 states and 20158 transitions. [2021-08-21 13:39:20,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2021-08-21 13:39:20,714 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:39:20,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:39:20,726 INFO L225 Difference]: With dead ends: 6037 [2021-08-21 13:39:20,726 INFO L226 Difference]: Without dead ends: 5994 [2021-08-21 13:39:20,727 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1138 ImplicationChecksByTransitivity, 1316.7ms TimeCoverageRelationStatistics Valid=381, Invalid=3909, Unknown=0, NotChecked=0, Total=4290 [2021-08-21 13:39:20,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5994 states. [2021-08-21 13:39:20,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5994 to 5481. [2021-08-21 13:39:20,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5481 states, 5480 states have (on average 3.3895985401459856) internal successors, (18575), 5480 states have internal predecessors, (18575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:39:20,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5481 states to 5481 states and 18575 transitions. [2021-08-21 13:39:20,806 INFO L78 Accepts]: Start accepts. Automaton has 5481 states and 18575 transitions. Word has length 39 [2021-08-21 13:39:20,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:39:20,806 INFO L470 AbstractCegarLoop]: Abstraction has 5481 states and 18575 transitions. [2021-08-21 13:39:20,806 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:39:20,806 INFO L276 IsEmpty]: Start isEmpty. Operand 5481 states and 18575 transitions. [2021-08-21 13:39:20,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:39:20,814 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:39:20,814 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:39:20,814 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable435 [2021-08-21 13:39:20,814 INFO L402 AbstractCegarLoop]: === Iteration 437 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:39:20,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:39:20,814 INFO L82 PathProgramCache]: Analyzing trace with hash -1425202520, now seen corresponding path program 437 times [2021-08-21 13:39:20,814 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:39:20,814 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1128802881] [2021-08-21 13:39:20,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:39:20,814 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:39:20,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:39:21,102 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:39:21,103 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:39:21,103 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1128802881] [2021-08-21 13:39:21,103 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1128802881] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:39:21,103 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:39:21,103 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 13:39:21,103 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338974383] [2021-08-21 13:39:21,103 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 13:39:21,103 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:39:21,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 13:39:21,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-08-21 13:39:21,104 INFO L87 Difference]: Start difference. First operand 5481 states and 18575 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:39:22,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:39:22,965 INFO L93 Difference]: Finished difference Result 5986 states and 20035 transitions. [2021-08-21 13:39:22,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2021-08-21 13:39:22,965 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:39:22,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:39:22,978 INFO L225 Difference]: With dead ends: 5986 [2021-08-21 13:39:22,978 INFO L226 Difference]: Without dead ends: 5922 [2021-08-21 13:39:22,978 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1001 ImplicationChecksByTransitivity, 1268.8ms TimeCoverageRelationStatistics Valid=350, Invalid=3556, Unknown=0, NotChecked=0, Total=3906 [2021-08-21 13:39:22,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5922 states. [2021-08-21 13:39:23,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5922 to 5457. [2021-08-21 13:39:23,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5457 states, 5456 states have (on average 3.393328445747801) internal successors, (18514), 5456 states have internal predecessors, (18514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:39:23,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5457 states to 5457 states and 18514 transitions. [2021-08-21 13:39:23,065 INFO L78 Accepts]: Start accepts. Automaton has 5457 states and 18514 transitions. Word has length 39 [2021-08-21 13:39:23,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:39:23,065 INFO L470 AbstractCegarLoop]: Abstraction has 5457 states and 18514 transitions. [2021-08-21 13:39:23,065 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:39:23,065 INFO L276 IsEmpty]: Start isEmpty. Operand 5457 states and 18514 transitions. [2021-08-21 13:39:23,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:39:23,073 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:39:23,074 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:39:23,074 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable436 [2021-08-21 13:39:23,074 INFO L402 AbstractCegarLoop]: === Iteration 438 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:39:23,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:39:23,074 INFO L82 PathProgramCache]: Analyzing trace with hash -120347224, now seen corresponding path program 438 times [2021-08-21 13:39:23,074 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:39:23,074 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [697920589] [2021-08-21 13:39:23,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:39:23,074 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:39:23,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:39:23,375 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:39:23,375 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:39:23,376 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [697920589] [2021-08-21 13:39:23,376 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [697920589] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:39:23,376 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:39:23,376 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 13:39:23,376 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1868485892] [2021-08-21 13:39:23,376 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 13:39:23,376 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:39:23,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 13:39:23,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-08-21 13:39:23,376 INFO L87 Difference]: Start difference. First operand 5457 states and 18514 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:39:24,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:39:24,682 INFO L93 Difference]: Finished difference Result 5895 states and 19810 transitions. [2021-08-21 13:39:24,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-08-21 13:39:24,682 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:39:24,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:39:24,696 INFO L225 Difference]: With dead ends: 5895 [2021-08-21 13:39:24,696 INFO L226 Difference]: Without dead ends: 5828 [2021-08-21 13:39:24,697 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 760 ImplicationChecksByTransitivity, 861.7ms TimeCoverageRelationStatistics Valid=296, Invalid=2896, Unknown=0, NotChecked=0, Total=3192 [2021-08-21 13:39:24,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5828 states. [2021-08-21 13:39:24,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5828 to 5475. [2021-08-21 13:39:24,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5475 states, 5474 states have (on average 3.389842893679211) internal successors, (18556), 5474 states have internal predecessors, (18556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:39:24,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5475 states to 5475 states and 18556 transitions. [2021-08-21 13:39:24,796 INFO L78 Accepts]: Start accepts. Automaton has 5475 states and 18556 transitions. Word has length 39 [2021-08-21 13:39:24,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:39:24,796 INFO L470 AbstractCegarLoop]: Abstraction has 5475 states and 18556 transitions. [2021-08-21 13:39:24,796 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:39:24,796 INFO L276 IsEmpty]: Start isEmpty. Operand 5475 states and 18556 transitions. [2021-08-21 13:39:24,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:39:24,805 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:39:24,805 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:39:24,805 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable437 [2021-08-21 13:39:24,805 INFO L402 AbstractCegarLoop]: === Iteration 439 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:39:24,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:39:24,805 INFO L82 PathProgramCache]: Analyzing trace with hash 237722984, now seen corresponding path program 439 times [2021-08-21 13:39:24,805 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:39:24,805 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1626192281] [2021-08-21 13:39:24,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:39:24,806 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:39:24,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:39:25,000 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:39:25,000 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:39:25,000 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1626192281] [2021-08-21 13:39:25,000 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1626192281] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:39:25,000 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:39:25,000 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 13:39:25,000 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [175117631] [2021-08-21 13:39:25,001 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 13:39:25,001 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:39:25,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 13:39:25,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-08-21 13:39:25,001 INFO L87 Difference]: Start difference. First operand 5475 states and 18556 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:39:25,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:39:25,904 INFO L93 Difference]: Finished difference Result 5898 states and 19767 transitions. [2021-08-21 13:39:25,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-08-21 13:39:25,905 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:39:25,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:39:25,919 INFO L225 Difference]: With dead ends: 5898 [2021-08-21 13:39:25,919 INFO L226 Difference]: Without dead ends: 5855 [2021-08-21 13:39:25,920 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 544 ImplicationChecksByTransitivity, 546.6ms TimeCoverageRelationStatistics Valid=245, Invalid=2305, Unknown=0, NotChecked=0, Total=2550 [2021-08-21 13:39:25,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5855 states. [2021-08-21 13:39:26,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5855 to 5493. [2021-08-21 13:39:26,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5493 states, 5492 states have (on average 3.385833940276766) internal successors, (18595), 5492 states have internal predecessors, (18595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:39:26,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5493 states to 5493 states and 18595 transitions. [2021-08-21 13:39:26,023 INFO L78 Accepts]: Start accepts. Automaton has 5493 states and 18595 transitions. Word has length 39 [2021-08-21 13:39:26,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:39:26,023 INFO L470 AbstractCegarLoop]: Abstraction has 5493 states and 18595 transitions. [2021-08-21 13:39:26,023 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:39:26,023 INFO L276 IsEmpty]: Start isEmpty. Operand 5493 states and 18595 transitions. [2021-08-21 13:39:26,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:39:26,032 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:39:26,032 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:39:26,032 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable438 [2021-08-21 13:39:26,032 INFO L402 AbstractCegarLoop]: === Iteration 440 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:39:26,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:39:26,033 INFO L82 PathProgramCache]: Analyzing trace with hash 1067254154, now seen corresponding path program 440 times [2021-08-21 13:39:26,033 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:39:26,033 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [14409544] [2021-08-21 13:39:26,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:39:26,033 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:39:26,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:39:26,313 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:39:26,313 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:39:26,313 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [14409544] [2021-08-21 13:39:26,313 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [14409544] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:39:26,314 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:39:26,314 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 13:39:26,314 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121828262] [2021-08-21 13:39:26,314 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 13:39:26,314 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:39:26,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 13:39:26,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-08-21 13:39:26,314 INFO L87 Difference]: Start difference. First operand 5493 states and 18595 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:39:27,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:39:27,438 INFO L93 Difference]: Finished difference Result 5853 states and 19663 transitions. [2021-08-21 13:39:27,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-08-21 13:39:27,439 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:39:27,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:39:27,452 INFO L225 Difference]: With dead ends: 5853 [2021-08-21 13:39:27,452 INFO L226 Difference]: Without dead ends: 5790 [2021-08-21 13:39:27,453 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 581 ImplicationChecksByTransitivity, 763.3ms TimeCoverageRelationStatistics Valid=250, Invalid=2402, Unknown=0, NotChecked=0, Total=2652 [2021-08-21 13:39:27,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5790 states. [2021-08-21 13:39:27,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5790 to 5475. [2021-08-21 13:39:27,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5475 states, 5474 states have (on average 3.3887468030690537) internal successors, (18550), 5474 states have internal predecessors, (18550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:39:27,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5475 states to 5475 states and 18550 transitions. [2021-08-21 13:39:27,548 INFO L78 Accepts]: Start accepts. Automaton has 5475 states and 18550 transitions. Word has length 39 [2021-08-21 13:39:27,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:39:27,548 INFO L470 AbstractCegarLoop]: Abstraction has 5475 states and 18550 transitions. [2021-08-21 13:39:27,548 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:39:27,548 INFO L276 IsEmpty]: Start isEmpty. Operand 5475 states and 18550 transitions. [2021-08-21 13:39:27,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:39:27,557 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:39:27,557 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:39:27,557 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable439 [2021-08-21 13:39:27,558 INFO L402 AbstractCegarLoop]: === Iteration 441 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:39:27,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:39:27,558 INFO L82 PathProgramCache]: Analyzing trace with hash 1866028038, now seen corresponding path program 441 times [2021-08-21 13:39:27,558 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:39:27,558 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1005293254] [2021-08-21 13:39:27,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:39:27,558 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:39:27,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:39:27,885 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:39:27,885 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:39:27,885 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1005293254] [2021-08-21 13:39:27,885 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1005293254] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:39:27,886 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:39:27,886 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 13:39:27,886 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829995108] [2021-08-21 13:39:27,886 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 13:39:27,886 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:39:27,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 13:39:27,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-08-21 13:39:27,886 INFO L87 Difference]: Start difference. First operand 5475 states and 18550 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:39:29,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:39:29,649 INFO L93 Difference]: Finished difference Result 6043 states and 20131 transitions. [2021-08-21 13:39:29,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2021-08-21 13:39:29,649 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:39:29,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:39:29,664 INFO L225 Difference]: With dead ends: 6043 [2021-08-21 13:39:29,664 INFO L226 Difference]: Without dead ends: 6000 [2021-08-21 13:39:29,664 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 956 ImplicationChecksByTransitivity, 1124.3ms TimeCoverageRelationStatistics Valid=328, Invalid=3454, Unknown=0, NotChecked=0, Total=3782 [2021-08-21 13:39:29,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6000 states. [2021-08-21 13:39:29,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6000 to 5484. [2021-08-21 13:39:29,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5484 states, 5483 states have (on average 3.3875615538938537) internal successors, (18574), 5483 states have internal predecessors, (18574), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:39:29,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5484 states to 5484 states and 18574 transitions. [2021-08-21 13:39:29,761 INFO L78 Accepts]: Start accepts. Automaton has 5484 states and 18574 transitions. Word has length 39 [2021-08-21 13:39:29,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:39:29,761 INFO L470 AbstractCegarLoop]: Abstraction has 5484 states and 18574 transitions. [2021-08-21 13:39:29,761 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:39:29,761 INFO L276 IsEmpty]: Start isEmpty. Operand 5484 states and 18574 transitions. [2021-08-21 13:39:29,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:39:29,771 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:39:29,771 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:39:29,771 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable440 [2021-08-21 13:39:29,771 INFO L402 AbstractCegarLoop]: === Iteration 442 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:39:29,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:39:29,771 INFO L82 PathProgramCache]: Analyzing trace with hash 85429736, now seen corresponding path program 442 times [2021-08-21 13:39:29,771 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:39:29,771 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [987552494] [2021-08-21 13:39:29,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:39:29,771 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:39:29,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:39:30,058 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:39:30,058 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:39:30,058 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [987552494] [2021-08-21 13:39:30,058 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [987552494] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:39:30,058 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:39:30,058 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 13:39:30,058 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1115826164] [2021-08-21 13:39:30,059 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 13:39:30,059 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:39:30,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 13:39:30,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-08-21 13:39:30,059 INFO L87 Difference]: Start difference. First operand 5484 states and 18574 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:39:31,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:39:31,847 INFO L93 Difference]: Finished difference Result 6046 states and 20132 transitions. [2021-08-21 13:39:31,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-08-21 13:39:31,847 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:39:31,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:39:31,861 INFO L225 Difference]: With dead ends: 6046 [2021-08-21 13:39:31,861 INFO L226 Difference]: Without dead ends: 5994 [2021-08-21 13:39:31,861 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 912 ImplicationChecksByTransitivity, 1127.8ms TimeCoverageRelationStatistics Valid=314, Invalid=3346, Unknown=0, NotChecked=0, Total=3660 [2021-08-21 13:39:31,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5994 states. [2021-08-21 13:39:31,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5994 to 5478. [2021-08-21 13:39:31,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5478 states, 5477 states have (on average 3.3883512872010226) internal successors, (18558), 5477 states have internal predecessors, (18558), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:39:31,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5478 states to 5478 states and 18558 transitions. [2021-08-21 13:39:31,948 INFO L78 Accepts]: Start accepts. Automaton has 5478 states and 18558 transitions. Word has length 39 [2021-08-21 13:39:31,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:39:31,948 INFO L470 AbstractCegarLoop]: Abstraction has 5478 states and 18558 transitions. [2021-08-21 13:39:31,948 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:39:31,948 INFO L276 IsEmpty]: Start isEmpty. Operand 5478 states and 18558 transitions. [2021-08-21 13:39:31,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:39:31,955 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:39:31,955 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:39:31,955 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable441 [2021-08-21 13:39:31,956 INFO L402 AbstractCegarLoop]: === Iteration 443 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:39:31,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:39:31,956 INFO L82 PathProgramCache]: Analyzing trace with hash 328608808, now seen corresponding path program 443 times [2021-08-21 13:39:31,956 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:39:31,956 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [281289134] [2021-08-21 13:39:31,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:39:31,956 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:39:31,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:39:32,248 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:39:32,248 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:39:32,248 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [281289134] [2021-08-21 13:39:32,248 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [281289134] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:39:32,249 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:39:32,249 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 13:39:32,249 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812683789] [2021-08-21 13:39:32,249 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 13:39:32,249 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:39:32,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 13:39:32,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-08-21 13:39:32,249 INFO L87 Difference]: Start difference. First operand 5478 states and 18558 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:39:33,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:39:33,498 INFO L93 Difference]: Finished difference Result 5985 states and 19951 transitions. [2021-08-21 13:39:33,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-08-21 13:39:33,499 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:39:33,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:39:33,511 INFO L225 Difference]: With dead ends: 5985 [2021-08-21 13:39:33,511 INFO L226 Difference]: Without dead ends: 5942 [2021-08-21 13:39:33,512 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 544 ImplicationChecksByTransitivity, 824.1ms TimeCoverageRelationStatistics Valid=246, Invalid=2304, Unknown=0, NotChecked=0, Total=2550 [2021-08-21 13:39:33,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5942 states. [2021-08-21 13:39:33,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5942 to 5487. [2021-08-21 13:39:33,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5487 states, 5486 states have (on average 3.386620488516223) internal successors, (18579), 5486 states have internal predecessors, (18579), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:39:33,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5487 states to 5487 states and 18579 transitions. [2021-08-21 13:39:33,592 INFO L78 Accepts]: Start accepts. Automaton has 5487 states and 18579 transitions. Word has length 39 [2021-08-21 13:39:33,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:39:33,592 INFO L470 AbstractCegarLoop]: Abstraction has 5487 states and 18579 transitions. [2021-08-21 13:39:33,592 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:39:33,593 INFO L276 IsEmpty]: Start isEmpty. Operand 5487 states and 18579 transitions. [2021-08-21 13:39:33,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:39:33,601 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:39:33,601 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:39:33,601 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable442 [2021-08-21 13:39:33,601 INFO L402 AbstractCegarLoop]: === Iteration 444 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:39:33,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:39:33,601 INFO L82 PathProgramCache]: Analyzing trace with hash 2078715944, now seen corresponding path program 444 times [2021-08-21 13:39:33,601 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:39:33,601 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2128949002] [2021-08-21 13:39:33,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:39:33,601 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:39:33,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:39:33,895 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:39:33,896 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:39:33,896 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2128949002] [2021-08-21 13:39:33,896 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2128949002] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:39:33,896 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:39:33,896 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 13:39:33,896 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60696449] [2021-08-21 13:39:33,896 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 13:39:33,896 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:39:33,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 13:39:33,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-08-21 13:39:33,897 INFO L87 Difference]: Start difference. First operand 5487 states and 18579 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:39:35,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:39:35,244 INFO L93 Difference]: Finished difference Result 5954 states and 19884 transitions. [2021-08-21 13:39:35,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-08-21 13:39:35,245 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:39:35,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:39:35,257 INFO L225 Difference]: With dead ends: 5954 [2021-08-21 13:39:35,257 INFO L226 Difference]: Without dead ends: 5903 [2021-08-21 13:39:35,258 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 581 ImplicationChecksByTransitivity, 905.1ms TimeCoverageRelationStatistics Valid=251, Invalid=2401, Unknown=0, NotChecked=0, Total=2652 [2021-08-21 13:39:35,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5903 states. [2021-08-21 13:39:35,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5903 to 5481. [2021-08-21 13:39:35,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5481 states, 5480 states have (on average 3.387408759124088) internal successors, (18563), 5480 states have internal predecessors, (18563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:39:35,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5481 states to 5481 states and 18563 transitions. [2021-08-21 13:39:35,339 INFO L78 Accepts]: Start accepts. Automaton has 5481 states and 18563 transitions. Word has length 39 [2021-08-21 13:39:35,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:39:35,339 INFO L470 AbstractCegarLoop]: Abstraction has 5481 states and 18563 transitions. [2021-08-21 13:39:35,339 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:39:35,340 INFO L276 IsEmpty]: Start isEmpty. Operand 5481 states and 18563 transitions. [2021-08-21 13:39:35,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:39:35,347 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:39:35,347 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:39:35,347 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable443 [2021-08-21 13:39:35,347 INFO L402 AbstractCegarLoop]: === Iteration 445 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:39:35,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:39:35,347 INFO L82 PathProgramCache]: Analyzing trace with hash -1599032950, now seen corresponding path program 445 times [2021-08-21 13:39:35,348 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:39:35,348 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1559473728] [2021-08-21 13:39:35,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:39:35,348 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:39:35,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:39:35,637 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:39:35,637 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:39:35,638 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1559473728] [2021-08-21 13:39:35,638 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1559473728] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:39:35,638 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:39:35,638 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 13:39:35,638 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697084352] [2021-08-21 13:39:35,638 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 13:39:35,638 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:39:35,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 13:39:35,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-08-21 13:39:35,638 INFO L87 Difference]: Start difference. First operand 5481 states and 18563 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:39:36,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:39:36,850 INFO L93 Difference]: Finished difference Result 5920 states and 19794 transitions. [2021-08-21 13:39:36,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-08-21 13:39:36,850 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:39:36,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:39:36,863 INFO L225 Difference]: With dead ends: 5920 [2021-08-21 13:39:36,863 INFO L226 Difference]: Without dead ends: 5874 [2021-08-21 13:39:36,864 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 480 ImplicationChecksByTransitivity, 780.7ms TimeCoverageRelationStatistics Valid=225, Invalid=2127, Unknown=0, NotChecked=0, Total=2352 [2021-08-21 13:39:36,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5874 states. [2021-08-21 13:39:36,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5874 to 5488. [2021-08-21 13:39:36,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5488 states, 5487 states have (on average 3.3858210315290687) internal successors, (18578), 5487 states have internal predecessors, (18578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:39:36,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5488 states to 5488 states and 18578 transitions. [2021-08-21 13:39:36,955 INFO L78 Accepts]: Start accepts. Automaton has 5488 states and 18578 transitions. Word has length 39 [2021-08-21 13:39:36,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:39:36,955 INFO L470 AbstractCegarLoop]: Abstraction has 5488 states and 18578 transitions. [2021-08-21 13:39:36,955 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:39:36,956 INFO L276 IsEmpty]: Start isEmpty. Operand 5488 states and 18578 transitions. [2021-08-21 13:39:36,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:39:36,964 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:39:36,964 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:39:36,965 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable444 [2021-08-21 13:39:36,965 INFO L402 AbstractCegarLoop]: === Iteration 446 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:39:36,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:39:36,965 INFO L82 PathProgramCache]: Analyzing trace with hash 1260866856, now seen corresponding path program 446 times [2021-08-21 13:39:36,965 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:39:36,965 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [74044631] [2021-08-21 13:39:36,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:39:36,965 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:39:36,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:39:37,308 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:39:37,308 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:39:37,308 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [74044631] [2021-08-21 13:39:37,308 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [74044631] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:39:37,308 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:39:37,308 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 13:39:37,308 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [663490970] [2021-08-21 13:39:37,308 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 13:39:37,308 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:39:37,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 13:39:37,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-08-21 13:39:37,309 INFO L87 Difference]: Start difference. First operand 5488 states and 18578 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:39:38,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:39:38,605 INFO L93 Difference]: Finished difference Result 5886 states and 19719 transitions. [2021-08-21 13:39:38,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-08-21 13:39:38,606 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:39:38,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:39:38,620 INFO L225 Difference]: With dead ends: 5886 [2021-08-21 13:39:38,620 INFO L226 Difference]: Without dead ends: 5825 [2021-08-21 13:39:38,621 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 545 ImplicationChecksByTransitivity, 838.7ms TimeCoverageRelationStatistics Valid=242, Invalid=2308, Unknown=0, NotChecked=0, Total=2550 [2021-08-21 13:39:38,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5825 states. [2021-08-21 13:39:38,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5825 to 5472. [2021-08-21 13:39:38,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5472 states, 5471 states have (on average 3.3898738804606103) internal successors, (18546), 5471 states have internal predecessors, (18546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:39:38,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5472 states to 5472 states and 18546 transitions. [2021-08-21 13:39:38,726 INFO L78 Accepts]: Start accepts. Automaton has 5472 states and 18546 transitions. Word has length 39 [2021-08-21 13:39:38,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:39:38,726 INFO L470 AbstractCegarLoop]: Abstraction has 5472 states and 18546 transitions. [2021-08-21 13:39:38,726 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:39:38,726 INFO L276 IsEmpty]: Start isEmpty. Operand 5472 states and 18546 transitions. [2021-08-21 13:39:38,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:39:38,736 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:39:38,736 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:39:38,736 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable445 [2021-08-21 13:39:38,736 INFO L402 AbstractCegarLoop]: === Iteration 447 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:39:38,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:39:38,736 INFO L82 PathProgramCache]: Analyzing trace with hash -1026303286, now seen corresponding path program 447 times [2021-08-21 13:39:38,736 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:39:38,736 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1881170985] [2021-08-21 13:39:38,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:39:38,737 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:39:38,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:39:39,030 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:39:39,030 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:39:39,030 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1881170985] [2021-08-21 13:39:39,030 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1881170985] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:39:39,030 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:39:39,030 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 13:39:39,030 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331064303] [2021-08-21 13:39:39,031 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 13:39:39,031 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:39:39,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 13:39:39,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-08-21 13:39:39,031 INFO L87 Difference]: Start difference. First operand 5472 states and 18546 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:39:40,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:39:40,178 INFO L93 Difference]: Finished difference Result 5863 states and 19686 transitions. [2021-08-21 13:39:40,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-08-21 13:39:40,178 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:39:40,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:39:40,191 INFO L225 Difference]: With dead ends: 5863 [2021-08-21 13:39:40,191 INFO L226 Difference]: Without dead ends: 5800 [2021-08-21 13:39:40,192 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 653 ImplicationChecksByTransitivity, 743.7ms TimeCoverageRelationStatistics Valid=283, Invalid=2579, Unknown=0, NotChecked=0, Total=2862 [2021-08-21 13:39:40,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5800 states. [2021-08-21 13:39:40,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5800 to 5476. [2021-08-21 13:39:40,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5476 states, 5475 states have (on average 3.3892237442922375) internal successors, (18556), 5475 states have internal predecessors, (18556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:39:40,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5476 states to 5476 states and 18556 transitions. [2021-08-21 13:39:40,360 INFO L78 Accepts]: Start accepts. Automaton has 5476 states and 18556 transitions. Word has length 39 [2021-08-21 13:39:40,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:39:40,360 INFO L470 AbstractCegarLoop]: Abstraction has 5476 states and 18556 transitions. [2021-08-21 13:39:40,360 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:39:40,360 INFO L276 IsEmpty]: Start isEmpty. Operand 5476 states and 18556 transitions. [2021-08-21 13:39:40,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:39:40,369 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:39:40,369 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:39:40,369 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable446 [2021-08-21 13:39:40,369 INFO L402 AbstractCegarLoop]: === Iteration 448 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:39:40,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:39:40,370 INFO L82 PathProgramCache]: Analyzing trace with hash -1271795384, now seen corresponding path program 448 times [2021-08-21 13:39:40,370 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:39:40,370 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [748291336] [2021-08-21 13:39:40,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:39:40,370 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:39:40,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:39:40,564 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:39:40,564 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:39:40,564 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [748291336] [2021-08-21 13:39:40,592 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [748291336] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:39:40,593 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:39:40,593 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 13:39:40,593 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379859538] [2021-08-21 13:39:40,593 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 13:39:40,593 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:39:40,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 13:39:40,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-08-21 13:39:40,593 INFO L87 Difference]: Start difference. First operand 5476 states and 18556 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:39:41,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:39:41,481 INFO L93 Difference]: Finished difference Result 5914 states and 19807 transitions. [2021-08-21 13:39:41,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-08-21 13:39:41,481 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:39:41,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:39:41,496 INFO L225 Difference]: With dead ends: 5914 [2021-08-21 13:39:41,496 INFO L226 Difference]: Without dead ends: 5871 [2021-08-21 13:39:41,496 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 581 ImplicationChecksByTransitivity, 575.5ms TimeCoverageRelationStatistics Valid=256, Invalid=2396, Unknown=0, NotChecked=0, Total=2652 [2021-08-21 13:39:41,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5871 states. [2021-08-21 13:39:41,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5871 to 5494. [2021-08-21 13:39:41,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5494 states, 5493 states have (on average 3.385217549608593) internal successors, (18595), 5493 states have internal predecessors, (18595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:39:41,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5494 states to 5494 states and 18595 transitions. [2021-08-21 13:39:41,612 INFO L78 Accepts]: Start accepts. Automaton has 5494 states and 18595 transitions. Word has length 39 [2021-08-21 13:39:41,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:39:41,612 INFO L470 AbstractCegarLoop]: Abstraction has 5494 states and 18595 transitions. [2021-08-21 13:39:41,612 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:39:41,612 INFO L276 IsEmpty]: Start isEmpty. Operand 5494 states and 18595 transitions. [2021-08-21 13:39:41,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:39:41,622 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:39:41,622 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:39:41,622 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable447 [2021-08-21 13:39:41,622 INFO L402 AbstractCegarLoop]: === Iteration 449 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:39:41,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:39:41,622 INFO L82 PathProgramCache]: Analyzing trace with hash -442264214, now seen corresponding path program 449 times [2021-08-21 13:39:41,622 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:39:41,623 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [475366337] [2021-08-21 13:39:41,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:39:41,623 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:39:41,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:39:41,822 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:39:41,822 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:39:41,822 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [475366337] [2021-08-21 13:39:41,822 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [475366337] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:39:41,822 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:39:41,822 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 13:39:41,822 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714793811] [2021-08-21 13:39:41,822 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 13:39:41,822 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:39:41,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 13:39:41,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-08-21 13:39:41,823 INFO L87 Difference]: Start difference. First operand 5494 states and 18595 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:39:42,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:39:42,894 INFO L93 Difference]: Finished difference Result 5851 states and 19652 transitions. [2021-08-21 13:39:42,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-08-21 13:39:42,894 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:39:42,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:39:42,908 INFO L225 Difference]: With dead ends: 5851 [2021-08-21 13:39:42,908 INFO L226 Difference]: Without dead ends: 5788 [2021-08-21 13:39:42,909 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 547 ImplicationChecksByTransitivity, 713.7ms TimeCoverageRelationStatistics Valid=240, Invalid=2310, Unknown=0, NotChecked=0, Total=2550 [2021-08-21 13:39:42,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5788 states. [2021-08-21 13:39:42,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5788 to 5476. [2021-08-21 13:39:42,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5476 states, 5475 states have (on average 3.3884931506849316) internal successors, (18552), 5475 states have internal predecessors, (18552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:39:43,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5476 states to 5476 states and 18552 transitions. [2021-08-21 13:39:43,009 INFO L78 Accepts]: Start accepts. Automaton has 5476 states and 18552 transitions. Word has length 39 [2021-08-21 13:39:43,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:39:43,009 INFO L470 AbstractCegarLoop]: Abstraction has 5476 states and 18552 transitions. [2021-08-21 13:39:43,009 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:39:43,009 INFO L276 IsEmpty]: Start isEmpty. Operand 5476 states and 18552 transitions. [2021-08-21 13:39:43,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:39:43,019 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:39:43,019 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:39:43,019 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable448 [2021-08-21 13:39:43,019 INFO L402 AbstractCegarLoop]: === Iteration 450 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:39:43,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:39:43,019 INFO L82 PathProgramCache]: Analyzing trace with hash 1839467274, now seen corresponding path program 450 times [2021-08-21 13:39:43,019 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:39:43,019 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1819665331] [2021-08-21 13:39:43,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:39:43,019 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:39:43,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:39:43,280 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:39:43,280 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:39:43,280 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1819665331] [2021-08-21 13:39:43,280 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1819665331] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:39:43,280 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:39:43,280 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 13:39:43,280 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [801345318] [2021-08-21 13:39:43,280 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 13:39:43,281 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:39:43,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 13:39:43,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-08-21 13:39:43,281 INFO L87 Difference]: Start difference. First operand 5476 states and 18552 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:39:44,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:39:44,510 INFO L93 Difference]: Finished difference Result 5955 states and 19895 transitions. [2021-08-21 13:39:44,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-08-21 13:39:44,510 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:39:44,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:39:44,524 INFO L225 Difference]: With dead ends: 5955 [2021-08-21 13:39:44,524 INFO L226 Difference]: Without dead ends: 5900 [2021-08-21 13:39:44,525 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 687 ImplicationChecksByTransitivity, 811.7ms TimeCoverageRelationStatistics Valid=287, Invalid=2683, Unknown=0, NotChecked=0, Total=2970 [2021-08-21 13:39:44,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5900 states. [2021-08-21 13:39:44,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5900 to 5478. [2021-08-21 13:39:44,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5478 states, 5477 states have (on average 3.3881687054957093) internal successors, (18557), 5477 states have internal predecessors, (18557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:39:44,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5478 states to 5478 states and 18557 transitions. [2021-08-21 13:39:44,628 INFO L78 Accepts]: Start accepts. Automaton has 5478 states and 18557 transitions. Word has length 39 [2021-08-21 13:39:44,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:39:44,629 INFO L470 AbstractCegarLoop]: Abstraction has 5478 states and 18557 transitions. [2021-08-21 13:39:44,629 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:39:44,629 INFO L276 IsEmpty]: Start isEmpty. Operand 5478 states and 18557 transitions. [2021-08-21 13:39:44,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:39:44,638 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:39:44,638 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:39:44,638 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable449 [2021-08-21 13:39:44,638 INFO L402 AbstractCegarLoop]: === Iteration 451 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:39:44,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:39:44,638 INFO L82 PathProgramCache]: Analyzing trace with hash -1118442008, now seen corresponding path program 451 times [2021-08-21 13:39:44,638 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:39:44,638 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [697663879] [2021-08-21 13:39:44,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:39:44,639 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:39:44,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:39:44,970 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:39:44,970 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:39:44,970 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [697663879] [2021-08-21 13:39:44,970 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [697663879] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:39:44,970 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:39:44,970 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 13:39:44,970 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799354021] [2021-08-21 13:39:44,970 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 13:39:44,970 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:39:44,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 13:39:44,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-08-21 13:39:44,971 INFO L87 Difference]: Start difference. First operand 5478 states and 18557 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:39:46,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:39:46,324 INFO L93 Difference]: Finished difference Result 5931 states and 19829 transitions. [2021-08-21 13:39:46,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-08-21 13:39:46,324 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:39:46,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:39:46,339 INFO L225 Difference]: With dead ends: 5931 [2021-08-21 13:39:46,339 INFO L226 Difference]: Without dead ends: 5888 [2021-08-21 13:39:46,340 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 580 ImplicationChecksByTransitivity, 924.2ms TimeCoverageRelationStatistics Valid=258, Invalid=2394, Unknown=0, NotChecked=0, Total=2652 [2021-08-21 13:39:46,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5888 states. [2021-08-21 13:39:46,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5888 to 5484. [2021-08-21 13:39:46,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5484 states, 5483 states have (on average 3.3868320262629945) internal successors, (18570), 5483 states have internal predecessors, (18570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:39:46,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5484 states to 5484 states and 18570 transitions. [2021-08-21 13:39:46,444 INFO L78 Accepts]: Start accepts. Automaton has 5484 states and 18570 transitions. Word has length 39 [2021-08-21 13:39:46,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:39:46,444 INFO L470 AbstractCegarLoop]: Abstraction has 5484 states and 18570 transitions. [2021-08-21 13:39:46,444 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:39:46,444 INFO L276 IsEmpty]: Start isEmpty. Operand 5484 states and 18570 transitions. [2021-08-21 13:39:46,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:39:46,454 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:39:46,454 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:39:46,454 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable450 [2021-08-21 13:39:46,455 INFO L402 AbstractCegarLoop]: === Iteration 452 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:39:46,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:39:46,455 INFO L82 PathProgramCache]: Analyzing trace with hash -1389861558, now seen corresponding path program 452 times [2021-08-21 13:39:46,455 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:39:46,455 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1876544552] [2021-08-21 13:39:46,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:39:46,455 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:39:46,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:39:46,659 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:39:46,659 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:39:46,659 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1876544552] [2021-08-21 13:39:46,659 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1876544552] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:39:46,659 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:39:46,659 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 13:39:46,660 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234441380] [2021-08-21 13:39:46,660 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 13:39:46,660 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:39:46,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 13:39:46,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-08-21 13:39:46,660 INFO L87 Difference]: Start difference. First operand 5484 states and 18570 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:39:47,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:39:47,566 INFO L93 Difference]: Finished difference Result 5900 states and 19762 transitions. [2021-08-21 13:39:47,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-08-21 13:39:47,567 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:39:47,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:39:47,580 INFO L225 Difference]: With dead ends: 5900 [2021-08-21 13:39:47,581 INFO L226 Difference]: Without dead ends: 5849 [2021-08-21 13:39:47,581 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 581 ImplicationChecksByTransitivity, 572.8ms TimeCoverageRelationStatistics Valid=251, Invalid=2401, Unknown=0, NotChecked=0, Total=2652 [2021-08-21 13:39:47,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5849 states. [2021-08-21 13:39:47,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5849 to 5478. [2021-08-21 13:39:47,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5478 states, 5477 states have (on average 3.387803542085083) internal successors, (18555), 5477 states have internal predecessors, (18555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:39:47,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5478 states to 5478 states and 18555 transitions. [2021-08-21 13:39:47,681 INFO L78 Accepts]: Start accepts. Automaton has 5478 states and 18555 transitions. Word has length 39 [2021-08-21 13:39:47,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:39:47,681 INFO L470 AbstractCegarLoop]: Abstraction has 5478 states and 18555 transitions. [2021-08-21 13:39:47,681 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:39:47,681 INFO L276 IsEmpty]: Start isEmpty. Operand 5478 states and 18555 transitions. [2021-08-21 13:39:47,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:39:47,691 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:39:47,691 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:39:47,691 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable451 [2021-08-21 13:39:47,691 INFO L402 AbstractCegarLoop]: === Iteration 453 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:39:47,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:39:47,691 INFO L82 PathProgramCache]: Analyzing trace with hash 673140854, now seen corresponding path program 453 times [2021-08-21 13:39:47,691 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:39:47,691 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1437092430] [2021-08-21 13:39:47,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:39:47,691 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:39:47,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:39:47,889 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:39:47,889 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:39:47,889 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1437092430] [2021-08-21 13:39:47,889 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1437092430] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:39:47,889 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:39:47,889 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 13:39:47,889 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1644380130] [2021-08-21 13:39:47,889 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 13:39:47,889 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:39:47,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 13:39:47,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-08-21 13:39:47,890 INFO L87 Difference]: Start difference. First operand 5478 states and 18555 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:39:50,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:39:50,142 INFO L93 Difference]: Finished difference Result 7629 states and 25607 transitions. [2021-08-21 13:39:50,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2021-08-21 13:39:50,142 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:39:50,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:39:50,160 INFO L225 Difference]: With dead ends: 7629 [2021-08-21 13:39:50,160 INFO L226 Difference]: Without dead ends: 7590 [2021-08-21 13:39:50,161 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1475 ImplicationChecksByTransitivity, 1279.4ms TimeCoverageRelationStatistics Valid=466, Invalid=4790, Unknown=0, NotChecked=0, Total=5256 [2021-08-21 13:39:50,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7590 states. [2021-08-21 13:39:50,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7590 to 5496. [2021-08-21 13:39:50,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5496 states, 5495 states have (on average 3.388898999090082) internal successors, (18622), 5495 states have internal predecessors, (18622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:39:50,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5496 states to 5496 states and 18622 transitions. [2021-08-21 13:39:50,270 INFO L78 Accepts]: Start accepts. Automaton has 5496 states and 18622 transitions. Word has length 39 [2021-08-21 13:39:50,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:39:50,270 INFO L470 AbstractCegarLoop]: Abstraction has 5496 states and 18622 transitions. [2021-08-21 13:39:50,270 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:39:50,270 INFO L276 IsEmpty]: Start isEmpty. Operand 5496 states and 18622 transitions. [2021-08-21 13:39:50,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:39:50,280 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:39:50,280 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:39:50,280 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable452 [2021-08-21 13:39:50,280 INFO L402 AbstractCegarLoop]: === Iteration 454 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:39:50,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:39:50,280 INFO L82 PathProgramCache]: Analyzing trace with hash -1084843560, now seen corresponding path program 454 times [2021-08-21 13:39:50,280 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:39:50,280 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2104914605] [2021-08-21 13:39:50,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:39:50,281 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:39:50,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:39:50,570 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:39:50,571 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:39:50,571 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2104914605] [2021-08-21 13:39:50,571 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2104914605] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:39:50,571 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:39:50,571 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 13:39:50,571 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1341630331] [2021-08-21 13:39:50,571 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 13:39:50,571 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:39:50,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 13:39:50,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-08-21 13:39:50,571 INFO L87 Difference]: Start difference. First operand 5496 states and 18622 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:39:52,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:39:52,953 INFO L93 Difference]: Finished difference Result 7617 states and 25563 transitions. [2021-08-21 13:39:52,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2021-08-21 13:39:52,954 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:39:52,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:39:52,972 INFO L225 Difference]: With dead ends: 7617 [2021-08-21 13:39:52,972 INFO L226 Difference]: Without dead ends: 7562 [2021-08-21 13:39:52,973 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1422 ImplicationChecksByTransitivity, 1366.2ms TimeCoverageRelationStatistics Valid=447, Invalid=4665, Unknown=0, NotChecked=0, Total=5112 [2021-08-21 13:39:52,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7562 states. [2021-08-21 13:39:53,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7562 to 5488. [2021-08-21 13:39:53,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5488 states, 5487 states have (on average 3.3905595042828502) internal successors, (18604), 5487 states have internal predecessors, (18604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:39:53,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5488 states to 5488 states and 18604 transitions. [2021-08-21 13:39:53,078 INFO L78 Accepts]: Start accepts. Automaton has 5488 states and 18604 transitions. Word has length 39 [2021-08-21 13:39:53,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:39:53,078 INFO L470 AbstractCegarLoop]: Abstraction has 5488 states and 18604 transitions. [2021-08-21 13:39:53,078 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:39:53,078 INFO L276 IsEmpty]: Start isEmpty. Operand 5488 states and 18604 transitions. [2021-08-21 13:39:53,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:39:53,087 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:39:53,087 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:39:53,087 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable453 [2021-08-21 13:39:53,087 INFO L402 AbstractCegarLoop]: === Iteration 455 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:39:53,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:39:53,087 INFO L82 PathProgramCache]: Analyzing trace with hash -1488016772, now seen corresponding path program 455 times [2021-08-21 13:39:53,087 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:39:53,087 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [423346826] [2021-08-21 13:39:53,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:39:53,088 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:39:53,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:39:53,375 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:39:53,375 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:39:53,375 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [423346826] [2021-08-21 13:39:53,375 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [423346826] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:39:53,375 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:39:53,375 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 13:39:53,376 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476300084] [2021-08-21 13:39:53,376 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 13:39:53,376 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:39:53,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 13:39:53,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-08-21 13:39:53,376 INFO L87 Difference]: Start difference. First operand 5488 states and 18604 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:39:54,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:39:54,989 INFO L93 Difference]: Finished difference Result 6089 states and 20233 transitions. [2021-08-21 13:39:54,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2021-08-21 13:39:54,990 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:39:54,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:39:55,003 INFO L225 Difference]: With dead ends: 6089 [2021-08-21 13:39:55,003 INFO L226 Difference]: Without dead ends: 6034 [2021-08-21 13:39:55,004 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 868 ImplicationChecksByTransitivity, 1118.1ms TimeCoverageRelationStatistics Valid=334, Invalid=3206, Unknown=0, NotChecked=0, Total=3540 [2021-08-21 13:39:55,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6034 states. [2021-08-21 13:39:55,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6034 to 5493. [2021-08-21 13:39:55,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5493 states, 5492 states have (on average 3.3896576839038604) internal successors, (18616), 5492 states have internal predecessors, (18616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:39:55,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5493 states to 5493 states and 18616 transitions. [2021-08-21 13:39:55,090 INFO L78 Accepts]: Start accepts. Automaton has 5493 states and 18616 transitions. Word has length 39 [2021-08-21 13:39:55,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:39:55,090 INFO L470 AbstractCegarLoop]: Abstraction has 5493 states and 18616 transitions. [2021-08-21 13:39:55,090 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:39:55,090 INFO L276 IsEmpty]: Start isEmpty. Operand 5493 states and 18616 transitions. [2021-08-21 13:39:55,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:39:55,099 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:39:55,099 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:39:55,099 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable454 [2021-08-21 13:39:55,099 INFO L402 AbstractCegarLoop]: === Iteration 456 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:39:55,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:39:55,099 INFO L82 PathProgramCache]: Analyzing trace with hash -315364550, now seen corresponding path program 456 times [2021-08-21 13:39:55,100 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:39:55,100 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1707988077] [2021-08-21 13:39:55,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:39:55,100 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:39:55,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:39:55,388 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:39:55,388 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:39:55,388 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1707988077] [2021-08-21 13:39:55,388 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1707988077] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:39:55,388 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:39:55,388 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 13:39:55,388 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404882165] [2021-08-21 13:39:55,388 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 13:39:55,388 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:39:55,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 13:39:55,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-08-21 13:39:55,389 INFO L87 Difference]: Start difference. First operand 5493 states and 18616 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:39:56,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:39:56,642 INFO L93 Difference]: Finished difference Result 6076 states and 20192 transitions. [2021-08-21 13:39:56,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-08-21 13:39:56,642 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:39:56,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:39:56,656 INFO L225 Difference]: With dead ends: 6076 [2021-08-21 13:39:56,656 INFO L226 Difference]: Without dead ends: 6030 [2021-08-21 13:39:56,657 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 681 ImplicationChecksByTransitivity, 867.5ms TimeCoverageRelationStatistics Valid=283, Invalid=2687, Unknown=0, NotChecked=0, Total=2970 [2021-08-21 13:39:56,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6030 states. [2021-08-21 13:39:56,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6030 to 5499. [2021-08-21 13:39:56,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5499 states, 5498 states have (on average 3.3886867951982538) internal successors, (18631), 5498 states have internal predecessors, (18631), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:39:56,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5499 states to 5499 states and 18631 transitions. [2021-08-21 13:39:56,755 INFO L78 Accepts]: Start accepts. Automaton has 5499 states and 18631 transitions. Word has length 39 [2021-08-21 13:39:56,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:39:56,755 INFO L470 AbstractCegarLoop]: Abstraction has 5499 states and 18631 transitions. [2021-08-21 13:39:56,755 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:39:56,756 INFO L276 IsEmpty]: Start isEmpty. Operand 5499 states and 18631 transitions. [2021-08-21 13:39:56,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:39:56,764 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:39:56,764 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:39:56,765 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable455 [2021-08-21 13:39:56,765 INFO L402 AbstractCegarLoop]: === Iteration 457 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:39:56,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:39:56,765 INFO L82 PathProgramCache]: Analyzing trace with hash -562830712, now seen corresponding path program 457 times [2021-08-21 13:39:56,765 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:39:56,765 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [428871713] [2021-08-21 13:39:56,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:39:56,765 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:39:56,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:39:57,014 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:39:57,014 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:39:57,014 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [428871713] [2021-08-21 13:39:57,014 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [428871713] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:39:57,014 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:39:57,014 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 13:39:57,014 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60704944] [2021-08-21 13:39:57,014 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 13:39:57,014 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:39:57,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 13:39:57,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-08-21 13:39:57,015 INFO L87 Difference]: Start difference. First operand 5499 states and 18631 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:39:58,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:39:58,270 INFO L93 Difference]: Finished difference Result 6036 states and 20099 transitions. [2021-08-21 13:39:58,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-08-21 13:39:58,270 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:39:58,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:39:58,283 INFO L225 Difference]: With dead ends: 6036 [2021-08-21 13:39:58,284 INFO L226 Difference]: Without dead ends: 5991 [2021-08-21 13:39:58,284 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 642 ImplicationChecksByTransitivity, 821.2ms TimeCoverageRelationStatistics Valid=278, Invalid=2584, Unknown=0, NotChecked=0, Total=2862 [2021-08-21 13:39:58,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5991 states. [2021-08-21 13:39:58,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5991 to 5497. [2021-08-21 13:39:58,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5497 states, 5496 states have (on average 3.3891921397379914) internal successors, (18627), 5496 states have internal predecessors, (18627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:39:58,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5497 states to 5497 states and 18627 transitions. [2021-08-21 13:39:58,382 INFO L78 Accepts]: Start accepts. Automaton has 5497 states and 18627 transitions. Word has length 39 [2021-08-21 13:39:58,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:39:58,382 INFO L470 AbstractCegarLoop]: Abstraction has 5497 states and 18627 transitions. [2021-08-21 13:39:58,382 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:39:58,382 INFO L276 IsEmpty]: Start isEmpty. Operand 5497 states and 18627 transitions. [2021-08-21 13:39:58,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:39:58,391 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:39:58,391 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:39:58,391 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable456 [2021-08-21 13:39:58,391 INFO L402 AbstractCegarLoop]: === Iteration 458 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:39:58,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:39:58,392 INFO L82 PathProgramCache]: Analyzing trace with hash -383109430, now seen corresponding path program 458 times [2021-08-21 13:39:58,392 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:39:58,392 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [763386106] [2021-08-21 13:39:58,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:39:58,392 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:39:58,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:39:58,667 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:39:58,668 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:39:58,668 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [763386106] [2021-08-21 13:39:58,668 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [763386106] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:39:58,668 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:39:58,668 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 13:39:58,669 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617858058] [2021-08-21 13:39:58,670 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 13:39:58,670 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:39:58,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 13:39:58,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-08-21 13:39:58,670 INFO L87 Difference]: Start difference. First operand 5497 states and 18627 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:40:00,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:40:00,118 INFO L93 Difference]: Finished difference Result 6095 states and 20249 transitions. [2021-08-21 13:40:00,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-08-21 13:40:00,119 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:40:00,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:40:00,132 INFO L225 Difference]: With dead ends: 6095 [2021-08-21 13:40:00,132 INFO L226 Difference]: Without dead ends: 6052 [2021-08-21 13:40:00,133 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 758 ImplicationChecksByTransitivity, 949.9ms TimeCoverageRelationStatistics Valid=297, Invalid=2895, Unknown=0, NotChecked=0, Total=3192 [2021-08-21 13:40:00,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6052 states. [2021-08-21 13:40:00,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6052 to 5506. [2021-08-21 13:40:00,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5506 states, 5505 states have (on average 3.3874659400544957) internal successors, (18648), 5505 states have internal predecessors, (18648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:40:00,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5506 states to 5506 states and 18648 transitions. [2021-08-21 13:40:00,232 INFO L78 Accepts]: Start accepts. Automaton has 5506 states and 18648 transitions. Word has length 39 [2021-08-21 13:40:00,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:40:00,232 INFO L470 AbstractCegarLoop]: Abstraction has 5506 states and 18648 transitions. [2021-08-21 13:40:00,232 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:40:00,232 INFO L276 IsEmpty]: Start isEmpty. Operand 5506 states and 18648 transitions. [2021-08-21 13:40:00,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:40:00,270 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:40:00,270 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:40:00,270 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable457 [2021-08-21 13:40:00,270 INFO L402 AbstractCegarLoop]: === Iteration 459 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:40:00,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:40:00,270 INFO L82 PathProgramCache]: Analyzing trace with hash 1366997706, now seen corresponding path program 459 times [2021-08-21 13:40:00,270 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:40:00,270 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2053216829] [2021-08-21 13:40:00,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:40:00,271 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:40:00,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:40:00,563 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:40:00,563 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:40:00,563 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2053216829] [2021-08-21 13:40:00,563 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2053216829] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:40:00,563 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:40:00,564 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 13:40:00,564 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409044332] [2021-08-21 13:40:00,564 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 13:40:00,564 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:40:00,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 13:40:00,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-08-21 13:40:00,564 INFO L87 Difference]: Start difference. First operand 5506 states and 18648 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:40:01,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:40:01,939 INFO L93 Difference]: Finished difference Result 6062 states and 20171 transitions. [2021-08-21 13:40:01,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-08-21 13:40:01,940 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:40:01,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:40:01,955 INFO L225 Difference]: With dead ends: 6062 [2021-08-21 13:40:01,955 INFO L226 Difference]: Without dead ends: 6011 [2021-08-21 13:40:01,956 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 684 ImplicationChecksByTransitivity, 901.3ms TimeCoverageRelationStatistics Valid=274, Invalid=2696, Unknown=0, NotChecked=0, Total=2970 [2021-08-21 13:40:01,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6011 states. [2021-08-21 13:40:02,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6011 to 5506. [2021-08-21 13:40:02,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5506 states, 5505 states have (on average 3.3869209809264307) internal successors, (18645), 5505 states have internal predecessors, (18645), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:40:02,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5506 states to 5506 states and 18645 transitions. [2021-08-21 13:40:02,070 INFO L78 Accepts]: Start accepts. Automaton has 5506 states and 18645 transitions. Word has length 39 [2021-08-21 13:40:02,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:40:02,070 INFO L470 AbstractCegarLoop]: Abstraction has 5506 states and 18645 transitions. [2021-08-21 13:40:02,070 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:40:02,070 INFO L276 IsEmpty]: Start isEmpty. Operand 5506 states and 18645 transitions. [2021-08-21 13:40:02,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:40:02,081 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:40:02,081 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:40:02,081 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable458 [2021-08-21 13:40:02,081 INFO L402 AbstractCegarLoop]: === Iteration 460 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:40:02,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:40:02,081 INFO L82 PathProgramCache]: Analyzing trace with hash 1984216108, now seen corresponding path program 460 times [2021-08-21 13:40:02,081 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:40:02,081 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1751545486] [2021-08-21 13:40:02,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:40:02,081 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:40:02,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:40:02,380 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:40:02,380 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:40:02,380 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1751545486] [2021-08-21 13:40:02,380 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1751545486] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:40:02,380 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:40:02,380 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 13:40:02,380 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682296616] [2021-08-21 13:40:02,380 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 13:40:02,380 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:40:02,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 13:40:02,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-08-21 13:40:02,381 INFO L87 Difference]: Start difference. First operand 5506 states and 18645 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:40:03,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:40:03,920 INFO L93 Difference]: Finished difference Result 6079 states and 20196 transitions. [2021-08-21 13:40:03,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-08-21 13:40:03,920 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:40:03,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:40:03,936 INFO L225 Difference]: With dead ends: 6079 [2021-08-21 13:40:03,936 INFO L226 Difference]: Without dead ends: 6033 [2021-08-21 13:40:03,937 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 613 ImplicationChecksByTransitivity, 951.4ms TimeCoverageRelationStatistics Valid=257, Invalid=2499, Unknown=0, NotChecked=0, Total=2756 [2021-08-21 13:40:03,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6033 states. [2021-08-21 13:40:04,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6033 to 5513. [2021-08-21 13:40:04,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5513 states, 5512 states have (on average 3.385341074020319) internal successors, (18660), 5512 states have internal predecessors, (18660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:40:04,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5513 states to 5513 states and 18660 transitions. [2021-08-21 13:40:04,042 INFO L78 Accepts]: Start accepts. Automaton has 5513 states and 18660 transitions. Word has length 39 [2021-08-21 13:40:04,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:40:04,042 INFO L470 AbstractCegarLoop]: Abstraction has 5513 states and 18660 transitions. [2021-08-21 13:40:04,043 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:40:04,043 INFO L276 IsEmpty]: Start isEmpty. Operand 5513 states and 18660 transitions. [2021-08-21 13:40:04,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:40:04,052 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:40:04,052 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:40:04,052 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable459 [2021-08-21 13:40:04,052 INFO L402 AbstractCegarLoop]: === Iteration 461 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:40:04,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:40:04,053 INFO L82 PathProgramCache]: Analyzing trace with hash 549148618, now seen corresponding path program 461 times [2021-08-21 13:40:04,053 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:40:04,053 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [849575836] [2021-08-21 13:40:04,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:40:04,053 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:40:04,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:40:04,345 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:40:04,346 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:40:04,346 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [849575836] [2021-08-21 13:40:04,346 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [849575836] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:40:04,346 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:40:04,346 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 13:40:04,346 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105195472] [2021-08-21 13:40:04,346 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 13:40:04,346 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:40:04,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 13:40:04,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-08-21 13:40:04,347 INFO L87 Difference]: Start difference. First operand 5513 states and 18660 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:40:05,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:40:05,541 INFO L93 Difference]: Finished difference Result 6048 states and 20124 transitions. [2021-08-21 13:40:05,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-08-21 13:40:05,541 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:40:05,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:40:05,558 INFO L225 Difference]: With dead ends: 6048 [2021-08-21 13:40:05,558 INFO L226 Difference]: Without dead ends: 5993 [2021-08-21 13:40:05,558 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 649 ImplicationChecksByTransitivity, 774.1ms TimeCoverageRelationStatistics Valid=264, Invalid=2598, Unknown=0, NotChecked=0, Total=2862 [2021-08-21 13:40:05,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5993 states. [2021-08-21 13:40:05,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5993 to 5510. [2021-08-21 13:40:05,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5510 states, 5509 states have (on average 3.3860954801234344) internal successors, (18654), 5509 states have internal predecessors, (18654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:40:05,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5510 states to 5510 states and 18654 transitions. [2021-08-21 13:40:05,674 INFO L78 Accepts]: Start accepts. Automaton has 5510 states and 18654 transitions. Word has length 39 [2021-08-21 13:40:05,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:40:05,674 INFO L470 AbstractCegarLoop]: Abstraction has 5510 states and 18654 transitions. [2021-08-21 13:40:05,674 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:40:05,674 INFO L276 IsEmpty]: Start isEmpty. Operand 5510 states and 18654 transitions. [2021-08-21 13:40:05,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:40:05,684 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:40:05,684 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:40:05,684 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable460 [2021-08-21 13:40:05,685 INFO L402 AbstractCegarLoop]: === Iteration 462 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:40:05,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:40:05,685 INFO L82 PathProgramCache]: Analyzing trace with hash -733554500, now seen corresponding path program 462 times [2021-08-21 13:40:05,685 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:40:05,685 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [652745096] [2021-08-21 13:40:05,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:40:05,685 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:40:05,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:40:05,885 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:40:05,885 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:40:05,885 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [652745096] [2021-08-21 13:40:05,885 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [652745096] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:40:05,885 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:40:05,885 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 13:40:05,885 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698740372] [2021-08-21 13:40:05,885 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 13:40:05,885 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:40:05,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 13:40:05,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-08-21 13:40:05,886 INFO L87 Difference]: Start difference. First operand 5510 states and 18654 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:40:06,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:40:06,881 INFO L93 Difference]: Finished difference Result 6032 states and 20084 transitions. [2021-08-21 13:40:06,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-08-21 13:40:06,881 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:40:06,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:40:06,895 INFO L225 Difference]: With dead ends: 6032 [2021-08-21 13:40:06,895 INFO L226 Difference]: Without dead ends: 5981 [2021-08-21 13:40:06,896 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 648 ImplicationChecksByTransitivity, 655.2ms TimeCoverageRelationStatistics Valid=266, Invalid=2596, Unknown=0, NotChecked=0, Total=2862 [2021-08-21 13:40:06,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5981 states. [2021-08-21 13:40:06,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5981 to 5504. [2021-08-21 13:40:06,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5504 states, 5503 states have (on average 3.3870616027621296) internal successors, (18639), 5503 states have internal predecessors, (18639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:40:06,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5504 states to 5504 states and 18639 transitions. [2021-08-21 13:40:06,994 INFO L78 Accepts]: Start accepts. Automaton has 5504 states and 18639 transitions. Word has length 39 [2021-08-21 13:40:06,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:40:06,994 INFO L470 AbstractCegarLoop]: Abstraction has 5504 states and 18639 transitions. [2021-08-21 13:40:06,994 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:40:06,995 INFO L276 IsEmpty]: Start isEmpty. Operand 5504 states and 18639 transitions. [2021-08-21 13:40:07,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:40:07,004 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:40:07,004 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:40:07,004 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable461 [2021-08-21 13:40:07,004 INFO L402 AbstractCegarLoop]: === Iteration 463 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:40:07,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:40:07,004 INFO L82 PathProgramCache]: Analyzing trace with hash -359221992, now seen corresponding path program 463 times [2021-08-21 13:40:07,004 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:40:07,004 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1359750998] [2021-08-21 13:40:07,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:40:07,005 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:40:07,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:40:07,203 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:40:07,203 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:40:07,203 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1359750998] [2021-08-21 13:40:07,203 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1359750998] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:40:07,203 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:40:07,203 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 13:40:07,203 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747923335] [2021-08-21 13:40:07,203 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 13:40:07,203 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:40:07,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 13:40:07,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-08-21 13:40:07,204 INFO L87 Difference]: Start difference. First operand 5504 states and 18639 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:40:10,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:40:10,272 INFO L93 Difference]: Finished difference Result 9334 states and 31252 transitions. [2021-08-21 13:40:10,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2021-08-21 13:40:10,272 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:40:10,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:40:10,294 INFO L225 Difference]: With dead ends: 9334 [2021-08-21 13:40:10,295 INFO L226 Difference]: Without dead ends: 9295 [2021-08-21 13:40:10,296 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2864 ImplicationChecksByTransitivity, 1846.4ms TimeCoverageRelationStatistics Valid=728, Invalid=8202, Unknown=0, NotChecked=0, Total=8930 [2021-08-21 13:40:10,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9295 states. [2021-08-21 13:40:10,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9295 to 5527. [2021-08-21 13:40:10,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5527 states, 5526 states have (on average 3.388888888888889) internal successors, (18727), 5526 states have internal predecessors, (18727), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:40:10,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5527 states to 5527 states and 18727 transitions. [2021-08-21 13:40:10,415 INFO L78 Accepts]: Start accepts. Automaton has 5527 states and 18727 transitions. Word has length 39 [2021-08-21 13:40:10,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:40:10,415 INFO L470 AbstractCegarLoop]: Abstraction has 5527 states and 18727 transitions. [2021-08-21 13:40:10,415 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:40:10,415 INFO L276 IsEmpty]: Start isEmpty. Operand 5527 states and 18727 transitions. [2021-08-21 13:40:10,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:40:10,424 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:40:10,424 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:40:10,424 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable462 [2021-08-21 13:40:10,424 INFO L402 AbstractCegarLoop]: === Iteration 464 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:40:10,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:40:10,425 INFO L82 PathProgramCache]: Analyzing trace with hash -2117206406, now seen corresponding path program 464 times [2021-08-21 13:40:10,425 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:40:10,425 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1772829546] [2021-08-21 13:40:10,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:40:10,425 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:40:10,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:40:10,721 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:40:10,722 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:40:10,722 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1772829546] [2021-08-21 13:40:10,722 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1772829546] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:40:10,722 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:40:10,722 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 13:40:10,722 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105901118] [2021-08-21 13:40:10,722 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 13:40:10,722 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:40:10,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 13:40:10,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-08-21 13:40:10,722 INFO L87 Difference]: Start difference. First operand 5527 states and 18727 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:40:14,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:40:14,118 INFO L93 Difference]: Finished difference Result 9304 states and 31151 transitions. [2021-08-21 13:40:14,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2021-08-21 13:40:14,118 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:40:14,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:40:14,142 INFO L225 Difference]: With dead ends: 9304 [2021-08-21 13:40:14,142 INFO L226 Difference]: Without dead ends: 9253 [2021-08-21 13:40:14,143 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2786 ImplicationChecksByTransitivity, 2087.0ms TimeCoverageRelationStatistics Valid=706, Invalid=8036, Unknown=0, NotChecked=0, Total=8742 [2021-08-21 13:40:14,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9253 states. [2021-08-21 13:40:14,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9253 to 5523. [2021-08-21 13:40:14,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5523 states, 5522 states have (on average 3.3893516841724014) internal successors, (18716), 5522 states have internal predecessors, (18716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:40:14,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5523 states to 5523 states and 18716 transitions. [2021-08-21 13:40:14,263 INFO L78 Accepts]: Start accepts. Automaton has 5523 states and 18716 transitions. Word has length 39 [2021-08-21 13:40:14,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:40:14,263 INFO L470 AbstractCegarLoop]: Abstraction has 5523 states and 18716 transitions. [2021-08-21 13:40:14,263 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:40:14,264 INFO L276 IsEmpty]: Start isEmpty. Operand 5523 states and 18716 transitions. [2021-08-21 13:40:14,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:40:14,273 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:40:14,273 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:40:14,273 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable463 [2021-08-21 13:40:14,273 INFO L402 AbstractCegarLoop]: === Iteration 465 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:40:14,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:40:14,273 INFO L82 PathProgramCache]: Analyzing trace with hash 7177126, now seen corresponding path program 465 times [2021-08-21 13:40:14,273 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:40:14,273 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2137799240] [2021-08-21 13:40:14,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:40:14,273 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:40:14,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:40:14,563 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:40:14,563 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:40:14,563 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2137799240] [2021-08-21 13:40:14,563 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2137799240] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:40:14,563 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:40:14,563 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 13:40:14,563 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1401674519] [2021-08-21 13:40:14,563 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 13:40:14,563 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:40:14,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 13:40:14,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-08-21 13:40:14,564 INFO L87 Difference]: Start difference. First operand 5523 states and 18716 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:40:15,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:40:15,933 INFO L93 Difference]: Finished difference Result 5978 states and 19989 transitions. [2021-08-21 13:40:15,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-08-21 13:40:15,933 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:40:15,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:40:15,948 INFO L225 Difference]: With dead ends: 5978 [2021-08-21 13:40:15,948 INFO L226 Difference]: Without dead ends: 5935 [2021-08-21 13:40:15,948 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 576 ImplicationChecksByTransitivity, 870.5ms TimeCoverageRelationStatistics Valid=253, Invalid=2399, Unknown=0, NotChecked=0, Total=2652 [2021-08-21 13:40:15,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5935 states. [2021-08-21 13:40:16,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5935 to 5519. [2021-08-21 13:40:16,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5519 states, 5518 states have (on average 3.389996375498369) internal successors, (18706), 5518 states have internal predecessors, (18706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:40:16,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5519 states to 5519 states and 18706 transitions. [2021-08-21 13:40:16,054 INFO L78 Accepts]: Start accepts. Automaton has 5519 states and 18706 transitions. Word has length 39 [2021-08-21 13:40:16,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:40:16,054 INFO L470 AbstractCegarLoop]: Abstraction has 5519 states and 18706 transitions. [2021-08-21 13:40:16,054 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:40:16,054 INFO L276 IsEmpty]: Start isEmpty. Operand 5519 states and 18706 transitions. [2021-08-21 13:40:16,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:40:16,064 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:40:16,064 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:40:16,064 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable464 [2021-08-21 13:40:16,064 INFO L402 AbstractCegarLoop]: === Iteration 466 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:40:16,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:40:16,064 INFO L82 PathProgramCache]: Analyzing trace with hash 1843934616, now seen corresponding path program 466 times [2021-08-21 13:40:16,064 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:40:16,064 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [209472529] [2021-08-21 13:40:16,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:40:16,064 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:40:16,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:40:16,357 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:40:16,358 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:40:16,358 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [209472529] [2021-08-21 13:40:16,358 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [209472529] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:40:16,358 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:40:16,358 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 13:40:16,358 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726031890] [2021-08-21 13:40:16,358 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 13:40:16,358 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:40:16,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 13:40:16,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-08-21 13:40:16,358 INFO L87 Difference]: Start difference. First operand 5519 states and 18706 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:40:17,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:40:17,681 INFO L93 Difference]: Finished difference Result 5986 states and 20009 transitions. [2021-08-21 13:40:17,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-08-21 13:40:17,681 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:40:17,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:40:17,696 INFO L225 Difference]: With dead ends: 5986 [2021-08-21 13:40:17,696 INFO L226 Difference]: Without dead ends: 5925 [2021-08-21 13:40:17,697 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 612 ImplicationChecksByTransitivity, 860.9ms TimeCoverageRelationStatistics Valid=256, Invalid=2500, Unknown=0, NotChecked=0, Total=2756 [2021-08-21 13:40:17,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5925 states. [2021-08-21 13:40:17,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5925 to 5507. [2021-08-21 13:40:17,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5507 states, 5506 states have (on average 3.3928441699963674) internal successors, (18681), 5506 states have internal predecessors, (18681), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:40:17,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5507 states to 5507 states and 18681 transitions. [2021-08-21 13:40:17,797 INFO L78 Accepts]: Start accepts. Automaton has 5507 states and 18681 transitions. Word has length 39 [2021-08-21 13:40:17,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:40:17,797 INFO L470 AbstractCegarLoop]: Abstraction has 5507 states and 18681 transitions. [2021-08-21 13:40:17,797 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:40:17,797 INFO L276 IsEmpty]: Start isEmpty. Operand 5507 states and 18681 transitions. [2021-08-21 13:40:17,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:40:17,807 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:40:17,807 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:40:17,807 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable465 [2021-08-21 13:40:17,807 INFO L402 AbstractCegarLoop]: === Iteration 467 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:40:17,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:40:17,807 INFO L82 PathProgramCache]: Analyzing trace with hash 1150969480, now seen corresponding path program 467 times [2021-08-21 13:40:17,807 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:40:17,807 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1072575317] [2021-08-21 13:40:17,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:40:17,808 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:40:17,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:40:18,098 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:40:18,098 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:40:18,098 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1072575317] [2021-08-21 13:40:18,098 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1072575317] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:40:18,098 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:40:18,098 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 13:40:18,098 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408657093] [2021-08-21 13:40:18,098 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 13:40:18,099 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:40:18,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 13:40:18,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-08-21 13:40:18,099 INFO L87 Difference]: Start difference. First operand 5507 states and 18681 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:40:19,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:40:19,466 INFO L93 Difference]: Finished difference Result 5933 states and 19890 transitions. [2021-08-21 13:40:19,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-08-21 13:40:19,466 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:40:19,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:40:19,480 INFO L225 Difference]: With dead ends: 5933 [2021-08-21 13:40:19,481 INFO L226 Difference]: Without dead ends: 5870 [2021-08-21 13:40:19,481 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 479 ImplicationChecksByTransitivity, 826.0ms TimeCoverageRelationStatistics Valid=225, Invalid=2127, Unknown=0, NotChecked=0, Total=2352 [2021-08-21 13:40:19,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5870 states. [2021-08-21 13:40:19,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5870 to 5595. [2021-08-21 13:40:19,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5595 states, 5594 states have (on average 3.3841616017161242) internal successors, (18931), 5594 states have internal predecessors, (18931), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:40:19,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5595 states to 5595 states and 18931 transitions. [2021-08-21 13:40:19,588 INFO L78 Accepts]: Start accepts. Automaton has 5595 states and 18931 transitions. Word has length 39 [2021-08-21 13:40:19,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:40:19,588 INFO L470 AbstractCegarLoop]: Abstraction has 5595 states and 18931 transitions. [2021-08-21 13:40:19,588 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:40:19,588 INFO L276 IsEmpty]: Start isEmpty. Operand 5595 states and 18931 transitions. [2021-08-21 13:40:19,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:40:19,598 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:40:19,598 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:40:19,598 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable466 [2021-08-21 13:40:19,599 INFO L402 AbstractCegarLoop]: === Iteration 468 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:40:19,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:40:19,599 INFO L82 PathProgramCache]: Analyzing trace with hash 621069032, now seen corresponding path program 468 times [2021-08-21 13:40:19,599 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:40:19,599 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1706686402] [2021-08-21 13:40:19,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:40:19,599 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:40:19,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:40:19,889 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:40:19,889 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:40:19,889 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1706686402] [2021-08-21 13:40:19,889 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1706686402] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:40:19,890 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:40:19,890 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 13:40:19,890 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [244200453] [2021-08-21 13:40:19,890 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 13:40:19,890 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:40:19,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 13:40:19,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-08-21 13:40:19,890 INFO L87 Difference]: Start difference. First operand 5595 states and 18931 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:40:21,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:40:21,147 INFO L93 Difference]: Finished difference Result 5888 states and 19784 transitions. [2021-08-21 13:40:21,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-08-21 13:40:21,147 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:40:21,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:40:21,162 INFO L225 Difference]: With dead ends: 5888 [2021-08-21 13:40:21,162 INFO L226 Difference]: Without dead ends: 5765 [2021-08-21 13:40:21,162 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 420 ImplicationChecksByTransitivity, 779.0ms TimeCoverageRelationStatistics Valid=207, Invalid=1955, Unknown=0, NotChecked=0, Total=2162 [2021-08-21 13:40:21,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5765 states. [2021-08-21 13:40:21,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5765 to 5563. [2021-08-21 13:40:21,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5563 states, 5562 states have (on average 3.383495145631068) internal successors, (18819), 5562 states have internal predecessors, (18819), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:40:21,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5563 states to 5563 states and 18819 transitions. [2021-08-21 13:40:21,267 INFO L78 Accepts]: Start accepts. Automaton has 5563 states and 18819 transitions. Word has length 39 [2021-08-21 13:40:21,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:40:21,267 INFO L470 AbstractCegarLoop]: Abstraction has 5563 states and 18819 transitions. [2021-08-21 13:40:21,267 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:40:21,267 INFO L276 IsEmpty]: Start isEmpty. Operand 5563 states and 18819 transitions. [2021-08-21 13:40:21,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:40:21,277 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:40:21,277 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:40:21,277 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable467 [2021-08-21 13:40:21,277 INFO L402 AbstractCegarLoop]: === Iteration 469 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:40:21,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:40:21,277 INFO L82 PathProgramCache]: Analyzing trace with hash 118606634, now seen corresponding path program 469 times [2021-08-21 13:40:21,277 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:40:21,277 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1928856784] [2021-08-21 13:40:21,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:40:21,278 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:40:21,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:40:21,572 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:40:21,572 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:40:21,573 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1928856784] [2021-08-21 13:40:21,573 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1928856784] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:40:21,573 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:40:21,573 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 13:40:21,573 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [8294451] [2021-08-21 13:40:21,573 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 13:40:21,573 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:40:21,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 13:40:21,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-08-21 13:40:21,573 INFO L87 Difference]: Start difference. First operand 5563 states and 18819 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:40:22,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:40:22,550 INFO L93 Difference]: Finished difference Result 5872 states and 19734 transitions. [2021-08-21 13:40:22,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-08-21 13:40:22,550 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:40:22,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:40:22,563 INFO L225 Difference]: With dead ends: 5872 [2021-08-21 13:40:22,564 INFO L226 Difference]: Without dead ends: 5809 [2021-08-21 13:40:22,564 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 482 ImplicationChecksByTransitivity, 636.0ms TimeCoverageRelationStatistics Valid=231, Invalid=2121, Unknown=0, NotChecked=0, Total=2352 [2021-08-21 13:40:22,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5809 states. [2021-08-21 13:40:22,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5809 to 5563. [2021-08-21 13:40:22,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5563 states, 5562 states have (on average 3.3827759798633585) internal successors, (18815), 5562 states have internal predecessors, (18815), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:40:22,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5563 states to 5563 states and 18815 transitions. [2021-08-21 13:40:22,647 INFO L78 Accepts]: Start accepts. Automaton has 5563 states and 18815 transitions. Word has length 39 [2021-08-21 13:40:22,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:40:22,647 INFO L470 AbstractCegarLoop]: Abstraction has 5563 states and 18815 transitions. [2021-08-21 13:40:22,647 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:40:22,647 INFO L276 IsEmpty]: Start isEmpty. Operand 5563 states and 18815 transitions. [2021-08-21 13:40:22,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:40:22,655 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:40:22,655 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:40:22,655 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable468 [2021-08-21 13:40:22,655 INFO L402 AbstractCegarLoop]: === Iteration 470 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:40:22,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:40:22,656 INFO L82 PathProgramCache]: Analyzing trace with hash -126885464, now seen corresponding path program 470 times [2021-08-21 13:40:22,656 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:40:22,656 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [879192377] [2021-08-21 13:40:22,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:40:22,656 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:40:22,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:40:22,887 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:40:22,887 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:40:22,887 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [879192377] [2021-08-21 13:40:22,887 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [879192377] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:40:22,887 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:40:22,887 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 13:40:22,887 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455250756] [2021-08-21 13:40:22,887 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 13:40:22,887 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:40:22,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 13:40:22,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-08-21 13:40:22,888 INFO L87 Difference]: Start difference. First operand 5563 states and 18815 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:40:24,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:40:24,001 INFO L93 Difference]: Finished difference Result 5889 states and 19760 transitions. [2021-08-21 13:40:24,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-08-21 13:40:24,001 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:40:24,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:40:24,016 INFO L225 Difference]: With dead ends: 5889 [2021-08-21 13:40:24,016 INFO L226 Difference]: Without dead ends: 5846 [2021-08-21 13:40:24,017 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 424 ImplicationChecksByTransitivity, 664.5ms TimeCoverageRelationStatistics Valid=206, Invalid=1956, Unknown=0, NotChecked=0, Total=2162 [2021-08-21 13:40:24,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5846 states. [2021-08-21 13:40:24,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5846 to 5569. [2021-08-21 13:40:24,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5569 states, 5568 states have (on average 3.3814655172413794) internal successors, (18828), 5568 states have internal predecessors, (18828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:40:24,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5569 states to 5569 states and 18828 transitions. [2021-08-21 13:40:24,135 INFO L78 Accepts]: Start accepts. Automaton has 5569 states and 18828 transitions. Word has length 39 [2021-08-21 13:40:24,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:40:24,135 INFO L470 AbstractCegarLoop]: Abstraction has 5569 states and 18828 transitions. [2021-08-21 13:40:24,136 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:40:24,136 INFO L276 IsEmpty]: Start isEmpty. Operand 5569 states and 18828 transitions. [2021-08-21 13:40:24,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:40:24,146 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:40:24,146 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:40:24,146 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable469 [2021-08-21 13:40:24,146 INFO L402 AbstractCegarLoop]: === Iteration 471 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:40:24,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:40:24,146 INFO L82 PathProgramCache]: Analyzing trace with hash 702645706, now seen corresponding path program 471 times [2021-08-21 13:40:24,146 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:40:24,146 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [754765940] [2021-08-21 13:40:24,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:40:24,147 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:40:24,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:40:24,362 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:40:24,362 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:40:24,362 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [754765940] [2021-08-21 13:40:24,363 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [754765940] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:40:24,363 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:40:24,363 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 13:40:24,363 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1862736550] [2021-08-21 13:40:24,363 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 13:40:24,363 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:40:24,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 13:40:24,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-08-21 13:40:24,363 INFO L87 Difference]: Start difference. First operand 5569 states and 18828 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:40:25,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:40:25,211 INFO L93 Difference]: Finished difference Result 5844 states and 19656 transitions. [2021-08-21 13:40:25,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-08-21 13:40:25,211 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:40:25,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:40:25,225 INFO L225 Difference]: With dead ends: 5844 [2021-08-21 13:40:25,225 INFO L226 Difference]: Without dead ends: 5781 [2021-08-21 13:40:25,226 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 395 ImplicationChecksByTransitivity, 555.8ms TimeCoverageRelationStatistics Valid=197, Invalid=1873, Unknown=0, NotChecked=0, Total=2070 [2021-08-21 13:40:25,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5781 states. [2021-08-21 13:40:25,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5781 to 5551. [2021-08-21 13:40:25,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5551 states, 5550 states have (on average 3.3846846846846845) internal successors, (18785), 5550 states have internal predecessors, (18785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:40:25,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5551 states to 5551 states and 18785 transitions. [2021-08-21 13:40:25,316 INFO L78 Accepts]: Start accepts. Automaton has 5551 states and 18785 transitions. Word has length 39 [2021-08-21 13:40:25,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:40:25,316 INFO L470 AbstractCegarLoop]: Abstraction has 5551 states and 18785 transitions. [2021-08-21 13:40:25,316 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:40:25,316 INFO L276 IsEmpty]: Start isEmpty. Operand 5551 states and 18785 transitions. [2021-08-21 13:40:25,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:40:25,325 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:40:25,325 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:40:25,325 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable470 [2021-08-21 13:40:25,325 INFO L402 AbstractCegarLoop]: === Iteration 472 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:40:25,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:40:25,325 INFO L82 PathProgramCache]: Analyzing trace with hash -1310590102, now seen corresponding path program 472 times [2021-08-21 13:40:25,325 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:40:25,325 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [417653290] [2021-08-21 13:40:25,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:40:25,326 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:40:25,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:40:25,520 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:40:25,520 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:40:25,520 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [417653290] [2021-08-21 13:40:25,521 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [417653290] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:40:25,521 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:40:25,521 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 13:40:25,521 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [887486640] [2021-08-21 13:40:25,521 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 13:40:25,521 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:40:25,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 13:40:25,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-08-21 13:40:25,521 INFO L87 Difference]: Start difference. First operand 5551 states and 18785 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:40:26,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:40:26,375 INFO L93 Difference]: Finished difference Result 5948 states and 19899 transitions. [2021-08-21 13:40:26,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-08-21 13:40:26,375 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:40:26,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:40:26,389 INFO L225 Difference]: With dead ends: 5948 [2021-08-21 13:40:26,389 INFO L226 Difference]: Without dead ends: 5893 [2021-08-21 13:40:26,390 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 512 ImplicationChecksByTransitivity, 540.8ms TimeCoverageRelationStatistics Valid=238, Invalid=2212, Unknown=0, NotChecked=0, Total=2450 [2021-08-21 13:40:26,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5893 states. [2021-08-21 13:40:26,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5893 to 5553. [2021-08-21 13:40:26,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5553 states, 5552 states have (on average 3.3843659942363113) internal successors, (18790), 5552 states have internal predecessors, (18790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:40:26,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5553 states to 5553 states and 18790 transitions. [2021-08-21 13:40:26,489 INFO L78 Accepts]: Start accepts. Automaton has 5553 states and 18790 transitions. Word has length 39 [2021-08-21 13:40:26,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:40:26,490 INFO L470 AbstractCegarLoop]: Abstraction has 5553 states and 18790 transitions. [2021-08-21 13:40:26,490 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:40:26,490 INFO L276 IsEmpty]: Start isEmpty. Operand 5553 states and 18790 transitions. [2021-08-21 13:40:26,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:40:26,500 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:40:26,500 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:40:26,500 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable471 [2021-08-21 13:40:26,500 INFO L402 AbstractCegarLoop]: === Iteration 473 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:40:26,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:40:26,500 INFO L82 PathProgramCache]: Analyzing trace with hash 26467912, now seen corresponding path program 473 times [2021-08-21 13:40:26,500 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:40:26,500 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1492933561] [2021-08-21 13:40:26,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:40:26,500 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:40:26,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:40:26,756 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:40:26,756 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:40:26,756 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1492933561] [2021-08-21 13:40:26,756 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1492933561] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:40:26,756 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:40:26,756 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 13:40:26,756 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960009832] [2021-08-21 13:40:26,756 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 13:40:26,756 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:40:26,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 13:40:26,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-08-21 13:40:26,757 INFO L87 Difference]: Start difference. First operand 5553 states and 18790 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:40:27,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:40:27,893 INFO L93 Difference]: Finished difference Result 5924 states and 19833 transitions. [2021-08-21 13:40:27,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-08-21 13:40:27,893 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-21 13:40:27,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:40:27,906 INFO L225 Difference]: With dead ends: 5924 [2021-08-21 13:40:27,907 INFO L226 Difference]: Without dead ends: 5881 [2021-08-21 13:40:27,907 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 422 ImplicationChecksByTransitivity, 664.6ms TimeCoverageRelationStatistics Valid=212, Invalid=1950, Unknown=0, NotChecked=0, Total=2162 [2021-08-21 13:40:27,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5881 states. [2021-08-21 13:40:27,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5881 to 5559. [2021-08-21 13:40:27,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5559 states, 5558 states have (on average 3.383051457358762) internal successors, (18803), 5558 states have internal predecessors, (18803), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:40:27,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5559 states to 5559 states and 18803 transitions. [2021-08-21 13:40:27,999 INFO L78 Accepts]: Start accepts. Automaton has 5559 states and 18803 transitions. Word has length 39 [2021-08-21 13:40:27,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:40:27,999 INFO L470 AbstractCegarLoop]: Abstraction has 5559 states and 18803 transitions. [2021-08-21 13:40:27,999 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:40:27,999 INFO L276 IsEmpty]: Start isEmpty. Operand 5559 states and 18803 transitions. [2021-08-21 13:40:28,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 13:40:28,008 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:40:28,008 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:40:28,008 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable472 [2021-08-21 13:40:28,008 INFO L402 AbstractCegarLoop]: === Iteration 474 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 13:40:28,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:40:28,008 INFO L82 PathProgramCache]: Analyzing trace with hash -244951638, now seen corresponding path program 474 times [2021-08-21 13:40:28,008 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:40:28,008 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [481348296] [2021-08-21 13:40:28,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:40:28,009 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:40:28,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat Received shutdown request... [2021-08-21 13:40:28,226 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONASSERT [2021-08-21 13:40:28,226 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable473 [2021-08-21 13:40:28,226 WARN L594 AbstractCegarLoop]: Verification canceled: while BasicCegarLoop was analyzing trace of length 40 with TraceHistMax 1,while InterpolatingTraceCheckCraig was constructing Craig interpolants,while PredicateComparison was comparing new predicate (quantifier-free) to 14 known predicates. [2021-08-21 13:40:28,227 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATION [2021-08-21 13:40:28,237 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATION [2021-08-21 13:40:28,237 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2INUSE_VIOLATION [2021-08-21 13:40:28,238 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr3INUSE_VIOLATION [2021-08-21 13:40:28,242 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-08-21 13:40:28,242 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-21 13:40:28,243 INFO L202 PluginConnector]: Adding new model easy10.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.08 01:40:28 BasicIcfg [2021-08-21 13:40:28,243 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-21 13:40:28,244 INFO L168 Benchmark]: Toolchain (without parser) took 864029.24 ms. Allocated memory was 248.5 MB in the beginning and 1.5 GB in the end (delta: 1.3 GB). Free memory was 229.7 MB in the beginning and 970.3 MB in the end (delta: -740.6 MB). Peak memory consumption was 551.8 MB. Max. memory is 8.0 GB. [2021-08-21 13:40:28,244 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.10 ms. Allocated memory is still 248.5 MB. Free memory is still 230.8 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-08-21 13:40:28,245 INFO L168 Benchmark]: Boogie Procedure Inliner took 23.12 ms. Allocated memory is still 248.5 MB. Free memory was 229.5 MB in the beginning and 228.1 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-08-21 13:40:28,245 INFO L168 Benchmark]: Boogie Preprocessor took 9.79 ms. Allocated memory is still 248.5 MB. Free memory was 228.1 MB in the beginning and 227.0 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-08-21 13:40:28,245 INFO L168 Benchmark]: RCFGBuilder took 216.50 ms. Allocated memory is still 248.5 MB. Free memory was 227.0 MB in the beginning and 213.4 MB in the end (delta: 13.6 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. [2021-08-21 13:40:28,245 INFO L168 Benchmark]: TraceAbstraction took 863776.65 ms. Allocated memory was 248.5 MB in the beginning and 1.5 GB in the end (delta: 1.3 GB). Free memory was 213.0 MB in the beginning and 970.3 MB in the end (delta: -757.3 MB). Peak memory consumption was 535.0 MB. Max. memory is 8.0 GB. [2021-08-21 13:40:28,246 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 0.10 ms. Allocated memory is still 248.5 MB. Free memory is still 230.8 MB. There was no memory consumed. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 23.12 ms. Allocated memory is still 248.5 MB. Free memory was 229.5 MB in the beginning and 228.1 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 9.79 ms. Allocated memory is still 248.5 MB. Free memory was 228.1 MB in the beginning and 227.0 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 216.50 ms. Allocated memory is still 248.5 MB. Free memory was 227.0 MB in the beginning and 213.4 MB in the end (delta: 13.6 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 863776.65 ms. Allocated memory was 248.5 MB in the beginning and 1.5 GB in the end (delta: 1.3 GB). Free memory was 213.0 MB in the beginning and 970.3 MB in the end (delta: -757.3 MB). Peak memory consumption was 535.0 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 79]: Timeout (TraceAbstraction) Unable to prove that assertion always holds Cancelled while BasicCegarLoop was analyzing trace of length 40 with TraceHistMax 1,while InterpolatingTraceCheckCraig was constructing Craig interpolants,while PredicateComparison was comparing new predicate (quantifier-free) to 14 known predicates. - TimeoutResultAtElement [Line: 70]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was analyzing trace of length 40 with TraceHistMax 1,while InterpolatingTraceCheckCraig was constructing Craig interpolants,while PredicateComparison was comparing new predicate (quantifier-free) to 14 known predicates. - TimeoutResultAtElement [Line: 72]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was analyzing trace of length 40 with TraceHistMax 1,while InterpolatingTraceCheckCraig was constructing Craig interpolants,while PredicateComparison was comparing new predicate (quantifier-free) to 14 known predicates. - TimeoutResultAtElement [Line: 71]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was analyzing trace of length 40 with TraceHistMax 1,while InterpolatingTraceCheckCraig was constructing Craig interpolants,while PredicateComparison was comparing new predicate (quantifier-free) to 14 known predicates. - TimeoutResultAtElement [Line: 70]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was analyzing trace of length 40 with TraceHistMax 1,while InterpolatingTraceCheckCraig was constructing Craig interpolants,while PredicateComparison was comparing new predicate (quantifier-free) to 14 known predicates. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 9 procedures, 82 locations, 5 error locations. Started 1 CEGAR loops. OverallTime: 863707.5ms, OverallIterations: 474, TraceHistogramMax: 1, EmptinessCheckTime: 3274.9ms, AutomataDifference: 694823.3ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 245.8ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 72168 SDtfs, 139846 SDslu, 696184 SDs, 0 SdLazy, 778082 SolverSat, 26669 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 251611.3ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 27094 GetRequests, 621 SyntacticMatches, 977 SemanticMatches, 25496 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 375237 ImplicationChecksByTransitivity, 428917.3ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=5595occurred in iteration=467, InterpolantAutomatonStates: 22784, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 36212.2ms AutomataMinimizationTime, 473 MinimizatonAttempts, 404143 StatesRemovedByMinimization, 471 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 207.9ms SsaConstructionTime, 895.7ms SatisfiabilityAnalysisTime, 124519.8ms InterpolantComputationTime, 18447 NumberOfCodeBlocks, 18447 NumberOfCodeBlocksAsserted, 473 NumberOfCheckSat, 17974 ConstructedInterpolants, 0 QuantifiedInterpolants, 234047 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 473 InterpolantComputations, 473 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 RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown