/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg true -i ../../../trunk/examples/svcomp/weaver/parallel-parallel-sum-equiv.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-wip.dk.empire-owicki-a20a710-m [2023-12-09 15:19:21,831 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-09 15:19:21,901 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf [2023-12-09 15:19:21,929 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-09 15:19:21,929 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-09 15:19:21,929 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-09 15:19:21,930 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-09 15:19:21,930 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-09 15:19:21,930 INFO L153 SettingsManager]: * Use SBE=true [2023-12-09 15:19:21,931 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-09 15:19:21,931 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-09 15:19:21,931 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-09 15:19:21,931 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-09 15:19:21,932 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-09 15:19:21,932 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-09 15:19:21,932 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-09 15:19:21,932 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-09 15:19:21,933 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-09 15:19:21,933 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-09 15:19:21,933 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-09 15:19:21,933 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-09 15:19:21,937 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-09 15:19:21,937 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-09 15:19:21,937 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-12-09 15:19:21,940 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-09 15:19:21,941 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-09 15:19:21,941 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-09 15:19:21,941 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-09 15:19:21,941 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-09 15:19:21,941 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-09 15:19:21,942 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-09 15:19:21,942 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-09 15:19:21,942 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-09 15:19:21,942 INFO L153 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> true [2023-12-09 15:19:22,130 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-09 15:19:22,148 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-09 15:19:22,150 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-09 15:19:22,151 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-09 15:19:22,151 INFO L274 PluginConnector]: CDTParser initialized [2023-12-09 15:19:22,152 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/parallel-parallel-sum-equiv.wvr.c [2023-12-09 15:19:23,031 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-09 15:19:23,189 INFO L384 CDTParser]: Found 1 translation units. [2023-12-09 15:19:23,189 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-parallel-sum-equiv.wvr.c [2023-12-09 15:19:23,196 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d2bddbc28/433c1842ae88416181727f684f578884/FLAG02495b6f2 [2023-12-09 15:19:23,208 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d2bddbc28/433c1842ae88416181727f684f578884 [2023-12-09 15:19:23,209 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-09 15:19:23,211 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-09 15:19:23,213 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-09 15:19:23,213 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-09 15:19:23,216 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-09 15:19:23,217 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 03:19:23" (1/1) ... [2023-12-09 15:19:23,217 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@789a5303 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:19:23, skipping insertion in model container [2023-12-09 15:19:23,218 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 03:19:23" (1/1) ... [2023-12-09 15:19:23,242 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-09 15:19:23,349 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-parallel-sum-equiv.wvr.c[3822,3835] [2023-12-09 15:19:23,355 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-09 15:19:23,364 INFO L202 MainTranslator]: Completed pre-run [2023-12-09 15:19:23,381 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-parallel-sum-equiv.wvr.c[3822,3835] [2023-12-09 15:19:23,388 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-09 15:19:23,394 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-12-09 15:19:23,394 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-12-09 15:19:23,398 INFO L206 MainTranslator]: Completed translation [2023-12-09 15:19:23,399 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:19:23 WrapperNode [2023-12-09 15:19:23,399 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-09 15:19:23,399 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-09 15:19:23,399 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-09 15:19:23,399 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-09 15:19:23,404 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:19:23" (1/1) ... [2023-12-09 15:19:23,410 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:19:23" (1/1) ... [2023-12-09 15:19:23,427 INFO L138 Inliner]: procedures = 27, calls = 73, calls flagged for inlining = 18, calls inlined = 22, statements flattened = 260 [2023-12-09 15:19:23,427 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-09 15:19:23,428 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-09 15:19:23,428 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-09 15:19:23,432 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-09 15:19:23,441 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:19:23" (1/1) ... [2023-12-09 15:19:23,441 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:19:23" (1/1) ... [2023-12-09 15:19:23,444 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:19:23" (1/1) ... [2023-12-09 15:19:23,444 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:19:23" (1/1) ... [2023-12-09 15:19:23,450 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:19:23" (1/1) ... [2023-12-09 15:19:23,453 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:19:23" (1/1) ... [2023-12-09 15:19:23,467 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:19:23" (1/1) ... [2023-12-09 15:19:23,468 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:19:23" (1/1) ... [2023-12-09 15:19:23,471 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-09 15:19:23,476 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-09 15:19:23,476 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-09 15:19:23,476 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-09 15:19:23,477 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:19:23" (1/1) ... [2023-12-09 15:19:23,480 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-09 15:19:23,489 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 15:19:23,503 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) [2023-12-09 15:19:23,505 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 [2023-12-09 15:19:23,523 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-09 15:19:23,523 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-09 15:19:23,523 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-12-09 15:19:23,523 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-12-09 15:19:23,524 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-12-09 15:19:23,524 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-12-09 15:19:23,524 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-12-09 15:19:23,524 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-12-09 15:19:23,524 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-12-09 15:19:23,524 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-12-09 15:19:23,525 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2023-12-09 15:19:23,525 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2023-12-09 15:19:23,525 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-09 15:19:23,525 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-12-09 15:19:23,525 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-12-09 15:19:23,525 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-12-09 15:19:23,525 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-09 15:19:23,526 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-09 15:19:23,526 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-09 15:19:23,527 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-12-09 15:19:23,637 INFO L241 CfgBuilder]: Building ICFG [2023-12-09 15:19:23,638 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-09 15:19:23,950 INFO L282 CfgBuilder]: Performing block encoding [2023-12-09 15:19:24,100 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-09 15:19:24,101 INFO L309 CfgBuilder]: Removed 4 assume(true) statements. [2023-12-09 15:19:24,102 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 03:19:24 BoogieIcfgContainer [2023-12-09 15:19:24,102 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-09 15:19:24,105 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-09 15:19:24,105 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-09 15:19:24,107 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-09 15:19:24,107 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 03:19:23" (1/3) ... [2023-12-09 15:19:24,107 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56dc3fd3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 03:19:24, skipping insertion in model container [2023-12-09 15:19:24,107 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:19:23" (2/3) ... [2023-12-09 15:19:24,108 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56dc3fd3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 03:19:24, skipping insertion in model container [2023-12-09 15:19:24,108 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 03:19:24" (3/3) ... [2023-12-09 15:19:24,110 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-parallel-sum-equiv.wvr.c [2023-12-09 15:19:24,121 INFO L197 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-09 15:19:24,122 INFO L156 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-09 15:19:24,122 INFO L508 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-12-09 15:19:24,193 INFO L144 ThreadInstanceAdder]: Constructed 10 joinOtherThreadTransitions. [2023-12-09 15:19:24,228 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 217 places, 218 transitions, 476 flow [2023-12-09 15:19:24,312 INFO L124 PetriNetUnfolderBase]: 14/203 cut-off events. [2023-12-09 15:19:24,312 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-12-09 15:19:24,317 INFO L83 FinitePrefix]: Finished finitePrefix Result has 222 conditions, 203 events. 14/203 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 180 event pairs, 0 based on Foata normal form. 0/188 useless extension candidates. Maximal degree in co-relation 173. Up to 3 conditions per place. [2023-12-09 15:19:24,318 INFO L82 GeneralOperation]: Start removeDead. Operand has 217 places, 218 transitions, 476 flow [2023-12-09 15:19:24,321 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 193 places, 194 transitions, 418 flow [2023-12-09 15:19:24,328 INFO L361 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-09 15:19:24,333 INFO L362 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@4207f2b8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-09 15:19:24,333 INFO L363 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2023-12-09 15:19:24,375 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-12-09 15:19:24,375 INFO L124 PetriNetUnfolderBase]: 14/193 cut-off events. [2023-12-09 15:19:24,375 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-12-09 15:19:24,375 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:19:24,376 INFO L233 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:19:24,377 INFO L425 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err5INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-12-09 15:19:24,381 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:19:24,381 INFO L85 PathProgramCache]: Analyzing trace with hash -1089617419, now seen corresponding path program 1 times [2023-12-09 15:19:24,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:19:24,390 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [391855603] [2023-12-09 15:19:24,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:19:24,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:19:24,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:19:24,683 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:19:24,683 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:19:24,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [391855603] [2023-12-09 15:19:24,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [391855603] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 15:19:24,684 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 15:19:24,684 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-09 15:19:24,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [909090364] [2023-12-09 15:19:24,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 15:19:24,691 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-09 15:19:24,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:19:24,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-09 15:19:24,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-09 15:19:24,717 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 186 out of 220 [2023-12-09 15:19:24,721 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 193 places, 194 transitions, 418 flow. Second operand has 2 states, 2 states have (on average 194.0) internal successors, (388), 2 states have internal predecessors, (388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:19:24,721 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:19:24,721 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 186 of 220 [2023-12-09 15:19:24,722 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:19:24,928 INFO L124 PetriNetUnfolderBase]: 301/970 cut-off events. [2023-12-09 15:19:24,929 INFO L125 PetriNetUnfolderBase]: For 136/136 co-relation queries the response was YES. [2023-12-09 15:19:24,934 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1553 conditions, 970 events. 301/970 cut-off events. For 136/136 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 5101 event pairs, 159 based on Foata normal form. 116/994 useless extension candidates. Maximal degree in co-relation 1404. Up to 431 conditions per place. [2023-12-09 15:19:24,938 INFO L140 encePairwiseOnDemand]: 212/220 looper letters, 21 selfloop transitions, 0 changer transitions 4/186 dead transitions. [2023-12-09 15:19:24,939 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 194 places, 186 transitions, 444 flow [2023-12-09 15:19:24,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-09 15:19:24,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-12-09 15:19:24,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 401 transitions. [2023-12-09 15:19:24,951 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.9113636363636364 [2023-12-09 15:19:24,952 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 401 transitions. [2023-12-09 15:19:24,952 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 401 transitions. [2023-12-09 15:19:24,955 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:19:24,956 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 401 transitions. [2023-12-09 15:19:24,960 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 200.5) internal successors, (401), 2 states have internal predecessors, (401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:19:24,963 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 220.0) internal successors, (660), 3 states have internal predecessors, (660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:19:24,964 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 220.0) internal successors, (660), 3 states have internal predecessors, (660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:19:24,967 INFO L308 CegarLoopForPetriNet]: 193 programPoint places, 1 predicate places. [2023-12-09 15:19:24,968 INFO L500 AbstractCegarLoop]: Abstraction has has 194 places, 186 transitions, 444 flow [2023-12-09 15:19:24,968 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 194.0) internal successors, (388), 2 states have internal predecessors, (388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:19:24,968 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:19:24,969 INFO L233 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:19:24,969 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-09 15:19:24,969 INFO L425 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err5INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-12-09 15:19:24,969 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:19:24,969 INFO L85 PathProgramCache]: Analyzing trace with hash 13737403, now seen corresponding path program 1 times [2023-12-09 15:19:24,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:19:24,970 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [42416276] [2023-12-09 15:19:24,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:19:24,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:19:25,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:19:25,321 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:19:25,322 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:19:25,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [42416276] [2023-12-09 15:19:25,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [42416276] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 15:19:25,322 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 15:19:25,322 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-09 15:19:25,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1114033598] [2023-12-09 15:19:25,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 15:19:25,323 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-09 15:19:25,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:19:25,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-09 15:19:25,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-09 15:19:25,325 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 154 out of 220 [2023-12-09 15:19:25,326 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 194 places, 186 transitions, 444 flow. Second operand has 6 states, 6 states have (on average 160.83333333333334) internal successors, (965), 6 states have internal predecessors, (965), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:19:25,326 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:19:25,326 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 154 of 220 [2023-12-09 15:19:25,327 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:19:25,730 INFO L124 PetriNetUnfolderBase]: 613/1790 cut-off events. [2023-12-09 15:19:25,730 INFO L125 PetriNetUnfolderBase]: For 676/794 co-relation queries the response was YES. [2023-12-09 15:19:25,735 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3867 conditions, 1790 events. 613/1790 cut-off events. For 676/794 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 11694 event pairs, 186 based on Foata normal form. 0/1624 useless extension candidates. Maximal degree in co-relation 3589. Up to 883 conditions per place. [2023-12-09 15:19:25,744 INFO L140 encePairwiseOnDemand]: 206/220 looper letters, 81 selfloop transitions, 8 changer transitions 10/232 dead transitions. [2023-12-09 15:19:25,744 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 201 places, 232 transitions, 852 flow [2023-12-09 15:19:25,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-09 15:19:25,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-12-09 15:19:25,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1332 transitions. [2023-12-09 15:19:25,747 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.7568181818181818 [2023-12-09 15:19:25,747 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1332 transitions. [2023-12-09 15:19:25,747 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1332 transitions. [2023-12-09 15:19:25,747 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:19:25,747 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1332 transitions. [2023-12-09 15:19:25,750 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 166.5) internal successors, (1332), 8 states have internal predecessors, (1332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:19:25,754 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 220.0) internal successors, (1980), 9 states have internal predecessors, (1980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:19:25,754 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 220.0) internal successors, (1980), 9 states have internal predecessors, (1980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:19:25,755 INFO L308 CegarLoopForPetriNet]: 193 programPoint places, 8 predicate places. [2023-12-09 15:19:25,756 INFO L500 AbstractCegarLoop]: Abstraction has has 201 places, 232 transitions, 852 flow [2023-12-09 15:19:25,756 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 160.83333333333334) internal successors, (965), 6 states have internal predecessors, (965), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:19:25,757 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:19:25,757 INFO L233 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:19:25,757 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-09 15:19:25,757 INFO L425 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err5INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-12-09 15:19:25,758 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:19:25,758 INFO L85 PathProgramCache]: Analyzing trace with hash -552030507, now seen corresponding path program 2 times [2023-12-09 15:19:25,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:19:25,758 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [30017913] [2023-12-09 15:19:25,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:19:25,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:19:25,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:19:25,967 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:19:25,968 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:19:25,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [30017913] [2023-12-09 15:19:25,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [30017913] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 15:19:25,968 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 15:19:25,968 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-09 15:19:25,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125689175] [2023-12-09 15:19:25,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 15:19:25,969 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-09 15:19:25,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:19:25,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-09 15:19:25,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-09 15:19:25,970 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 154 out of 220 [2023-12-09 15:19:25,971 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 232 transitions, 852 flow. Second operand has 6 states, 6 states have (on average 160.83333333333334) internal successors, (965), 6 states have internal predecessors, (965), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:19:25,971 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:19:25,972 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 154 of 220 [2023-12-09 15:19:25,972 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:19:26,484 INFO L124 PetriNetUnfolderBase]: 879/2395 cut-off events. [2023-12-09 15:19:26,484 INFO L125 PetriNetUnfolderBase]: For 1701/1941 co-relation queries the response was YES. [2023-12-09 15:19:26,489 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6758 conditions, 2395 events. 879/2395 cut-off events. For 1701/1941 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 17056 event pairs, 177 based on Foata normal form. 11/2200 useless extension candidates. Maximal degree in co-relation 6290. Up to 1280 conditions per place. [2023-12-09 15:19:26,501 INFO L140 encePairwiseOnDemand]: 205/220 looper letters, 115 selfloop transitions, 13 changer transitions 16/277 dead transitions. [2023-12-09 15:19:26,501 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 208 places, 277 transitions, 1433 flow [2023-12-09 15:19:26,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-09 15:19:26,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-12-09 15:19:26,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1332 transitions. [2023-12-09 15:19:26,504 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.7568181818181818 [2023-12-09 15:19:26,504 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1332 transitions. [2023-12-09 15:19:26,504 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1332 transitions. [2023-12-09 15:19:26,505 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:19:26,505 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1332 transitions. [2023-12-09 15:19:26,508 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 166.5) internal successors, (1332), 8 states have internal predecessors, (1332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:19:26,510 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 220.0) internal successors, (1980), 9 states have internal predecessors, (1980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:19:26,511 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 220.0) internal successors, (1980), 9 states have internal predecessors, (1980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:19:26,511 INFO L308 CegarLoopForPetriNet]: 193 programPoint places, 15 predicate places. [2023-12-09 15:19:26,512 INFO L500 AbstractCegarLoop]: Abstraction has has 208 places, 277 transitions, 1433 flow [2023-12-09 15:19:26,512 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 160.83333333333334) internal successors, (965), 6 states have internal predecessors, (965), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:19:26,512 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:19:26,512 INFO L233 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:19:26,513 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-09 15:19:26,513 INFO L425 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err5INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-12-09 15:19:26,513 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:19:26,513 INFO L85 PathProgramCache]: Analyzing trace with hash 74147742, now seen corresponding path program 1 times [2023-12-09 15:19:26,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:19:26,514 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1531856445] [2023-12-09 15:19:26,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:19:26,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:19:26,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:19:26,597 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:19:26,597 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:19:26,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1531856445] [2023-12-09 15:19:26,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1531856445] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 15:19:26,598 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 15:19:26,598 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-09 15:19:26,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053986046] [2023-12-09 15:19:26,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 15:19:26,602 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-09 15:19:26,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:19:26,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-09 15:19:26,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-09 15:19:26,605 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 180 out of 220 [2023-12-09 15:19:26,605 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 208 places, 277 transitions, 1433 flow. Second operand has 3 states, 3 states have (on average 187.0) internal successors, (561), 3 states have internal predecessors, (561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:19:26,605 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:19:26,605 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 180 of 220 [2023-12-09 15:19:26,605 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:19:26,922 INFO L124 PetriNetUnfolderBase]: 798/2333 cut-off events. [2023-12-09 15:19:26,922 INFO L125 PetriNetUnfolderBase]: For 2494/2712 co-relation queries the response was YES. [2023-12-09 15:19:26,929 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7658 conditions, 2333 events. 798/2333 cut-off events. For 2494/2712 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 16407 event pairs, 74 based on Foata normal form. 81/2255 useless extension candidates. Maximal degree in co-relation 7141. Up to 1199 conditions per place. [2023-12-09 15:19:26,943 INFO L140 encePairwiseOnDemand]: 216/220 looper letters, 128 selfloop transitions, 10 changer transitions 16/321 dead transitions. [2023-12-09 15:19:26,943 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 321 transitions, 2086 flow [2023-12-09 15:19:26,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-09 15:19:26,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-12-09 15:19:26,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 579 transitions. [2023-12-09 15:19:26,945 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.8772727272727273 [2023-12-09 15:19:26,945 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 579 transitions. [2023-12-09 15:19:26,945 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 579 transitions. [2023-12-09 15:19:26,945 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:19:26,946 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 579 transitions. [2023-12-09 15:19:26,947 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 193.0) internal successors, (579), 3 states have internal predecessors, (579), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:19:26,948 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 220.0) internal successors, (880), 4 states have internal predecessors, (880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:19:26,948 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 220.0) internal successors, (880), 4 states have internal predecessors, (880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:19:26,951 INFO L308 CegarLoopForPetriNet]: 193 programPoint places, 17 predicate places. [2023-12-09 15:19:26,951 INFO L500 AbstractCegarLoop]: Abstraction has has 210 places, 321 transitions, 2086 flow [2023-12-09 15:19:26,951 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 187.0) internal successors, (561), 3 states have internal predecessors, (561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:19:26,951 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:19:26,951 INFO L233 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:19:26,951 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-09 15:19:26,951 INFO L425 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err5INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-12-09 15:19:26,952 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:19:26,952 INFO L85 PathProgramCache]: Analyzing trace with hash -1452489659, now seen corresponding path program 1 times [2023-12-09 15:19:26,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:19:26,953 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [241004151] [2023-12-09 15:19:26,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:19:26,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:19:27,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:19:27,150 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:19:27,151 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:19:27,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [241004151] [2023-12-09 15:19:27,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [241004151] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 15:19:27,151 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 15:19:27,151 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-09 15:19:27,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225697688] [2023-12-09 15:19:27,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 15:19:27,152 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-09 15:19:27,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:19:27,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-09 15:19:27,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-12-09 15:19:27,153 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 166 out of 220 [2023-12-09 15:19:27,154 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 210 places, 321 transitions, 2086 flow. Second operand has 7 states, 7 states have (on average 170.42857142857142) internal successors, (1193), 7 states have internal predecessors, (1193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:19:27,154 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:19:27,154 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 166 of 220 [2023-12-09 15:19:27,154 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:19:27,619 INFO L124 PetriNetUnfolderBase]: 982/3086 cut-off events. [2023-12-09 15:19:27,620 INFO L125 PetriNetUnfolderBase]: For 5031/5367 co-relation queries the response was YES. [2023-12-09 15:19:27,627 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11412 conditions, 3086 events. 982/3086 cut-off events. For 5031/5367 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 23582 event pairs, 93 based on Foata normal form. 35/2911 useless extension candidates. Maximal degree in co-relation 8299. Up to 1514 conditions per place. [2023-12-09 15:19:27,647 INFO L140 encePairwiseOnDemand]: 209/220 looper letters, 213 selfloop transitions, 12 changer transitions 23/401 dead transitions. [2023-12-09 15:19:27,647 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 219 places, 401 transitions, 3383 flow [2023-12-09 15:19:27,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-09 15:19:27,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-12-09 15:19:27,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1733 transitions. [2023-12-09 15:19:27,650 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.7877272727272727 [2023-12-09 15:19:27,650 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1733 transitions. [2023-12-09 15:19:27,650 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1733 transitions. [2023-12-09 15:19:27,651 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:19:27,651 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1733 transitions. [2023-12-09 15:19:27,653 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 173.3) internal successors, (1733), 10 states have internal predecessors, (1733), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:19:27,656 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 220.0) internal successors, (2420), 11 states have internal predecessors, (2420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:19:27,656 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 220.0) internal successors, (2420), 11 states have internal predecessors, (2420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:19:27,658 INFO L308 CegarLoopForPetriNet]: 193 programPoint places, 26 predicate places. [2023-12-09 15:19:27,658 INFO L500 AbstractCegarLoop]: Abstraction has has 219 places, 401 transitions, 3383 flow [2023-12-09 15:19:27,658 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 170.42857142857142) internal successors, (1193), 7 states have internal predecessors, (1193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:19:27,659 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:19:27,659 INFO L233 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:19:27,659 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-09 15:19:27,659 INFO L425 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err5INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-12-09 15:19:27,660 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:19:27,661 INFO L85 PathProgramCache]: Analyzing trace with hash 1912996576, now seen corresponding path program 1 times [2023-12-09 15:19:27,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:19:27,663 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1971112352] [2023-12-09 15:19:27,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:19:27,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:19:27,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:19:27,844 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:19:27,844 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:19:27,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1971112352] [2023-12-09 15:19:27,844 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1971112352] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 15:19:27,845 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 15:19:27,845 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-09 15:19:27,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319437840] [2023-12-09 15:19:27,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 15:19:27,845 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-09 15:19:27,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:19:27,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-09 15:19:27,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-12-09 15:19:27,847 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 166 out of 220 [2023-12-09 15:19:27,848 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 219 places, 401 transitions, 3383 flow. Second operand has 7 states, 7 states have (on average 170.42857142857142) internal successors, (1193), 7 states have internal predecessors, (1193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:19:27,848 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:19:27,848 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 166 of 220 [2023-12-09 15:19:27,848 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:19:28,309 INFO L124 PetriNetUnfolderBase]: 875/2765 cut-off events. [2023-12-09 15:19:28,309 INFO L125 PetriNetUnfolderBase]: For 6362/6852 co-relation queries the response was YES. [2023-12-09 15:19:28,317 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11551 conditions, 2765 events. 875/2765 cut-off events. For 6362/6852 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 20407 event pairs, 80 based on Foata normal form. 31/2606 useless extension candidates. Maximal degree in co-relation 9457. Up to 1347 conditions per place. [2023-12-09 15:19:28,332 INFO L140 encePairwiseOnDemand]: 210/220 looper letters, 150 selfloop transitions, 6 changer transitions 72/381 dead transitions. [2023-12-09 15:19:28,333 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 228 places, 381 transitions, 3568 flow [2023-12-09 15:19:28,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-09 15:19:28,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-12-09 15:19:28,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1735 transitions. [2023-12-09 15:19:28,336 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.7886363636363637 [2023-12-09 15:19:28,336 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1735 transitions. [2023-12-09 15:19:28,336 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1735 transitions. [2023-12-09 15:19:28,336 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:19:28,336 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1735 transitions. [2023-12-09 15:19:28,339 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 173.5) internal successors, (1735), 10 states have internal predecessors, (1735), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:19:28,341 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 220.0) internal successors, (2420), 11 states have internal predecessors, (2420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:19:28,342 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 220.0) internal successors, (2420), 11 states have internal predecessors, (2420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:19:28,342 INFO L308 CegarLoopForPetriNet]: 193 programPoint places, 35 predicate places. [2023-12-09 15:19:28,342 INFO L500 AbstractCegarLoop]: Abstraction has has 228 places, 381 transitions, 3568 flow [2023-12-09 15:19:28,343 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 170.42857142857142) internal successors, (1193), 7 states have internal predecessors, (1193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:19:28,343 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:19:28,343 INFO L233 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:19:28,343 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-09 15:19:28,343 INFO L425 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err5INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-12-09 15:19:28,343 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:19:28,344 INFO L85 PathProgramCache]: Analyzing trace with hash -2037515701, now seen corresponding path program 1 times [2023-12-09 15:19:28,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:19:28,344 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [650785514] [2023-12-09 15:19:28,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:19:28,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:19:28,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:19:28,550 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:19:28,550 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:19:28,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [650785514] [2023-12-09 15:19:28,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [650785514] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-09 15:19:28,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1091902072] [2023-12-09 15:19:28,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:19:28,551 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:19:28,551 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 15:19:28,553 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-09 15:19:28,556 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-09 15:19:28,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:19:28,672 INFO L262 TraceCheckSpWp]: Trace formula consists of 431 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-09 15:19:28,677 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-09 15:19:28,839 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:19:28,840 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-09 15:19:29,004 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:19:29,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1091902072] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-09 15:19:29,005 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-09 15:19:29,005 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2023-12-09 15:19:29,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [742952589] [2023-12-09 15:19:29,005 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-09 15:19:29,006 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-12-09 15:19:29,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:19:29,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-12-09 15:19:29,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=259, Unknown=0, NotChecked=0, Total=342 [2023-12-09 15:19:29,009 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 165 out of 220 [2023-12-09 15:19:29,011 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 228 places, 381 transitions, 3568 flow. Second operand has 19 states, 19 states have (on average 168.1578947368421) internal successors, (3195), 19 states have internal predecessors, (3195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:19:29,011 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:19:29,011 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 165 of 220 [2023-12-09 15:19:29,011 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:19:29,772 INFO L124 PetriNetUnfolderBase]: 1229/3942 cut-off events. [2023-12-09 15:19:29,772 INFO L125 PetriNetUnfolderBase]: For 12669/13845 co-relation queries the response was YES. [2023-12-09 15:19:29,782 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18355 conditions, 3942 events. 1229/3942 cut-off events. For 12669/13845 co-relation queries the response was YES. Maximal size of possible extension queue 170. Compared 32153 event pairs, 88 based on Foata normal form. 93/3756 useless extension candidates. Maximal degree in co-relation 10602. Up to 1910 conditions per place. [2023-12-09 15:19:29,805 INFO L140 encePairwiseOnDemand]: 203/220 looper letters, 300 selfloop transitions, 32 changer transitions 104/588 dead transitions. [2023-12-09 15:19:29,806 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 243 places, 588 transitions, 7486 flow [2023-12-09 15:19:29,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-09 15:19:29,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-12-09 15:19:29,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 2745 transitions. [2023-12-09 15:19:29,810 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.7798295454545454 [2023-12-09 15:19:29,810 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 2745 transitions. [2023-12-09 15:19:29,810 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 2745 transitions. [2023-12-09 15:19:29,811 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:19:29,811 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 2745 transitions. [2023-12-09 15:19:29,815 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 171.5625) internal successors, (2745), 16 states have internal predecessors, (2745), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:19:29,819 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 220.0) internal successors, (3740), 17 states have internal predecessors, (3740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:19:29,820 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 220.0) internal successors, (3740), 17 states have internal predecessors, (3740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:19:29,821 INFO L308 CegarLoopForPetriNet]: 193 programPoint places, 50 predicate places. [2023-12-09 15:19:29,821 INFO L500 AbstractCegarLoop]: Abstraction has has 243 places, 588 transitions, 7486 flow [2023-12-09 15:19:29,822 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 168.1578947368421) internal successors, (3195), 19 states have internal predecessors, (3195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:19:29,822 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:19:29,822 INFO L233 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:19:29,829 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-12-09 15:19:30,027 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:19:30,027 INFO L425 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err5INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-12-09 15:19:30,028 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:19:30,028 INFO L85 PathProgramCache]: Analyzing trace with hash 1342771005, now seen corresponding path program 1 times [2023-12-09 15:19:30,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:19:30,028 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [441001614] [2023-12-09 15:19:30,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:19:30,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:19:30,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:19:30,252 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:19:30,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:19:30,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [441001614] [2023-12-09 15:19:30,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [441001614] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-09 15:19:30,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1499606378] [2023-12-09 15:19:30,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:19:30,253 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:19:30,253 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 15:19:30,254 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-09 15:19:30,257 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-09 15:19:30,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:19:30,402 INFO L262 TraceCheckSpWp]: Trace formula consists of 431 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-09 15:19:30,412 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-09 15:19:30,558 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:19:30,559 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-09 15:19:30,714 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:19:30,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1499606378] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-09 15:19:30,716 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-09 15:19:30,716 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2023-12-09 15:19:30,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048934106] [2023-12-09 15:19:30,716 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-09 15:19:30,716 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-12-09 15:19:30,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:19:30,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-12-09 15:19:30,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=259, Unknown=0, NotChecked=0, Total=342 [2023-12-09 15:19:30,719 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 165 out of 220 [2023-12-09 15:19:30,721 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 243 places, 588 transitions, 7486 flow. Second operand has 19 states, 19 states have (on average 168.47368421052633) internal successors, (3201), 19 states have internal predecessors, (3201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:19:30,721 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:19:30,721 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 165 of 220 [2023-12-09 15:19:30,721 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:19:31,415 INFO L124 PetriNetUnfolderBase]: 952/3173 cut-off events. [2023-12-09 15:19:31,415 INFO L125 PetriNetUnfolderBase]: For 12413/13157 co-relation queries the response was YES. [2023-12-09 15:19:31,422 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16048 conditions, 3173 events. 952/3173 cut-off events. For 12413/13157 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 24420 event pairs, 74 based on Foata normal form. 22/2979 useless extension candidates. Maximal degree in co-relation 11770. Up to 1495 conditions per place. [2023-12-09 15:19:31,438 INFO L140 encePairwiseOnDemand]: 201/220 looper letters, 206 selfloop transitions, 34 changer transitions 140/532 dead transitions. [2023-12-09 15:19:31,439 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 258 places, 532 transitions, 7274 flow [2023-12-09 15:19:31,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-09 15:19:31,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-12-09 15:19:31,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 2727 transitions. [2023-12-09 15:19:31,444 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.774715909090909 [2023-12-09 15:19:31,444 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 2727 transitions. [2023-12-09 15:19:31,444 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 2727 transitions. [2023-12-09 15:19:31,445 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:19:31,445 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 2727 transitions. [2023-12-09 15:19:31,448 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 170.4375) internal successors, (2727), 16 states have internal predecessors, (2727), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:19:31,452 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 220.0) internal successors, (3740), 17 states have internal predecessors, (3740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:19:31,462 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 220.0) internal successors, (3740), 17 states have internal predecessors, (3740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:19:31,463 INFO L308 CegarLoopForPetriNet]: 193 programPoint places, 65 predicate places. [2023-12-09 15:19:31,463 INFO L500 AbstractCegarLoop]: Abstraction has has 258 places, 532 transitions, 7274 flow [2023-12-09 15:19:31,464 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 168.47368421052633) internal successors, (3201), 19 states have internal predecessors, (3201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:19:31,464 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:19:31,465 INFO L233 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:19:31,472 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-09 15:19:31,671 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-12-09 15:19:31,671 INFO L425 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err5INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-12-09 15:19:31,671 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:19:31,671 INFO L85 PathProgramCache]: Analyzing trace with hash 1225020091, now seen corresponding path program 1 times [2023-12-09 15:19:31,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:19:31,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [661271006] [2023-12-09 15:19:31,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:19:31,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:19:31,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:19:31,850 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:19:31,850 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:19:31,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [661271006] [2023-12-09 15:19:31,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [661271006] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-09 15:19:31,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [866065441] [2023-12-09 15:19:31,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:19:31,852 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:19:31,852 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 15:19:31,853 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-09 15:19:31,865 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-09 15:19:31,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:19:31,984 INFO L262 TraceCheckSpWp]: Trace formula consists of 445 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-09 15:19:31,990 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-09 15:19:32,130 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:19:32,131 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-09 15:19:32,300 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:19:32,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [866065441] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-09 15:19:32,300 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-12-09 15:19:32,300 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [9, 9] total 19 [2023-12-09 15:19:32,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731879269] [2023-12-09 15:19:32,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 15:19:32,301 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-09 15:19:32,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:19:32,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-09 15:19:32,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=262, Unknown=0, NotChecked=0, Total=342 [2023-12-09 15:19:32,303 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 165 out of 220 [2023-12-09 15:19:32,304 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 258 places, 532 transitions, 7274 flow. Second operand has 9 states, 9 states have (on average 169.55555555555554) internal successors, (1526), 9 states have internal predecessors, (1526), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:19:32,304 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:19:32,304 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 165 of 220 [2023-12-09 15:19:32,304 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:19:32,884 INFO L124 PetriNetUnfolderBase]: 799/2674 cut-off events. [2023-12-09 15:19:32,884 INFO L125 PetriNetUnfolderBase]: For 14102/15202 co-relation queries the response was YES. [2023-12-09 15:19:32,890 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14750 conditions, 2674 events. 799/2674 cut-off events. For 14102/15202 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 19366 event pairs, 52 based on Foata normal form. 35/2530 useless extension candidates. Maximal degree in co-relation 10398. Up to 1252 conditions per place. [2023-12-09 15:19:32,904 INFO L140 encePairwiseOnDemand]: 204/220 looper letters, 221 selfloop transitions, 23 changer transitions 125/515 dead transitions. [2023-12-09 15:19:32,905 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 267 places, 515 transitions, 7704 flow [2023-12-09 15:19:32,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-09 15:19:32,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-12-09 15:19:32,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1728 transitions. [2023-12-09 15:19:32,908 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.7854545454545454 [2023-12-09 15:19:32,908 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1728 transitions. [2023-12-09 15:19:32,908 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1728 transitions. [2023-12-09 15:19:32,909 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:19:32,909 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1728 transitions. [2023-12-09 15:19:32,911 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 172.8) internal successors, (1728), 10 states have internal predecessors, (1728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:19:32,913 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 220.0) internal successors, (2420), 11 states have internal predecessors, (2420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:19:32,913 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 220.0) internal successors, (2420), 11 states have internal predecessors, (2420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:19:32,914 INFO L308 CegarLoopForPetriNet]: 193 programPoint places, 74 predicate places. [2023-12-09 15:19:32,914 INFO L500 AbstractCegarLoop]: Abstraction has has 267 places, 515 transitions, 7704 flow [2023-12-09 15:19:32,914 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 169.55555555555554) internal successors, (1526), 9 states have internal predecessors, (1526), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:19:32,915 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:19:32,915 INFO L233 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:19:32,922 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-09 15:19:33,122 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:19:33,123 INFO L425 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err5INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-12-09 15:19:33,123 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:19:33,123 INFO L85 PathProgramCache]: Analyzing trace with hash -728842328, now seen corresponding path program 2 times [2023-12-09 15:19:33,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:19:33,123 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [870842400] [2023-12-09 15:19:33,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:19:33,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:19:33,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:19:33,288 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:19:33,289 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:19:33,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [870842400] [2023-12-09 15:19:33,289 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [870842400] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-09 15:19:33,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1126223940] [2023-12-09 15:19:33,289 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-09 15:19:33,289 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:19:33,289 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 15:19:33,292 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-09 15:19:33,316 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-09 15:19:33,428 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-09 15:19:33,428 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-09 15:19:33,430 INFO L262 TraceCheckSpWp]: Trace formula consists of 445 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-09 15:19:33,432 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-09 15:19:33,469 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-09 15:19:33,470 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-09 15:19:33,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1126223940] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 15:19:33,470 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-09 15:19:33,470 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 11 [2023-12-09 15:19:33,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585285741] [2023-12-09 15:19:33,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 15:19:33,470 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-09 15:19:33,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:19:33,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-09 15:19:33,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2023-12-09 15:19:33,471 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 178 out of 220 [2023-12-09 15:19:33,472 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 267 places, 515 transitions, 7704 flow. Second operand has 5 states, 5 states have (on average 182.6) internal successors, (913), 5 states have internal predecessors, (913), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:19:33,472 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:19:33,472 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 178 of 220 [2023-12-09 15:19:33,472 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:19:33,926 INFO L124 PetriNetUnfolderBase]: 866/2868 cut-off events. [2023-12-09 15:19:33,926 INFO L125 PetriNetUnfolderBase]: For 18926/20121 co-relation queries the response was YES. [2023-12-09 15:19:33,935 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17205 conditions, 2868 events. 866/2868 cut-off events. For 18926/20121 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 21502 event pairs, 29 based on Foata normal form. 65/2715 useless extension candidates. Maximal degree in co-relation 12514. Up to 1350 conditions per place. [2023-12-09 15:19:33,953 INFO L140 encePairwiseOnDemand]: 212/220 looper letters, 236 selfloop transitions, 26 changer transitions 125/555 dead transitions. [2023-12-09 15:19:33,954 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 271 places, 555 transitions, 9269 flow [2023-12-09 15:19:33,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-09 15:19:33,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-12-09 15:19:33,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 954 transitions. [2023-12-09 15:19:33,955 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.8672727272727273 [2023-12-09 15:19:33,955 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 954 transitions. [2023-12-09 15:19:33,956 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 954 transitions. [2023-12-09 15:19:33,956 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:19:33,956 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 954 transitions. [2023-12-09 15:19:33,957 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 190.8) internal successors, (954), 5 states have internal predecessors, (954), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:19:33,958 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 220.0) internal successors, (1320), 6 states have internal predecessors, (1320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:19:33,959 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 220.0) internal successors, (1320), 6 states have internal predecessors, (1320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:19:33,959 INFO L308 CegarLoopForPetriNet]: 193 programPoint places, 78 predicate places. [2023-12-09 15:19:33,959 INFO L500 AbstractCegarLoop]: Abstraction has has 271 places, 555 transitions, 9269 flow [2023-12-09 15:19:33,960 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 182.6) internal successors, (913), 5 states have internal predecessors, (913), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:19:33,960 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:19:33,960 INFO L233 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:19:33,967 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-09 15:19:34,164 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:19:34,166 INFO L425 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err5INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-12-09 15:19:34,166 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:19:34,166 INFO L85 PathProgramCache]: Analyzing trace with hash 775758544, now seen corresponding path program 3 times [2023-12-09 15:19:34,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:19:34,167 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1061037976] [2023-12-09 15:19:34,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:19:34,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:19:34,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:19:34,362 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-09 15:19:34,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:19:34,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1061037976] [2023-12-09 15:19:34,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1061037976] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-09 15:19:34,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [757237630] [2023-12-09 15:19:34,363 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-09 15:19:34,363 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:19:34,363 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 15:19:34,366 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-09 15:19:34,377 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-09 15:19:34,486 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-12-09 15:19:34,486 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-09 15:19:34,488 INFO L262 TraceCheckSpWp]: Trace formula consists of 431 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-09 15:19:34,489 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-09 15:19:34,540 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-09 15:19:34,540 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-09 15:19:34,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [757237630] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 15:19:34,540 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-09 15:19:34,540 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 12 [2023-12-09 15:19:34,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252617066] [2023-12-09 15:19:34,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 15:19:34,541 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-09 15:19:34,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:19:34,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-09 15:19:34,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2023-12-09 15:19:34,542 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 178 out of 220 [2023-12-09 15:19:34,542 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 271 places, 555 transitions, 9269 flow. Second operand has 5 states, 5 states have (on average 182.6) internal successors, (913), 5 states have internal predecessors, (913), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:19:34,542 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:19:34,543 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 178 of 220 [2023-12-09 15:19:34,543 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:19:35,019 INFO L124 PetriNetUnfolderBase]: 954/3191 cut-off events. [2023-12-09 15:19:35,019 INFO L125 PetriNetUnfolderBase]: For 24043/25394 co-relation queries the response was YES. [2023-12-09 15:19:35,029 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20442 conditions, 3191 events. 954/3191 cut-off events. For 24043/25394 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 24771 event pairs, 24 based on Foata normal form. 90/3039 useless extension candidates. Maximal degree in co-relation 15326. Up to 1487 conditions per place. [2023-12-09 15:19:35,050 INFO L140 encePairwiseOnDemand]: 211/220 looper letters, 282 selfloop transitions, 25 changer transitions 152/627 dead transitions. [2023-12-09 15:19:35,050 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 275 places, 627 transitions, 11837 flow [2023-12-09 15:19:35,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-09 15:19:35,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-12-09 15:19:35,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 953 transitions. [2023-12-09 15:19:35,052 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.8663636363636363 [2023-12-09 15:19:35,052 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 953 transitions. [2023-12-09 15:19:35,052 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 953 transitions. [2023-12-09 15:19:35,053 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:19:35,053 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 953 transitions. [2023-12-09 15:19:35,054 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 190.6) internal successors, (953), 5 states have internal predecessors, (953), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:19:35,055 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 220.0) internal successors, (1320), 6 states have internal predecessors, (1320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:19:35,055 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 220.0) internal successors, (1320), 6 states have internal predecessors, (1320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:19:35,055 INFO L308 CegarLoopForPetriNet]: 193 programPoint places, 82 predicate places. [2023-12-09 15:19:35,056 INFO L500 AbstractCegarLoop]: Abstraction has has 275 places, 627 transitions, 11837 flow [2023-12-09 15:19:35,056 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 182.6) internal successors, (913), 5 states have internal predecessors, (913), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:19:35,056 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:19:35,056 INFO L233 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:19:35,062 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-09 15:19:35,260 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-12-09 15:19:35,260 INFO L425 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err5INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-12-09 15:19:35,261 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:19:35,261 INFO L85 PathProgramCache]: Analyzing trace with hash -1827841964, now seen corresponding path program 4 times [2023-12-09 15:19:35,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:19:35,261 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [769149227] [2023-12-09 15:19:35,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:19:35,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:19:35,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:19:35,413 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:19:35,413 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:19:35,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [769149227] [2023-12-09 15:19:35,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [769149227] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-09 15:19:35,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1971559205] [2023-12-09 15:19:35,414 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-09 15:19:35,414 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:19:35,415 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 15:19:35,416 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-09 15:19:35,420 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-09 15:19:35,530 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-09 15:19:35,531 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-09 15:19:35,532 INFO L262 TraceCheckSpWp]: Trace formula consists of 360 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-09 15:19:35,534 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-09 15:19:35,657 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:19:35,657 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-09 15:19:35,827 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:19:35,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1971559205] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-09 15:19:35,827 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-12-09 15:19:35,827 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [9, 9] total 19 [2023-12-09 15:19:35,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013635368] [2023-12-09 15:19:35,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 15:19:35,828 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-09 15:19:35,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:19:35,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-09 15:19:35,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=262, Unknown=0, NotChecked=0, Total=342 [2023-12-09 15:19:35,829 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 165 out of 220 [2023-12-09 15:19:35,830 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 275 places, 627 transitions, 11837 flow. Second operand has 9 states, 9 states have (on average 169.55555555555554) internal successors, (1526), 9 states have internal predecessors, (1526), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:19:35,830 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:19:35,830 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 165 of 220 [2023-12-09 15:19:35,830 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:19:36,426 INFO L124 PetriNetUnfolderBase]: 825/2760 cut-off events. [2023-12-09 15:19:36,426 INFO L125 PetriNetUnfolderBase]: For 24624/25827 co-relation queries the response was YES. [2023-12-09 15:19:36,433 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19056 conditions, 2760 events. 825/2760 cut-off events. For 24624/25827 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 20568 event pairs, 27 based on Foata normal form. 147/2692 useless extension candidates. Maximal degree in co-relation 13713. Up to 1287 conditions per place. [2023-12-09 15:19:36,450 INFO L140 encePairwiseOnDemand]: 206/220 looper letters, 265 selfloop transitions, 28 changer transitions 148/581 dead transitions. [2023-12-09 15:19:36,451 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 284 places, 581 transitions, 11675 flow [2023-12-09 15:19:36,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-09 15:19:36,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-12-09 15:19:36,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1734 transitions. [2023-12-09 15:19:36,453 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.7881818181818182 [2023-12-09 15:19:36,454 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1734 transitions. [2023-12-09 15:19:36,454 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1734 transitions. [2023-12-09 15:19:36,454 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:19:36,454 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1734 transitions. [2023-12-09 15:19:36,456 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 173.4) internal successors, (1734), 10 states have internal predecessors, (1734), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:19:36,458 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 220.0) internal successors, (2420), 11 states have internal predecessors, (2420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:19:36,459 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 220.0) internal successors, (2420), 11 states have internal predecessors, (2420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:19:36,459 INFO L308 CegarLoopForPetriNet]: 193 programPoint places, 91 predicate places. [2023-12-09 15:19:36,459 INFO L500 AbstractCegarLoop]: Abstraction has has 284 places, 581 transitions, 11675 flow [2023-12-09 15:19:36,459 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 169.55555555555554) internal successors, (1526), 9 states have internal predecessors, (1526), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:19:36,459 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:19:36,460 INFO L233 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:19:36,466 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-12-09 15:19:36,666 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:19:36,667 INFO L425 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err5INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-12-09 15:19:36,667 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:19:36,667 INFO L85 PathProgramCache]: Analyzing trace with hash -1831528759, now seen corresponding path program 1 times [2023-12-09 15:19:36,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:19:36,667 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [153262500] [2023-12-09 15:19:36,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:19:36,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:19:36,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:19:37,593 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-09 15:19:37,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:19:37,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [153262500] [2023-12-09 15:19:37,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [153262500] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-09 15:19:37,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [805982198] [2023-12-09 15:19:37,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:19:37,595 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:19:37,595 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 15:19:37,596 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-09 15:19:37,612 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-09 15:19:37,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:19:37,721 INFO L262 TraceCheckSpWp]: Trace formula consists of 461 conjuncts, 41 conjunts are in the unsatisfiable core [2023-12-09 15:19:37,724 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-09 15:19:37,900 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2023-12-09 15:19:37,939 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-09 15:19:37,939 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-09 15:19:38,028 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-09 15:19:38,028 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 16 [2023-12-09 15:19:38,097 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-09 15:19:38,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [805982198] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-09 15:19:38,098 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-09 15:19:38,098 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 12, 10] total 25 [2023-12-09 15:19:38,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1410188540] [2023-12-09 15:19:38,098 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-09 15:19:38,099 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-12-09 15:19:38,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:19:38,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-12-09 15:19:38,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=524, Unknown=0, NotChecked=0, Total=600 [2023-12-09 15:19:38,102 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 220 [2023-12-09 15:19:38,103 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 284 places, 581 transitions, 11675 flow. Second operand has 25 states, 25 states have (on average 118.88) internal successors, (2972), 25 states have internal predecessors, (2972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:19:38,104 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:19:38,104 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 220 [2023-12-09 15:19:38,104 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:19:40,827 INFO L124 PetriNetUnfolderBase]: 5144/11797 cut-off events. [2023-12-09 15:19:40,827 INFO L125 PetriNetUnfolderBase]: For 119448/124007 co-relation queries the response was YES. [2023-12-09 15:19:40,891 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83117 conditions, 11797 events. 5144/11797 cut-off events. For 119448/124007 co-relation queries the response was YES. Maximal size of possible extension queue 493. Compared 105179 event pairs, 723 based on Foata normal form. 155/11238 useless extension candidates. Maximal degree in co-relation 67884. Up to 5211 conditions per place. [2023-12-09 15:19:40,981 INFO L140 encePairwiseOnDemand]: 190/220 looper letters, 385 selfloop transitions, 83 changer transitions 166/729 dead transitions. [2023-12-09 15:19:40,981 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 312 places, 729 transitions, 15864 flow [2023-12-09 15:19:40,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-12-09 15:19:40,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2023-12-09 15:19:40,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 3541 transitions. [2023-12-09 15:19:40,991 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5550156739811912 [2023-12-09 15:19:40,991 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 3541 transitions. [2023-12-09 15:19:40,991 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 3541 transitions. [2023-12-09 15:19:40,993 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:19:40,993 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 3541 transitions. [2023-12-09 15:19:41,000 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 122.10344827586206) internal successors, (3541), 29 states have internal predecessors, (3541), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:19:41,006 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 220.0) internal successors, (6600), 30 states have internal predecessors, (6600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:19:41,007 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 220.0) internal successors, (6600), 30 states have internal predecessors, (6600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:19:41,008 INFO L308 CegarLoopForPetriNet]: 193 programPoint places, 119 predicate places. [2023-12-09 15:19:41,008 INFO L500 AbstractCegarLoop]: Abstraction has has 312 places, 729 transitions, 15864 flow [2023-12-09 15:19:41,008 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 118.88) internal successors, (2972), 25 states have internal predecessors, (2972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:19:41,009 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:19:41,009 INFO L233 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:19:41,016 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-12-09 15:19:41,216 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:19:41,216 INFO L425 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err5INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-12-09 15:19:41,217 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:19:41,217 INFO L85 PathProgramCache]: Analyzing trace with hash 1250788021, now seen corresponding path program 2 times [2023-12-09 15:19:41,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:19:41,217 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1857895267] [2023-12-09 15:19:41,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:19:41,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:19:41,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:19:43,031 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:19:43,031 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:19:43,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1857895267] [2023-12-09 15:19:43,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1857895267] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-09 15:19:43,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [880545314] [2023-12-09 15:19:43,032 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-09 15:19:43,032 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:19:43,032 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 15:19:43,033 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-09 15:19:43,059 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-09 15:19:43,162 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-09 15:19:43,162 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-09 15:19:43,165 INFO L262 TraceCheckSpWp]: Trace formula consists of 461 conjuncts, 60 conjunts are in the unsatisfiable core [2023-12-09 15:19:43,170 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-09 15:19:43,491 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-12-09 15:19:43,619 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-12-09 15:19:43,660 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-12-09 15:19:43,935 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-09 15:19:43,936 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 15 [2023-12-09 15:19:44,023 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-09 15:19:44,024 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 15 [2023-12-09 15:19:44,123 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-09 15:19:44,124 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 15 [2023-12-09 15:19:44,369 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:19:44,370 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-09 15:20:02,890 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-09 15:20:02,891 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 57 treesize of output 46 [2023-12-09 15:20:02,896 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 1298 treesize of output 1190 [2023-12-09 15:20:02,905 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 250 treesize of output 218 [2023-12-09 15:20:02,909 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 218 treesize of output 194 [2023-12-09 15:20:02,917 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 194 treesize of output 178 [2023-12-09 15:20:02,939 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 94 treesize of output 82 [2023-12-09 15:20:03,115 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 4 refuted. 6 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-09 15:20:03,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [880545314] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-09 15:20:03,116 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-09 15:20:03,116 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 27, 23] total 63 [2023-12-09 15:20:03,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425616063] [2023-12-09 15:20:03,116 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-09 15:20:03,117 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2023-12-09 15:20:03,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:20:03,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2023-12-09 15:20:03,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=235, Invalid=3648, Unknown=23, NotChecked=0, Total=3906 [2023-12-09 15:20:03,121 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 220 [2023-12-09 15:20:03,125 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 312 places, 729 transitions, 15864 flow. Second operand has 63 states, 63 states have (on average 96.71428571428571) internal successors, (6093), 63 states have internal predecessors, (6093), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:20:03,125 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:20:03,125 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 220 [2023-12-09 15:20:03,125 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:20:12,432 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-12-09 15:20:16,389 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-12-09 15:20:18,935 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-12-09 15:20:24,667 INFO L124 PetriNetUnfolderBase]: 11149/23528 cut-off events. [2023-12-09 15:20:24,667 INFO L125 PetriNetUnfolderBase]: For 318175/327813 co-relation queries the response was YES. [2023-12-09 15:20:24,774 INFO L83 FinitePrefix]: Finished finitePrefix Result has 189708 conditions, 23528 events. 11149/23528 cut-off events. For 318175/327813 co-relation queries the response was YES. Maximal size of possible extension queue 1088. Compared 224766 event pairs, 790 based on Foata normal form. 467/22653 useless extension candidates. Maximal degree in co-relation 170538. Up to 11475 conditions per place. [2023-12-09 15:20:25,075 INFO L140 encePairwiseOnDemand]: 175/220 looper letters, 1097 selfloop transitions, 368 changer transitions 233/1778 dead transitions. [2023-12-09 15:20:25,076 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 402 places, 1778 transitions, 41953 flow [2023-12-09 15:20:25,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2023-12-09 15:20:25,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2023-12-09 15:20:25,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 9243 transitions. [2023-12-09 15:20:25,085 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.4616883116883117 [2023-12-09 15:20:25,085 INFO L72 ComplementDD]: Start complementDD. Operand 91 states and 9243 transitions. [2023-12-09 15:20:25,085 INFO L73 IsDeterministic]: Start isDeterministic. Operand 91 states and 9243 transitions. [2023-12-09 15:20:25,087 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:20:25,087 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 91 states and 9243 transitions. [2023-12-09 15:20:25,097 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 92 states, 91 states have (on average 101.57142857142857) internal successors, (9243), 91 states have internal predecessors, (9243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:20:25,112 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 92 states, 92 states have (on average 220.0) internal successors, (20240), 92 states have internal predecessors, (20240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:20:25,114 INFO L81 ComplementDD]: Finished complementDD. Result has 92 states, 92 states have (on average 220.0) internal successors, (20240), 92 states have internal predecessors, (20240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:20:25,115 INFO L308 CegarLoopForPetriNet]: 193 programPoint places, 209 predicate places. [2023-12-09 15:20:25,115 INFO L500 AbstractCegarLoop]: Abstraction has has 402 places, 1778 transitions, 41953 flow [2023-12-09 15:20:25,117 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 63 states, 63 states have (on average 96.71428571428571) internal successors, (6093), 63 states have internal predecessors, (6093), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:20:25,117 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:20:25,117 INFO L233 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:20:25,125 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-12-09 15:20:25,322 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-12-09 15:20:25,322 INFO L425 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err5INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-12-09 15:20:25,323 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:20:25,323 INFO L85 PathProgramCache]: Analyzing trace with hash 1026989411, now seen corresponding path program 3 times [2023-12-09 15:20:25,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:20:25,323 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2072938207] [2023-12-09 15:20:25,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:20:25,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:20:25,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:20:26,473 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:20:26,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:20:26,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2072938207] [2023-12-09 15:20:26,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2072938207] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-09 15:20:26,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [706930170] [2023-12-09 15:20:26,474 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-09 15:20:26,474 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:20:26,474 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 15:20:26,475 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-09 15:20:26,477 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-09 15:20:26,733 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-12-09 15:20:26,734 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-09 15:20:26,736 INFO L262 TraceCheckSpWp]: Trace formula consists of 461 conjuncts, 45 conjunts are in the unsatisfiable core [2023-12-09 15:20:26,738 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-09 15:20:27,104 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-09 15:20:27,104 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 15 [2023-12-09 15:20:27,249 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-09 15:20:27,249 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-09 15:20:27,451 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-09 15:20:27,451 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 18 [2023-12-09 15:20:27,584 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-09 15:20:27,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [706930170] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-09 15:20:27,584 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-09 15:20:27,584 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 18, 11] total 45 [2023-12-09 15:20:27,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554082373] [2023-12-09 15:20:27,585 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-09 15:20:27,585 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2023-12-09 15:20:27,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:20:27,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2023-12-09 15:20:27,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=169, Invalid=1811, Unknown=0, NotChecked=0, Total=1980 [2023-12-09 15:20:27,588 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 220 [2023-12-09 15:20:27,590 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 402 places, 1778 transitions, 41953 flow. Second operand has 45 states, 45 states have (on average 102.53333333333333) internal successors, (4614), 45 states have internal predecessors, (4614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:20:27,590 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:20:27,590 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 220 [2023-12-09 15:20:27,590 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:20:38,445 INFO L124 PetriNetUnfolderBase]: 13645/28471 cut-off events. [2023-12-09 15:20:38,445 INFO L125 PetriNetUnfolderBase]: For 428395/442124 co-relation queries the response was YES. [2023-12-09 15:20:38,579 INFO L83 FinitePrefix]: Finished finitePrefix Result has 251139 conditions, 28471 events. 13645/28471 cut-off events. For 428395/442124 co-relation queries the response was YES. Maximal size of possible extension queue 1333. Compared 278076 event pairs, 628 based on Foata normal form. 475/27389 useless extension candidates. Maximal degree in co-relation 229100. Up to 14498 conditions per place. [2023-12-09 15:20:38,894 INFO L140 encePairwiseOnDemand]: 182/220 looper letters, 1767 selfloop transitions, 297 changer transitions 350/2497 dead transitions. [2023-12-09 15:20:38,895 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 456 places, 2497 transitions, 62883 flow [2023-12-09 15:20:38,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2023-12-09 15:20:38,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2023-12-09 15:20:38,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 5834 transitions. [2023-12-09 15:20:38,901 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.4821487603305785 [2023-12-09 15:20:38,901 INFO L72 ComplementDD]: Start complementDD. Operand 55 states and 5834 transitions. [2023-12-09 15:20:38,901 INFO L73 IsDeterministic]: Start isDeterministic. Operand 55 states and 5834 transitions. [2023-12-09 15:20:38,903 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:20:38,903 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 55 states and 5834 transitions. [2023-12-09 15:20:38,909 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 56 states, 55 states have (on average 106.07272727272728) internal successors, (5834), 55 states have internal predecessors, (5834), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:20:38,918 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 56 states, 56 states have (on average 220.0) internal successors, (12320), 56 states have internal predecessors, (12320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:20:38,919 INFO L81 ComplementDD]: Finished complementDD. Result has 56 states, 56 states have (on average 220.0) internal successors, (12320), 56 states have internal predecessors, (12320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:20:38,920 INFO L308 CegarLoopForPetriNet]: 193 programPoint places, 263 predicate places. [2023-12-09 15:20:38,920 INFO L500 AbstractCegarLoop]: Abstraction has has 456 places, 2497 transitions, 62883 flow [2023-12-09 15:20:38,921 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 102.53333333333333) internal successors, (4614), 45 states have internal predecessors, (4614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:20:38,921 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:20:38,921 INFO L233 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:20:38,931 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-12-09 15:20:39,131 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-12-09 15:20:39,131 INFO L425 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err5INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-12-09 15:20:39,132 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:20:39,132 INFO L85 PathProgramCache]: Analyzing trace with hash -60356727, now seen corresponding path program 1 times [2023-12-09 15:20:39,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:20:39,132 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [923717967] [2023-12-09 15:20:39,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:20:39,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:20:39,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:20:39,965 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-09 15:20:39,966 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:20:39,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [923717967] [2023-12-09 15:20:39,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [923717967] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-09 15:20:39,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [535026918] [2023-12-09 15:20:39,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:20:39,966 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:20:39,966 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 15:20:39,967 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-09 15:20:39,971 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-09 15:20:40,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:20:40,111 INFO L262 TraceCheckSpWp]: Trace formula consists of 461 conjuncts, 41 conjunts are in the unsatisfiable core [2023-12-09 15:20:40,113 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-09 15:20:40,291 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2023-12-09 15:20:40,332 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-09 15:20:40,332 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-09 15:20:40,438 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-09 15:20:40,439 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 16 [2023-12-09 15:20:40,502 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-09 15:20:40,503 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [535026918] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-09 15:20:40,503 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-09 15:20:40,503 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 12, 10] total 24 [2023-12-09 15:20:40,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967124602] [2023-12-09 15:20:40,503 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-09 15:20:40,503 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-12-09 15:20:40,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:20:40,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-12-09 15:20:40,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=483, Unknown=0, NotChecked=0, Total=552 [2023-12-09 15:20:40,505 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 220 [2023-12-09 15:20:40,507 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 456 places, 2497 transitions, 62883 flow. Second operand has 24 states, 24 states have (on average 119.125) internal successors, (2859), 24 states have internal predecessors, (2859), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:20:40,507 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:20:40,507 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 220 [2023-12-09 15:20:40,507 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:20:50,706 INFO L124 PetriNetUnfolderBase]: 14959/30977 cut-off events. [2023-12-09 15:20:50,706 INFO L125 PetriNetUnfolderBase]: For 494172/511379 co-relation queries the response was YES. [2023-12-09 15:20:50,861 INFO L83 FinitePrefix]: Finished finitePrefix Result has 295604 conditions, 30977 events. 14959/30977 cut-off events. For 494172/511379 co-relation queries the response was YES. Maximal size of possible extension queue 1486. Compared 305379 event pairs, 604 based on Foata normal form. 413/29777 useless extension candidates. Maximal degree in co-relation 271358. Up to 16505 conditions per place. [2023-12-09 15:20:51,183 INFO L140 encePairwiseOnDemand]: 190/220 looper letters, 1936 selfloop transitions, 177 changer transitions 382/2691 dead transitions. [2023-12-09 15:20:51,183 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 484 places, 2691 transitions, 73283 flow [2023-12-09 15:20:51,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-12-09 15:20:51,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2023-12-09 15:20:51,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 3530 transitions. [2023-12-09 15:20:51,186 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5532915360501567 [2023-12-09 15:20:51,186 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 3530 transitions. [2023-12-09 15:20:51,186 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 3530 transitions. [2023-12-09 15:20:51,187 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:20:51,187 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 3530 transitions. [2023-12-09 15:20:51,190 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 121.72413793103448) internal successors, (3530), 29 states have internal predecessors, (3530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:20:51,194 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 220.0) internal successors, (6600), 30 states have internal predecessors, (6600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:20:51,194 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 220.0) internal successors, (6600), 30 states have internal predecessors, (6600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:20:51,194 INFO L308 CegarLoopForPetriNet]: 193 programPoint places, 291 predicate places. [2023-12-09 15:20:51,194 INFO L500 AbstractCegarLoop]: Abstraction has has 484 places, 2691 transitions, 73283 flow [2023-12-09 15:20:51,195 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 119.125) internal successors, (2859), 24 states have internal predecessors, (2859), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:20:51,195 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:20:51,195 INFO L233 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:20:51,199 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2023-12-09 15:20:51,399 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-12-09 15:20:51,400 INFO L425 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err5INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-12-09 15:20:51,400 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:20:51,400 INFO L85 PathProgramCache]: Analyzing trace with hash 1740215023, now seen corresponding path program 4 times [2023-12-09 15:20:51,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:20:51,400 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1329032647] [2023-12-09 15:20:51,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:20:51,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:20:51,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:20:51,909 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-09 15:20:51,909 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:20:51,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1329032647] [2023-12-09 15:20:51,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1329032647] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-09 15:20:51,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1739416346] [2023-12-09 15:20:51,909 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-09 15:20:51,910 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:20:51,910 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 15:20:51,911 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-09 15:20:51,913 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-12-09 15:20:52,048 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-09 15:20:52,048 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-09 15:20:52,050 INFO L262 TraceCheckSpWp]: Trace formula consists of 461 conjuncts, 39 conjunts are in the unsatisfiable core [2023-12-09 15:20:52,054 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-09 15:20:52,259 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-12-09 15:20:52,310 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-09 15:20:52,310 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-09 15:20:52,399 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-09 15:20:52,400 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 16 [2023-12-09 15:20:52,471 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-09 15:20:52,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1739416346] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-09 15:20:52,472 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-09 15:20:52,472 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 10] total 22 [2023-12-09 15:20:52,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1849713103] [2023-12-09 15:20:52,472 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-09 15:20:52,472 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-12-09 15:20:52,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:20:52,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-12-09 15:20:52,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=400, Unknown=0, NotChecked=0, Total=462 [2023-12-09 15:20:52,475 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 220 [2023-12-09 15:20:52,476 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 484 places, 2691 transitions, 73283 flow. Second operand has 22 states, 22 states have (on average 125.72727272727273) internal successors, (2766), 22 states have internal predecessors, (2766), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:20:52,476 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:20:52,476 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 220 [2023-12-09 15:20:52,476 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:21:05,341 INFO L124 PetriNetUnfolderBase]: 16598/33958 cut-off events. [2023-12-09 15:21:05,341 INFO L125 PetriNetUnfolderBase]: For 624541/643317 co-relation queries the response was YES. [2023-12-09 15:21:05,499 INFO L83 FinitePrefix]: Finished finitePrefix Result has 350270 conditions, 33958 events. 16598/33958 cut-off events. For 624541/643317 co-relation queries the response was YES. Maximal size of possible extension queue 1666. Compared 338202 event pairs, 960 based on Foata normal form. 301/32439 useless extension candidates. Maximal degree in co-relation 323639. Up to 18672 conditions per place. [2023-12-09 15:21:05,877 INFO L140 encePairwiseOnDemand]: 196/220 looper letters, 2135 selfloop transitions, 196 changer transitions 408/2949 dead transitions. [2023-12-09 15:21:05,878 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 510 places, 2949 transitions, 86310 flow [2023-12-09 15:21:05,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-12-09 15:21:05,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2023-12-09 15:21:05,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 3505 transitions. [2023-12-09 15:21:05,880 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5900673400673401 [2023-12-09 15:21:05,881 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 3505 transitions. [2023-12-09 15:21:05,881 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 3505 transitions. [2023-12-09 15:21:05,881 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:21:05,881 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 3505 transitions. [2023-12-09 15:21:05,885 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 28 states, 27 states have (on average 129.8148148148148) internal successors, (3505), 27 states have internal predecessors, (3505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:21:05,888 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 28 states, 28 states have (on average 220.0) internal successors, (6160), 28 states have internal predecessors, (6160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:21:05,888 INFO L81 ComplementDD]: Finished complementDD. Result has 28 states, 28 states have (on average 220.0) internal successors, (6160), 28 states have internal predecessors, (6160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:21:05,889 INFO L308 CegarLoopForPetriNet]: 193 programPoint places, 317 predicate places. [2023-12-09 15:21:05,889 INFO L500 AbstractCegarLoop]: Abstraction has has 510 places, 2949 transitions, 86310 flow [2023-12-09 15:21:05,889 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 125.72727272727273) internal successors, (2766), 22 states have internal predecessors, (2766), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:21:05,889 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:21:05,889 INFO L233 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:21:05,899 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-12-09 15:21:06,094 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-12-09 15:21:06,095 INFO L425 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err5INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-12-09 15:21:06,095 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:21:06,095 INFO L85 PathProgramCache]: Analyzing trace with hash -1252702029, now seen corresponding path program 5 times [2023-12-09 15:21:06,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:21:06,095 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [536310945] [2023-12-09 15:21:06,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:21:06,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:21:06,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:21:06,492 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-09 15:21:06,492 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:21:06,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [536310945] [2023-12-09 15:21:06,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [536310945] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-09 15:21:06,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1114822312] [2023-12-09 15:21:06,493 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-09 15:21:06,493 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:21:06,493 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 15:21:06,494 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-09 15:21:06,495 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-12-09 15:21:06,645 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2023-12-09 15:21:06,645 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-09 15:21:06,647 INFO L262 TraceCheckSpWp]: Trace formula consists of 461 conjuncts, 37 conjunts are in the unsatisfiable core [2023-12-09 15:21:06,649 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-09 15:21:06,982 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2023-12-09 15:21:07,044 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-09 15:21:07,044 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-09 15:21:07,212 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-09 15:21:07,212 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 16 [2023-12-09 15:21:07,316 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-09 15:21:07,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1114822312] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-09 15:21:07,316 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-09 15:21:07,316 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 12, 10] total 22 [2023-12-09 15:21:07,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1613250992] [2023-12-09 15:21:07,317 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-09 15:21:07,317 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-12-09 15:21:07,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:21:07,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-12-09 15:21:07,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=400, Unknown=0, NotChecked=0, Total=462 [2023-12-09 15:21:07,319 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 220 [2023-12-09 15:21:07,321 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 510 places, 2949 transitions, 86310 flow. Second operand has 22 states, 22 states have (on average 125.77272727272727) internal successors, (2767), 22 states have internal predecessors, (2767), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:21:07,321 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:21:07,321 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 220 [2023-12-09 15:21:07,321 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:21:22,290 INFO L124 PetriNetUnfolderBase]: 17985/36836 cut-off events. [2023-12-09 15:21:22,291 INFO L125 PetriNetUnfolderBase]: For 739974/763312 co-relation queries the response was YES. [2023-12-09 15:21:22,507 INFO L83 FinitePrefix]: Finished finitePrefix Result has 404214 conditions, 36836 events. 17985/36836 cut-off events. For 739974/763312 co-relation queries the response was YES. Maximal size of possible extension queue 1837. Compared 372342 event pairs, 1166 based on Foata normal form. 420/35273 useless extension candidates. Maximal degree in co-relation 375088. Up to 20549 conditions per place. [2023-12-09 15:21:22,944 INFO L140 encePairwiseOnDemand]: 196/220 looper letters, 2321 selfloop transitions, 188 changer transitions 434/3153 dead transitions. [2023-12-09 15:21:22,944 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 535 places, 3153 transitions, 98593 flow [2023-12-09 15:21:22,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-12-09 15:21:22,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2023-12-09 15:21:22,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 3359 transitions. [2023-12-09 15:21:22,947 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5872377622377623 [2023-12-09 15:21:22,947 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 3359 transitions. [2023-12-09 15:21:22,947 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 3359 transitions. [2023-12-09 15:21:22,947 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:21:22,947 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 3359 transitions. [2023-12-09 15:21:22,950 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 129.19230769230768) internal successors, (3359), 26 states have internal predecessors, (3359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:21:22,953 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 220.0) internal successors, (5940), 27 states have internal predecessors, (5940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:21:22,953 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 220.0) internal successors, (5940), 27 states have internal predecessors, (5940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:21:22,954 INFO L308 CegarLoopForPetriNet]: 193 programPoint places, 342 predicate places. [2023-12-09 15:21:22,954 INFO L500 AbstractCegarLoop]: Abstraction has has 535 places, 3153 transitions, 98593 flow [2023-12-09 15:21:22,954 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 125.77272727272727) internal successors, (2767), 22 states have internal predecessors, (2767), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:21:22,954 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:21:22,954 INFO L233 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:21:22,961 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2023-12-09 15:21:23,159 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-12-09 15:21:23,159 INFO L425 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err5INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-12-09 15:21:23,159 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:21:23,160 INFO L85 PathProgramCache]: Analyzing trace with hash -832102983, now seen corresponding path program 2 times [2023-12-09 15:21:23,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:21:23,160 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1427684282] [2023-12-09 15:21:23,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:21:23,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:21:23,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:21:24,462 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:21:24,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:21:24,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1427684282] [2023-12-09 15:21:24,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1427684282] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-09 15:21:24,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1185540431] [2023-12-09 15:21:24,463 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-09 15:21:24,463 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:21:24,463 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 15:21:24,464 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-09 15:21:24,465 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-12-09 15:21:24,710 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-09 15:21:24,710 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-09 15:21:24,712 INFO L262 TraceCheckSpWp]: Trace formula consists of 461 conjuncts, 33 conjunts are in the unsatisfiable core [2023-12-09 15:21:24,714 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-09 15:21:24,872 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2023-12-09 15:21:24,917 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-09 15:21:24,917 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-09 15:21:25,027 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-09 15:21:25,027 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 16 [2023-12-09 15:21:25,103 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-09 15:21:25,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1185540431] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-09 15:21:25,104 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-09 15:21:25,104 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 11, 10] total 34 [2023-12-09 15:21:25,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145588244] [2023-12-09 15:21:25,104 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-09 15:21:25,104 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-12-09 15:21:25,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:21:25,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-12-09 15:21:25,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=1025, Unknown=0, NotChecked=0, Total=1122 [2023-12-09 15:21:25,107 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 220 [2023-12-09 15:21:25,108 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 535 places, 3153 transitions, 98593 flow. Second operand has 34 states, 34 states have (on average 100.91176470588235) internal successors, (3431), 34 states have internal predecessors, (3431), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:21:25,108 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:21:25,108 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 220 [2023-12-09 15:21:25,108 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:21:45,189 INFO L124 PetriNetUnfolderBase]: 19311/39481 cut-off events. [2023-12-09 15:21:45,190 INFO L125 PetriNetUnfolderBase]: For 850140/879197 co-relation queries the response was YES. [2023-12-09 15:21:45,399 INFO L83 FinitePrefix]: Finished finitePrefix Result has 461122 conditions, 39481 events. 19311/39481 cut-off events. For 850140/879197 co-relation queries the response was YES. Maximal size of possible extension queue 2016. Compared 403035 event pairs, 869 based on Foata normal form. 491/37863 useless extension candidates. Maximal degree in co-relation 429436. Up to 22335 conditions per place. [2023-12-09 15:21:45,915 INFO L140 encePairwiseOnDemand]: 185/220 looper letters, 2558 selfloop transitions, 276 changer transitions 466/3383 dead transitions. [2023-12-09 15:21:45,915 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 578 places, 3383 transitions, 112503 flow [2023-12-09 15:21:45,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2023-12-09 15:21:45,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2023-12-09 15:21:45,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 4531 transitions. [2023-12-09 15:21:45,919 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.46807851239669424 [2023-12-09 15:21:45,919 INFO L72 ComplementDD]: Start complementDD. Operand 44 states and 4531 transitions. [2023-12-09 15:21:45,919 INFO L73 IsDeterministic]: Start isDeterministic. Operand 44 states and 4531 transitions. [2023-12-09 15:21:45,920 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:21:45,920 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 44 states and 4531 transitions. [2023-12-09 15:21:45,924 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 45 states, 44 states have (on average 102.97727272727273) internal successors, (4531), 44 states have internal predecessors, (4531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:21:45,934 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 45 states, 45 states have (on average 220.0) internal successors, (9900), 45 states have internal predecessors, (9900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:21:45,934 INFO L81 ComplementDD]: Finished complementDD. Result has 45 states, 45 states have (on average 220.0) internal successors, (9900), 45 states have internal predecessors, (9900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:21:45,935 INFO L308 CegarLoopForPetriNet]: 193 programPoint places, 385 predicate places. [2023-12-09 15:21:45,935 INFO L500 AbstractCegarLoop]: Abstraction has has 578 places, 3383 transitions, 112503 flow [2023-12-09 15:21:45,936 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 100.91176470588235) internal successors, (3431), 34 states have internal predecessors, (3431), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:21:45,936 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:21:45,936 INFO L233 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:21:45,942 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2023-12-09 15:21:46,142 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:21:46,143 INFO L425 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err5INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-12-09 15:21:46,143 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:21:46,143 INFO L85 PathProgramCache]: Analyzing trace with hash -1748583362, now seen corresponding path program 1 times [2023-12-09 15:21:46,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:21:46,143 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [239629422] [2023-12-09 15:21:46,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:21:46,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:21:46,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:21:47,552 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:21:47,552 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:21:47,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [239629422] [2023-12-09 15:21:47,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [239629422] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-09 15:21:47,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2057073456] [2023-12-09 15:21:47,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:21:47,553 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:21:47,553 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 15:21:47,553 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-09 15:21:47,554 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-12-09 15:21:47,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:21:47,695 INFO L262 TraceCheckSpWp]: Trace formula consists of 461 conjuncts, 41 conjunts are in the unsatisfiable core [2023-12-09 15:21:47,697 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-09 15:21:47,905 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2023-12-09 15:21:47,925 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-09 15:21:47,925 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-09 15:21:48,045 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-09 15:21:48,046 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 14 [2023-12-09 15:21:48,093 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-09 15:21:48,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2057073456] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-09 15:21:48,093 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-09 15:21:48,093 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 12, 10] total 35 [2023-12-09 15:21:48,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105043406] [2023-12-09 15:21:48,094 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-09 15:21:48,094 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2023-12-09 15:21:48,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:21:48,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2023-12-09 15:21:48,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=1096, Unknown=0, NotChecked=0, Total=1190 [2023-12-09 15:21:48,097 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 220 [2023-12-09 15:21:48,098 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 578 places, 3383 transitions, 112503 flow. Second operand has 35 states, 35 states have (on average 101.02857142857142) internal successors, (3536), 35 states have internal predecessors, (3536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:21:48,098 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:21:48,098 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 220 [2023-12-09 15:21:48,098 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:22:16,920 INFO L124 PetriNetUnfolderBase]: 23237/48054 cut-off events. [2023-12-09 15:22:16,921 INFO L125 PetriNetUnfolderBase]: For 1103660/1138879 co-relation queries the response was YES. [2023-12-09 15:22:17,189 INFO L83 FinitePrefix]: Finished finitePrefix Result has 587676 conditions, 48054 events. 23237/48054 cut-off events. For 1103660/1138879 co-relation queries the response was YES. Maximal size of possible extension queue 2526. Compared 514460 event pairs, 862 based on Foata normal form. 1013/46468 useless extension candidates. Maximal degree in co-relation 552125. Up to 27665 conditions per place. [2023-12-09 15:22:17,998 INFO L140 encePairwiseOnDemand]: 183/220 looper letters, 2876 selfloop transitions, 677 changer transitions 511/4147 dead transitions. [2023-12-09 15:22:17,998 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 631 places, 4147 transitions, 145588 flow [2023-12-09 15:22:17,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2023-12-09 15:22:17,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2023-12-09 15:22:18,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 5604 transitions. [2023-12-09 15:22:18,002 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.4717171717171717 [2023-12-09 15:22:18,002 INFO L72 ComplementDD]: Start complementDD. Operand 54 states and 5604 transitions. [2023-12-09 15:22:18,002 INFO L73 IsDeterministic]: Start isDeterministic. Operand 54 states and 5604 transitions. [2023-12-09 15:22:18,003 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:22:18,003 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 54 states and 5604 transitions. [2023-12-09 15:22:18,008 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 55 states, 54 states have (on average 103.77777777777777) internal successors, (5604), 54 states have internal predecessors, (5604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:22:18,014 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 55 states, 55 states have (on average 220.0) internal successors, (12100), 55 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) [2023-12-09 15:22:18,014 INFO L81 ComplementDD]: Finished complementDD. Result has 55 states, 55 states have (on average 220.0) internal successors, (12100), 55 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) [2023-12-09 15:22:18,015 INFO L308 CegarLoopForPetriNet]: 193 programPoint places, 438 predicate places. [2023-12-09 15:22:18,015 INFO L500 AbstractCegarLoop]: Abstraction has has 631 places, 4147 transitions, 145588 flow [2023-12-09 15:22:18,015 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 101.02857142857142) internal successors, (3536), 35 states have internal predecessors, (3536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:22:18,015 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:22:18,015 INFO L233 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:22:18,021 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-12-09 15:22:18,221 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:22:18,221 INFO L425 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err5INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-12-09 15:22:18,222 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:22:18,222 INFO L85 PathProgramCache]: Analyzing trace with hash 446137711, now seen corresponding path program 6 times [2023-12-09 15:22:18,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:22:18,222 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [210111680] [2023-12-09 15:22:18,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:22:18,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:22:18,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:22:18,627 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-09 15:22:18,627 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:22:18,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [210111680] [2023-12-09 15:22:18,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [210111680] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-09 15:22:18,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [763864008] [2023-12-09 15:22:18,627 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-09 15:22:18,627 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:22:18,627 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 15:22:18,628 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-09 15:22:18,641 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-12-09 15:22:18,803 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-12-09 15:22:18,803 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-09 15:22:18,805 INFO L262 TraceCheckSpWp]: Trace formula consists of 461 conjuncts, 68 conjunts are in the unsatisfiable core [2023-12-09 15:22:18,808 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-09 15:22:18,974 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-12-09 15:22:19,202 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-09 15:22:19,376 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-12-09 15:22:19,442 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-12-09 15:22:19,443 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-12-09 15:22:19,497 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-12-09 15:22:19,607 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-12-09 15:22:19,666 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-12-09 15:22:19,821 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-12-09 15:22:19,862 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:22:19,862 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-09 15:22:20,079 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_845 (Array Int Int)) (v_ArrVal_844 (Array Int Int))) (let ((.cse0 (select (store (store |c_#memory_int| |c_thread1Thread1of1ForFork2_~#t2~0.base| v_ArrVal_844) |c_thread1Thread1of1ForFork2_~#t3~0.base| v_ArrVal_845) c_~X_0~0.base))) (= (+ (select .cse0 (+ c_~X_0~0.offset 4 (* 4 c_~i_3~0))) c_~s_2~0) (select .cse0 (+ c_~X_0~0.offset 4))))) is different from false [2023-12-09 15:22:20,086 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-09 15:22:20,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [763864008] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-09 15:22:20,086 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-09 15:22:20,086 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 26, 12] total 41 [2023-12-09 15:22:20,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801169119] [2023-12-09 15:22:20,086 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-09 15:22:20,087 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2023-12-09 15:22:20,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:22:20,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2023-12-09 15:22:20,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=1409, Unknown=6, NotChecked=76, Total=1640 [2023-12-09 15:22:20,089 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 220 [2023-12-09 15:22:20,091 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 631 places, 4147 transitions, 145588 flow. Second operand has 41 states, 41 states have (on average 100.70731707317073) internal successors, (4129), 41 states have internal predecessors, (4129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:22:20,091 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:22:20,091 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 220 [2023-12-09 15:22:20,091 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:22:56,271 INFO L124 PetriNetUnfolderBase]: 24625/50224 cut-off events. [2023-12-09 15:22:56,271 INFO L125 PetriNetUnfolderBase]: For 1183082/1211603 co-relation queries the response was YES. [2023-12-09 15:22:56,580 INFO L83 FinitePrefix]: Finished finitePrefix Result has 656751 conditions, 50224 events. 24625/50224 cut-off events. For 1183082/1211603 co-relation queries the response was YES. Maximal size of possible extension queue 2635. Compared 534493 event pairs, 1293 based on Foata normal form. 1015/48620 useless extension candidates. Maximal degree in co-relation 618298. Up to 29549 conditions per place. [2023-12-09 15:22:57,455 INFO L140 encePairwiseOnDemand]: 183/220 looper letters, 3340 selfloop transitions, 555 changer transitions 539/4517 dead transitions. [2023-12-09 15:22:57,455 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 686 places, 4517 transitions, 166877 flow [2023-12-09 15:22:57,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2023-12-09 15:22:57,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2023-12-09 15:22:57,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 5768 transitions. [2023-12-09 15:22:57,459 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.4681818181818182 [2023-12-09 15:22:57,459 INFO L72 ComplementDD]: Start complementDD. Operand 56 states and 5768 transitions. [2023-12-09 15:22:57,459 INFO L73 IsDeterministic]: Start isDeterministic. Operand 56 states and 5768 transitions. [2023-12-09 15:22:57,460 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:22:57,460 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 56 states and 5768 transitions. [2023-12-09 15:22:57,468 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 57 states, 56 states have (on average 103.0) internal successors, (5768), 56 states have internal predecessors, (5768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:22:57,475 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 57 states, 57 states have (on average 220.0) internal successors, (12540), 57 states have internal predecessors, (12540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:22:57,476 INFO L81 ComplementDD]: Finished complementDD. Result has 57 states, 57 states have (on average 220.0) internal successors, (12540), 57 states have internal predecessors, (12540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:22:57,476 INFO L308 CegarLoopForPetriNet]: 193 programPoint places, 493 predicate places. [2023-12-09 15:22:57,476 INFO L500 AbstractCegarLoop]: Abstraction has has 686 places, 4517 transitions, 166877 flow [2023-12-09 15:22:57,477 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 100.70731707317073) internal successors, (4129), 41 states have internal predecessors, (4129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:22:57,477 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:22:57,477 INFO L233 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:22:57,486 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2023-12-09 15:22:57,682 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:22:57,683 INFO L425 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err5INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-12-09 15:22:57,683 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:22:57,683 INFO L85 PathProgramCache]: Analyzing trace with hash -1494513488, now seen corresponding path program 2 times [2023-12-09 15:22:57,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:22:57,683 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1565009132] [2023-12-09 15:22:57,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:22:57,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:22:57,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:22:58,354 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-09 15:22:58,355 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:22:58,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1565009132] [2023-12-09 15:22:58,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1565009132] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-09 15:22:58,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [682390088] [2023-12-09 15:22:58,355 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-09 15:22:58,355 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:22:58,355 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 15:22:58,356 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-09 15:22:58,358 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-12-09 15:22:58,529 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-09 15:22:58,530 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-09 15:22:58,532 INFO L262 TraceCheckSpWp]: Trace formula consists of 461 conjuncts, 67 conjunts are in the unsatisfiable core [2023-12-09 15:22:58,535 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-09 15:22:58,689 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-12-09 15:22:58,892 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-12-09 15:22:59,036 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-12-09 15:22:59,084 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-09 15:22:59,085 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 12 [2023-12-09 15:22:59,123 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-12-09 15:22:59,152 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-12-09 15:22:59,152 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-12-09 15:22:59,222 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-12-09 15:22:59,264 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-12-09 15:22:59,374 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2023-12-09 15:22:59,412 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:22:59,412 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-09 15:22:59,589 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_901 (Array Int Int))) (let ((.cse0 (select (store |c_#memory_int| |c_thread1Thread1of1ForFork2_~#t3~0.base| v_ArrVal_901) c_~X_0~0.base))) (= (+ (select .cse0 (+ c_~X_0~0.offset 4 (* 4 c_~i_3~0))) c_~s_2~0) (select .cse0 (+ c_~X_0~0.offset 4))))) is different from false [2023-12-09 15:22:59,603 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_900 (Array Int Int)) (v_ArrVal_901 (Array Int Int))) (let ((.cse0 (select (store (store |c_#memory_int| |c_thread1Thread1of1ForFork2_~#t2~0.base| v_ArrVal_900) |c_thread1Thread1of1ForFork2_~#t3~0.base| v_ArrVal_901) c_~X_0~0.base))) (= (+ (select .cse0 (+ c_~X_0~0.offset 4 (* 4 c_~i_3~0))) c_~s_2~0) (select .cse0 (+ c_~X_0~0.offset 4))))) is different from false [2023-12-09 15:22:59,610 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-09 15:22:59,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [682390088] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-09 15:22:59,610 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-09 15:22:59,610 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 26, 12] total 41 [2023-12-09 15:22:59,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875543436] [2023-12-09 15:22:59,610 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-09 15:22:59,611 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2023-12-09 15:22:59,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:22:59,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2023-12-09 15:22:59,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=1359, Unknown=2, NotChecked=150, Total=1640 [2023-12-09 15:22:59,614 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 220 [2023-12-09 15:22:59,615 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 686 places, 4517 transitions, 166877 flow. Second operand has 41 states, 41 states have (on average 100.73170731707317) internal successors, (4130), 41 states have internal predecessors, (4130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:22:59,615 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:22:59,615 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 220 [2023-12-09 15:22:59,615 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand Received shutdown request... [2023-12-09 15:23:18,889 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-09 15:23:18,889 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-09 15:23:18,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2023-12-09 15:23:18,965 INFO L810 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (6 of 7 remaining) [2023-12-09 15:23:18,972 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-12-09 15:23:19,165 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2023-12-09 15:23:19,166 WARN L624 AbstractCegarLoop]: Verification canceled: while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (41states, 96/220 universal loopers) in iteration 22,while PetriNetUnfolder was constructing finite prefix that currently has 306280 conditions, 22769 events (10971/22768 cut-off events. For 633686/659734 co-relation queries the response was YES. Maximal size of possible extension queue 2769. Compared 249163 event pairs, 581 based on Foata normal form. 699/24777 useless extension candidates. Maximal degree in co-relation 277192. Up to 12198 conditions per place.). [2023-12-09 15:23:19,167 INFO L810 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 7 remaining) [2023-12-09 15:23:19,167 INFO L810 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err5INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 7 remaining) [2023-12-09 15:23:19,167 INFO L810 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 7 remaining) [2023-12-09 15:23:19,167 INFO L810 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 7 remaining) [2023-12-09 15:23:19,167 INFO L810 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Thread1of1ForFork2Err0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 7 remaining) [2023-12-09 15:23:19,168 INFO L810 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Thread1of1ForFork2Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 7 remaining) [2023-12-09 15:23:19,169 INFO L457 BasicCegarLoop]: Path program histogram: [6, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2023-12-09 15:23:19,171 INFO L222 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-12-09 15:23:19,171 INFO L172 ceAbstractionStarter]: Computing trace abstraction results [2023-12-09 15:23:19,174 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 03:23:19 BasicIcfg [2023-12-09 15:23:19,174 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-09 15:23:19,174 INFO L158 Benchmark]: Toolchain (without parser) took 235963.13ms. Allocated memory was 215.0MB in the beginning and 6.1GB in the end (delta: 5.9GB). Free memory was 172.9MB in the beginning and 2.9GB in the end (delta: -2.7GB). Peak memory consumption was 3.3GB. Max. memory is 8.0GB. [2023-12-09 15:23:19,174 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 215.0MB. Free memory is still 162.2MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-09 15:23:19,174 INFO L158 Benchmark]: CACSL2BoogieTranslator took 185.90ms. Allocated memory is still 215.0MB. Free memory was 172.9MB in the beginning and 160.3MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2023-12-09 15:23:19,174 INFO L158 Benchmark]: Boogie Procedure Inliner took 28.09ms. Allocated memory is still 215.0MB. Free memory was 160.3MB in the beginning and 157.9MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-09 15:23:19,174 INFO L158 Benchmark]: Boogie Preprocessor took 43.10ms. Allocated memory is still 215.0MB. Free memory was 157.5MB in the beginning and 155.8MB in the end (delta: 1.7MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-12-09 15:23:19,175 INFO L158 Benchmark]: RCFGBuilder took 625.76ms. Allocated memory was 215.0MB in the beginning and 260.0MB in the end (delta: 45.1MB). Free memory was 155.4MB in the beginning and 216.3MB in the end (delta: -60.8MB). Peak memory consumption was 39.7MB. Max. memory is 8.0GB. [2023-12-09 15:23:19,175 INFO L158 Benchmark]: TraceAbstraction took 235069.07ms. Allocated memory was 260.0MB in the beginning and 6.1GB in the end (delta: 5.8GB). Free memory was 215.2MB in the beginning and 2.9GB in the end (delta: -2.6GB). Peak memory consumption was 3.3GB. Max. memory is 8.0GB. [2023-12-09 15:23:19,176 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 215.0MB. Free memory is still 162.2MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 185.90ms. Allocated memory is still 215.0MB. Free memory was 172.9MB in the beginning and 160.3MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 28.09ms. Allocated memory is still 215.0MB. Free memory was 160.3MB in the beginning and 157.9MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 43.10ms. Allocated memory is still 215.0MB. Free memory was 157.5MB in the beginning and 155.8MB in the end (delta: 1.7MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 625.76ms. Allocated memory was 215.0MB in the beginning and 260.0MB in the end (delta: 45.1MB). Free memory was 155.4MB in the beginning and 216.3MB in the end (delta: -60.8MB). Peak memory consumption was 39.7MB. Max. memory is 8.0GB. * TraceAbstraction took 235069.07ms. Allocated memory was 260.0MB in the beginning and 6.1GB in the end (delta: 5.8GB). Free memory was 215.2MB in the beginning and 2.9GB in the end (delta: -2.6GB). Peak memory consumption was 3.3GB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 144]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (41states, 96/220 universal loopers) in iteration 22,while PetriNetUnfolder was constructing finite prefix that currently has 306280 conditions, 22769 events (10971/22768 cut-off events. For 633686/659734 co-relation queries the response was YES. Maximal size of possible extension queue 2769. Compared 249163 event pairs, 581 based on Foata normal form. 699/24777 useless extension candidates. Maximal degree in co-relation 277192. Up to 12198 conditions per place.). - TimeoutResultAtElement [Line: 91]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message) Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (41states, 96/220 universal loopers) in iteration 22,while PetriNetUnfolder was constructing finite prefix that currently has 306280 conditions, 22769 events (10971/22768 cut-off events. For 633686/659734 co-relation queries the response was YES. Maximal size of possible extension queue 2769. Compared 249163 event pairs, 581 based on Foata normal form. 699/24777 useless extension candidates. Maximal degree in co-relation 277192. Up to 12198 conditions per place.). - TimeoutResultAtElement [Line: 92]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message) Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (41states, 96/220 universal loopers) in iteration 22,while PetriNetUnfolder was constructing finite prefix that currently has 306280 conditions, 22769 events (10971/22768 cut-off events. For 633686/659734 co-relation queries the response was YES. Maximal size of possible extension queue 2769. Compared 249163 event pairs, 581 based on Foata normal form. 699/24777 useless extension candidates. Maximal degree in co-relation 277192. Up to 12198 conditions per place.). - TimeoutResultAtElement [Line: 138]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message) Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (41states, 96/220 universal loopers) in iteration 22,while PetriNetUnfolder was constructing finite prefix that currently has 306280 conditions, 22769 events (10971/22768 cut-off events. For 633686/659734 co-relation queries the response was YES. Maximal size of possible extension queue 2769. Compared 249163 event pairs, 581 based on Foata normal form. 699/24777 useless extension candidates. Maximal degree in co-relation 277192. Up to 12198 conditions per place.). - TimeoutResultAtElement [Line: 139]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message) Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (41states, 96/220 universal loopers) in iteration 22,while PetriNetUnfolder was constructing finite prefix that currently has 306280 conditions, 22769 events (10971/22768 cut-off events. For 633686/659734 co-relation queries the response was YES. Maximal size of possible extension queue 2769. Compared 249163 event pairs, 581 based on Foata normal form. 699/24777 useless extension candidates. Maximal degree in co-relation 277192. Up to 12198 conditions per place.). - TimeoutResultAtElement [Line: 91]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message) Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (41states, 96/220 universal loopers) in iteration 22,while PetriNetUnfolder was constructing finite prefix that currently has 306280 conditions, 22769 events (10971/22768 cut-off events. For 633686/659734 co-relation queries the response was YES. Maximal size of possible extension queue 2769. Compared 249163 event pairs, 581 based on Foata normal form. 699/24777 useless extension candidates. Maximal degree in co-relation 277192. Up to 12198 conditions per place.). - TimeoutResultAtElement [Line: 92]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message) Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (41states, 96/220 universal loopers) in iteration 22,while PetriNetUnfolder was constructing finite prefix that currently has 306280 conditions, 22769 events (10971/22768 cut-off events. For 633686/659734 co-relation queries the response was YES. Maximal size of possible extension queue 2769. Compared 249163 event pairs, 581 based on Foata normal form. 699/24777 useless extension candidates. Maximal degree in co-relation 277192. Up to 12198 conditions per place.). - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 9 procedures, 263 locations, 7 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 234.9s, OverallIterations: 22, TraceHistogramMax: 2, PathProgramHistogramMax: 6, EmptinessCheckTime: 0.0s, AutomataDifference: 189.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 117 mSolverCounterUnknown, 7734 SdHoareTripleChecker+Valid, 22.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 7734 mSDsluCounter, 14169 SdHoareTripleChecker+Invalid, 20.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 941 IncrementalHoareTripleChecker+Unchecked, 13292 mSDsCounter, 352 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 32361 IncrementalHoareTripleChecker+Invalid, 33771 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 352 mSolverCounterUnsat, 877 mSDtfsCounter, 32361 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 117 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 6391 GetRequests, 5474 SyntacticMatches, 8 SemanticMatches, 909 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 16639 ImplicationChecksByTransitivity, 38.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=166877occurred in iteration=21, InterpolantAutomatonStates: 514, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.5s SsaConstructionTime, 1.5s SatisfiabilityAnalysisTime, 38.2s InterpolantComputationTime, 6829 NumberOfCodeBlocks, 6797 NumberOfCodeBlocksAsserted, 50 NumberOfCheckSat, 9345 ConstructedInterpolants, 68 QuantifiedInterpolants, 38377 SizeOfPredicates, 249 NumberOfNonLiveVariables, 7153 ConjunctsInSsa, 512 ConjunctsInUnsatCore, 52 InterpolantComputations, 10 PerfectInterpolantSequences, 272/564 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