/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/pthread-ext/08_rand_cas.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-wip.dk.empire-owicki-a20a710-m [2023-12-09 14:51:36,645 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-09 14:51:36,713 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 14:51:36,737 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-09 14:51:36,738 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-09 14:51:36,738 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-09 14:51:36,738 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-09 14:51:36,739 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-09 14:51:36,739 INFO L153 SettingsManager]: * Use SBE=true [2023-12-09 14:51:36,742 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-09 14:51:36,743 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-09 14:51:36,743 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-09 14:51:36,743 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-09 14:51:36,744 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-09 14:51:36,744 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-09 14:51:36,744 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-09 14:51:36,744 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-09 14:51:36,745 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-09 14:51:36,745 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-09 14:51:36,745 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-09 14:51:36,745 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-09 14:51:36,746 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-09 14:51:36,746 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-09 14:51:36,746 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-12-09 14:51:36,746 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-09 14:51:36,747 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-09 14:51:36,747 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-09 14:51:36,747 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-09 14:51:36,747 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-09 14:51:36,748 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-09 14:51:36,748 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-09 14:51:36,749 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-09 14:51:36,749 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-09 14:51:36,749 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> true [2023-12-09 14:51:36,943 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-09 14:51:36,964 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-09 14:51:36,966 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-09 14:51:36,966 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-09 14:51:36,967 INFO L274 PluginConnector]: CDTParser initialized [2023-12-09 14:51:36,967 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-ext/08_rand_cas.i [2023-12-09 14:51:38,065 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-09 14:51:38,285 INFO L384 CDTParser]: Found 1 translation units. [2023-12-09 14:51:38,285 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/08_rand_cas.i [2023-12-09 14:51:38,299 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/18cd3256e/314b882681fe40e2b3fa82047d661830/FLAG7067eae36 [2023-12-09 14:51:38,316 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/18cd3256e/314b882681fe40e2b3fa82047d661830 [2023-12-09 14:51:38,318 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-09 14:51:38,319 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-09 14:51:38,320 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-09 14:51:38,320 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-09 14:51:38,323 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-09 14:51:38,324 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 02:51:38" (1/1) ... [2023-12-09 14:51:38,325 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3546d134 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:51:38, skipping insertion in model container [2023-12-09 14:51:38,326 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 02:51:38" (1/1) ... [2023-12-09 14:51:38,365 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-09 14:51:38,613 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/08_rand_cas.i[30837,30850] [2023-12-09 14:51:38,620 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/08_rand_cas.i[31185,31198] [2023-12-09 14:51:38,622 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/08_rand_cas.i[31448,31461] [2023-12-09 14:51:38,629 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-09 14:51:38,638 INFO L202 MainTranslator]: Completed pre-run [2023-12-09 14:51:38,667 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/08_rand_cas.i[30837,30850] [2023-12-09 14:51:38,673 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/08_rand_cas.i[31185,31198] [2023-12-09 14:51:38,674 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/08_rand_cas.i[31448,31461] [2023-12-09 14:51:38,676 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-09 14:51:38,693 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-12-09 14:51:38,694 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-12-09 14:51:38,699 INFO L206 MainTranslator]: Completed translation [2023-12-09 14:51:38,700 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:51:38 WrapperNode [2023-12-09 14:51:38,700 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-09 14:51:38,701 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-09 14:51:38,701 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-09 14:51:38,701 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-09 14:51:38,705 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:51:38" (1/1) ... [2023-12-09 14:51:38,714 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:51:38" (1/1) ... [2023-12-09 14:51:38,740 INFO L138 Inliner]: procedures = 178, calls = 38, calls flagged for inlining = 13, calls inlined = 14, statements flattened = 146 [2023-12-09 14:51:38,740 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-09 14:51:38,741 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-09 14:51:38,741 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-09 14:51:38,741 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-09 14:51:38,747 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:51:38" (1/1) ... [2023-12-09 14:51:38,748 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:51:38" (1/1) ... [2023-12-09 14:51:38,750 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:51:38" (1/1) ... [2023-12-09 14:51:38,750 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:51:38" (1/1) ... [2023-12-09 14:51:38,754 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:51:38" (1/1) ... [2023-12-09 14:51:38,757 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:51:38" (1/1) ... [2023-12-09 14:51:38,758 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:51:38" (1/1) ... [2023-12-09 14:51:38,759 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:51:38" (1/1) ... [2023-12-09 14:51:38,761 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-09 14:51:38,761 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-09 14:51:38,761 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-09 14:51:38,761 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-09 14:51:38,762 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:51:38" (1/1) ... [2023-12-09 14:51:38,766 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-09 14:51:38,774 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 14:51:38,806 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 14:51:38,809 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 14:51:38,850 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-12-09 14:51:38,850 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2023-12-09 14:51:38,851 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2023-12-09 14:51:38,851 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-12-09 14:51:38,851 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-12-09 14:51:38,851 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-09 14:51:38,851 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-09 14:51:38,851 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-09 14:51:38,851 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-09 14:51:38,853 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-12-09 14:51:38,854 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-09 14:51:38,854 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-09 14:51:38,855 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 14:51:38,976 INFO L241 CfgBuilder]: Building ICFG [2023-12-09 14:51:38,978 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-09 14:51:39,133 INFO L282 CfgBuilder]: Performing block encoding [2023-12-09 14:51:39,195 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-09 14:51:39,195 INFO L309 CfgBuilder]: Removed 4 assume(true) statements. [2023-12-09 14:51:39,197 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 02:51:39 BoogieIcfgContainer [2023-12-09 14:51:39,197 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-09 14:51:39,198 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-09 14:51:39,198 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-09 14:51:39,200 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-09 14:51:39,201 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 02:51:38" (1/3) ... [2023-12-09 14:51:39,201 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5dc91c0d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 02:51:39, skipping insertion in model container [2023-12-09 14:51:39,201 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:51:38" (2/3) ... [2023-12-09 14:51:39,201 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5dc91c0d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 02:51:39, skipping insertion in model container [2023-12-09 14:51:39,201 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 02:51:39" (3/3) ... [2023-12-09 14:51:39,202 INFO L112 eAbstractionObserver]: Analyzing ICFG 08_rand_cas.i [2023-12-09 14:51:39,214 INFO L197 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-09 14:51:39,215 INFO L156 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2023-12-09 14:51:39,215 INFO L508 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-12-09 14:51:39,261 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-12-09 14:51:39,293 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 111 places, 121 transitions, 246 flow [2023-12-09 14:51:39,358 INFO L124 PetriNetUnfolderBase]: 14/132 cut-off events. [2023-12-09 14:51:39,358 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-12-09 14:51:39,366 INFO L83 FinitePrefix]: Finished finitePrefix Result has 136 conditions, 132 events. 14/132 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 209 event pairs, 0 based on Foata normal form. 0/113 useless extension candidates. Maximal degree in co-relation 105. Up to 4 conditions per place. [2023-12-09 14:51:39,366 INFO L82 GeneralOperation]: Start removeDead. Operand has 111 places, 121 transitions, 246 flow [2023-12-09 14:51:39,372 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 111 places, 121 transitions, 246 flow [2023-12-09 14:51:39,389 INFO L361 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-09 14:51:39,395 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;@61bfb6df, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-09 14:51:39,395 INFO L363 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2023-12-09 14:51:39,412 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-12-09 14:51:39,412 INFO L124 PetriNetUnfolderBase]: 2/50 cut-off events. [2023-12-09 14:51:39,412 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-12-09 14:51:39,412 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 14:51:39,413 INFO L233 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 14:51:39,414 INFO L425 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err2ASSERT_VIOLATIONERROR_FUNCTION, thr1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-12-09 14:51:39,418 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 14:51:39,418 INFO L85 PathProgramCache]: Analyzing trace with hash -620760633, now seen corresponding path program 1 times [2023-12-09 14:51:39,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 14:51:39,430 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [959667822] [2023-12-09 14:51:39,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 14:51:39,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 14:51:39,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-09 14:51:39,541 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-12-09 14:51:39,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-09 14:51:39,590 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-12-09 14:51:39,592 INFO L372 BasicCegarLoop]: Counterexample is feasible [2023-12-09 14:51:39,593 INFO L810 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 7 remaining) [2023-12-09 14:51:39,594 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (5 of 7 remaining) [2023-12-09 14:51:39,594 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONERROR_FUNCTION (4 of 7 remaining) [2023-12-09 14:51:39,595 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONERROR_FUNCTION (3 of 7 remaining) [2023-12-09 14:51:39,595 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 7 remaining) [2023-12-09 14:51:39,595 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONERROR_FUNCTION (1 of 7 remaining) [2023-12-09 14:51:39,595 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONERROR_FUNCTION (0 of 7 remaining) [2023-12-09 14:51:39,596 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-09 14:51:39,598 INFO L457 BasicCegarLoop]: Path program histogram: [1] [2023-12-09 14:51:39,601 WARN L227 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-12-09 14:51:39,601 INFO L508 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-12-09 14:51:39,658 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-12-09 14:51:39,671 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 194 places, 214 transitions, 438 flow [2023-12-09 14:51:39,725 INFO L124 PetriNetUnfolderBase]: 27/238 cut-off events. [2023-12-09 14:51:39,725 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-12-09 14:51:39,732 INFO L83 FinitePrefix]: Finished finitePrefix Result has 246 conditions, 238 events. 27/238 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 696 event pairs, 0 based on Foata normal form. 0/202 useless extension candidates. Maximal degree in co-relation 197. Up to 6 conditions per place. [2023-12-09 14:51:39,733 INFO L82 GeneralOperation]: Start removeDead. Operand has 194 places, 214 transitions, 438 flow [2023-12-09 14:51:39,737 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 194 places, 214 transitions, 438 flow [2023-12-09 14:51:39,738 INFO L361 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-09 14:51:39,740 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;@61bfb6df, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-09 14:51:39,740 INFO L363 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2023-12-09 14:51:39,769 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-12-09 14:51:39,769 INFO L124 PetriNetUnfolderBase]: 5/95 cut-off events. [2023-12-09 14:51:39,770 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-12-09 14:51:39,770 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 14:51:39,770 INFO L233 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 14:51:39,770 INFO L425 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err2ASSERT_VIOLATIONERROR_FUNCTION, thr1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2023-12-09 14:51:39,770 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 14:51:39,771 INFO L85 PathProgramCache]: Analyzing trace with hash 2109664712, now seen corresponding path program 1 times [2023-12-09 14:51:39,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 14:51:39,771 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [271484985] [2023-12-09 14:51:39,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 14:51:39,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 14:51:39,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-09 14:51:39,806 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-12-09 14:51:39,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-09 14:51:39,841 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-12-09 14:51:39,842 INFO L372 BasicCegarLoop]: Counterexample is feasible [2023-12-09 14:51:39,843 INFO L810 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 10 remaining) [2023-12-09 14:51:39,843 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (8 of 10 remaining) [2023-12-09 14:51:39,843 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONERROR_FUNCTION (7 of 10 remaining) [2023-12-09 14:51:39,843 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONERROR_FUNCTION (6 of 10 remaining) [2023-12-09 14:51:39,844 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (5 of 10 remaining) [2023-12-09 14:51:39,844 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONERROR_FUNCTION (4 of 10 remaining) [2023-12-09 14:51:39,844 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONERROR_FUNCTION (3 of 10 remaining) [2023-12-09 14:51:39,846 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 10 remaining) [2023-12-09 14:51:39,847 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONERROR_FUNCTION (1 of 10 remaining) [2023-12-09 14:51:39,847 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONERROR_FUNCTION (0 of 10 remaining) [2023-12-09 14:51:39,847 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-09 14:51:39,847 INFO L457 BasicCegarLoop]: Path program histogram: [1] [2023-12-09 14:51:39,848 WARN L227 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-12-09 14:51:39,848 INFO L508 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-12-09 14:51:39,906 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-12-09 14:51:39,912 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 277 places, 307 transitions, 632 flow [2023-12-09 14:51:39,962 INFO L124 PetriNetUnfolderBase]: 40/344 cut-off events. [2023-12-09 14:51:39,962 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-12-09 14:51:39,966 INFO L83 FinitePrefix]: Finished finitePrefix Result has 357 conditions, 344 events. 40/344 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1253 event pairs, 0 based on Foata normal form. 0/291 useless extension candidates. Maximal degree in co-relation 289. Up to 8 conditions per place. [2023-12-09 14:51:39,966 INFO L82 GeneralOperation]: Start removeDead. Operand has 277 places, 307 transitions, 632 flow [2023-12-09 14:51:39,971 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 277 places, 307 transitions, 632 flow [2023-12-09 14:51:39,972 INFO L361 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-09 14:51:39,973 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;@61bfb6df, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-09 14:51:39,973 INFO L363 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2023-12-09 14:51:39,983 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-12-09 14:51:39,983 INFO L124 PetriNetUnfolderBase]: 8/123 cut-off events. [2023-12-09 14:51:39,984 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-12-09 14:51:39,984 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 14:51:39,984 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] [2023-12-09 14:51:39,985 INFO L425 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err2ASSERT_VIOLATIONERROR_FUNCTION, thr1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 9 more)] === [2023-12-09 14:51:39,985 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 14:51:39,985 INFO L85 PathProgramCache]: Analyzing trace with hash -1359307451, now seen corresponding path program 1 times [2023-12-09 14:51:39,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 14:51:39,985 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2091266488] [2023-12-09 14:51:39,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 14:51:39,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 14:51:40,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 14:51:40,277 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 14:51:40,277 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 14:51:40,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2091266488] [2023-12-09 14:51:40,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2091266488] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 14:51:40,279 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 14:51:40,279 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-09 14:51:40,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2055898858] [2023-12-09 14:51:40,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 14:51:40,285 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-09 14:51:40,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 14:51:40,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-09 14:51:40,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-09 14:51:40,316 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 230 out of 307 [2023-12-09 14:51:40,322 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 277 places, 307 transitions, 632 flow. Second operand has 6 states, 6 states have (on average 232.83333333333334) internal successors, (1397), 6 states have internal predecessors, (1397), 0 states have call successors, (0), 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 14:51:40,323 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 14:51:40,323 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 230 of 307 [2023-12-09 14:51:40,324 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 14:51:45,437 INFO L124 PetriNetUnfolderBase]: 11595/39425 cut-off events. [2023-12-09 14:51:45,437 INFO L125 PetriNetUnfolderBase]: For 1632/1632 co-relation queries the response was YES. [2023-12-09 14:51:45,613 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55879 conditions, 39425 events. 11595/39425 cut-off events. For 1632/1632 co-relation queries the response was YES. Maximal size of possible extension queue 875. Compared 500749 event pairs, 3713 based on Foata normal form. 9088/44973 useless extension candidates. Maximal degree in co-relation 4948. Up to 7426 conditions per place. [2023-12-09 14:51:45,785 INFO L140 encePairwiseOnDemand]: 267/307 looper letters, 151 selfloop transitions, 31 changer transitions 0/405 dead transitions. [2023-12-09 14:51:45,785 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 267 places, 405 transitions, 1276 flow [2023-12-09 14:51:45,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-09 14:51:45,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-12-09 14:51:45,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2408 transitions. [2023-12-09 14:51:45,803 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.8715164676076729 [2023-12-09 14:51:45,805 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2408 transitions. [2023-12-09 14:51:45,805 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2408 transitions. [2023-12-09 14:51:45,813 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 14:51:45,814 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2408 transitions. [2023-12-09 14:51:45,821 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 267.55555555555554) internal successors, (2408), 9 states have internal predecessors, (2408), 0 states have call successors, (0), 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 14:51:45,827 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 307.0) internal successors, (3070), 10 states have internal predecessors, (3070), 0 states have call successors, (0), 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 14:51:45,829 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 307.0) internal successors, (3070), 10 states have internal predecessors, (3070), 0 states have call successors, (0), 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 14:51:45,832 INFO L308 CegarLoopForPetriNet]: 277 programPoint places, -10 predicate places. [2023-12-09 14:51:45,833 INFO L500 AbstractCegarLoop]: Abstraction has has 267 places, 405 transitions, 1276 flow [2023-12-09 14:51:45,833 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 232.83333333333334) internal successors, (1397), 6 states have internal predecessors, (1397), 0 states have call successors, (0), 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 14:51:45,833 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 14:51:45,834 INFO L233 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 14:51:45,834 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-09 14:51:45,834 INFO L425 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err2ASSERT_VIOLATIONERROR_FUNCTION, thr1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 9 more)] === [2023-12-09 14:51:45,834 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 14:51:45,835 INFO L85 PathProgramCache]: Analyzing trace with hash 871858246, now seen corresponding path program 1 times [2023-12-09 14:51:45,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 14:51:45,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2073721319] [2023-12-09 14:51:45,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 14:51:45,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 14:51:45,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-09 14:51:45,859 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-12-09 14:51:45,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-09 14:51:45,884 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-12-09 14:51:45,884 INFO L372 BasicCegarLoop]: Counterexample is feasible [2023-12-09 14:51:45,885 INFO L810 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (12 of 13 remaining) [2023-12-09 14:51:45,885 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (11 of 13 remaining) [2023-12-09 14:51:45,885 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONERROR_FUNCTION (10 of 13 remaining) [2023-12-09 14:51:45,885 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONERROR_FUNCTION (9 of 13 remaining) [2023-12-09 14:51:45,885 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (8 of 13 remaining) [2023-12-09 14:51:45,885 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONERROR_FUNCTION (7 of 13 remaining) [2023-12-09 14:51:45,885 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONERROR_FUNCTION (6 of 13 remaining) [2023-12-09 14:51:45,885 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (5 of 13 remaining) [2023-12-09 14:51:45,885 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONERROR_FUNCTION (4 of 13 remaining) [2023-12-09 14:51:45,886 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONERROR_FUNCTION (3 of 13 remaining) [2023-12-09 14:51:45,886 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 13 remaining) [2023-12-09 14:51:45,886 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONERROR_FUNCTION (1 of 13 remaining) [2023-12-09 14:51:45,886 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONERROR_FUNCTION (0 of 13 remaining) [2023-12-09 14:51:45,886 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-09 14:51:45,886 INFO L457 BasicCegarLoop]: Path program histogram: [1, 1] [2023-12-09 14:51:45,887 WARN L227 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2023-12-09 14:51:45,887 INFO L508 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2023-12-09 14:51:45,937 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-12-09 14:51:45,940 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 360 places, 400 transitions, 828 flow [2023-12-09 14:51:45,996 INFO L124 PetriNetUnfolderBase]: 53/450 cut-off events. [2023-12-09 14:51:45,996 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2023-12-09 14:51:46,002 INFO L83 FinitePrefix]: Finished finitePrefix Result has 469 conditions, 450 events. 53/450 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 1870 event pairs, 0 based on Foata normal form. 0/380 useless extension candidates. Maximal degree in co-relation 381. Up to 10 conditions per place. [2023-12-09 14:51:46,002 INFO L82 GeneralOperation]: Start removeDead. Operand has 360 places, 400 transitions, 828 flow [2023-12-09 14:51:46,006 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 360 places, 400 transitions, 828 flow [2023-12-09 14:51:46,007 INFO L361 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-09 14:51:46,008 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;@61bfb6df, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-09 14:51:46,008 INFO L363 AbstractCegarLoop]: Starting to check reachability of 16 error locations. [2023-12-09 14:51:46,014 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-12-09 14:51:46,014 INFO L124 PetriNetUnfolderBase]: 8/118 cut-off events. [2023-12-09 14:51:46,014 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-12-09 14:51:46,014 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 14:51:46,014 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] [2023-12-09 14:51:46,014 INFO L425 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err2ASSERT_VIOLATIONERROR_FUNCTION, thr1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2023-12-09 14:51:46,015 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 14:51:46,015 INFO L85 PathProgramCache]: Analyzing trace with hash -411137851, now seen corresponding path program 1 times [2023-12-09 14:51:46,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 14:51:46,016 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1739587173] [2023-12-09 14:51:46,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 14:51:46,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 14:51:46,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 14:51:46,146 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 14:51:46,146 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 14:51:46,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1739587173] [2023-12-09 14:51:46,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1739587173] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 14:51:46,146 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 14:51:46,146 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-09 14:51:46,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2041272587] [2023-12-09 14:51:46,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 14:51:46,147 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-09 14:51:46,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 14:51:46,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-09 14:51:46,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-09 14:51:46,150 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 303 out of 400 [2023-12-09 14:51:46,151 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 360 places, 400 transitions, 828 flow. Second operand has 6 states, 6 states have (on average 305.8333333333333) internal successors, (1835), 6 states have internal predecessors, (1835), 0 states have call successors, (0), 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 14:51:46,151 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 14:51:46,151 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 303 of 400 [2023-12-09 14:51:46,151 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 14:52:56,590 INFO L124 PetriNetUnfolderBase]: 145443/435506 cut-off events. [2023-12-09 14:52:56,590 INFO L125 PetriNetUnfolderBase]: For 24846/24846 co-relation queries the response was YES. [2023-12-09 14:53:01,510 INFO L83 FinitePrefix]: Finished finitePrefix Result has 627178 conditions, 435506 events. 145443/435506 cut-off events. For 24846/24846 co-relation queries the response was YES. Maximal size of possible extension queue 8941. Compared 7162027 event pairs, 48735 based on Foata normal form. 111950/510857 useless extension candidates. Maximal degree in co-relation 55790. Up to 85961 conditions per place. [2023-12-09 14:53:05,535 INFO L140 encePairwiseOnDemand]: 350/400 looper letters, 215 selfloop transitions, 39 changer transitions 0/549 dead transitions. [2023-12-09 14:53:05,545 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 346 places, 549 transitions, 1781 flow [2023-12-09 14:53:05,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-09 14:53:05,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-12-09 14:53:05,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 3201 transitions. [2023-12-09 14:53:05,568 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.8891666666666667 [2023-12-09 14:53:05,568 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 3201 transitions. [2023-12-09 14:53:05,568 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 3201 transitions. [2023-12-09 14:53:05,569 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 14:53:05,570 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 3201 transitions. [2023-12-09 14:53:05,593 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 355.6666666666667) internal successors, (3201), 9 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 14:53:05,598 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 400.0) internal successors, (4000), 10 states have internal predecessors, (4000), 0 states have call successors, (0), 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 14:53:05,599 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 400.0) internal successors, (4000), 10 states have internal predecessors, (4000), 0 states have call successors, (0), 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 14:53:05,617 INFO L308 CegarLoopForPetriNet]: 360 programPoint places, -14 predicate places. [2023-12-09 14:53:05,617 INFO L500 AbstractCegarLoop]: Abstraction has has 346 places, 549 transitions, 1781 flow [2023-12-09 14:53:05,618 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 305.8333333333333) internal successors, (1835), 6 states have internal predecessors, (1835), 0 states have call successors, (0), 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 14:53:05,619 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 14:53:05,619 INFO L233 CegarLoopForPetriNet]: trace histogram [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] [2023-12-09 14:53:05,619 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-09 14:53:05,619 INFO L425 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err2ASSERT_VIOLATIONERROR_FUNCTION, thr1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2023-12-09 14:53:05,619 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 14:53:05,619 INFO L85 PathProgramCache]: Analyzing trace with hash -2110258607, now seen corresponding path program 1 times [2023-12-09 14:53:05,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 14:53:05,621 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1257076512] [2023-12-09 14:53:05,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 14:53:05,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 14:53:05,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 14:53:06,015 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-12-09 14:53:06,015 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 14:53:06,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1257076512] [2023-12-09 14:53:06,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1257076512] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 14:53:06,015 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 14:53:06,015 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-12-09 14:53:06,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556471568] [2023-12-09 14:53:06,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 14:53:06,017 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-09 14:53:06,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 14:53:06,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-09 14:53:06,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2023-12-09 14:53:06,020 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 286 out of 400 [2023-12-09 14:53:06,022 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 346 places, 549 transitions, 1781 flow. Second operand has 10 states, 10 states have (on average 288.4) internal successors, (2884), 10 states have internal predecessors, (2884), 0 states have call successors, (0), 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 14:53:06,023 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 14:53:06,025 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 286 of 400 [2023-12-09 14:53:06,025 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand