/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/25_stack_longer-2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-wip.dk.empire-owicki-a20a710-m [2023-12-09 14:53:15,304 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-09 14:53:15,395 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 14:53:15,426 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-09 14:53:15,427 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-09 14:53:15,427 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-09 14:53:15,428 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-09 14:53:15,428 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-09 14:53:15,429 INFO L153 SettingsManager]: * Use SBE=true [2023-12-09 14:53:15,432 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-09 14:53:15,433 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-09 14:53:15,434 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-09 14:53:15,434 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-09 14:53:15,435 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-09 14:53:15,435 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-09 14:53:15,435 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-09 14:53:15,436 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-09 14:53:15,436 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-09 14:53:15,436 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-09 14:53:15,437 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-09 14:53:15,437 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-09 14:53:15,438 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-09 14:53:15,438 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-09 14:53:15,438 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-12-09 14:53:15,439 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-09 14:53:15,439 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-09 14:53:15,439 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-09 14:53:15,439 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-09 14:53:15,440 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-09 14:53:15,440 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-09 14:53:15,441 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-09 14:53:15,441 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-09 14:53:15,441 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-09 14:53:15,441 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> true [2023-12-09 14:53:15,683 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-09 14:53:15,711 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-09 14:53:15,714 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-09 14:53:15,715 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-09 14:53:15,715 INFO L274 PluginConnector]: CDTParser initialized [2023-12-09 14:53:15,716 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-ext/25_stack_longer-2.i [2023-12-09 14:53:16,897 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-09 14:53:17,159 INFO L384 CDTParser]: Found 1 translation units. [2023-12-09 14:53:17,160 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/25_stack_longer-2.i [2023-12-09 14:53:17,174 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4f2916906/3942773da63d431b82923b83afa0f06b/FLAGf854227b4 [2023-12-09 14:53:17,187 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4f2916906/3942773da63d431b82923b83afa0f06b [2023-12-09 14:53:17,189 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-09 14:53:17,190 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-09 14:53:17,191 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-09 14:53:17,191 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-09 14:53:17,195 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-09 14:53:17,196 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 02:53:17" (1/1) ... [2023-12-09 14:53:17,197 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6266b90f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:53:17, skipping insertion in model container [2023-12-09 14:53:17,197 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 02:53:17" (1/1) ... [2023-12-09 14:53:17,247 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-09 14:53:17,569 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/25_stack_longer-2.i[31179,31192] [2023-12-09 14:53:17,582 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-09 14:53:17,595 INFO L202 MainTranslator]: Completed pre-run [2023-12-09 14:53:17,646 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/25_stack_longer-2.i[31179,31192] [2023-12-09 14:53:17,660 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-09 14:53:17,695 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-12-09 14:53:17,695 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-12-09 14:53:17,702 INFO L206 MainTranslator]: Completed translation [2023-12-09 14:53:17,703 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:53:17 WrapperNode [2023-12-09 14:53:17,703 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-09 14:53:17,705 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-09 14:53:17,705 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-09 14:53:17,705 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-09 14:53:17,711 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:53:17" (1/1) ... [2023-12-09 14:53:17,742 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:53:17" (1/1) ... [2023-12-09 14:53:17,773 INFO L138 Inliner]: procedures = 179, calls = 36, calls flagged for inlining = 18, calls inlined = 22, statements flattened = 174 [2023-12-09 14:53:17,773 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-09 14:53:17,774 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-09 14:53:17,774 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-09 14:53:17,774 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-09 14:53:17,783 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:53:17" (1/1) ... [2023-12-09 14:53:17,784 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:53:17" (1/1) ... [2023-12-09 14:53:17,798 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:53:17" (1/1) ... [2023-12-09 14:53:17,798 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:53:17" (1/1) ... [2023-12-09 14:53:17,804 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:53:17" (1/1) ... [2023-12-09 14:53:17,807 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:53:17" (1/1) ... [2023-12-09 14:53:17,809 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:53:17" (1/1) ... [2023-12-09 14:53:17,810 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:53:17" (1/1) ... [2023-12-09 14:53:17,829 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-09 14:53:17,830 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-09 14:53:17,831 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-09 14:53:17,831 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-09 14:53:17,836 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:53:17" (1/1) ... [2023-12-09 14:53:17,841 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-09 14:53:17,852 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 14:53:17,870 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 14:53:17,902 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 14:53:17,911 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-12-09 14:53:17,912 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2023-12-09 14:53:17,912 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2023-12-09 14:53:17,913 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-12-09 14:53:17,913 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-12-09 14:53:17,913 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-09 14:53:17,913 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-09 14:53:17,913 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-09 14:53:17,913 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-09 14:53:17,913 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-12-09 14:53:17,913 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-09 14:53:17,913 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-09 14:53:17,915 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 14:53:18,055 INFO L241 CfgBuilder]: Building ICFG [2023-12-09 14:53:18,058 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-09 14:53:18,334 INFO L282 CfgBuilder]: Performing block encoding [2023-12-09 14:53:18,488 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-09 14:53:18,490 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-12-09 14:53:18,492 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 02:53:18 BoogieIcfgContainer [2023-12-09 14:53:18,492 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-09 14:53:18,494 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-09 14:53:18,494 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-09 14:53:18,497 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-09 14:53:18,498 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 02:53:17" (1/3) ... [2023-12-09 14:53:18,499 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@853e32f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 02:53:18, skipping insertion in model container [2023-12-09 14:53:18,499 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:53:17" (2/3) ... [2023-12-09 14:53:18,499 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@853e32f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 02:53:18, skipping insertion in model container [2023-12-09 14:53:18,500 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 02:53:18" (3/3) ... [2023-12-09 14:53:18,501 INFO L112 eAbstractionObserver]: Analyzing ICFG 25_stack_longer-2.i [2023-12-09 14:53:18,516 INFO L197 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-09 14:53:18,516 INFO L156 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-09 14:53:18,516 INFO L508 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-12-09 14:53:18,594 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-12-09 14:53:18,632 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 95 places, 99 transitions, 202 flow [2023-12-09 14:53:18,682 INFO L124 PetriNetUnfolderBase]: 8/110 cut-off events. [2023-12-09 14:53:18,683 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-12-09 14:53:18,688 INFO L83 FinitePrefix]: Finished finitePrefix Result has 114 conditions, 110 events. 8/110 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 111 event pairs, 0 based on Foata normal form. 0/99 useless extension candidates. Maximal degree in co-relation 78. Up to 4 conditions per place. [2023-12-09 14:53:18,688 INFO L82 GeneralOperation]: Start removeDead. Operand has 95 places, 99 transitions, 202 flow [2023-12-09 14:53:18,692 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 95 places, 99 transitions, 202 flow [2023-12-09 14:53:18,700 INFO L361 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-09 14:53:18,706 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;@70ff5599, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-09 14:53:18,706 INFO L363 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-12-09 14:53:18,717 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-12-09 14:53:18,717 INFO L124 PetriNetUnfolderBase]: 3/52 cut-off events. [2023-12-09 14:53:18,717 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-12-09 14:53:18,718 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 14:53:18,718 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] [2023-12-09 14:53:18,719 INFO L425 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-09 14:53:18,723 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 14:53:18,723 INFO L85 PathProgramCache]: Analyzing trace with hash -2130366652, now seen corresponding path program 1 times [2023-12-09 14:53:18,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 14:53:18,731 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [107450896] [2023-12-09 14:53:18,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 14:53:18,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 14:53:18,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-09 14:53:18,860 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-12-09 14:53:18,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-09 14:53:18,908 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-12-09 14:53:18,910 INFO L372 BasicCegarLoop]: Counterexample is feasible [2023-12-09 14:53:18,910 INFO L810 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 3 remaining) [2023-12-09 14:53:18,912 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 3 remaining) [2023-12-09 14:53:18,912 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 3 remaining) [2023-12-09 14:53:18,912 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-09 14:53:18,913 INFO L457 BasicCegarLoop]: Path program histogram: [1] [2023-12-09 14:53:18,915 WARN L227 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-12-09 14:53:18,915 INFO L508 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-12-09 14:53:18,986 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-12-09 14:53:18,993 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 157 places, 165 transitions, 340 flow [2023-12-09 14:53:19,060 INFO L124 PetriNetUnfolderBase]: 15/189 cut-off events. [2023-12-09 14:53:19,061 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-12-09 14:53:19,066 INFO L83 FinitePrefix]: Finished finitePrefix Result has 197 conditions, 189 events. 15/189 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 353 event pairs, 0 based on Foata normal form. 0/169 useless extension candidates. Maximal degree in co-relation 143. Up to 6 conditions per place. [2023-12-09 14:53:19,066 INFO L82 GeneralOperation]: Start removeDead. Operand has 157 places, 165 transitions, 340 flow [2023-12-09 14:53:19,073 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 157 places, 165 transitions, 340 flow [2023-12-09 14:53:19,076 INFO L361 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-09 14:53:19,077 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;@70ff5599, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-09 14:53:19,077 INFO L363 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-12-09 14:53:19,103 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-12-09 14:53:19,104 INFO L124 PetriNetUnfolderBase]: 7/92 cut-off events. [2023-12-09 14:53:19,104 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-12-09 14:53:19,104 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 14:53:19,104 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, 1, 1, 1, 1, 1] [2023-12-09 14:53:19,104 INFO L425 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-12-09 14:53:19,105 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 14:53:19,105 INFO L85 PathProgramCache]: Analyzing trace with hash 1959337959, now seen corresponding path program 1 times [2023-12-09 14:53:19,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 14:53:19,105 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [93312330] [2023-12-09 14:53:19,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 14:53:19,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 14:53:19,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-09 14:53:19,143 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-12-09 14:53:19,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-09 14:53:19,167 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-12-09 14:53:19,167 INFO L372 BasicCegarLoop]: Counterexample is feasible [2023-12-09 14:53:19,167 INFO L810 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 4 remaining) [2023-12-09 14:53:19,168 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 4 remaining) [2023-12-09 14:53:19,168 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 4 remaining) [2023-12-09 14:53:19,168 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 4 remaining) [2023-12-09 14:53:19,168 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-09 14:53:19,168 INFO L457 BasicCegarLoop]: Path program histogram: [1] [2023-12-09 14:53:19,169 WARN L227 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-12-09 14:53:19,169 INFO L508 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-12-09 14:53:19,249 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-12-09 14:53:19,254 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 219 places, 231 transitions, 480 flow [2023-12-09 14:53:19,299 INFO L124 PetriNetUnfolderBase]: 22/268 cut-off events. [2023-12-09 14:53:19,299 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-12-09 14:53:19,305 INFO L83 FinitePrefix]: Finished finitePrefix Result has 281 conditions, 268 events. 22/268 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 703 event pairs, 0 based on Foata normal form. 0/239 useless extension candidates. Maximal degree in co-relation 208. Up to 8 conditions per place. [2023-12-09 14:53:19,305 INFO L82 GeneralOperation]: Start removeDead. Operand has 219 places, 231 transitions, 480 flow [2023-12-09 14:53:19,308 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 219 places, 231 transitions, 480 flow [2023-12-09 14:53:19,309 INFO L361 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-09 14:53:19,312 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;@70ff5599, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-09 14:53:19,312 INFO L363 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2023-12-09 14:53:19,326 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-12-09 14:53:19,326 INFO L124 PetriNetUnfolderBase]: 11/136 cut-off events. [2023-12-09 14:53:19,326 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-12-09 14:53:19,326 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 14:53:19,326 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, 1, 1, 1, 1, 1] [2023-12-09 14:53:19,327 INFO L425 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-12-09 14:53:19,327 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 14:53:19,327 INFO L85 PathProgramCache]: Analyzing trace with hash -2109968913, now seen corresponding path program 1 times [2023-12-09 14:53:19,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 14:53:19,328 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1255907434] [2023-12-09 14:53:19,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 14:53:19,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 14:53:19,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-09 14:53:19,371 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-12-09 14:53:19,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-09 14:53:19,415 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-12-09 14:53:19,415 INFO L372 BasicCegarLoop]: Counterexample is feasible [2023-12-09 14:53:19,415 INFO L810 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 5 remaining) [2023-12-09 14:53:19,416 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (3 of 5 remaining) [2023-12-09 14:53:19,416 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 5 remaining) [2023-12-09 14:53:19,416 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 5 remaining) [2023-12-09 14:53:19,416 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 5 remaining) [2023-12-09 14:53:19,416 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-09 14:53:19,417 INFO L457 BasicCegarLoop]: Path program histogram: [1] [2023-12-09 14:53:19,417 WARN L227 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2023-12-09 14:53:19,417 INFO L508 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2023-12-09 14:53:19,511 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-12-09 14:53:19,519 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 281 places, 297 transitions, 622 flow [2023-12-09 14:53:19,610 INFO L124 PetriNetUnfolderBase]: 29/347 cut-off events. [2023-12-09 14:53:19,611 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2023-12-09 14:53:19,618 INFO L83 FinitePrefix]: Finished finitePrefix Result has 366 conditions, 347 events. 29/347 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 1098 event pairs, 0 based on Foata normal form. 0/309 useless extension candidates. Maximal degree in co-relation 276. Up to 10 conditions per place. [2023-12-09 14:53:19,618 INFO L82 GeneralOperation]: Start removeDead. Operand has 281 places, 297 transitions, 622 flow [2023-12-09 14:53:19,622 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 281 places, 297 transitions, 622 flow [2023-12-09 14:53:19,623 INFO L361 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-09 14:53:19,627 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;@70ff5599, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-09 14:53:19,628 INFO L363 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2023-12-09 14:53:19,651 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-12-09 14:53:19,652 INFO L124 PetriNetUnfolderBase]: 16/192 cut-off events. [2023-12-09 14:53:19,652 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2023-12-09 14:53:19,652 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 14:53:19,652 INFO L233 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 4, 4, 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 14:53:19,652 INFO L425 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-12-09 14:53:19,653 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 14:53:19,653 INFO L85 PathProgramCache]: Analyzing trace with hash -227637592, now seen corresponding path program 1 times [2023-12-09 14:53:19,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 14:53:19,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [29552443] [2023-12-09 14:53:19,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 14:53:19,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 14:53:19,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-09 14:53:19,691 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-12-09 14:53:19,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-09 14:53:19,743 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-12-09 14:53:19,745 INFO L372 BasicCegarLoop]: Counterexample is feasible [2023-12-09 14:53:19,747 INFO L810 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 6 remaining) [2023-12-09 14:53:19,747 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (4 of 6 remaining) [2023-12-09 14:53:19,748 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (3 of 6 remaining) [2023-12-09 14:53:19,748 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 6 remaining) [2023-12-09 14:53:19,748 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 6 remaining) [2023-12-09 14:53:19,748 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 6 remaining) [2023-12-09 14:53:19,748 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-09 14:53:19,748 INFO L457 BasicCegarLoop]: Path program histogram: [1] [2023-12-09 14:53:19,749 WARN L227 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2023-12-09 14:53:19,749 INFO L508 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2023-12-09 14:53:19,835 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-12-09 14:53:19,841 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 343 places, 363 transitions, 766 flow [2023-12-09 14:53:19,930 INFO L124 PetriNetUnfolderBase]: 36/426 cut-off events. [2023-12-09 14:53:19,930 INFO L125 PetriNetUnfolderBase]: For 30/30 co-relation queries the response was YES. [2023-12-09 14:53:19,944 INFO L83 FinitePrefix]: Finished finitePrefix Result has 452 conditions, 426 events. 36/426 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1503 event pairs, 0 based on Foata normal form. 0/379 useless extension candidates. Maximal degree in co-relation 360. Up to 12 conditions per place. [2023-12-09 14:53:19,944 INFO L82 GeneralOperation]: Start removeDead. Operand has 343 places, 363 transitions, 766 flow [2023-12-09 14:53:19,949 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 343 places, 363 transitions, 766 flow [2023-12-09 14:53:19,951 INFO L361 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-09 14:53:19,953 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;@70ff5599, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-09 14:53:19,953 INFO L363 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2023-12-09 14:53:19,988 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-12-09 14:53:19,988 INFO L124 PetriNetUnfolderBase]: 21/258 cut-off events. [2023-12-09 14:53:19,988 INFO L125 PetriNetUnfolderBase]: For 30/30 co-relation queries the response was YES. [2023-12-09 14:53:19,988 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 14:53:19,988 INFO L233 CegarLoopForPetriNet]: trace histogram [6, 6, 6, 6, 5, 5, 1, 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 14:53:19,989 INFO L425 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-12-09 14:53:19,989 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 14:53:19,989 INFO L85 PathProgramCache]: Analyzing trace with hash -1656472798, now seen corresponding path program 1 times [2023-12-09 14:53:19,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 14:53:19,990 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1153245104] [2023-12-09 14:53:19,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 14:53:19,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 14:53:20,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-09 14:53:20,052 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-12-09 14:53:20,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-09 14:53:20,087 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-12-09 14:53:20,087 INFO L372 BasicCegarLoop]: Counterexample is feasible [2023-12-09 14:53:20,088 INFO L810 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 7 remaining) [2023-12-09 14:53:20,088 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (5 of 7 remaining) [2023-12-09 14:53:20,088 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (4 of 7 remaining) [2023-12-09 14:53:20,088 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (3 of 7 remaining) [2023-12-09 14:53:20,088 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 7 remaining) [2023-12-09 14:53:20,089 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 7 remaining) [2023-12-09 14:53:20,089 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 7 remaining) [2023-12-09 14:53:20,089 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-09 14:53:20,089 INFO L457 BasicCegarLoop]: Path program histogram: [1] [2023-12-09 14:53:20,090 WARN L227 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2023-12-09 14:53:20,090 INFO L508 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2023-12-09 14:53:20,176 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-12-09 14:53:20,181 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 405 places, 429 transitions, 912 flow [2023-12-09 14:53:20,329 INFO L124 PetriNetUnfolderBase]: 43/505 cut-off events. [2023-12-09 14:53:20,330 INFO L125 PetriNetUnfolderBase]: For 50/50 co-relation queries the response was YES. [2023-12-09 14:53:20,348 INFO L83 FinitePrefix]: Finished finitePrefix Result has 539 conditions, 505 events. 43/505 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1952 event pairs, 0 based on Foata normal form. 0/449 useless extension candidates. Maximal degree in co-relation 445. Up to 14 conditions per place. [2023-12-09 14:53:20,349 INFO L82 GeneralOperation]: Start removeDead. Operand has 405 places, 429 transitions, 912 flow [2023-12-09 14:53:20,355 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 405 places, 429 transitions, 912 flow [2023-12-09 14:53:20,358 INFO L361 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-09 14:53:20,362 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;@70ff5599, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-09 14:53:20,362 INFO L363 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2023-12-09 14:53:20,412 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-12-09 14:53:20,413 INFO L124 PetriNetUnfolderBase]: 27/329 cut-off events. [2023-12-09 14:53:20,413 INFO L125 PetriNetUnfolderBase]: For 50/50 co-relation queries the response was YES. [2023-12-09 14:53:20,413 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 14:53:20,413 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] [2023-12-09 14:53:20,413 INFO L425 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-12-09 14:53:20,414 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 14:53:20,414 INFO L85 PathProgramCache]: Analyzing trace with hash -679335507, now seen corresponding path program 1 times [2023-12-09 14:53:20,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 14:53:20,415 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [368116799] [2023-12-09 14:53:20,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 14:53:20,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 14:53:20,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 14:53:20,605 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 14:53:20,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 14:53:20,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [368116799] [2023-12-09 14:53:20,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [368116799] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 14:53:20,606 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 14:53:20,606 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-09 14:53:20,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [933564671] [2023-12-09 14:53:20,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 14:53:20,614 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-09 14:53:20,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 14:53:20,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-09 14:53:20,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-09 14:53:20,650 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 331 out of 429 [2023-12-09 14:53:20,657 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 405 places, 429 transitions, 912 flow. Second operand has 4 states, 4 states have (on average 333.75) internal successors, (1335), 4 states have internal predecessors, (1335), 0 states have call successors, (0), 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 14:53:20,657 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 14:53:20,657 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 331 of 429 [2023-12-09 14:53:20,658 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand