/root/.sdkman/candidates/java/21.0.5-tem/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.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.positions.where.we.compute.the.hoare.annotation All -i ../../../trunk/examples/svcomp/pthread-ext/09_fmaxsym-zero.i -------------------------------------------------------------------------------- This is Ultimate 0.3.0-wip.dk.empire2-owicki-f61efc6-m [2025-03-14 21:39:35,029 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-14 21:39:35,104 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 [2025-03-14 21:39:35,125 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-14 21:39:35,126 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-14 21:39:35,126 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-14 21:39:35,126 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-14 21:39:35,126 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-14 21:39:35,126 INFO L153 SettingsManager]: * Use SBE=true [2025-03-14 21:39:35,126 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-14 21:39:35,126 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-14 21:39:35,126 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-14 21:39:35,126 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-14 21:39:35,126 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-14 21:39:35,127 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-14 21:39:35,127 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-14 21:39:35,127 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-14 21:39:35,127 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-14 21:39:35,127 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-14 21:39:35,127 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-14 21:39:35,127 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-14 21:39:35,127 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-03-14 21:39:35,127 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-14 21:39:35,127 INFO L153 SettingsManager]: * To the following directory=./dump/ [2025-03-14 21:39:35,127 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-14 21:39:35,127 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2025-03-14 21:39:35,129 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-14 21:39:35,129 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-14 21:39:35,129 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-14 21:39:35,129 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-14 21:39:35,130 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-14 21:39:35,130 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-14 21:39:35,130 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> All [2025-03-14 21:39:35,373 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-14 21:39:35,378 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-14 21:39:35,379 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-14 21:39:35,380 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-14 21:39:35,380 INFO L274 PluginConnector]: CDTParser initialized [2025-03-14 21:39:35,381 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-ext/09_fmaxsym-zero.i [2025-03-14 21:39:36,536 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/39bc87e07/bc8bb0c367104555a28355f643da0eb7/FLAG26984a077 [2025-03-14 21:39:36,756 INFO L384 CDTParser]: Found 1 translation units. [2025-03-14 21:39:36,756 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/09_fmaxsym-zero.i [2025-03-14 21:39:36,767 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/39bc87e07/bc8bb0c367104555a28355f643da0eb7/FLAG26984a077 [2025-03-14 21:39:37,088 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/39bc87e07/bc8bb0c367104555a28355f643da0eb7 [2025-03-14 21:39:37,089 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-14 21:39:37,090 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2025-03-14 21:39:37,091 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-14 21:39:37,091 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-14 21:39:37,094 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-14 21:39:37,094 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.03 09:39:37" (1/1) ... [2025-03-14 21:39:37,095 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7e8dcbab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 09:39:37, skipping insertion in model container [2025-03-14 21:39:37,095 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.03 09:39:37" (1/1) ... [2025-03-14 21:39:37,118 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-14 21:39:37,290 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/09_fmaxsym-zero.i[30725,30738] [2025-03-14 21:39:37,297 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-14 21:39:37,306 INFO L200 MainTranslator]: Completed pre-run [2025-03-14 21:39:37,344 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/09_fmaxsym-zero.i[30725,30738] [2025-03-14 21:39:37,346 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-14 21:39:37,378 INFO L204 MainTranslator]: Completed translation [2025-03-14 21:39:37,379 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 09:39:37 WrapperNode [2025-03-14 21:39:37,379 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-14 21:39:37,380 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-14 21:39:37,380 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-14 21:39:37,380 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-14 21:39:37,385 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 09:39:37" (1/1) ... [2025-03-14 21:39:37,397 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 09:39:37" (1/1) ... [2025-03-14 21:39:37,412 INFO L138 Inliner]: procedures = 164, calls = 25, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 67 [2025-03-14 21:39:37,412 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-14 21:39:37,415 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-14 21:39:37,415 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-14 21:39:37,415 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-14 21:39:37,420 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 09:39:37" (1/1) ... [2025-03-14 21:39:37,420 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 09:39:37" (1/1) ... [2025-03-14 21:39:37,424 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 09:39:37" (1/1) ... [2025-03-14 21:39:37,424 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 09:39:37" (1/1) ... [2025-03-14 21:39:37,433 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 09:39:37" (1/1) ... [2025-03-14 21:39:37,433 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 09:39:37" (1/1) ... [2025-03-14 21:39:37,440 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 09:39:37" (1/1) ... [2025-03-14 21:39:37,441 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 09:39:37" (1/1) ... [2025-03-14 21:39:37,441 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 09:39:37" (1/1) ... [2025-03-14 21:39:37,443 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-14 21:39:37,443 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-03-14 21:39:37,443 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-03-14 21:39:37,443 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-03-14 21:39:37,448 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 09:39:37" (1/1) ... [2025-03-14 21:39:37,452 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2025-03-14 21:39:37,461 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-14 21:39:37,473 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) [2025-03-14 21:39:37,486 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 [2025-03-14 21:39:37,504 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2025-03-14 21:39:37,505 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2025-03-14 21:39:37,505 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2025-03-14 21:39:37,505 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2025-03-14 21:39:37,505 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-14 21:39:37,505 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2025-03-14 21:39:37,505 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2025-03-14 21:39:37,505 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-14 21:39:37,505 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-14 21:39:37,506 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-03-14 21:39:37,590 INFO L234 CfgBuilder]: Building ICFG [2025-03-14 21:39:37,591 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-14 21:39:37,696 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-03-14 21:39:37,696 INFO L283 CfgBuilder]: Performing block encoding [2025-03-14 21:39:37,706 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-14 21:39:37,707 INFO L312 CfgBuilder]: Removed 1 assume(true) statements. [2025-03-14 21:39:37,707 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.03 09:39:37 BoogieIcfgContainer [2025-03-14 21:39:37,707 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-03-14 21:39:37,709 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-14 21:39:37,709 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-14 21:39:37,719 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-14 21:39:37,720 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.03 09:39:37" (1/3) ... [2025-03-14 21:39:37,720 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@827d018 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.03 09:39:37, skipping insertion in model container [2025-03-14 21:39:37,720 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 09:39:37" (2/3) ... [2025-03-14 21:39:37,720 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@827d018 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.03 09:39:37, skipping insertion in model container [2025-03-14 21:39:37,720 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.03 09:39:37" (3/3) ... [2025-03-14 21:39:37,721 INFO L128 eAbstractionObserver]: Analyzing ICFG 09_fmaxsym-zero.i [2025-03-14 21:39:37,732 INFO L303 ceAbstractionStarter]: Automizer settings: Hoare:All NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-14 21:39:37,733 INFO L169 ceAbstractionStarter]: Applying trace abstraction to ICFG 09_fmaxsym-zero.i that has 2 procedures, 75 locations, 1 initial locations, 2 loop locations, and 1 error locations. [2025-03-14 21:39:37,733 INFO L581 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-03-14 21:39:37,766 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-03-14 21:39:37,790 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-14 21:39:37,797 INFO L333 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, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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;@1c6e21e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-14 21:39:37,797 INFO L334 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2025-03-14 21:39:37,818 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-14 21:39:37,818 INFO L124 PetriNetUnfolderBase]: 0/47 cut-off events. [2025-03-14 21:39:37,819 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-14 21:39:37,820 INFO L213 CegarLoopForPetriNet]: Found error trace [2025-03-14 21:39:37,820 INFO L221 CegarLoopForPetriNet]: trace histogram [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] [2025-03-14 21:39:37,820 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-14 21:39:37,823 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 21:39:37,824 INFO L85 PathProgramCache]: Analyzing trace with hash 1819738151, now seen corresponding path program 1 times [2025-03-14 21:39:37,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 21:39:37,828 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1792214654] [2025-03-14 21:39:37,829 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-14 21:39:37,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 21:39:37,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-14 21:39:37,907 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-03-14 21:39:37,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-14 21:39:37,959 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-03-14 21:39:37,965 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-03-14 21:39:37,965 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 3 remaining) [2025-03-14 21:39:37,970 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 3 remaining) [2025-03-14 21:39:37,970 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 3 remaining) [2025-03-14 21:39:37,971 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-14 21:39:37,971 INFO L422 BasicCegarLoop]: Path program histogram: [1] [2025-03-14 21:39:37,973 WARN L336 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2025-03-14 21:39:37,973 INFO L581 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2025-03-14 21:39:38,008 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-03-14 21:39:38,012 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-14 21:39:38,013 INFO L333 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, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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;@1c6e21e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-14 21:39:38,013 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2025-03-14 21:39:38,033 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-14 21:39:38,033 INFO L124 PetriNetUnfolderBase]: 1/72 cut-off events. [2025-03-14 21:39:38,033 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2025-03-14 21:39:38,033 INFO L213 CegarLoopForPetriNet]: Found error trace [2025-03-14 21:39:38,033 INFO L221 CegarLoopForPetriNet]: trace histogram [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, 1, 1, 1, 1, 1, 1] [2025-03-14 21:39:38,033 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2025-03-14 21:39:38,034 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 21:39:38,034 INFO L85 PathProgramCache]: Analyzing trace with hash 972848709, now seen corresponding path program 1 times [2025-03-14 21:39:38,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 21:39:38,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [168594338] [2025-03-14 21:39:38,034 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-14 21:39:38,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 21:39:38,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-14 21:39:38,051 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-03-14 21:39:38,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-14 21:39:38,075 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-03-14 21:39:38,076 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-03-14 21:39:38,076 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 4 remaining) [2025-03-14 21:39:38,076 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 4 remaining) [2025-03-14 21:39:38,076 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 4 remaining) [2025-03-14 21:39:38,076 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 4 remaining) [2025-03-14 21:39:38,076 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-14 21:39:38,076 INFO L422 BasicCegarLoop]: Path program histogram: [1] [2025-03-14 21:39:38,081 WARN L336 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2025-03-14 21:39:38,081 INFO L581 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2025-03-14 21:39:38,118 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-03-14 21:39:38,123 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-14 21:39:38,123 INFO L333 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, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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;@1c6e21e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-14 21:39:38,123 INFO L334 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2025-03-14 21:39:38,145 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-14 21:39:38,146 INFO L124 PetriNetUnfolderBase]: 2/103 cut-off events. [2025-03-14 21:39:38,146 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2025-03-14 21:39:38,146 INFO L213 CegarLoopForPetriNet]: Found error trace [2025-03-14 21:39:38,146 INFO L221 CegarLoopForPetriNet]: trace histogram [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, 1, 1, 1, 1, 1, 1] [2025-03-14 21:39:38,146 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2025-03-14 21:39:38,148 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 21:39:38,148 INFO L85 PathProgramCache]: Analyzing trace with hash 494774886, now seen corresponding path program 1 times [2025-03-14 21:39:38,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 21:39:38,148 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [458086922] [2025-03-14 21:39:38,148 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-14 21:39:38,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 21:39:38,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-14 21:39:38,164 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-03-14 21:39:38,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-14 21:39:38,186 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-03-14 21:39:38,186 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-03-14 21:39:38,187 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 5 remaining) [2025-03-14 21:39:38,187 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (3 of 5 remaining) [2025-03-14 21:39:38,187 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 5 remaining) [2025-03-14 21:39:38,187 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 5 remaining) [2025-03-14 21:39:38,187 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 5 remaining) [2025-03-14 21:39:38,187 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-14 21:39:38,187 INFO L422 BasicCegarLoop]: Path program histogram: [1] [2025-03-14 21:39:38,187 WARN L336 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2025-03-14 21:39:38,188 INFO L581 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2025-03-14 21:39:38,222 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-03-14 21:39:38,227 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-14 21:39:38,228 INFO L333 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, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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;@1c6e21e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-14 21:39:38,228 INFO L334 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2025-03-14 21:39:38,268 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-14 21:39:38,268 INFO L124 PetriNetUnfolderBase]: 4/145 cut-off events. [2025-03-14 21:39:38,268 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2025-03-14 21:39:38,268 INFO L213 CegarLoopForPetriNet]: Found error trace [2025-03-14 21:39:38,269 INFO L221 CegarLoopForPetriNet]: trace histogram [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, 1, 1, 1, 1, 1, 1] [2025-03-14 21:39:38,269 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2025-03-14 21:39:38,271 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 21:39:38,272 INFO L85 PathProgramCache]: Analyzing trace with hash -1768734326, now seen corresponding path program 1 times [2025-03-14 21:39:38,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 21:39:38,272 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [224810268] [2025-03-14 21:39:38,272 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-14 21:39:38,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 21:39:38,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-14 21:39:38,301 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-03-14 21:39:38,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-14 21:39:38,322 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-03-14 21:39:38,323 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-03-14 21:39:38,323 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 6 remaining) [2025-03-14 21:39:38,323 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (4 of 6 remaining) [2025-03-14 21:39:38,323 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (3 of 6 remaining) [2025-03-14 21:39:38,323 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 6 remaining) [2025-03-14 21:39:38,323 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 6 remaining) [2025-03-14 21:39:38,323 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 6 remaining) [2025-03-14 21:39:38,323 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-14 21:39:38,323 INFO L422 BasicCegarLoop]: Path program histogram: [1] [2025-03-14 21:39:38,324 WARN L336 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2025-03-14 21:39:38,324 INFO L581 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2025-03-14 21:39:38,366 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-03-14 21:39:38,377 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-14 21:39:38,378 INFO L333 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, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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;@1c6e21e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-14 21:39:38,378 INFO L334 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2025-03-14 21:39:38,410 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-14 21:39:38,410 INFO L124 PetriNetUnfolderBase]: 5/176 cut-off events. [2025-03-14 21:39:38,410 INFO L125 PetriNetUnfolderBase]: For 20/20 co-relation queries the response was YES. [2025-03-14 21:39:38,410 INFO L213 CegarLoopForPetriNet]: Found error trace [2025-03-14 21:39:38,410 INFO L221 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] [2025-03-14 21:39:38,410 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2025-03-14 21:39:38,411 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 21:39:38,411 INFO L85 PathProgramCache]: Analyzing trace with hash -64831365, now seen corresponding path program 1 times [2025-03-14 21:39:38,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 21:39:38,411 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [807293793] [2025-03-14 21:39:38,411 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-14 21:39:38,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 21:39:38,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 21:39:38,534 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-14 21:39:38,534 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 21:39:38,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [807293793] [2025-03-14 21:39:38,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [807293793] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-14 21:39:38,534 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-14 21:39:38,534 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-14 21:39:38,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1093571100] [2025-03-14 21:39:38,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-14 21:39:38,540 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-14 21:39:38,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 21:39:38,558 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-14 21:39:38,558 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-14 21:39:38,560 INFO L486 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 255 [2025-03-14 21:39:38,564 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 246 places, 255 transitions, 550 flow. Second operand has 3 states, 3 states have (on average 197.0) internal successors, (591), 3 states have internal predecessors, (591), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 21:39:38,564 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 21:39:38,564 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 255 [2025-03-14 21:39:38,566 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 21:40:18,964 INFO L124 PetriNetUnfolderBase]: 185496/376257 cut-off events. [2025-03-14 21:40:18,964 INFO L125 PetriNetUnfolderBase]: For 83865/83865 co-relation queries the response was YES. [2025-03-14 21:40:21,610 INFO L83 FinitePrefix]: Finished finitePrefix Result has 632966 conditions, 376257 events. 185496/376257 cut-off events. For 83865/83865 co-relation queries the response was YES. Maximal size of possible extension queue 11707. Compared 4956126 event pairs, 93770 based on Foata normal form. 82704/379493 useless extension candidates. Maximal degree in co-relation 76308. Up to 176938 conditions per place. [2025-03-14 21:40:24,432 INFO L140 encePairwiseOnDemand]: 234/255 looper letters, 72 selfloop transitions, 9 changer transitions 0/272 dead transitions. [2025-03-14 21:40:24,432 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 239 places, 272 transitions, 778 flow [2025-03-14 21:40:24,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-14 21:40:24,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-14 21:40:24,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 684 transitions. [2025-03-14 21:40:24,443 INFO L531 CegarLoopForPetriNet]: DFA transition density 0.8941176470588236 [2025-03-14 21:40:24,447 INFO L298 CegarLoopForPetriNet]: 246 programPoint places, -7 predicate places. [2025-03-14 21:40:24,447 INFO L471 AbstractCegarLoop]: Abstraction has has 239 places, 272 transitions, 778 flow [2025-03-14 21:40:24,447 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 197.0) internal successors, (591), 3 states have internal predecessors, (591), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 21:40:24,447 INFO L213 CegarLoopForPetriNet]: Found error trace [2025-03-14 21:40:24,447 INFO L221 CegarLoopForPetriNet]: trace histogram [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, 1, 1, 1, 1, 1, 1] [2025-03-14 21:40:24,448 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-14 21:40:24,448 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2025-03-14 21:40:24,449 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 21:40:24,449 INFO L85 PathProgramCache]: Analyzing trace with hash 1283952817, now seen corresponding path program 1 times [2025-03-14 21:40:24,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 21:40:24,450 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1480951937] [2025-03-14 21:40:24,450 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-14 21:40:24,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 21:40:24,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-14 21:40:24,470 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-03-14 21:40:24,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-14 21:40:24,486 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-03-14 21:40:24,486 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-03-14 21:40:24,486 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 7 remaining) [2025-03-14 21:40:24,486 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (5 of 7 remaining) [2025-03-14 21:40:24,486 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (4 of 7 remaining) [2025-03-14 21:40:24,486 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (3 of 7 remaining) [2025-03-14 21:40:24,486 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 7 remaining) [2025-03-14 21:40:24,486 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 7 remaining) [2025-03-14 21:40:24,486 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 7 remaining) [2025-03-14 21:40:24,486 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-03-14 21:40:24,486 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1] [2025-03-14 21:40:24,487 WARN L336 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2025-03-14 21:40:24,487 INFO L581 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2025-03-14 21:40:24,521 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-03-14 21:40:24,523 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-14 21:40:24,524 INFO L333 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, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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;@1c6e21e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-14 21:40:24,524 INFO L334 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2025-03-14 21:40:24,532 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-14 21:40:24,533 INFO L124 PetriNetUnfolderBase]: 5/178 cut-off events. [2025-03-14 21:40:24,533 INFO L125 PetriNetUnfolderBase]: For 20/20 co-relation queries the response was YES. [2025-03-14 21:40:24,533 INFO L213 CegarLoopForPetriNet]: Found error trace [2025-03-14 21:40:24,533 INFO L221 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] [2025-03-14 21:40:24,533 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2025-03-14 21:40:24,533 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 21:40:24,533 INFO L85 PathProgramCache]: Analyzing trace with hash -1099707183, now seen corresponding path program 1 times [2025-03-14 21:40:24,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 21:40:24,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1556815456] [2025-03-14 21:40:24,533 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-14 21:40:24,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 21:40:24,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 21:40:24,575 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-14 21:40:24,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 21:40:24,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1556815456] [2025-03-14 21:40:24,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1556815456] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-14 21:40:24,575 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-14 21:40:24,575 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-14 21:40:24,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39782854] [2025-03-14 21:40:24,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-14 21:40:24,575 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-14 21:40:24,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 21:40:24,576 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-14 21:40:24,576 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-14 21:40:24,577 INFO L486 CegarLoopForPetriNet]: Number of universal loopers: 227 out of 299 [2025-03-14 21:40:24,577 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 288 places, 299 transitions, 652 flow. Second operand has 3 states, 3 states have (on average 230.0) internal successors, (690), 3 states have internal predecessors, (690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 21:40:24,577 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 21:40:24,577 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 227 of 299 [2025-03-14 21:40:24,577 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand