/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx16000000000 -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 --cacsl2boogietranslator.check.absence.of.data.races.in.concurrent.programs true --cacsl2boogietranslator.check.unreachability.of.reach_error.function false -i ../../../trunk/examples/svcomp/pthread-ext/35_double_lock_p3_vs-pthread.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-wip.dk.empire-owicki-175f719-m [2023-11-30 00:34:41,435 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-30 00:34:41,502 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 [2023-11-30 00:34:41,536 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-30 00:34:41,537 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-30 00:34:41,538 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-30 00:34:41,538 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-30 00:34:41,539 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-30 00:34:41,539 INFO L153 SettingsManager]: * Use SBE=true [2023-11-30 00:34:41,543 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-30 00:34:41,543 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-30 00:34:41,544 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-30 00:34:41,544 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-30 00:34:41,545 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-30 00:34:41,545 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-30 00:34:41,545 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-30 00:34:41,545 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-30 00:34:41,546 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-30 00:34:41,546 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-30 00:34:41,546 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-30 00:34:41,546 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-30 00:34:41,547 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-30 00:34:41,547 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-30 00:34:41,547 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-11-30 00:34:41,547 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-30 00:34:41,547 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-30 00:34:41,548 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-30 00:34:41,548 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-30 00:34:41,548 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-30 00:34:41,548 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-30 00:34:41,549 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-30 00:34:41,549 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-30 00:34:41,549 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-30 00:34:41,549 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of data races in concurrent programs -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2023-11-30 00:34:41,755 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-30 00:34:41,782 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-30 00:34:41,784 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-30 00:34:41,785 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-30 00:34:41,786 INFO L274 PluginConnector]: CDTParser initialized [2023-11-30 00:34:41,786 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-ext/35_double_lock_p3_vs-pthread.i [2023-11-30 00:34:42,887 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-30 00:34:43,153 INFO L384 CDTParser]: Found 1 translation units. [2023-11-30 00:34:43,153 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/35_double_lock_p3_vs-pthread.i [2023-11-30 00:34:43,173 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a0fb6e656/c2de476c9f244719b6b543356934cd7d/FLAGe7521b202 [2023-11-30 00:34:43,189 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a0fb6e656/c2de476c9f244719b6b543356934cd7d [2023-11-30 00:34:43,191 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-30 00:34:43,193 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-11-30 00:34:43,196 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-30 00:34:43,196 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-30 00:34:43,200 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-30 00:34:43,201 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 12:34:43" (1/1) ... [2023-11-30 00:34:43,202 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7fe33fee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:34:43, skipping insertion in model container [2023-11-30 00:34:43,203 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 12:34:43" (1/1) ... [2023-11-30 00:34:43,245 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-30 00:34:43,520 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-30 00:34:43,533 INFO L202 MainTranslator]: Completed pre-run [2023-11-30 00:34:43,579 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-30 00:34:43,622 INFO L206 MainTranslator]: Completed translation [2023-11-30 00:34:43,623 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:34:43 WrapperNode [2023-11-30 00:34:43,623 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-30 00:34:43,625 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-30 00:34:43,625 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-30 00:34:43,625 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-30 00:34:43,630 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:34:43" (1/1) ... [2023-11-30 00:34:43,670 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:34:43" (1/1) ... [2023-11-30 00:34:43,688 INFO L138 Inliner]: procedures = 165, calls = 26, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 115 [2023-11-30 00:34:43,688 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-30 00:34:43,689 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-30 00:34:43,689 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-30 00:34:43,689 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-30 00:34:43,695 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:34:43" (1/1) ... [2023-11-30 00:34:43,695 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:34:43" (1/1) ... [2023-11-30 00:34:43,698 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:34:43" (1/1) ... [2023-11-30 00:34:43,698 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:34:43" (1/1) ... [2023-11-30 00:34:43,703 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:34:43" (1/1) ... [2023-11-30 00:34:43,706 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:34:43" (1/1) ... [2023-11-30 00:34:43,708 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:34:43" (1/1) ... [2023-11-30 00:34:43,709 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:34:43" (1/1) ... [2023-11-30 00:34:43,711 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-30 00:34:43,712 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-30 00:34:43,712 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-30 00:34:43,712 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-30 00:34:43,713 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:34:43" (1/1) ... [2023-11-30 00:34:43,717 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-30 00:34:43,728 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-30 00:34:43,746 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) [2023-11-30 00:34:43,748 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 [2023-11-30 00:34:43,769 INFO L130 BoogieDeclarations]: Found specification of procedure thr2 [2023-11-30 00:34:43,769 INFO L138 BoogieDeclarations]: Found implementation of procedure thr2 [2023-11-30 00:34:43,770 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2023-11-30 00:34:43,770 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2023-11-30 00:34:43,770 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-30 00:34:43,770 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-30 00:34:43,770 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-30 00:34:43,770 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-30 00:34:43,770 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-30 00:34:43,770 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-30 00:34:43,770 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2023-11-30 00:34:43,771 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-30 00:34:43,771 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-30 00:34:43,773 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-30 00:34:43,883 INFO L241 CfgBuilder]: Building ICFG [2023-11-30 00:34:43,884 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-30 00:34:44,035 INFO L282 CfgBuilder]: Performing block encoding [2023-11-30 00:34:44,058 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-30 00:34:44,059 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-30 00:34:44,060 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:34:44 BoogieIcfgContainer [2023-11-30 00:34:44,060 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-30 00:34:44,062 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-30 00:34:44,062 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-30 00:34:44,065 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-30 00:34:44,065 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.11 12:34:43" (1/3) ... [2023-11-30 00:34:44,066 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6190819a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 12:34:44, skipping insertion in model container [2023-11-30 00:34:44,066 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:34:43" (2/3) ... [2023-11-30 00:34:44,066 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6190819a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 12:34:44, skipping insertion in model container [2023-11-30 00:34:44,066 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:34:44" (3/3) ... [2023-11-30 00:34:44,067 INFO L112 eAbstractionObserver]: Analyzing ICFG 35_double_lock_p3_vs-pthread.i [2023-11-30 00:34:44,081 INFO L197 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-30 00:34:44,081 INFO L156 ceAbstractionStarter]: Applying trace abstraction to program that has 9 error locations. [2023-11-30 00:34:44,082 INFO L508 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-30 00:34:44,160 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-30 00:34:44,199 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 124 places, 124 transitions, 256 flow [2023-11-30 00:34:44,254 INFO L124 PetriNetUnfolderBase]: 7/134 cut-off events. [2023-11-30 00:34:44,254 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-30 00:34:44,269 INFO L83 FinitePrefix]: Finished finitePrefix Result has 141 conditions, 134 events. 7/134 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 181 event pairs, 0 based on Foata normal form. 0/116 useless extension candidates. Maximal degree in co-relation 115. Up to 4 conditions per place. [2023-11-30 00:34:44,269 INFO L82 GeneralOperation]: Start removeDead. Operand has 124 places, 124 transitions, 256 flow [2023-11-30 00:34:44,274 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 123 places, 123 transitions, 253 flow [2023-11-30 00:34:44,283 INFO L361 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-30 00:34:44,290 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;@6838bee5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-30 00:34:44,291 INFO L363 AbstractCegarLoop]: Starting to check reachability of 20 error locations. [2023-11-30 00:34:44,303 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-30 00:34:44,303 INFO L124 PetriNetUnfolderBase]: 2/41 cut-off events. [2023-11-30 00:34:44,303 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-30 00:34:44,303 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 00:34:44,304 INFO L232 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] [2023-11-30 00:34:44,307 INFO L425 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr2Err0ASSERT_VIOLATIONDATA_RACE, thr2Err1ASSERT_VIOLATIONDATA_RACE, thr2Err2ASSERT_VIOLATIONDATA_RACE, thr2Err3ASSERT_VIOLATIONDATA_RACE (and 16 more)] === [2023-11-30 00:34:44,313 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 00:34:44,313 INFO L85 PathProgramCache]: Analyzing trace with hash -1992433181, now seen corresponding path program 1 times [2023-11-30 00:34:44,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 00:34:44,322 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [121929038] [2023-11-30 00:34:44,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 00:34:44,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 00:34:44,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 00:34:44,586 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-30 00:34:44,587 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 00:34:44,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [121929038] [2023-11-30 00:34:44,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [121929038] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-30 00:34:44,588 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-30 00:34:44,588 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-30 00:34:44,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717883922] [2023-11-30 00:34:44,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-30 00:34:44,597 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-30 00:34:44,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 00:34:44,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-30 00:34:44,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-30 00:34:44,632 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 124 [2023-11-30 00:34:44,636 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 123 transitions, 253 flow. Second operand has 3 states, 3 states have (on average 83.33333333333333) internal successors, (250), 3 states have internal predecessors, (250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 00:34:44,636 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 00:34:44,636 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 124 [2023-11-30 00:34:44,637 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 00:34:44,920 INFO L124 PetriNetUnfolderBase]: 200/762 cut-off events. [2023-11-30 00:34:44,921 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-11-30 00:34:44,926 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1193 conditions, 762 events. 200/762 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 3722 event pairs, 53 based on Foata normal form. 360/1038 useless extension candidates. Maximal degree in co-relation 1165. Up to 256 conditions per place. [2023-11-30 00:34:44,930 INFO L140 encePairwiseOnDemand]: 103/124 looper letters, 42 selfloop transitions, 10 changer transitions 0/124 dead transitions. [2023-11-30 00:34:44,931 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 124 transitions, 362 flow [2023-11-30 00:34:44,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-30 00:34:44,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-30 00:34:44,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 315 transitions. [2023-11-30 00:34:44,947 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.8467741935483871 [2023-11-30 00:34:44,947 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 315 transitions. [2023-11-30 00:34:44,948 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 315 transitions. [2023-11-30 00:34:44,950 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 00:34:44,952 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 315 transitions. [2023-11-30 00:34:44,958 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 105.0) internal successors, (315), 3 states have internal predecessors, (315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 00:34:44,961 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 124.0) internal successors, (496), 4 states have internal predecessors, (496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 00:34:44,961 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 124.0) internal successors, (496), 4 states have internal predecessors, (496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 00:34:44,964 INFO L307 CegarLoopForPetriNet]: 123 programPoint places, -14 predicate places. [2023-11-30 00:34:44,965 INFO L500 AbstractCegarLoop]: Abstraction has has 109 places, 124 transitions, 362 flow [2023-11-30 00:34:44,965 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 83.33333333333333) internal successors, (250), 3 states have internal predecessors, (250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 00:34:44,965 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 00:34:44,965 INFO L232 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-30 00:34:44,966 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-30 00:34:44,966 INFO L425 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr2Err0ASSERT_VIOLATIONDATA_RACE, thr2Err1ASSERT_VIOLATIONDATA_RACE, thr2Err2ASSERT_VIOLATIONDATA_RACE, thr2Err3ASSERT_VIOLATIONDATA_RACE (and 16 more)] === [2023-11-30 00:34:44,967 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 00:34:44,967 INFO L85 PathProgramCache]: Analyzing trace with hash -1803775311, now seen corresponding path program 1 times [2023-11-30 00:34:44,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 00:34:44,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [845175811] [2023-11-30 00:34:44,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 00:34:44,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 00:34:45,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-30 00:34:45,014 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-30 00:34:45,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-30 00:34:45,053 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-30 00:34:45,053 INFO L372 BasicCegarLoop]: Counterexample is feasible [2023-11-30 00:34:45,054 INFO L810 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (19 of 20 remaining) [2023-11-30 00:34:45,057 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0ASSERT_VIOLATIONDATA_RACE (18 of 20 remaining) [2023-11-30 00:34:45,057 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1ASSERT_VIOLATIONDATA_RACE (17 of 20 remaining) [2023-11-30 00:34:45,057 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err2ASSERT_VIOLATIONDATA_RACE (16 of 20 remaining) [2023-11-30 00:34:45,058 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err3ASSERT_VIOLATIONDATA_RACE (15 of 20 remaining) [2023-11-30 00:34:45,058 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err4ASSERT_VIOLATIONDATA_RACE (14 of 20 remaining) [2023-11-30 00:34:45,058 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err5ASSERT_VIOLATIONDATA_RACE (13 of 20 remaining) [2023-11-30 00:34:45,058 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err6ASSERT_VIOLATIONDATA_RACE (12 of 20 remaining) [2023-11-30 00:34:45,058 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err7ASSERT_VIOLATIONDATA_RACE (11 of 20 remaining) [2023-11-30 00:34:45,059 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (10 of 20 remaining) [2023-11-30 00:34:45,059 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 20 remaining) [2023-11-30 00:34:45,059 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0ASSERT_VIOLATIONDATA_RACE (8 of 20 remaining) [2023-11-30 00:34:45,060 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1ASSERT_VIOLATIONDATA_RACE (7 of 20 remaining) [2023-11-30 00:34:45,060 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err2ASSERT_VIOLATIONDATA_RACE (6 of 20 remaining) [2023-11-30 00:34:45,061 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err3ASSERT_VIOLATIONDATA_RACE (5 of 20 remaining) [2023-11-30 00:34:45,061 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err4ASSERT_VIOLATIONDATA_RACE (4 of 20 remaining) [2023-11-30 00:34:45,061 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err5ASSERT_VIOLATIONDATA_RACE (3 of 20 remaining) [2023-11-30 00:34:45,061 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err6ASSERT_VIOLATIONDATA_RACE (2 of 20 remaining) [2023-11-30 00:34:45,062 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err7ASSERT_VIOLATIONDATA_RACE (1 of 20 remaining) [2023-11-30 00:34:45,062 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (0 of 20 remaining) [2023-11-30 00:34:45,062 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-30 00:34:45,063 INFO L457 BasicCegarLoop]: Path program histogram: [1, 1] [2023-11-30 00:34:45,067 WARN L227 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-30 00:34:45,068 INFO L508 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-11-30 00:34:45,119 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-30 00:34:45,131 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 210 places, 211 transitions, 442 flow [2023-11-30 00:34:45,162 INFO L124 PetriNetUnfolderBase]: 9/211 cut-off events. [2023-11-30 00:34:45,162 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-30 00:34:45,164 INFO L83 FinitePrefix]: Finished finitePrefix Result has 223 conditions, 211 events. 9/211 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 406 event pairs, 0 based on Foata normal form. 0/182 useless extension candidates. Maximal degree in co-relation 218. Up to 6 conditions per place. [2023-11-30 00:34:45,165 INFO L82 GeneralOperation]: Start removeDead. Operand has 210 places, 211 transitions, 442 flow [2023-11-30 00:34:45,168 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 188 places, 187 transitions, 387 flow [2023-11-30 00:34:45,170 INFO L361 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-30 00:34:45,174 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;@6838bee5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-30 00:34:45,174 INFO L363 AbstractCegarLoop]: Starting to check reachability of 29 error locations. [2023-11-30 00:34:45,180 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-30 00:34:45,180 INFO L124 PetriNetUnfolderBase]: 2/39 cut-off events. [2023-11-30 00:34:45,180 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-30 00:34:45,180 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 00:34:45,181 INFO L232 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] [2023-11-30 00:34:45,181 INFO L425 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr2Err0ASSERT_VIOLATIONDATA_RACE, thr2Err1ASSERT_VIOLATIONDATA_RACE, thr2Err2ASSERT_VIOLATIONDATA_RACE, thr2Err3ASSERT_VIOLATIONDATA_RACE (and 25 more)] === [2023-11-30 00:34:45,181 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 00:34:45,181 INFO L85 PathProgramCache]: Analyzing trace with hash -2045423796, now seen corresponding path program 1 times [2023-11-30 00:34:45,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 00:34:45,182 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1646826300] [2023-11-30 00:34:45,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 00:34:45,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 00:34:45,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 00:34:45,265 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-30 00:34:45,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 00:34:45,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1646826300] [2023-11-30 00:34:45,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1646826300] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-30 00:34:45,265 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-30 00:34:45,266 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-30 00:34:45,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [469277057] [2023-11-30 00:34:45,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-30 00:34:45,266 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-30 00:34:45,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 00:34:45,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-30 00:34:45,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-30 00:34:45,270 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 211 [2023-11-30 00:34:45,271 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 188 places, 187 transitions, 387 flow. Second operand has 3 states, 3 states have (on average 130.33333333333334) internal successors, (391), 3 states have internal predecessors, (391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 00:34:45,271 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 00:34:45,271 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 211 [2023-11-30 00:34:45,271 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 00:34:49,290 INFO L124 PetriNetUnfolderBase]: 14269/32851 cut-off events. [2023-11-30 00:34:49,291 INFO L125 PetriNetUnfolderBase]: For 632/632 co-relation queries the response was YES. [2023-11-30 00:34:49,381 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55781 conditions, 32851 events. 14269/32851 cut-off events. For 632/632 co-relation queries the response was YES. Maximal size of possible extension queue 639. Compared 326332 event pairs, 4799 based on Foata normal form. 13395/41514 useless extension candidates. Maximal degree in co-relation 55752. Up to 12660 conditions per place. [2023-11-30 00:34:49,578 INFO L140 encePairwiseOnDemand]: 170/211 looper letters, 92 selfloop transitions, 26 changer transitions 0/225 dead transitions. [2023-11-30 00:34:49,579 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 225 transitions, 707 flow [2023-11-30 00:34:49,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-30 00:34:49,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-30 00:34:49,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 526 transitions. [2023-11-30 00:34:49,581 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.8309636650868878 [2023-11-30 00:34:49,581 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 526 transitions. [2023-11-30 00:34:49,581 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 526 transitions. [2023-11-30 00:34:49,581 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 00:34:49,581 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 526 transitions. [2023-11-30 00:34:49,583 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 175.33333333333334) internal successors, (526), 3 states have internal predecessors, (526), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 00:34:49,585 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 211.0) internal successors, (844), 4 states have internal predecessors, (844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 00:34:49,585 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 211.0) internal successors, (844), 4 states have internal predecessors, (844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 00:34:49,586 INFO L307 CegarLoopForPetriNet]: 188 programPoint places, -10 predicate places. [2023-11-30 00:34:49,586 INFO L500 AbstractCegarLoop]: Abstraction has has 178 places, 225 transitions, 707 flow [2023-11-30 00:34:49,586 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 130.33333333333334) internal successors, (391), 3 states have internal predecessors, (391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 00:34:49,586 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 00:34:49,587 INFO L232 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, 1, 1, 1, 1] [2023-11-30 00:34:49,587 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-30 00:34:49,587 INFO L425 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr2Err0ASSERT_VIOLATIONDATA_RACE, thr2Err1ASSERT_VIOLATIONDATA_RACE, thr2Err2ASSERT_VIOLATIONDATA_RACE, thr2Err3ASSERT_VIOLATIONDATA_RACE (and 25 more)] === [2023-11-30 00:34:49,587 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 00:34:49,588 INFO L85 PathProgramCache]: Analyzing trace with hash 152249957, now seen corresponding path program 1 times [2023-11-30 00:34:49,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 00:34:49,588 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [760013424] [2023-11-30 00:34:49,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 00:34:49,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 00:34:49,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-30 00:34:49,612 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-30 00:34:49,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-30 00:34:49,628 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-30 00:34:49,628 INFO L372 BasicCegarLoop]: Counterexample is feasible [2023-11-30 00:34:49,628 INFO L810 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (28 of 29 remaining) [2023-11-30 00:34:49,629 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0ASSERT_VIOLATIONDATA_RACE (27 of 29 remaining) [2023-11-30 00:34:49,629 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1ASSERT_VIOLATIONDATA_RACE (26 of 29 remaining) [2023-11-30 00:34:49,629 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err2ASSERT_VIOLATIONDATA_RACE (25 of 29 remaining) [2023-11-30 00:34:49,629 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err3ASSERT_VIOLATIONDATA_RACE (24 of 29 remaining) [2023-11-30 00:34:49,629 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err4ASSERT_VIOLATIONDATA_RACE (23 of 29 remaining) [2023-11-30 00:34:49,630 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err5ASSERT_VIOLATIONDATA_RACE (22 of 29 remaining) [2023-11-30 00:34:49,630 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err6ASSERT_VIOLATIONDATA_RACE (21 of 29 remaining) [2023-11-30 00:34:49,630 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err7ASSERT_VIOLATIONDATA_RACE (20 of 29 remaining) [2023-11-30 00:34:49,630 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (19 of 29 remaining) [2023-11-30 00:34:49,630 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (18 of 29 remaining) [2023-11-30 00:34:49,630 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0ASSERT_VIOLATIONDATA_RACE (17 of 29 remaining) [2023-11-30 00:34:49,630 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1ASSERT_VIOLATIONDATA_RACE (16 of 29 remaining) [2023-11-30 00:34:49,631 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err2ASSERT_VIOLATIONDATA_RACE (15 of 29 remaining) [2023-11-30 00:34:49,631 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err3ASSERT_VIOLATIONDATA_RACE (14 of 29 remaining) [2023-11-30 00:34:49,631 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err4ASSERT_VIOLATIONDATA_RACE (13 of 29 remaining) [2023-11-30 00:34:49,631 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err5ASSERT_VIOLATIONDATA_RACE (12 of 29 remaining) [2023-11-30 00:34:49,631 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err6ASSERT_VIOLATIONDATA_RACE (11 of 29 remaining) [2023-11-30 00:34:49,631 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err7ASSERT_VIOLATIONDATA_RACE (10 of 29 remaining) [2023-11-30 00:34:49,632 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0ASSERT_VIOLATIONDATA_RACE (9 of 29 remaining) [2023-11-30 00:34:49,632 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1ASSERT_VIOLATIONDATA_RACE (8 of 29 remaining) [2023-11-30 00:34:49,632 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err2ASSERT_VIOLATIONDATA_RACE (7 of 29 remaining) [2023-11-30 00:34:49,632 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err3ASSERT_VIOLATIONDATA_RACE (6 of 29 remaining) [2023-11-30 00:34:49,632 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err4ASSERT_VIOLATIONDATA_RACE (5 of 29 remaining) [2023-11-30 00:34:49,632 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err5ASSERT_VIOLATIONDATA_RACE (4 of 29 remaining) [2023-11-30 00:34:49,633 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err6ASSERT_VIOLATIONDATA_RACE (3 of 29 remaining) [2023-11-30 00:34:49,633 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err7ASSERT_VIOLATIONDATA_RACE (2 of 29 remaining) [2023-11-30 00:34:49,633 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (1 of 29 remaining) [2023-11-30 00:34:49,633 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (0 of 29 remaining) [2023-11-30 00:34:49,633 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-30 00:34:49,633 INFO L457 BasicCegarLoop]: Path program histogram: [1, 1] [2023-11-30 00:34:49,634 WARN L227 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-30 00:34:49,634 INFO L508 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-11-30 00:34:49,676 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-30 00:34:49,679 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 296 places, 298 transitions, 632 flow [2023-11-30 00:34:49,713 INFO L124 PetriNetUnfolderBase]: 11/288 cut-off events. [2023-11-30 00:34:49,713 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-11-30 00:34:49,717 INFO L83 FinitePrefix]: Finished finitePrefix Result has 306 conditions, 288 events. 11/288 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 747 event pairs, 0 based on Foata normal form. 0/248 useless extension candidates. Maximal degree in co-relation 299. Up to 8 conditions per place. [2023-11-30 00:34:49,717 INFO L82 GeneralOperation]: Start removeDead. Operand has 296 places, 298 transitions, 632 flow [2023-11-30 00:34:49,719 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 253 places, 251 transitions, 523 flow [2023-11-30 00:34:49,720 INFO L361 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-30 00:34:49,721 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;@6838bee5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-30 00:34:49,721 INFO L363 AbstractCegarLoop]: Starting to check reachability of 38 error locations. [2023-11-30 00:34:49,724 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-30 00:34:49,724 INFO L124 PetriNetUnfolderBase]: 2/41 cut-off events. [2023-11-30 00:34:49,724 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-30 00:34:49,724 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 00:34:49,724 INFO L232 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] [2023-11-30 00:34:49,724 INFO L425 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr2Err0ASSERT_VIOLATIONDATA_RACE, thr2Err1ASSERT_VIOLATIONDATA_RACE, thr2Err2ASSERT_VIOLATIONDATA_RACE, thr2Err3ASSERT_VIOLATIONDATA_RACE (and 34 more)] === [2023-11-30 00:34:49,725 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 00:34:49,725 INFO L85 PathProgramCache]: Analyzing trace with hash -468327444, now seen corresponding path program 1 times [2023-11-30 00:34:49,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 00:34:49,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [480702525] [2023-11-30 00:34:49,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 00:34:49,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 00:34:49,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 00:34:49,766 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-30 00:34:49,766 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 00:34:49,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [480702525] [2023-11-30 00:34:49,766 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [480702525] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-30 00:34:49,766 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-30 00:34:49,766 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-30 00:34:49,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609775534] [2023-11-30 00:34:49,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-30 00:34:49,767 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-30 00:34:49,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 00:34:49,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-30 00:34:49,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-30 00:34:49,771 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 176 out of 298 [2023-11-30 00:34:49,772 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 253 places, 251 transitions, 523 flow. Second operand has 3 states, 3 states have (on average 177.33333333333334) internal successors, (532), 3 states have internal predecessors, (532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 00:34:49,772 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 00:34:49,772 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 176 of 298 [2023-11-30 00:34:49,772 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand