/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 -i ../../../trunk/examples/svcomp/pthread-ext/09_fmaxsym.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-wip.dk.empire-owicki-175f719-m [2023-11-29 19:16:12,991 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 19:16:13,063 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 [2023-11-29 19:16:13,091 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 19:16:13,092 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 19:16:13,092 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 19:16:13,093 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 19:16:13,093 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 19:16:13,093 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 19:16:13,093 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 19:16:13,093 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 19:16:13,094 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 19:16:13,094 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 19:16:13,094 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 19:16:13,094 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 19:16:13,095 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 19:16:13,095 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 19:16:13,095 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 19:16:13,095 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 19:16:13,095 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 19:16:13,096 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 19:16:13,098 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 19:16:13,099 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 19:16:13,099 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-11-29 19:16:13,101 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 19:16:13,101 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-29 19:16:13,102 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 19:16:13,102 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 19:16:13,102 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 19:16:13,103 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 19:16:13,103 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 19:16:13,103 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 19:16:13,103 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 19:16:13,104 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> true [2023-11-29 19:16:13,256 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 19:16:13,276 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 19:16:13,277 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 19:16:13,278 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 19:16:13,278 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 19:16:13,279 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-ext/09_fmaxsym.i [2023-11-29 19:16:14,281 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 19:16:14,503 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 19:16:14,503 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/09_fmaxsym.i [2023-11-29 19:16:14,516 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d495bfe2d/f16dc19c83ff4702baa8de01b99f8c4a/FLAG6ca9d2479 [2023-11-29 19:16:14,525 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d495bfe2d/f16dc19c83ff4702baa8de01b99f8c4a [2023-11-29 19:16:14,527 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 19:16:14,528 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-11-29 19:16:14,530 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 19:16:14,531 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 19:16:14,534 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 19:16:14,535 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 07:16:14" (1/1) ... [2023-11-29 19:16:14,535 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@21a68cac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:16:14, skipping insertion in model container [2023-11-29 19:16:14,536 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 07:16:14" (1/1) ... [2023-11-29 19:16:14,579 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 19:16:14,789 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/09_fmaxsym.i[30453,30466] [2023-11-29 19:16:14,797 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 19:16:14,807 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 19:16:14,832 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/09_fmaxsym.i[30453,30466] [2023-11-29 19:16:14,834 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 19:16:14,864 INFO L206 MainTranslator]: Completed translation [2023-11-29 19:16:14,864 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:16:14 WrapperNode [2023-11-29 19:16:14,865 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 19:16:14,865 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 19:16:14,865 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 19:16:14,866 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 19:16:14,870 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:16:14" (1/1) ... [2023-11-29 19:16:14,890 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:16:14" (1/1) ... [2023-11-29 19:16:14,910 INFO L138 Inliner]: procedures = 171, calls = 26, calls flagged for inlining = 10, calls inlined = 12, statements flattened = 91 [2023-11-29 19:16:14,911 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 19:16:14,911 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 19:16:14,911 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 19:16:14,911 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 19:16:14,916 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:16:14" (1/1) ... [2023-11-29 19:16:14,916 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:16:14" (1/1) ... [2023-11-29 19:16:14,920 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:16:14" (1/1) ... [2023-11-29 19:16:14,920 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:16:14" (1/1) ... [2023-11-29 19:16:14,934 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:16:14" (1/1) ... [2023-11-29 19:16:14,937 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:16:14" (1/1) ... [2023-11-29 19:16:14,941 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:16:14" (1/1) ... [2023-11-29 19:16:14,941 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:16:14" (1/1) ... [2023-11-29 19:16:14,943 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 19:16:14,943 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 19:16:14,943 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 19:16:14,944 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 19:16:14,944 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:16:14" (1/1) ... [2023-11-29 19:16:14,947 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-29 19:16:14,955 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-29 19:16:14,965 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) [2023-11-29 19:16:14,992 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 [2023-11-29 19:16:14,997 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-29 19:16:14,997 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2023-11-29 19:16:14,997 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2023-11-29 19:16:14,997 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-29 19:16:14,998 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 19:16:14,998 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-29 19:16:14,998 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-29 19:16:14,998 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-29 19:16:14,998 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 19:16:14,998 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 19:16:14,999 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-29 19:16:15,109 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 19:16:15,111 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 19:16:15,223 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 19:16:15,256 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 19:16:15,257 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-29 19:16:15,258 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 07:16:15 BoogieIcfgContainer [2023-11-29 19:16:15,258 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 19:16:15,268 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 19:16:15,268 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 19:16:15,270 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 19:16:15,270 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 07:16:14" (1/3) ... [2023-11-29 19:16:15,273 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f130ed2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 07:16:15, skipping insertion in model container [2023-11-29 19:16:15,273 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:16:14" (2/3) ... [2023-11-29 19:16:15,273 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f130ed2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 07:16:15, skipping insertion in model container [2023-11-29 19:16:15,273 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 07:16:15" (3/3) ... [2023-11-29 19:16:15,274 INFO L112 eAbstractionObserver]: Analyzing ICFG 09_fmaxsym.i [2023-11-29 19:16:15,286 INFO L197 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 19:16:15,287 INFO L156 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-29 19:16:15,287 INFO L508 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-29 19:16:15,335 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-29 19:16:15,373 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 75 places, 78 transitions, 160 flow [2023-11-29 19:16:15,410 INFO L124 PetriNetUnfolderBase]: 7/89 cut-off events. [2023-11-29 19:16:15,410 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-29 19:16:15,414 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93 conditions, 89 events. 7/89 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 78 event pairs, 0 based on Foata normal form. 0/79 useless extension candidates. Maximal degree in co-relation 57. Up to 4 conditions per place. [2023-11-29 19:16:15,414 INFO L82 GeneralOperation]: Start removeDead. Operand has 75 places, 78 transitions, 160 flow [2023-11-29 19:16:15,416 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 75 places, 78 transitions, 160 flow [2023-11-29 19:16:15,422 INFO L361 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 19:16:15,427 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;@2a4e3c42, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 19:16:15,427 INFO L363 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-11-29 19:16:15,435 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-29 19:16:15,436 INFO L124 PetriNetUnfolderBase]: 2/48 cut-off events. [2023-11-29 19:16:15,436 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-29 19:16:15,436 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 19:16:15,437 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] [2023-11-29 19:16:15,437 INFO L425 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 19:16:15,440 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 19:16:15,440 INFO L85 PathProgramCache]: Analyzing trace with hash -203866754, now seen corresponding path program 1 times [2023-11-29 19:16:15,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 19:16:15,447 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2026558203] [2023-11-29 19:16:15,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 19:16:15,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 19:16:15,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 19:16:15,562 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-29 19:16:15,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 19:16:15,610 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-29 19:16:15,611 INFO L372 BasicCegarLoop]: Counterexample is feasible [2023-11-29 19:16:15,612 INFO L810 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 3 remaining) [2023-11-29 19:16:15,613 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 3 remaining) [2023-11-29 19:16:15,613 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 3 remaining) [2023-11-29 19:16:15,614 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-29 19:16:15,614 INFO L457 BasicCegarLoop]: Path program histogram: [1] [2023-11-29 19:16:15,619 WARN L227 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-29 19:16:15,620 INFO L508 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-11-29 19:16:15,661 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-29 19:16:15,663 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 117 places, 123 transitions, 256 flow [2023-11-29 19:16:15,688 INFO L124 PetriNetUnfolderBase]: 13/147 cut-off events. [2023-11-29 19:16:15,688 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-29 19:16:15,689 INFO L83 FinitePrefix]: Finished finitePrefix Result has 155 conditions, 147 events. 13/147 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 244 event pairs, 0 based on Foata normal form. 0/129 useless extension candidates. Maximal degree in co-relation 101. Up to 6 conditions per place. [2023-11-29 19:16:15,689 INFO L82 GeneralOperation]: Start removeDead. Operand has 117 places, 123 transitions, 256 flow [2023-11-29 19:16:15,691 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 117 places, 123 transitions, 256 flow [2023-11-29 19:16:15,691 INFO L361 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 19:16:15,692 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;@2a4e3c42, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 19:16:15,692 INFO L363 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-11-29 19:16:15,708 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-29 19:16:15,708 INFO L124 PetriNetUnfolderBase]: 4/80 cut-off events. [2023-11-29 19:16:15,708 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-29 19:16:15,708 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 19:16:15,708 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] [2023-11-29 19:16:15,708 INFO L425 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-11-29 19:16:15,709 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 19:16:15,709 INFO L85 PathProgramCache]: Analyzing trace with hash 1652161369, now seen corresponding path program 1 times [2023-11-29 19:16:15,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 19:16:15,709 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1736199811] [2023-11-29 19:16:15,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 19:16:15,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 19:16:15,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 19:16:15,731 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-29 19:16:15,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 19:16:15,759 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-29 19:16:15,759 INFO L372 BasicCegarLoop]: Counterexample is feasible [2023-11-29 19:16:15,759 INFO L810 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 4 remaining) [2023-11-29 19:16:15,760 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 4 remaining) [2023-11-29 19:16:15,760 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 4 remaining) [2023-11-29 19:16:15,760 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 4 remaining) [2023-11-29 19:16:15,760 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-29 19:16:15,760 INFO L457 BasicCegarLoop]: Path program histogram: [1] [2023-11-29 19:16:15,761 WARN L227 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-29 19:16:15,761 INFO L508 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-11-29 19:16:15,800 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-29 19:16:15,803 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 159 places, 168 transitions, 354 flow [2023-11-29 19:16:15,828 INFO L124 PetriNetUnfolderBase]: 19/205 cut-off events. [2023-11-29 19:16:15,828 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-11-29 19:16:15,830 INFO L83 FinitePrefix]: Finished finitePrefix Result has 218 conditions, 205 events. 19/205 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 494 event pairs, 0 based on Foata normal form. 0/179 useless extension candidates. Maximal degree in co-relation 151. Up to 8 conditions per place. [2023-11-29 19:16:15,830 INFO L82 GeneralOperation]: Start removeDead. Operand has 159 places, 168 transitions, 354 flow [2023-11-29 19:16:15,832 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 159 places, 168 transitions, 354 flow [2023-11-29 19:16:15,833 INFO L361 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 19:16:15,833 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;@2a4e3c42, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 19:16:15,833 INFO L363 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2023-11-29 19:16:15,846 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-29 19:16:15,846 INFO L124 PetriNetUnfolderBase]: 7/121 cut-off events. [2023-11-29 19:16:15,846 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-11-29 19:16:15,847 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 19:16:15,847 INFO L232 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 19:16:15,847 INFO L425 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-11-29 19:16:15,847 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 19:16:15,847 INFO L85 PathProgramCache]: Analyzing trace with hash 1658926688, now seen corresponding path program 1 times [2023-11-29 19:16:15,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 19:16:15,848 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1213519355] [2023-11-29 19:16:15,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 19:16:15,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 19:16:15,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 19:16:15,864 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-29 19:16:15,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 19:16:15,893 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-29 19:16:15,893 INFO L372 BasicCegarLoop]: Counterexample is feasible [2023-11-29 19:16:15,893 INFO L810 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 5 remaining) [2023-11-29 19:16:15,894 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (3 of 5 remaining) [2023-11-29 19:16:15,894 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 5 remaining) [2023-11-29 19:16:15,894 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 5 remaining) [2023-11-29 19:16:15,894 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 5 remaining) [2023-11-29 19:16:15,894 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-29 19:16:15,894 INFO L457 BasicCegarLoop]: Path program histogram: [1] [2023-11-29 19:16:15,895 WARN L227 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-29 19:16:15,895 INFO L508 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2023-11-29 19:16:15,936 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-29 19:16:15,940 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 201 places, 213 transitions, 454 flow [2023-11-29 19:16:15,997 INFO L124 PetriNetUnfolderBase]: 25/263 cut-off events. [2023-11-29 19:16:15,997 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2023-11-29 19:16:16,001 INFO L83 FinitePrefix]: Finished finitePrefix Result has 282 conditions, 263 events. 25/263 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 742 event pairs, 0 based on Foata normal form. 0/229 useless extension candidates. Maximal degree in co-relation 213. Up to 10 conditions per place. [2023-11-29 19:16:16,001 INFO L82 GeneralOperation]: Start removeDead. Operand has 201 places, 213 transitions, 454 flow [2023-11-29 19:16:16,005 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 201 places, 213 transitions, 454 flow [2023-11-29 19:16:16,006 INFO L361 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 19:16:16,008 INFO L362 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@2a4e3c42, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 19:16:16,010 INFO L363 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2023-11-29 19:16:16,037 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-29 19:16:16,037 INFO L124 PetriNetUnfolderBase]: 11/162 cut-off events. [2023-11-29 19:16:16,038 INFO L125 PetriNetUnfolderBase]: For 10/10 co-relation queries the response was YES. [2023-11-29 19:16:16,038 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 19:16:16,038 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 19:16:16,038 INFO L425 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-11-29 19:16:16,039 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 19:16:16,039 INFO L85 PathProgramCache]: Analyzing trace with hash 1945418216, now seen corresponding path program 1 times [2023-11-29 19:16:16,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 19:16:16,039 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1812328949] [2023-11-29 19:16:16,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 19:16:16,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 19:16:16,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 19:16:16,147 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 19:16:16,147 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 19:16:16,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1812328949] [2023-11-29 19:16:16,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1812328949] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 19:16:16,148 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 19:16:16,148 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 19:16:16,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2029605156] [2023-11-29 19:16:16,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 19:16:16,157 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 19:16:16,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 19:16:16,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 19:16:16,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 19:16:16,185 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 150 out of 213 [2023-11-29 19:16:16,187 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 213 transitions, 454 flow. Second operand has 3 states, 3 states have (on average 153.33333333333334) internal successors, (460), 3 states have internal predecessors, (460), 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) [2023-11-29 19:16:16,187 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 19:16:16,187 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 150 of 213 [2023-11-29 19:16:16,188 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 19:16:25,735 INFO L124 PetriNetUnfolderBase]: 51166/90620 cut-off events. [2023-11-29 19:16:25,736 INFO L125 PetriNetUnfolderBase]: For 15637/15637 co-relation queries the response was YES. [2023-11-29 19:16:26,135 INFO L83 FinitePrefix]: Finished finitePrefix Result has 164409 conditions, 90620 events. 51166/90620 cut-off events. For 15637/15637 co-relation queries the response was YES. Maximal size of possible extension queue 3142. Compared 883416 event pairs, 23384 based on Foata normal form. 33654/106175 useless extension candidates. Maximal degree in co-relation 80274. Up to 47916 conditions per place. [2023-11-29 19:16:26,894 INFO L140 encePairwiseOnDemand]: 190/213 looper letters, 73 selfloop transitions, 8 changer transitions 0/226 dead transitions. [2023-11-29 19:16:26,894 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 226 transitions, 663 flow [2023-11-29 19:16:26,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 19:16:26,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 19:16:26,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 558 transitions. [2023-11-29 19:16:26,909 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.8732394366197183 [2023-11-29 19:16:26,909 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 558 transitions. [2023-11-29 19:16:26,909 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 558 transitions. [2023-11-29 19:16:26,912 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 19:16:26,913 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 558 transitions. [2023-11-29 19:16:26,918 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 186.0) internal successors, (558), 3 states have internal predecessors, (558), 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) [2023-11-29 19:16:26,922 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 213.0) internal successors, (852), 4 states have internal predecessors, (852), 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) [2023-11-29 19:16:26,922 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 213.0) internal successors, (852), 4 states have internal predecessors, (852), 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) [2023-11-29 19:16:26,925 INFO L307 CegarLoopForPetriNet]: 201 programPoint places, -8 predicate places. [2023-11-29 19:16:26,925 INFO L500 AbstractCegarLoop]: Abstraction has has 193 places, 226 transitions, 663 flow [2023-11-29 19:16:26,925 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 153.33333333333334) internal successors, (460), 3 states have internal predecessors, (460), 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) [2023-11-29 19:16:26,925 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 19:16:26,925 INFO L232 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 19:16:26,926 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-29 19:16:26,926 INFO L425 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-11-29 19:16:26,926 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 19:16:26,926 INFO L85 PathProgramCache]: Analyzing trace with hash 1351410672, now seen corresponding path program 1 times [2023-11-29 19:16:26,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 19:16:26,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1320629704] [2023-11-29 19:16:26,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 19:16:26,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 19:16:26,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 19:16:26,957 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-29 19:16:26,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 19:16:26,980 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-29 19:16:26,980 INFO L372 BasicCegarLoop]: Counterexample is feasible [2023-11-29 19:16:26,980 INFO L810 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 6 remaining) [2023-11-29 19:16:26,981 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (4 of 6 remaining) [2023-11-29 19:16:26,981 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (3 of 6 remaining) [2023-11-29 19:16:26,981 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 6 remaining) [2023-11-29 19:16:26,981 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 6 remaining) [2023-11-29 19:16:26,981 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 6 remaining) [2023-11-29 19:16:26,981 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-29 19:16:26,981 INFO L457 BasicCegarLoop]: Path program histogram: [1, 1] [2023-11-29 19:16:26,982 WARN L227 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-29 19:16:26,982 INFO L508 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2023-11-29 19:16:27,022 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-29 19:16:27,029 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 243 places, 258 transitions, 556 flow [2023-11-29 19:16:27,061 INFO L124 PetriNetUnfolderBase]: 31/321 cut-off events. [2023-11-29 19:16:27,061 INFO L125 PetriNetUnfolderBase]: For 30/30 co-relation queries the response was YES. [2023-11-29 19:16:27,063 INFO L83 FinitePrefix]: Finished finitePrefix Result has 347 conditions, 321 events. 31/321 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 993 event pairs, 0 based on Foata normal form. 0/279 useless extension candidates. Maximal degree in co-relation 276. Up to 12 conditions per place. [2023-11-29 19:16:27,063 INFO L82 GeneralOperation]: Start removeDead. Operand has 243 places, 258 transitions, 556 flow [2023-11-29 19:16:27,066 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 243 places, 258 transitions, 556 flow [2023-11-29 19:16:27,068 INFO L361 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 19:16:27,072 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;@2a4e3c42, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 19:16:27,073 INFO L363 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2023-11-29 19:16:27,081 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-29 19:16:27,081 INFO L124 PetriNetUnfolderBase]: 11/163 cut-off events. [2023-11-29 19:16:27,081 INFO L125 PetriNetUnfolderBase]: For 10/10 co-relation queries the response was YES. [2023-11-29 19:16:27,081 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 19:16:27,081 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 19:16:27,082 INFO L425 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-11-29 19:16:27,082 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 19:16:27,082 INFO L85 PathProgramCache]: Analyzing trace with hash 1161459794, now seen corresponding path program 1 times [2023-11-29 19:16:27,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 19:16:27,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1623985831] [2023-11-29 19:16:27,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 19:16:27,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 19:16:27,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 19:16:27,134 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 19:16:27,134 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 19:16:27,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1623985831] [2023-11-29 19:16:27,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1623985831] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 19:16:27,134 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 19:16:27,134 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 19:16:27,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143911601] [2023-11-29 19:16:27,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 19:16:27,135 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 19:16:27,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 19:16:27,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 19:16:27,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 19:16:27,137 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 181 out of 258 [2023-11-29 19:16:27,138 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 243 places, 258 transitions, 556 flow. Second operand has 3 states, 3 states have (on average 184.33333333333334) internal successors, (553), 3 states have internal predecessors, (553), 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) [2023-11-29 19:16:27,138 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 19:16:27,138 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 181 of 258 [2023-11-29 19:16:27,138 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand