/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg true -i ../../../trunk/examples/svcomp/pthread-ext/04_incdec_cas.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-wip.dk.empire-owicki-a20a710-m [2023-12-09 14:51:33,193 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-09 14:51:33,277 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf [2023-12-09 14:51:33,307 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-09 14:51:33,308 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-09 14:51:33,308 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-09 14:51:33,309 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-09 14:51:33,309 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-09 14:51:33,310 INFO L153 SettingsManager]: * Use SBE=true [2023-12-09 14:51:33,313 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-09 14:51:33,313 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-09 14:51:33,314 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-09 14:51:33,314 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-09 14:51:33,315 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-09 14:51:33,315 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-09 14:51:33,315 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-09 14:51:33,316 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-09 14:51:33,316 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-09 14:51:33,316 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-09 14:51:33,316 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-09 14:51:33,317 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-09 14:51:33,318 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-09 14:51:33,318 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-09 14:51:33,318 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-12-09 14:51:33,318 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-09 14:51:33,319 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-09 14:51:33,319 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-09 14:51:33,319 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-09 14:51:33,319 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-09 14:51:33,320 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-09 14:51:33,320 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-09 14:51:33,321 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-09 14:51:33,321 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-09 14:51:33,321 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> true [2023-12-09 14:51:33,542 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-09 14:51:33,566 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-09 14:51:33,568 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-09 14:51:33,569 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-09 14:51:33,569 INFO L274 PluginConnector]: CDTParser initialized [2023-12-09 14:51:33,570 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-ext/04_incdec_cas.i [2023-12-09 14:51:34,757 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-09 14:51:35,023 INFO L384 CDTParser]: Found 1 translation units. [2023-12-09 14:51:35,024 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/04_incdec_cas.i [2023-12-09 14:51:35,042 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2658091c9/81760ac644ce46c98af8fef25b62cad2/FLAGbf7aafe18 [2023-12-09 14:51:35,055 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2658091c9/81760ac644ce46c98af8fef25b62cad2 [2023-12-09 14:51:35,057 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-09 14:51:35,058 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-09 14:51:35,059 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-09 14:51:35,059 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-09 14:51:35,063 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-09 14:51:35,064 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 02:51:35" (1/1) ... [2023-12-09 14:51:35,065 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@bdbbf28 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:51:35, skipping insertion in model container [2023-12-09 14:51:35,065 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 02:51:35" (1/1) ... [2023-12-09 14:51:35,107 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-09 14:51:35,378 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/04_incdec_cas.i[30369,30382] [2023-12-09 14:51:35,393 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/04_incdec_cas.i[30869,30882] [2023-12-09 14:51:35,403 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-09 14:51:35,413 INFO L202 MainTranslator]: Completed pre-run [2023-12-09 14:51:35,448 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/04_incdec_cas.i[30369,30382] [2023-12-09 14:51:35,451 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/04_incdec_cas.i[30869,30882] [2023-12-09 14:51:35,455 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-09 14:51:35,488 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-12-09 14:51:35,488 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-12-09 14:51:35,494 INFO L206 MainTranslator]: Completed translation [2023-12-09 14:51:35,495 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:51:35 WrapperNode [2023-12-09 14:51:35,495 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-09 14:51:35,496 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-09 14:51:35,496 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-09 14:51:35,496 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-09 14:51:35,501 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:51:35" (1/1) ... [2023-12-09 14:51:35,528 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:51:35" (1/1) ... [2023-12-09 14:51:35,555 INFO L138 Inliner]: procedures = 174, calls = 47, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 162 [2023-12-09 14:51:35,556 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-09 14:51:35,556 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-09 14:51:35,556 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-09 14:51:35,557 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-09 14:51:35,564 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:51:35" (1/1) ... [2023-12-09 14:51:35,564 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:51:35" (1/1) ... [2023-12-09 14:51:35,566 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:51:35" (1/1) ... [2023-12-09 14:51:35,566 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:51:35" (1/1) ... [2023-12-09 14:51:35,571 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:51:35" (1/1) ... [2023-12-09 14:51:35,581 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:51:35" (1/1) ... [2023-12-09 14:51:35,590 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:51:35" (1/1) ... [2023-12-09 14:51:35,592 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:51:35" (1/1) ... [2023-12-09 14:51:35,594 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-09 14:51:35,595 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-09 14:51:35,595 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-09 14:51:35,595 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-09 14:51:35,596 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:51:35" (1/1) ... [2023-12-09 14:51:35,600 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-09 14:51:35,616 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 14:51:35,638 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-09 14:51:35,665 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-09 14:51:35,672 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-12-09 14:51:35,672 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2023-12-09 14:51:35,672 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2023-12-09 14:51:35,673 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-12-09 14:51:35,673 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-12-09 14:51:35,673 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-09 14:51:35,673 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-09 14:51:35,673 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-09 14:51:35,673 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-09 14:51:35,674 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-12-09 14:51:35,674 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-09 14:51:35,674 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-09 14:51:35,675 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-12-09 14:51:35,815 INFO L241 CfgBuilder]: Building ICFG [2023-12-09 14:51:35,817 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-09 14:51:36,130 INFO L282 CfgBuilder]: Performing block encoding [2023-12-09 14:51:36,339 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-09 14:51:36,339 INFO L309 CfgBuilder]: Removed 3 assume(true) statements. [2023-12-09 14:51:36,340 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 02:51:36 BoogieIcfgContainer [2023-12-09 14:51:36,341 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-09 14:51:36,342 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-09 14:51:36,342 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-09 14:51:36,345 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-09 14:51:36,345 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 02:51:35" (1/3) ... [2023-12-09 14:51:36,346 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@393dcbc4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 02:51:36, skipping insertion in model container [2023-12-09 14:51:36,346 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:51:35" (2/3) ... [2023-12-09 14:51:36,346 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@393dcbc4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 02:51:36, skipping insertion in model container [2023-12-09 14:51:36,346 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 02:51:36" (3/3) ... [2023-12-09 14:51:36,347 INFO L112 eAbstractionObserver]: Analyzing ICFG 04_incdec_cas.i [2023-12-09 14:51:36,363 INFO L197 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-09 14:51:36,364 INFO L156 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-12-09 14:51:36,364 INFO L508 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-12-09 14:51:36,439 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-12-09 14:51:36,471 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 91 places, 96 transitions, 196 flow [2023-12-09 14:51:36,506 INFO L124 PetriNetUnfolderBase]: 9/107 cut-off events. [2023-12-09 14:51:36,506 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-12-09 14:51:36,512 INFO L83 FinitePrefix]: Finished finitePrefix Result has 111 conditions, 107 events. 9/107 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 221 event pairs, 0 based on Foata normal form. 0/94 useless extension candidates. Maximal degree in co-relation 76. Up to 4 conditions per place. [2023-12-09 14:51:36,512 INFO L82 GeneralOperation]: Start removeDead. Operand has 91 places, 96 transitions, 196 flow [2023-12-09 14:51:36,516 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 91 places, 96 transitions, 196 flow [2023-12-09 14:51:36,524 INFO L361 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-09 14:51:36,530 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;@19f57de8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-09 14:51:36,530 INFO L363 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2023-12-09 14:51:36,541 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-12-09 14:51:36,541 INFO L124 PetriNetUnfolderBase]: 2/51 cut-off events. [2023-12-09 14:51:36,541 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-12-09 14:51:36,541 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 14:51:36,542 INFO L233 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 14:51:36,542 INFO L425 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-12-09 14:51:36,547 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 14:51:36,547 INFO L85 PathProgramCache]: Analyzing trace with hash 1846277636, now seen corresponding path program 1 times [2023-12-09 14:51:36,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 14:51:36,555 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [711472446] [2023-12-09 14:51:36,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 14:51:36,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 14:51:36,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-09 14:51:36,651 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-12-09 14:51:36,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-09 14:51:36,689 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-12-09 14:51:36,691 INFO L372 BasicCegarLoop]: Counterexample is feasible [2023-12-09 14:51:36,691 INFO L810 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 5 remaining) [2023-12-09 14:51:36,693 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (3 of 5 remaining) [2023-12-09 14:51:36,693 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONERROR_FUNCTION (2 of 5 remaining) [2023-12-09 14:51:36,694 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 5 remaining) [2023-12-09 14:51:36,694 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONERROR_FUNCTION (0 of 5 remaining) [2023-12-09 14:51:36,694 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-09 14:51:36,695 INFO L457 BasicCegarLoop]: Path program histogram: [1] [2023-12-09 14:51:36,698 WARN L227 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-12-09 14:51:36,698 INFO L508 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-12-09 14:51:36,784 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-12-09 14:51:36,791 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 150 places, 160 transitions, 330 flow [2023-12-09 14:51:36,856 INFO L124 PetriNetUnfolderBase]: 17/184 cut-off events. [2023-12-09 14:51:36,856 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-12-09 14:51:36,859 INFO L83 FinitePrefix]: Finished finitePrefix Result has 192 conditions, 184 events. 17/184 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 598 event pairs, 0 based on Foata normal form. 0/160 useless extension candidates. Maximal degree in co-relation 139. Up to 6 conditions per place. [2023-12-09 14:51:36,859 INFO L82 GeneralOperation]: Start removeDead. Operand has 150 places, 160 transitions, 330 flow [2023-12-09 14:51:36,861 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 150 places, 160 transitions, 330 flow [2023-12-09 14:51:36,863 INFO L361 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-09 14:51:36,864 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;@19f57de8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-09 14:51:36,864 INFO L363 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2023-12-09 14:51:36,883 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-12-09 14:51:36,883 INFO L124 PetriNetUnfolderBase]: 3/79 cut-off events. [2023-12-09 14:51:36,883 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-12-09 14:51:36,883 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 14:51:36,884 INFO L233 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 14:51:36,884 INFO L425 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-12-09 14:51:36,885 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 14:51:36,885 INFO L85 PathProgramCache]: Analyzing trace with hash -1495345049, now seen corresponding path program 1 times [2023-12-09 14:51:36,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 14:51:36,886 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1567147690] [2023-12-09 14:51:36,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 14:51:36,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 14:51:36,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 14:51:37,038 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 14:51:37,038 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 14:51:37,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1567147690] [2023-12-09 14:51:37,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1567147690] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 14:51:37,039 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 14:51:37,040 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-09 14:51:37,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1726505666] [2023-12-09 14:51:37,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 14:51:37,047 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-09 14:51:37,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 14:51:37,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-09 14:51:37,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-09 14:51:37,080 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 136 out of 160 [2023-12-09 14:51:37,086 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 160 transitions, 330 flow. Second operand has 2 states, 2 states have (on average 137.5) internal successors, (275), 2 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:51:37,086 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 14:51:37,086 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 136 of 160 [2023-12-09 14:51:37,087 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 14:51:37,303 INFO L124 PetriNetUnfolderBase]: 122/783 cut-off events. [2023-12-09 14:51:37,304 INFO L125 PetriNetUnfolderBase]: For 37/37 co-relation queries the response was YES. [2023-12-09 14:51:37,312 INFO L83 FinitePrefix]: Finished finitePrefix Result has 978 conditions, 783 events. 122/783 cut-off events. For 37/37 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 5740 event pairs, 72 based on Foata normal form. 91/784 useless extension candidates. Maximal degree in co-relation 128. Up to 163 conditions per place. [2023-12-09 14:51:37,319 INFO L140 encePairwiseOnDemand]: 154/160 looper letters, 18 selfloop transitions, 0 changer transitions 0/149 dead transitions. [2023-12-09 14:51:37,320 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 149 transitions, 344 flow [2023-12-09 14:51:37,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-09 14:51:37,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-12-09 14:51:37,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 296 transitions. [2023-12-09 14:51:37,330 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.925 [2023-12-09 14:51:37,330 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 296 transitions. [2023-12-09 14:51:37,331 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 296 transitions. [2023-12-09 14:51:37,332 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 14:51:37,333 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 296 transitions. [2023-12-09 14:51:37,336 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 148.0) internal successors, (296), 2 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:51:37,339 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 160.0) internal successors, (480), 3 states have internal predecessors, (480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:51:37,340 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 160.0) internal successors, (480), 3 states have internal predecessors, (480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:51:37,343 INFO L308 CegarLoopForPetriNet]: 150 programPoint places, -5 predicate places. [2023-12-09 14:51:37,343 INFO L500 AbstractCegarLoop]: Abstraction has has 145 places, 149 transitions, 344 flow [2023-12-09 14:51:37,343 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 137.5) internal successors, (275), 2 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:51:37,343 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 14:51:37,343 INFO L233 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 14:51:37,344 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-09 14:51:37,344 INFO L425 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-12-09 14:51:37,345 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 14:51:37,345 INFO L85 PathProgramCache]: Analyzing trace with hash -1954131993, now seen corresponding path program 1 times [2023-12-09 14:51:37,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 14:51:37,345 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1130458342] [2023-12-09 14:51:37,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 14:51:37,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 14:51:37,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-09 14:51:37,376 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-12-09 14:51:37,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-09 14:51:37,396 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-12-09 14:51:37,396 INFO L372 BasicCegarLoop]: Counterexample is feasible [2023-12-09 14:51:37,397 INFO L810 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 7 remaining) [2023-12-09 14:51:37,397 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (5 of 7 remaining) [2023-12-09 14:51:37,397 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONERROR_FUNCTION (4 of 7 remaining) [2023-12-09 14:51:37,397 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (3 of 7 remaining) [2023-12-09 14:51:37,398 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONERROR_FUNCTION (2 of 7 remaining) [2023-12-09 14:51:37,398 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 7 remaining) [2023-12-09 14:51:37,398 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONERROR_FUNCTION (0 of 7 remaining) [2023-12-09 14:51:37,398 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-09 14:51:37,398 INFO L457 BasicCegarLoop]: Path program histogram: [1, 1] [2023-12-09 14:51:37,399 WARN L227 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-12-09 14:51:37,399 INFO L508 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-12-09 14:51:37,527 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-12-09 14:51:37,538 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 209 places, 224 transitions, 466 flow [2023-12-09 14:51:37,591 INFO L124 PetriNetUnfolderBase]: 25/261 cut-off events. [2023-12-09 14:51:37,592 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-12-09 14:51:37,595 INFO L83 FinitePrefix]: Finished finitePrefix Result has 274 conditions, 261 events. 25/261 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1004 event pairs, 0 based on Foata normal form. 0/226 useless extension candidates. Maximal degree in co-relation 202. Up to 8 conditions per place. [2023-12-09 14:51:37,595 INFO L82 GeneralOperation]: Start removeDead. Operand has 209 places, 224 transitions, 466 flow [2023-12-09 14:51:37,599 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 209 places, 224 transitions, 466 flow [2023-12-09 14:51:37,601 INFO L361 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-09 14:51:37,604 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;@19f57de8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-09 14:51:37,606 INFO L363 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2023-12-09 14:51:37,613 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-12-09 14:51:37,617 INFO L124 PetriNetUnfolderBase]: 3/85 cut-off events. [2023-12-09 14:51:37,617 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-12-09 14:51:37,617 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 14:51:37,617 INFO L233 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 14:51:37,618 INFO L425 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2023-12-09 14:51:37,618 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 14:51:37,618 INFO L85 PathProgramCache]: Analyzing trace with hash -818516344, now seen corresponding path program 1 times [2023-12-09 14:51:37,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 14:51:37,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1315060245] [2023-12-09 14:51:37,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 14:51:37,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 14:51:37,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 14:51:37,670 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 14:51:37,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 14:51:37,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1315060245] [2023-12-09 14:51:37,671 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1315060245] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 14:51:37,671 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 14:51:37,671 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-09 14:51:37,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214587006] [2023-12-09 14:51:37,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 14:51:37,671 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-09 14:51:37,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 14:51:37,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-09 14:51:37,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-09 14:51:37,673 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 189 out of 224 [2023-12-09 14:51:37,674 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 209 places, 224 transitions, 466 flow. Second operand has 2 states, 2 states have (on average 190.5) internal successors, (381), 2 states have internal predecessors, (381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:51:37,674 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 14:51:37,674 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 189 of 224 [2023-12-09 14:51:37,674 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 14:51:39,131 INFO L124 PetriNetUnfolderBase]: 1823/7659 cut-off events. [2023-12-09 14:51:39,131 INFO L125 PetriNetUnfolderBase]: For 757/757 co-relation queries the response was YES. [2023-12-09 14:51:39,163 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10204 conditions, 7659 events. 1823/7659 cut-off events. For 757/757 co-relation queries the response was YES. Maximal size of possible extension queue 396. Compared 89221 event pairs, 1368 based on Foata normal form. 820/7480 useless extension candidates. Maximal degree in co-relation 968. Up to 2188 conditions per place. [2023-12-09 14:51:39,213 INFO L140 encePairwiseOnDemand]: 216/224 looper letters, 27 selfloop transitions, 0 changer transitions 0/211 dead transitions. [2023-12-09 14:51:39,213 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 204 places, 211 transitions, 494 flow [2023-12-09 14:51:39,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-09 14:51:39,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-12-09 14:51:39,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 413 transitions. [2023-12-09 14:51:39,216 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.921875 [2023-12-09 14:51:39,216 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 413 transitions. [2023-12-09 14:51:39,216 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 413 transitions. [2023-12-09 14:51:39,217 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 14:51:39,217 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 413 transitions. [2023-12-09 14:51:39,219 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 206.5) internal successors, (413), 2 states have internal predecessors, (413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:51:39,220 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 224.0) internal successors, (672), 3 states have internal predecessors, (672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:51:39,221 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 224.0) internal successors, (672), 3 states have internal predecessors, (672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:51:39,221 INFO L308 CegarLoopForPetriNet]: 209 programPoint places, -5 predicate places. [2023-12-09 14:51:39,222 INFO L500 AbstractCegarLoop]: Abstraction has has 204 places, 211 transitions, 494 flow [2023-12-09 14:51:39,222 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 190.5) internal successors, (381), 2 states have internal predecessors, (381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:51:39,222 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 14:51:39,222 INFO L233 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 14:51:39,222 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-09 14:51:39,223 INFO L425 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2023-12-09 14:51:39,223 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 14:51:39,223 INFO L85 PathProgramCache]: Analyzing trace with hash 1319179348, now seen corresponding path program 1 times [2023-12-09 14:51:39,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 14:51:39,223 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1726286460] [2023-12-09 14:51:39,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 14:51:39,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 14:51:39,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 14:51:40,339 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 14:51:40,340 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 14:51:40,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1726286460] [2023-12-09 14:51:40,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1726286460] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 14:51:40,340 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 14:51:40,340 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-12-09 14:51:40,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87645721] [2023-12-09 14:51:40,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 14:51:40,342 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-09 14:51:40,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 14:51:40,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-09 14:51:40,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2023-12-09 14:51:40,347 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 224 [2023-12-09 14:51:40,349 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 204 places, 211 transitions, 494 flow. Second operand has 12 states, 12 states have (on average 135.33333333333334) internal successors, (1624), 12 states have internal predecessors, (1624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:51:40,349 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 14:51:40,349 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 224 [2023-12-09 14:51:40,349 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 14:51:53,179 INFO L124 PetriNetUnfolderBase]: 55213/110039 cut-off events. [2023-12-09 14:51:53,179 INFO L125 PetriNetUnfolderBase]: For 18459/18769 co-relation queries the response was YES. [2023-12-09 14:51:53,649 INFO L83 FinitePrefix]: Finished finitePrefix Result has 205018 conditions, 110039 events. 55213/110039 cut-off events. For 18459/18769 co-relation queries the response was YES. Maximal size of possible extension queue 5907. Compared 1351352 event pairs, 5669 based on Foata normal form. 0/99480 useless extension candidates. Maximal degree in co-relation 54712. Up to 33800 conditions per place. [2023-12-09 14:51:54,399 INFO L140 encePairwiseOnDemand]: 194/224 looper letters, 269 selfloop transitions, 96 changer transitions 0/496 dead transitions. [2023-12-09 14:51:54,400 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 218 places, 496 transitions, 2177 flow [2023-12-09 14:51:54,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-09 14:51:54,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-12-09 14:51:54,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 2364 transitions. [2023-12-09 14:51:54,406 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.7035714285714286 [2023-12-09 14:51:54,406 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 2364 transitions. [2023-12-09 14:51:54,406 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 2364 transitions. [2023-12-09 14:51:54,408 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 14:51:54,408 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 2364 transitions. [2023-12-09 14:51:54,414 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 157.6) internal successors, (2364), 15 states have internal predecessors, (2364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:51:54,422 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 224.0) internal successors, (3584), 16 states have internal predecessors, (3584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:51:54,424 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 224.0) internal successors, (3584), 16 states have internal predecessors, (3584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:51:54,426 INFO L308 CegarLoopForPetriNet]: 209 programPoint places, 9 predicate places. [2023-12-09 14:51:54,426 INFO L500 AbstractCegarLoop]: Abstraction has has 218 places, 496 transitions, 2177 flow [2023-12-09 14:51:54,427 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 135.33333333333334) internal successors, (1624), 12 states have internal predecessors, (1624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:51:54,428 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 14:51:54,428 INFO L233 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 14:51:54,428 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-09 14:51:54,428 INFO L425 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err1ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2023-12-09 14:51:54,428 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 14:51:54,429 INFO L85 PathProgramCache]: Analyzing trace with hash -322200425, now seen corresponding path program 1 times [2023-12-09 14:51:54,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 14:51:54,429 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1291876709] [2023-12-09 14:51:54,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 14:51:54,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 14:51:54,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 14:51:54,702 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 14:51:54,702 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 14:51:54,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1291876709] [2023-12-09 14:51:54,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1291876709] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 14:51:54,703 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 14:51:54,703 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-09 14:51:54,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624205566] [2023-12-09 14:51:54,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 14:51:54,704 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-09 14:51:54,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 14:51:54,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-09 14:51:54,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2023-12-09 14:51:54,707 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 141 out of 224 [2023-12-09 14:51:54,709 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 218 places, 496 transitions, 2177 flow. Second operand has 9 states, 9 states have (on average 143.77777777777777) internal successors, (1294), 9 states have internal predecessors, (1294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:51:54,709 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 14:51:54,709 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 141 of 224 [2023-12-09 14:51:54,709 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 14:52:09,956 INFO L124 PetriNetUnfolderBase]: 67525/134474 cut-off events. [2023-12-09 14:52:09,956 INFO L125 PetriNetUnfolderBase]: For 47528/80192 co-relation queries the response was YES. [2023-12-09 14:52:10,576 INFO L83 FinitePrefix]: Finished finitePrefix Result has 319738 conditions, 134474 events. 67525/134474 cut-off events. For 47528/80192 co-relation queries the response was YES. Maximal size of possible extension queue 7491. Compared 1690092 event pairs, 6884 based on Foata normal form. 1227/123024 useless extension candidates. Maximal degree in co-relation 71683. Up to 41172 conditions per place. [2023-12-09 14:52:11,600 INFO L140 encePairwiseOnDemand]: 199/224 looper letters, 313 selfloop transitions, 89 changer transitions 0/571 dead transitions. [2023-12-09 14:52:11,600 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 227 places, 571 transitions, 3357 flow [2023-12-09 14:52:11,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-09 14:52:11,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-12-09 14:52:11,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1636 transitions. [2023-12-09 14:52:11,607 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.7303571428571428 [2023-12-09 14:52:11,607 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1636 transitions. [2023-12-09 14:52:11,607 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1636 transitions. [2023-12-09 14:52:11,608 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 14:52:11,608 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1636 transitions. [2023-12-09 14:52:11,612 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 163.6) internal successors, (1636), 10 states have internal predecessors, (1636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:52:11,617 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 224.0) internal successors, (2464), 11 states have internal predecessors, (2464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:52:11,618 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 224.0) internal successors, (2464), 11 states have internal predecessors, (2464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:52:11,620 INFO L308 CegarLoopForPetriNet]: 209 programPoint places, 18 predicate places. [2023-12-09 14:52:11,620 INFO L500 AbstractCegarLoop]: Abstraction has has 227 places, 571 transitions, 3357 flow [2023-12-09 14:52:11,621 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 143.77777777777777) internal successors, (1294), 9 states have internal predecessors, (1294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:52:11,621 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 14:52:11,621 INFO L233 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 14:52:11,621 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-09 14:52:11,621 INFO L425 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2023-12-09 14:52:11,622 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 14:52:11,622 INFO L85 PathProgramCache]: Analyzing trace with hash 1189727971, now seen corresponding path program 1 times [2023-12-09 14:52:11,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 14:52:11,622 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1355107657] [2023-12-09 14:52:11,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 14:52:11,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 14:52:11,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-09 14:52:11,643 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-12-09 14:52:11,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-09 14:52:11,663 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-12-09 14:52:11,664 INFO L372 BasicCegarLoop]: Counterexample is feasible [2023-12-09 14:52:11,664 INFO L810 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 9 remaining) [2023-12-09 14:52:11,664 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (7 of 9 remaining) [2023-12-09 14:52:11,664 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONERROR_FUNCTION (6 of 9 remaining) [2023-12-09 14:52:11,668 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (5 of 9 remaining) [2023-12-09 14:52:11,668 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONERROR_FUNCTION (4 of 9 remaining) [2023-12-09 14:52:11,668 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (3 of 9 remaining) [2023-12-09 14:52:11,668 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONERROR_FUNCTION (2 of 9 remaining) [2023-12-09 14:52:11,668 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 9 remaining) [2023-12-09 14:52:11,668 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONERROR_FUNCTION (0 of 9 remaining) [2023-12-09 14:52:11,668 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-09 14:52:11,669 INFO L457 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2023-12-09 14:52:11,670 WARN L227 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2023-12-09 14:52:11,670 INFO L508 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2023-12-09 14:52:11,755 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-12-09 14:52:11,759 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 268 places, 288 transitions, 604 flow [2023-12-09 14:52:11,803 INFO L124 PetriNetUnfolderBase]: 33/338 cut-off events. [2023-12-09 14:52:11,803 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2023-12-09 14:52:11,808 INFO L83 FinitePrefix]: Finished finitePrefix Result has 357 conditions, 338 events. 33/338 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1407 event pairs, 0 based on Foata normal form. 0/292 useless extension candidates. Maximal degree in co-relation 269. Up to 10 conditions per place. [2023-12-09 14:52:11,808 INFO L82 GeneralOperation]: Start removeDead. Operand has 268 places, 288 transitions, 604 flow [2023-12-09 14:52:11,815 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 268 places, 288 transitions, 604 flow [2023-12-09 14:52:11,817 INFO L361 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-09 14:52:11,820 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;@19f57de8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-09 14:52:11,820 INFO L363 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2023-12-09 14:52:11,825 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-12-09 14:52:11,825 INFO L124 PetriNetUnfolderBase]: 3/83 cut-off events. [2023-12-09 14:52:11,825 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-12-09 14:52:11,825 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 14:52:11,825 INFO L233 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 14:52:11,826 INFO L425 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 8 more)] === [2023-12-09 14:52:11,826 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 14:52:11,826 INFO L85 PathProgramCache]: Analyzing trace with hash -70363736, now seen corresponding path program 1 times [2023-12-09 14:52:11,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 14:52:11,826 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [295397249] [2023-12-09 14:52:11,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 14:52:11,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 14:52:11,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 14:52:11,844 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 14:52:11,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 14:52:11,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [295397249] [2023-12-09 14:52:11,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [295397249] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 14:52:11,846 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 14:52:11,846 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-09 14:52:11,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665319857] [2023-12-09 14:52:11,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 14:52:11,846 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-09 14:52:11,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 14:52:11,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-09 14:52:11,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-09 14:52:11,851 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 242 out of 288 [2023-12-09 14:52:11,852 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 268 places, 288 transitions, 604 flow. Second operand has 2 states, 2 states have (on average 243.5) internal successors, (487), 2 states have internal predecessors, (487), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:52:11,852 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 14:52:11,852 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 242 of 288 [2023-12-09 14:52:11,852 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 14:52:21,295 INFO L124 PetriNetUnfolderBase]: 22964/75375 cut-off events. [2023-12-09 14:52:21,295 INFO L125 PetriNetUnfolderBase]: For 12178/12178 co-relation queries the response was YES. [2023-12-09 14:52:22,019 INFO L83 FinitePrefix]: Finished finitePrefix Result has 105623 conditions, 75375 events. 22964/75375 cut-off events. For 12178/12178 co-relation queries the response was YES. Maximal size of possible extension queue 3553. Compared 1140840 event pairs, 18864 based on Foata normal form. 7381/72118 useless extension candidates. Maximal degree in co-relation 10274. Up to 26245 conditions per place. [2023-12-09 14:52:22,443 INFO L140 encePairwiseOnDemand]: 278/288 looper letters, 36 selfloop transitions, 0 changer transitions 0/273 dead transitions. [2023-12-09 14:52:22,443 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 263 places, 273 transitions, 646 flow [2023-12-09 14:52:22,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-09 14:52:22,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-12-09 14:52:22,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 530 transitions. [2023-12-09 14:52:22,445 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.9201388888888888 [2023-12-09 14:52:22,445 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 530 transitions. [2023-12-09 14:52:22,445 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 530 transitions. [2023-12-09 14:52:22,446 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 14:52:22,446 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 530 transitions. [2023-12-09 14:52:22,447 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 265.0) internal successors, (530), 2 states have internal predecessors, (530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:52:22,448 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 288.0) internal successors, (864), 3 states have internal predecessors, (864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:52:22,448 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 288.0) internal successors, (864), 3 states have internal predecessors, (864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:52:22,449 INFO L308 CegarLoopForPetriNet]: 268 programPoint places, -5 predicate places. [2023-12-09 14:52:22,449 INFO L500 AbstractCegarLoop]: Abstraction has has 263 places, 273 transitions, 646 flow [2023-12-09 14:52:22,449 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 243.5) internal successors, (487), 2 states have internal predecessors, (487), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:52:22,450 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 14:52:22,450 INFO L233 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 14:52:22,450 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-09 14:52:22,450 INFO L425 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 8 more)] === [2023-12-09 14:52:22,450 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 14:52:22,450 INFO L85 PathProgramCache]: Analyzing trace with hash 891502356, now seen corresponding path program 1 times [2023-12-09 14:52:22,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 14:52:22,450 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1090001927] [2023-12-09 14:52:22,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 14:52:22,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 14:52:22,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 14:52:23,082 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 14:52:23,082 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 14:52:23,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1090001927] [2023-12-09 14:52:23,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1090001927] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 14:52:23,083 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 14:52:23,083 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-12-09 14:52:23,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1785790402] [2023-12-09 14:52:23,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 14:52:23,083 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-09 14:52:23,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 14:52:23,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-09 14:52:23,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2023-12-09 14:52:23,086 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 178 out of 288 [2023-12-09 14:52:23,089 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 263 places, 273 transitions, 646 flow. Second operand has 12 states, 12 states have (on average 180.33333333333334) internal successors, (2164), 12 states have internal predecessors, (2164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:52:23,089 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 14:52:23,089 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 178 of 288 [2023-12-09 14:52:23,089 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand