/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/weaver/parallel-ticket-2.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-wip.dk.empire-owicki-a20a710-m [2023-12-09 15:19:43,565 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-09 15:19:43,625 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 15:19:43,654 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-09 15:19:43,655 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-09 15:19:43,656 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-09 15:19:43,656 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-09 15:19:43,656 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-09 15:19:43,657 INFO L153 SettingsManager]: * Use SBE=true [2023-12-09 15:19:43,661 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-09 15:19:43,661 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-09 15:19:43,661 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-09 15:19:43,662 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-09 15:19:43,663 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-09 15:19:43,663 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-09 15:19:43,663 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-09 15:19:43,663 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-09 15:19:43,663 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-09 15:19:43,663 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-09 15:19:43,664 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-09 15:19:43,664 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-09 15:19:43,664 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-09 15:19:43,664 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-09 15:19:43,665 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-12-09 15:19:43,665 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-09 15:19:43,665 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-09 15:19:43,665 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-09 15:19:43,665 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-09 15:19:43,665 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-09 15:19:43,665 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-09 15:19:43,666 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-09 15:19:43,666 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-09 15:19:43,666 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-09 15:19:43,667 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> true [2023-12-09 15:19:43,852 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-09 15:19:43,879 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-09 15:19:43,881 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-09 15:19:43,881 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-09 15:19:43,882 INFO L274 PluginConnector]: CDTParser initialized [2023-12-09 15:19:43,882 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/parallel-ticket-2.wvr.c [2023-12-09 15:19:44,990 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-09 15:19:45,129 INFO L384 CDTParser]: Found 1 translation units. [2023-12-09 15:19:45,129 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-ticket-2.wvr.c [2023-12-09 15:19:45,134 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cdf8b304d/9140f595b5c143b6b316a9e527f1f6e6/FLAG99343fe5a [2023-12-09 15:19:45,143 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cdf8b304d/9140f595b5c143b6b316a9e527f1f6e6 [2023-12-09 15:19:45,145 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-09 15:19:45,145 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-09 15:19:45,146 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-09 15:19:45,146 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-09 15:19:45,149 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-09 15:19:45,150 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 03:19:45" (1/1) ... [2023-12-09 15:19:45,150 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@292d6d72 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:19:45, skipping insertion in model container [2023-12-09 15:19:45,150 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 03:19:45" (1/1) ... [2023-12-09 15:19:45,167 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-09 15:19:45,266 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-ticket-2.wvr.c[2678,2691] [2023-12-09 15:19:45,269 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-09 15:19:45,275 INFO L202 MainTranslator]: Completed pre-run [2023-12-09 15:19:45,289 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-ticket-2.wvr.c[2678,2691] [2023-12-09 15:19:45,289 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-09 15:19:45,294 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-12-09 15:19:45,294 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-12-09 15:19:45,299 INFO L206 MainTranslator]: Completed translation [2023-12-09 15:19:45,300 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:19:45 WrapperNode [2023-12-09 15:19:45,300 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-09 15:19:45,301 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-09 15:19:45,301 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-09 15:19:45,301 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-09 15:19:45,306 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:19:45" (1/1) ... [2023-12-09 15:19:45,310 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:19:45" (1/1) ... [2023-12-09 15:19:45,330 INFO L138 Inliner]: procedures = 21, calls = 40, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 125 [2023-12-09 15:19:45,331 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-09 15:19:45,331 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-09 15:19:45,331 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-09 15:19:45,331 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-09 15:19:45,337 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:19:45" (1/1) ... [2023-12-09 15:19:45,337 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:19:45" (1/1) ... [2023-12-09 15:19:45,339 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:19:45" (1/1) ... [2023-12-09 15:19:45,339 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:19:45" (1/1) ... [2023-12-09 15:19:45,342 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:19:45" (1/1) ... [2023-12-09 15:19:45,343 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:19:45" (1/1) ... [2023-12-09 15:19:45,344 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:19:45" (1/1) ... [2023-12-09 15:19:45,344 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:19:45" (1/1) ... [2023-12-09 15:19:45,346 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-09 15:19:45,346 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-09 15:19:45,347 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-09 15:19:45,347 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-09 15:19:45,347 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:19:45" (1/1) ... [2023-12-09 15:19:45,351 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-09 15:19:45,359 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 15:19:45,369 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 15:19:45,372 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 15:19:45,392 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-09 15:19:45,392 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-12-09 15:19:45,392 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-12-09 15:19:45,392 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-12-09 15:19:45,392 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-12-09 15:19:45,392 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-09 15:19:45,393 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-09 15:19:45,393 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-12-09 15:19:45,393 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-12-09 15:19:45,393 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-12-09 15:19:45,393 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-09 15:19:45,393 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-09 15:19:45,393 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-12-09 15:19:45,393 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-09 15:19:45,394 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 15:19:45,530 INFO L241 CfgBuilder]: Building ICFG [2023-12-09 15:19:45,532 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-09 15:19:45,752 INFO L282 CfgBuilder]: Performing block encoding [2023-12-09 15:19:45,817 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-09 15:19:45,817 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-12-09 15:19:45,818 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 03:19:45 BoogieIcfgContainer [2023-12-09 15:19:45,819 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-09 15:19:45,821 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-09 15:19:45,822 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-09 15:19:45,824 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-09 15:19:45,824 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 03:19:45" (1/3) ... [2023-12-09 15:19:45,825 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4eef92a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 03:19:45, skipping insertion in model container [2023-12-09 15:19:45,825 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:19:45" (2/3) ... [2023-12-09 15:19:45,825 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4eef92a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 03:19:45, skipping insertion in model container [2023-12-09 15:19:45,825 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 03:19:45" (3/3) ... [2023-12-09 15:19:45,826 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-ticket-2.wvr.c [2023-12-09 15:19:45,839 INFO L197 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-09 15:19:45,839 INFO L156 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-09 15:19:45,840 INFO L508 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-12-09 15:19:45,903 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-12-09 15:19:45,941 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 105 places, 100 transitions, 214 flow [2023-12-09 15:19:46,005 INFO L124 PetriNetUnfolderBase]: 2/98 cut-off events. [2023-12-09 15:19:46,006 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-12-09 15:19:46,010 INFO L83 FinitePrefix]: Finished finitePrefix Result has 107 conditions, 98 events. 2/98 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 33 event pairs, 0 based on Foata normal form. 0/95 useless extension candidates. Maximal degree in co-relation 66. Up to 2 conditions per place. [2023-12-09 15:19:46,011 INFO L82 GeneralOperation]: Start removeDead. Operand has 105 places, 100 transitions, 214 flow [2023-12-09 15:19:46,015 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 94 places, 89 transitions, 190 flow [2023-12-09 15:19:46,030 INFO L361 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-09 15:19:46,037 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;@ad6c0f1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-09 15:19:46,038 INFO L363 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-12-09 15:19:46,087 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-12-09 15:19:46,087 INFO L124 PetriNetUnfolderBase]: 2/88 cut-off events. [2023-12-09 15:19:46,087 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-12-09 15:19:46,088 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:19:46,088 INFO L233 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:19:46,089 INFO L425 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 15:19:46,092 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:19:46,093 INFO L85 PathProgramCache]: Analyzing trace with hash 1457779464, now seen corresponding path program 1 times [2023-12-09 15:19:46,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:19:46,101 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1352676781] [2023-12-09 15:19:46,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:19:46,101 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:19:46,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:19:46,760 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 15:19:46,761 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:19:46,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1352676781] [2023-12-09 15:19:46,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1352676781] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 15:19:46,762 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 15:19:46,762 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-09 15:19:46,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191086429] [2023-12-09 15:19:46,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 15:19:46,769 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-09 15:19:46,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:19:46,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-09 15:19:46,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-12-09 15:19:46,797 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 100 [2023-12-09 15:19:46,800 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 89 transitions, 190 flow. Second operand has 8 states, 8 states have (on average 69.625) internal successors, (557), 8 states have internal predecessors, (557), 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 15:19:46,800 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:19:46,801 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 100 [2023-12-09 15:19:46,801 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:19:46,998 INFO L124 PetriNetUnfolderBase]: 31/191 cut-off events. [2023-12-09 15:19:46,998 INFO L125 PetriNetUnfolderBase]: For 34/34 co-relation queries the response was YES. [2023-12-09 15:19:46,999 INFO L83 FinitePrefix]: Finished finitePrefix Result has 322 conditions, 191 events. 31/191 cut-off events. For 34/34 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 497 event pairs, 15 based on Foata normal form. 3/188 useless extension candidates. Maximal degree in co-relation 182. Up to 50 conditions per place. [2023-12-09 15:19:47,001 INFO L140 encePairwiseOnDemand]: 85/100 looper letters, 26 selfloop transitions, 6 changer transitions 16/104 dead transitions. [2023-12-09 15:19:47,001 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 104 transitions, 325 flow [2023-12-09 15:19:47,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-09 15:19:47,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-12-09 15:19:47,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 778 transitions. [2023-12-09 15:19:47,018 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.7072727272727273 [2023-12-09 15:19:47,019 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 778 transitions. [2023-12-09 15:19:47,019 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 778 transitions. [2023-12-09 15:19:47,021 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:19:47,023 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 778 transitions. [2023-12-09 15:19:47,028 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 70.72727272727273) internal successors, (778), 11 states have internal predecessors, (778), 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 15:19:47,032 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 100.0) internal successors, (1200), 12 states have internal predecessors, (1200), 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 15:19:47,033 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 100.0) internal successors, (1200), 12 states have internal predecessors, (1200), 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 15:19:47,036 INFO L308 CegarLoopForPetriNet]: 94 programPoint places, 10 predicate places. [2023-12-09 15:19:47,036 INFO L500 AbstractCegarLoop]: Abstraction has has 104 places, 104 transitions, 325 flow [2023-12-09 15:19:47,037 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 69.625) internal successors, (557), 8 states have internal predecessors, (557), 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 15:19:47,037 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:19:47,037 INFO L233 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:19:47,037 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-09 15:19:47,037 INFO L425 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 15:19:47,038 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:19:47,038 INFO L85 PathProgramCache]: Analyzing trace with hash 2026536272, now seen corresponding path program 2 times [2023-12-09 15:19:47,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:19:47,038 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1443362515] [2023-12-09 15:19:47,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:19:47,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:19:47,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:19:47,292 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 15:19:47,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:19:47,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1443362515] [2023-12-09 15:19:47,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1443362515] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 15:19:47,293 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 15:19:47,293 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-09 15:19:47,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540376463] [2023-12-09 15:19:47,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 15:19:47,294 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-09 15:19:47,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:19:47,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-09 15:19:47,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2023-12-09 15:19:47,297 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 100 [2023-12-09 15:19:47,298 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 104 transitions, 325 flow. Second operand has 9 states, 9 states have (on average 69.22222222222223) internal successors, (623), 9 states have internal predecessors, (623), 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 15:19:47,298 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:19:47,298 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 100 [2023-12-09 15:19:47,298 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:19:47,468 INFO L124 PetriNetUnfolderBase]: 32/214 cut-off events. [2023-12-09 15:19:47,468 INFO L125 PetriNetUnfolderBase]: For 97/123 co-relation queries the response was YES. [2023-12-09 15:19:47,469 INFO L83 FinitePrefix]: Finished finitePrefix Result has 477 conditions, 214 events. 32/214 cut-off events. For 97/123 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 632 event pairs, 17 based on Foata normal form. 1/209 useless extension candidates. Maximal degree in co-relation 269. Up to 61 conditions per place. [2023-12-09 15:19:47,470 INFO L140 encePairwiseOnDemand]: 88/100 looper letters, 26 selfloop transitions, 6 changer transitions 31/119 dead transitions. [2023-12-09 15:19:47,470 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 119 transitions, 523 flow [2023-12-09 15:19:47,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-09 15:19:47,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-12-09 15:19:47,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 842 transitions. [2023-12-09 15:19:47,472 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.7016666666666667 [2023-12-09 15:19:47,472 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 842 transitions. [2023-12-09 15:19:47,472 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 842 transitions. [2023-12-09 15:19:47,473 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:19:47,473 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 842 transitions. [2023-12-09 15:19:47,474 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 70.16666666666667) internal successors, (842), 12 states have internal predecessors, (842), 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 15:19:47,476 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 100.0) internal successors, (1300), 13 states have internal predecessors, (1300), 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 15:19:47,477 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 100.0) internal successors, (1300), 13 states have internal predecessors, (1300), 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 15:19:47,477 INFO L308 CegarLoopForPetriNet]: 94 programPoint places, 21 predicate places. [2023-12-09 15:19:47,477 INFO L500 AbstractCegarLoop]: Abstraction has has 115 places, 119 transitions, 523 flow [2023-12-09 15:19:47,478 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 69.22222222222223) internal successors, (623), 9 states have internal predecessors, (623), 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 15:19:47,478 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:19:47,478 INFO L233 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:19:47,478 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-09 15:19:47,478 INFO L425 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 15:19:47,479 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:19:47,479 INFO L85 PathProgramCache]: Analyzing trace with hash -1568704308, now seen corresponding path program 3 times [2023-12-09 15:19:47,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:19:47,479 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [757615531] [2023-12-09 15:19:47,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:19:47,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:19:47,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:19:47,573 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 15:19:47,573 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:19:47,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [757615531] [2023-12-09 15:19:47,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [757615531] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 15:19:47,574 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 15:19:47,574 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-09 15:19:47,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30186898] [2023-12-09 15:19:47,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 15:19:47,574 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-09 15:19:47,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:19:47,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-09 15:19:47,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2023-12-09 15:19:47,576 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 100 [2023-12-09 15:19:47,576 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 119 transitions, 523 flow. Second operand has 7 states, 7 states have (on average 71.0) internal successors, (497), 7 states have internal predecessors, (497), 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 15:19:47,576 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:19:47,577 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 100 [2023-12-09 15:19:47,577 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:19:47,661 INFO L124 PetriNetUnfolderBase]: 33/255 cut-off events. [2023-12-09 15:19:47,661 INFO L125 PetriNetUnfolderBase]: For 260/346 co-relation queries the response was YES. [2023-12-09 15:19:47,662 INFO L83 FinitePrefix]: Finished finitePrefix Result has 704 conditions, 255 events. 33/255 cut-off events. For 260/346 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 965 event pairs, 5 based on Foata normal form. 7/258 useless extension candidates. Maximal degree in co-relation 363. Up to 78 conditions per place. [2023-12-09 15:19:47,663 INFO L140 encePairwiseOnDemand]: 91/100 looper letters, 24 selfloop transitions, 8 changer transitions 61/150 dead transitions. [2023-12-09 15:19:47,663 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 150 transitions, 912 flow [2023-12-09 15:19:47,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-09 15:19:47,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-12-09 15:19:47,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 583 transitions. [2023-12-09 15:19:47,664 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.72875 [2023-12-09 15:19:47,664 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 583 transitions. [2023-12-09 15:19:47,664 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 583 transitions. [2023-12-09 15:19:47,665 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:19:47,665 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 583 transitions. [2023-12-09 15:19:47,666 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 72.875) internal successors, (583), 8 states have internal predecessors, (583), 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 15:19:47,667 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 100.0) internal successors, (900), 9 states have internal predecessors, (900), 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 15:19:47,667 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 100.0) internal successors, (900), 9 states have internal predecessors, (900), 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 15:19:47,668 INFO L308 CegarLoopForPetriNet]: 94 programPoint places, 28 predicate places. [2023-12-09 15:19:47,668 INFO L500 AbstractCegarLoop]: Abstraction has has 122 places, 150 transitions, 912 flow [2023-12-09 15:19:47,668 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 71.0) internal successors, (497), 7 states have internal predecessors, (497), 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 15:19:47,668 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:19:47,668 INFO L233 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:19:47,668 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-09 15:19:47,669 INFO L425 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 15:19:47,669 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:19:47,669 INFO L85 PathProgramCache]: Analyzing trace with hash 1790844714, now seen corresponding path program 4 times [2023-12-09 15:19:47,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:19:47,669 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2047702687] [2023-12-09 15:19:47,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:19:47,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:19:47,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:19:47,760 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 15:19:47,761 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:19:47,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2047702687] [2023-12-09 15:19:47,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2047702687] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 15:19:47,761 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 15:19:47,761 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-09 15:19:47,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886598041] [2023-12-09 15:19:47,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 15:19:47,762 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-09 15:19:47,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:19:47,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-09 15:19:47,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2023-12-09 15:19:47,763 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 100 [2023-12-09 15:19:47,763 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 150 transitions, 912 flow. Second operand has 7 states, 7 states have (on average 71.0) internal successors, (497), 7 states have internal predecessors, (497), 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 15:19:47,763 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:19:47,763 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 100 [2023-12-09 15:19:47,763 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:19:47,831 INFO L124 PetriNetUnfolderBase]: 17/190 cut-off events. [2023-12-09 15:19:47,831 INFO L125 PetriNetUnfolderBase]: For 351/459 co-relation queries the response was YES. [2023-12-09 15:19:47,831 INFO L83 FinitePrefix]: Finished finitePrefix Result has 598 conditions, 190 events. 17/190 cut-off events. For 351/459 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 577 event pairs, 1 based on Foata normal form. 13/200 useless extension candidates. Maximal degree in co-relation 270. Up to 48 conditions per place. [2023-12-09 15:19:47,832 INFO L140 encePairwiseOnDemand]: 91/100 looper letters, 0 selfloop transitions, 0 changer transitions 130/130 dead transitions. [2023-12-09 15:19:47,832 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 130 transitions, 895 flow [2023-12-09 15:19:47,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-09 15:19:47,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-12-09 15:19:47,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 580 transitions. [2023-12-09 15:19:47,833 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.725 [2023-12-09 15:19:47,833 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 580 transitions. [2023-12-09 15:19:47,833 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 580 transitions. [2023-12-09 15:19:47,834 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:19:47,834 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 580 transitions. [2023-12-09 15:19:47,835 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 72.5) internal successors, (580), 8 states have internal predecessors, (580), 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 15:19:47,836 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 100.0) internal successors, (900), 9 states have internal predecessors, (900), 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 15:19:47,836 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 100.0) internal successors, (900), 9 states have internal predecessors, (900), 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 15:19:47,837 INFO L308 CegarLoopForPetriNet]: 94 programPoint places, 31 predicate places. [2023-12-09 15:19:47,837 INFO L500 AbstractCegarLoop]: Abstraction has has 125 places, 130 transitions, 895 flow [2023-12-09 15:19:47,837 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 71.0) internal successors, (497), 7 states have internal predecessors, (497), 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 15:19:47,841 INFO L161 wickiGriesTestDumper]: Dumping Owicki-Gries test to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/parallel-ticket-2.wvr.c_BEv2_AllErrorsAtOnce [2023-12-09 15:19:47,857 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2023-12-09 15:19:47,858 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2023-12-09 15:19:47,858 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2023-12-09 15:19:47,858 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-09 15:19:47,858 INFO L457 BasicCegarLoop]: Path program histogram: [4] [2023-12-09 15:19:47,860 INFO L222 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-12-09 15:19:47,860 INFO L172 ceAbstractionStarter]: Computing trace abstraction results [2023-12-09 15:19:47,865 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 03:19:47 BasicIcfg [2023-12-09 15:19:47,865 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-09 15:19:47,865 INFO L158 Benchmark]: Toolchain (without parser) took 2719.73ms. Allocated memory was 197.1MB in the beginning and 302.0MB in the end (delta: 104.9MB). Free memory was 156.5MB in the beginning and 197.1MB in the end (delta: -40.6MB). Peak memory consumption was 65.8MB. Max. memory is 8.0GB. [2023-12-09 15:19:47,865 INFO L158 Benchmark]: CDTParser took 1.37ms. Allocated memory is still 197.1MB. Free memory is still 151.7MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-09 15:19:47,866 INFO L158 Benchmark]: CACSL2BoogieTranslator took 153.75ms. Allocated memory is still 197.1MB. Free memory was 156.2MB in the beginning and 145.2MB in the end (delta: 11.0MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2023-12-09 15:19:47,866 INFO L158 Benchmark]: Boogie Procedure Inliner took 29.58ms. Allocated memory is still 197.1MB. Free memory was 145.2MB in the beginning and 143.3MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-09 15:19:47,866 INFO L158 Benchmark]: Boogie Preprocessor took 14.69ms. Allocated memory is still 197.1MB. Free memory was 143.3MB in the beginning and 141.9MB in the end (delta: 1.4MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-12-09 15:19:47,867 INFO L158 Benchmark]: RCFGBuilder took 472.21ms. Allocated memory is still 197.1MB. Free memory was 141.9MB in the beginning and 124.7MB in the end (delta: 17.1MB). Peak memory consumption was 17.8MB. Max. memory is 8.0GB. [2023-12-09 15:19:47,867 INFO L158 Benchmark]: TraceAbstraction took 2043.35ms. Allocated memory was 197.1MB in the beginning and 302.0MB in the end (delta: 104.9MB). Free memory was 124.0MB in the beginning and 197.1MB in the end (delta: -73.1MB). Peak memory consumption was 33.3MB. Max. memory is 8.0GB. [2023-12-09 15:19:47,869 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.37ms. Allocated memory is still 197.1MB. Free memory is still 151.7MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 153.75ms. Allocated memory is still 197.1MB. Free memory was 156.2MB in the beginning and 145.2MB in the end (delta: 11.0MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 29.58ms. Allocated memory is still 197.1MB. Free memory was 145.2MB in the beginning and 143.3MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 14.69ms. Allocated memory is still 197.1MB. Free memory was 143.3MB in the beginning and 141.9MB in the end (delta: 1.4MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 472.21ms. Allocated memory is still 197.1MB. Free memory was 141.9MB in the beginning and 124.7MB in the end (delta: 17.1MB). Peak memory consumption was 17.8MB. Max. memory is 8.0GB. * TraceAbstraction took 2043.35ms. Allocated memory was 197.1MB in the beginning and 302.0MB in the end (delta: 104.9MB). Free memory was 124.0MB in the beginning and 197.1MB in the end (delta: -73.1MB). Peak memory consumption was 33.3MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 102]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 118 locations, 3 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 1.9s, OverallIterations: 4, TraceHistogramMax: 1, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.0s, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 114 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 114 mSDsluCounter, 186 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 121 mSDsCounter, 33 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 396 IncrementalHoareTripleChecker+Invalid, 429 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 33 mSolverCounterUnsat, 65 mSDtfsCounter, 396 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 45 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=912occurred in iteration=3, InterpolantAutomatonStates: 39, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 340 NumberOfCodeBlocks, 340 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 336 ConstructedInterpolants, 0 QuantifiedInterpolants, 1144 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-12-09 15:19:47,883 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...