/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-wmm/safe011_tso.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-wip.dk.empire-owicki-a20a710-m [2023-12-09 14:57:07,607 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-09 14:57:07,652 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 14:57:07,686 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-09 14:57:07,686 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-09 14:57:07,687 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-09 14:57:07,687 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-09 14:57:07,687 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-09 14:57:07,688 INFO L153 SettingsManager]: * Use SBE=true [2023-12-09 14:57:07,688 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-09 14:57:07,688 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-09 14:57:07,688 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-09 14:57:07,688 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-09 14:57:07,689 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-09 14:57:07,689 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-09 14:57:07,689 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-09 14:57:07,689 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-09 14:57:07,690 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-09 14:57:07,690 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-09 14:57:07,690 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-09 14:57:07,690 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-09 14:57:07,693 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-09 14:57:07,693 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-09 14:57:07,693 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-12-09 14:57:07,696 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-09 14:57:07,696 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-09 14:57:07,696 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-09 14:57:07,697 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-09 14:57:07,697 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-09 14:57:07,697 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-09 14:57:07,698 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-09 14:57:07,698 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-09 14:57:07,698 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-09 14:57:07,698 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> true [2023-12-09 14:57:07,905 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-09 14:57:07,922 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-09 14:57:07,924 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-09 14:57:07,927 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-09 14:57:07,928 INFO L274 PluginConnector]: CDTParser initialized [2023-12-09 14:57:07,929 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe011_tso.i [2023-12-09 14:57:08,993 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-09 14:57:09,255 INFO L384 CDTParser]: Found 1 translation units. [2023-12-09 14:57:09,256 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe011_tso.i [2023-12-09 14:57:09,273 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4d0bda79e/fdaeb768b8f741e49bed0aae2640c2cb/FLAG8899b436e [2023-12-09 14:57:09,605 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4d0bda79e/fdaeb768b8f741e49bed0aae2640c2cb [2023-12-09 14:57:09,607 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-09 14:57:09,610 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-09 14:57:09,611 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-09 14:57:09,611 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-09 14:57:09,616 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-09 14:57:09,617 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 02:57:09" (1/1) ... [2023-12-09 14:57:09,617 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@218bc79c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:57:09, skipping insertion in model container [2023-12-09 14:57:09,617 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 02:57:09" (1/1) ... [2023-12-09 14:57:09,676 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-09 14:57:09,774 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-wmm/safe011_tso.i[945,958] [2023-12-09 14:57:09,861 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-09 14:57:09,868 INFO L202 MainTranslator]: Completed pre-run [2023-12-09 14:57:09,876 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-wmm/safe011_tso.i[945,958] [2023-12-09 14:57:09,897 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-09 14:57:09,915 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-12-09 14:57:09,915 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-12-09 14:57:09,920 INFO L206 MainTranslator]: Completed translation [2023-12-09 14:57:09,920 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:57:09 WrapperNode [2023-12-09 14:57:09,920 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-09 14:57:09,921 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-09 14:57:09,921 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-09 14:57:09,921 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-09 14:57:09,926 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:57:09" (1/1) ... [2023-12-09 14:57:09,935 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:57:09" (1/1) ... [2023-12-09 14:57:09,947 INFO L138 Inliner]: procedures = 176, calls = 53, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 69 [2023-12-09 14:57:09,948 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-09 14:57:09,948 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-09 14:57:09,948 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-09 14:57:09,948 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-09 14:57:09,971 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:57:09" (1/1) ... [2023-12-09 14:57:09,971 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:57:09" (1/1) ... [2023-12-09 14:57:09,973 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:57:09" (1/1) ... [2023-12-09 14:57:09,973 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:57:09" (1/1) ... [2023-12-09 14:57:09,977 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:57:09" (1/1) ... [2023-12-09 14:57:09,978 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:57:09" (1/1) ... [2023-12-09 14:57:09,979 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:57:09" (1/1) ... [2023-12-09 14:57:09,980 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:57:09" (1/1) ... [2023-12-09 14:57:09,981 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-09 14:57:09,982 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-09 14:57:09,982 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-09 14:57:09,982 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-09 14:57:09,983 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:57:09" (1/1) ... [2023-12-09 14:57:10,003 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-09 14:57:10,013 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 14:57:10,053 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 14:57:10,060 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 14:57:10,077 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-12-09 14:57:10,077 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-12-09 14:57:10,077 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-09 14:57:10,077 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-09 14:57:10,077 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-09 14:57:10,078 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-12-09 14:57:10,078 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-12-09 14:57:10,078 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-12-09 14:57:10,078 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-12-09 14:57:10,078 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-12-09 14:57:10,078 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-12-09 14:57:10,078 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-09 14:57:10,079 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-12-09 14:57:10,079 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-09 14:57:10,079 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-09 14:57:10,080 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 14:57:10,213 INFO L241 CfgBuilder]: Building ICFG [2023-12-09 14:57:10,215 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-09 14:57:10,383 INFO L282 CfgBuilder]: Performing block encoding [2023-12-09 14:57:10,390 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-09 14:57:10,390 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-12-09 14:57:10,391 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 02:57:10 BoogieIcfgContainer [2023-12-09 14:57:10,391 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-09 14:57:10,393 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-09 14:57:10,393 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-09 14:57:10,395 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-09 14:57:10,396 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 02:57:09" (1/3) ... [2023-12-09 14:57:10,396 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e70505d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 02:57:10, skipping insertion in model container [2023-12-09 14:57:10,396 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:57:09" (2/3) ... [2023-12-09 14:57:10,396 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e70505d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 02:57:10, skipping insertion in model container [2023-12-09 14:57:10,396 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 02:57:10" (3/3) ... [2023-12-09 14:57:10,397 INFO L112 eAbstractionObserver]: Analyzing ICFG safe011_tso.i [2023-12-09 14:57:10,410 INFO L197 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-09 14:57:10,410 INFO L156 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-09 14:57:10,410 INFO L508 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-12-09 14:57:10,453 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-12-09 14:57:10,502 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 99 places, 91 transitions, 194 flow [2023-12-09 14:57:10,560 INFO L124 PetriNetUnfolderBase]: 2/88 cut-off events. [2023-12-09 14:57:10,560 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-12-09 14:57:10,564 INFO L83 FinitePrefix]: Finished finitePrefix Result has 98 conditions, 88 events. 2/88 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 57 event pairs, 0 based on Foata normal form. 0/85 useless extension candidates. Maximal degree in co-relation 72. Up to 2 conditions per place. [2023-12-09 14:57:10,564 INFO L82 GeneralOperation]: Start removeDead. Operand has 99 places, 91 transitions, 194 flow [2023-12-09 14:57:10,567 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 82 places, 73 transitions, 155 flow [2023-12-09 14:57:10,577 INFO L361 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-09 14:57:10,587 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;@73d10c3e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-09 14:57:10,587 INFO L363 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-12-09 14:57:10,600 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-12-09 14:57:10,600 INFO L124 PetriNetUnfolderBase]: 1/72 cut-off events. [2023-12-09 14:57:10,600 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-12-09 14:57:10,600 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 14:57:10,601 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] [2023-12-09 14:57:10,601 INFO L425 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-12-09 14:57:10,605 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 14:57:10,605 INFO L85 PathProgramCache]: Analyzing trace with hash 1488727617, now seen corresponding path program 1 times [2023-12-09 14:57:10,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 14:57:10,612 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2008035078] [2023-12-09 14:57:10,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 14:57:10,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 14:57:10,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 14:57:11,107 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 14:57:11,107 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 14:57:11,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2008035078] [2023-12-09 14:57:11,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2008035078] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 14:57:11,108 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 14:57:11,108 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-09 14:57:11,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1673540932] [2023-12-09 14:57:11,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 14:57:11,116 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-09 14:57:11,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 14:57:11,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-09 14:57:11,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-09 14:57:11,146 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 91 [2023-12-09 14:57:11,152 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 73 transitions, 155 flow. Second operand has 7 states, 7 states have (on average 69.71428571428571) internal successors, (488), 7 states have internal predecessors, (488), 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 14:57:11,152 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 14:57:11,152 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 91 [2023-12-09 14:57:11,153 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 14:57:11,564 INFO L124 PetriNetUnfolderBase]: 260/862 cut-off events. [2023-12-09 14:57:11,564 INFO L125 PetriNetUnfolderBase]: For 11/11 co-relation queries the response was YES. [2023-12-09 14:57:11,570 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1363 conditions, 862 events. 260/862 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 5675 event pairs, 4 based on Foata normal form. 29/864 useless extension candidates. Maximal degree in co-relation 1331. Up to 127 conditions per place. [2023-12-09 14:57:11,575 INFO L140 encePairwiseOnDemand]: 79/91 looper letters, 25 selfloop transitions, 9 changer transitions 56/145 dead transitions. [2023-12-09 14:57:11,575 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 145 transitions, 488 flow [2023-12-09 14:57:11,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-09 14:57:11,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-12-09 14:57:11,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 980 transitions. [2023-12-09 14:57:11,591 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.8284023668639053 [2023-12-09 14:57:11,591 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 980 transitions. [2023-12-09 14:57:11,592 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 980 transitions. [2023-12-09 14:57:11,594 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 14:57:11,596 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 980 transitions. [2023-12-09 14:57:11,603 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 75.38461538461539) internal successors, (980), 13 states have internal predecessors, (980), 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 14:57:11,611 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 91.0) internal successors, (1274), 14 states have internal predecessors, (1274), 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 14:57:11,612 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 91.0) internal successors, (1274), 14 states have internal predecessors, (1274), 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 14:57:11,615 INFO L308 CegarLoopForPetriNet]: 82 programPoint places, 12 predicate places. [2023-12-09 14:57:11,615 INFO L500 AbstractCegarLoop]: Abstraction has has 94 places, 145 transitions, 488 flow [2023-12-09 14:57:11,615 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 69.71428571428571) internal successors, (488), 7 states have internal predecessors, (488), 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 14:57:11,617 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 14:57:11,617 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 14:57:11,617 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-09 14:57:11,618 INFO L425 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-12-09 14:57:11,618 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 14:57:11,618 INFO L85 PathProgramCache]: Analyzing trace with hash -1879854686, now seen corresponding path program 1 times [2023-12-09 14:57:11,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 14:57:11,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1935939688] [2023-12-09 14:57:11,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 14:57:11,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 14:57:11,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 14:57:11,825 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 14:57:11,825 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 14:57:11,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1935939688] [2023-12-09 14:57:11,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1935939688] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 14:57:11,825 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 14:57:11,825 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-09 14:57:11,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628281165] [2023-12-09 14:57:11,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 14:57:11,827 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-09 14:57:11,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 14:57:11,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-09 14:57:11,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-09 14:57:11,828 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 91 [2023-12-09 14:57:11,829 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 145 transitions, 488 flow. Second operand has 7 states, 7 states have (on average 69.85714285714286) internal successors, (489), 7 states have internal predecessors, (489), 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 14:57:11,829 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 14:57:11,829 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 91 [2023-12-09 14:57:11,829 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 14:57:12,068 INFO L124 PetriNetUnfolderBase]: 382/1221 cut-off events. [2023-12-09 14:57:12,069 INFO L125 PetriNetUnfolderBase]: For 68/332 co-relation queries the response was YES. [2023-12-09 14:57:12,073 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2653 conditions, 1221 events. 382/1221 cut-off events. For 68/332 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 9062 event pairs, 10 based on Foata normal form. 30/1231 useless extension candidates. Maximal degree in co-relation 2615. Up to 186 conditions per place. [2023-12-09 14:57:12,076 INFO L140 encePairwiseOnDemand]: 80/91 looper letters, 31 selfloop transitions, 15 changer transitions 188/289 dead transitions. [2023-12-09 14:57:12,076 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 289 transitions, 1541 flow [2023-12-09 14:57:12,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-09 14:57:12,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-12-09 14:57:12,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 974 transitions. [2023-12-09 14:57:12,079 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.8233305156382079 [2023-12-09 14:57:12,079 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 974 transitions. [2023-12-09 14:57:12,079 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 974 transitions. [2023-12-09 14:57:12,080 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 14:57:12,080 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 974 transitions. [2023-12-09 14:57:12,082 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 74.92307692307692) internal successors, (974), 13 states have internal predecessors, (974), 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 14:57:12,084 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 91.0) internal successors, (1274), 14 states have internal predecessors, (1274), 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 14:57:12,085 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 91.0) internal successors, (1274), 14 states have internal predecessors, (1274), 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 14:57:12,086 INFO L308 CegarLoopForPetriNet]: 82 programPoint places, 24 predicate places. [2023-12-09 14:57:12,086 INFO L500 AbstractCegarLoop]: Abstraction has has 106 places, 289 transitions, 1541 flow [2023-12-09 14:57:12,087 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 69.85714285714286) internal successors, (489), 7 states have internal predecessors, (489), 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 14:57:12,087 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 14:57:12,087 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] [2023-12-09 14:57:12,087 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-09 14:57:12,087 INFO L425 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-12-09 14:57:12,089 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 14:57:12,090 INFO L85 PathProgramCache]: Analyzing trace with hash -975981473, now seen corresponding path program 1 times [2023-12-09 14:57:12,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 14:57:12,090 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1712907403] [2023-12-09 14:57:12,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 14:57:12,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 14:57:12,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 14:57:12,258 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 14:57:12,258 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 14:57:12,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1712907403] [2023-12-09 14:57:12,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1712907403] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 14:57:12,259 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 14:57:12,259 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-09 14:57:12,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836364625] [2023-12-09 14:57:12,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 14:57:12,260 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-09 14:57:12,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 14:57:12,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-09 14:57:12,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-09 14:57:12,264 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 91 [2023-12-09 14:57:12,265 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 289 transitions, 1541 flow. Second operand has 6 states, 6 states have (on average 75.66666666666667) internal successors, (454), 6 states have internal predecessors, (454), 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 14:57:12,265 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 14:57:12,265 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 91 [2023-12-09 14:57:12,265 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 14:57:12,494 INFO L124 PetriNetUnfolderBase]: 546/1731 cut-off events. [2023-12-09 14:57:12,494 INFO L125 PetriNetUnfolderBase]: For 391/529 co-relation queries the response was YES. [2023-12-09 14:57:12,498 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4254 conditions, 1731 events. 546/1731 cut-off events. For 391/529 co-relation queries the response was YES. Maximal size of possible extension queue 182. Compared 14435 event pairs, 5 based on Foata normal form. 17/1737 useless extension candidates. Maximal degree in co-relation 4212. Up to 250 conditions per place. [2023-12-09 14:57:12,503 INFO L140 encePairwiseOnDemand]: 85/91 looper letters, 19 selfloop transitions, 6 changer transitions 283/384 dead transitions. [2023-12-09 14:57:12,503 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 384 transitions, 2505 flow [2023-12-09 14:57:12,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-09 14:57:12,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-12-09 14:57:12,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 689 transitions. [2023-12-09 14:57:12,505 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.8412698412698413 [2023-12-09 14:57:12,505 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 689 transitions. [2023-12-09 14:57:12,505 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 689 transitions. [2023-12-09 14:57:12,505 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 14:57:12,505 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 689 transitions. [2023-12-09 14:57:12,506 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 76.55555555555556) internal successors, (689), 9 states have internal predecessors, (689), 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 14:57:12,508 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 91.0) internal successors, (910), 10 states have internal predecessors, (910), 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 14:57:12,508 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 91.0) internal successors, (910), 10 states have internal predecessors, (910), 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 14:57:12,509 INFO L308 CegarLoopForPetriNet]: 82 programPoint places, 32 predicate places. [2023-12-09 14:57:12,509 INFO L500 AbstractCegarLoop]: Abstraction has has 114 places, 384 transitions, 2505 flow [2023-12-09 14:57:12,509 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 75.66666666666667) internal successors, (454), 6 states have internal predecessors, (454), 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 14:57:12,509 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 14:57:12,509 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] [2023-12-09 14:57:12,509 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-09 14:57:12,510 INFO L425 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-12-09 14:57:12,511 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 14:57:12,511 INFO L85 PathProgramCache]: Analyzing trace with hash 86278051, now seen corresponding path program 1 times [2023-12-09 14:57:12,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 14:57:12,511 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [73754459] [2023-12-09 14:57:12,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 14:57:12,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 14:57:12,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 14:57:12,676 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 14:57:12,676 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 14:57:12,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [73754459] [2023-12-09 14:57:12,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [73754459] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 14:57:12,677 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 14:57:12,677 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-09 14:57:12,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554215717] [2023-12-09 14:57:12,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 14:57:12,680 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-09 14:57:12,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 14:57:12,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-09 14:57:12,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-09 14:57:12,682 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 91 [2023-12-09 14:57:12,682 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 384 transitions, 2505 flow. Second operand has 7 states, 7 states have (on average 73.71428571428571) internal successors, (516), 7 states have internal predecessors, (516), 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 14:57:12,682 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 14:57:12,683 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 91 [2023-12-09 14:57:12,683 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 14:57:13,141 INFO L124 PetriNetUnfolderBase]: 1155/3213 cut-off events. [2023-12-09 14:57:13,141 INFO L125 PetriNetUnfolderBase]: For 2135/3199 co-relation queries the response was YES. [2023-12-09 14:57:13,150 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9015 conditions, 3213 events. 1155/3213 cut-off events. For 2135/3199 co-relation queries the response was YES. Maximal size of possible extension queue 343. Compared 29565 event pairs, 5 based on Foata normal form. 51/3236 useless extension candidates. Maximal degree in co-relation 8968. Up to 476 conditions per place. [2023-12-09 14:57:13,155 INFO L140 encePairwiseOnDemand]: 83/91 looper letters, 22 selfloop transitions, 6 changer transitions 478/573 dead transitions. [2023-12-09 14:57:13,155 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 573 transitions, 4784 flow [2023-12-09 14:57:13,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-09 14:57:13,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-12-09 14:57:13,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 973 transitions. [2023-12-09 14:57:13,158 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.8224852071005917 [2023-12-09 14:57:13,158 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 973 transitions. [2023-12-09 14:57:13,158 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 973 transitions. [2023-12-09 14:57:13,159 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 14:57:13,159 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 973 transitions. [2023-12-09 14:57:13,161 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 74.84615384615384) internal successors, (973), 13 states have internal predecessors, (973), 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 14:57:13,162 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 91.0) internal successors, (1274), 14 states have internal predecessors, (1274), 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 14:57:13,164 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 91.0) internal successors, (1274), 14 states have internal predecessors, (1274), 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 14:57:13,165 INFO L308 CegarLoopForPetriNet]: 82 programPoint places, 44 predicate places. [2023-12-09 14:57:13,165 INFO L500 AbstractCegarLoop]: Abstraction has has 126 places, 573 transitions, 4784 flow [2023-12-09 14:57:13,166 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 73.71428571428571) internal successors, (516), 7 states have internal predecessors, (516), 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 14:57:13,166 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 14:57:13,166 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] [2023-12-09 14:57:13,166 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-09 14:57:13,166 INFO L425 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-12-09 14:57:13,168 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 14:57:13,168 INFO L85 PathProgramCache]: Analyzing trace with hash -2055394883, now seen corresponding path program 1 times [2023-12-09 14:57:13,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 14:57:13,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1264932860] [2023-12-09 14:57:13,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 14:57:13,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 14:57:13,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 14:57:13,295 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 14:57:13,296 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 14:57:13,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1264932860] [2023-12-09 14:57:13,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1264932860] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 14:57:13,296 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 14:57:13,296 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-09 14:57:13,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [963560355] [2023-12-09 14:57:13,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 14:57:13,296 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-09 14:57:13,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 14:57:13,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-09 14:57:13,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-09 14:57:13,298 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 91 [2023-12-09 14:57:13,298 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 573 transitions, 4784 flow. Second operand has 6 states, 6 states have (on average 74.0) internal successors, (444), 6 states have internal predecessors, (444), 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 14:57:13,298 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 14:57:13,298 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 91 [2023-12-09 14:57:13,298 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 14:57:13,725 INFO L124 PetriNetUnfolderBase]: 1424/3950 cut-off events. [2023-12-09 14:57:13,725 INFO L125 PetriNetUnfolderBase]: For 1890/2095 co-relation queries the response was YES. [2023-12-09 14:57:13,736 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9940 conditions, 3950 events. 1424/3950 cut-off events. For 1890/2095 co-relation queries the response was YES. Maximal size of possible extension queue 275. Compared 37670 event pairs, 29 based on Foata normal form. 31/3808 useless extension candidates. Maximal degree in co-relation 9889. Up to 905 conditions per place. [2023-12-09 14:57:13,745 INFO L140 encePairwiseOnDemand]: 81/91 looper letters, 44 selfloop transitions, 17 changer transitions 169/406 dead transitions. [2023-12-09 14:57:13,746 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 406 transitions, 3170 flow [2023-12-09 14:57:13,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-09 14:57:13,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-12-09 14:57:13,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 770 transitions. [2023-12-09 14:57:13,748 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.8461538461538461 [2023-12-09 14:57:13,748 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 770 transitions. [2023-12-09 14:57:13,748 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 770 transitions. [2023-12-09 14:57:13,748 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 14:57:13,748 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 770 transitions. [2023-12-09 14:57:13,749 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 77.0) internal successors, (770), 10 states have internal predecessors, (770), 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 14:57:13,751 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 91.0) internal successors, (1001), 11 states have internal predecessors, (1001), 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 14:57:13,751 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 91.0) internal successors, (1001), 11 states have internal predecessors, (1001), 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 14:57:13,752 INFO L308 CegarLoopForPetriNet]: 82 programPoint places, 53 predicate places. [2023-12-09 14:57:13,752 INFO L500 AbstractCegarLoop]: Abstraction has has 135 places, 406 transitions, 3170 flow [2023-12-09 14:57:13,752 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 74.0) internal successors, (444), 6 states have internal predecessors, (444), 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 14:57:13,752 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 14:57:13,752 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] [2023-12-09 14:57:13,752 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-09 14:57:13,752 INFO L425 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-12-09 14:57:13,753 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 14:57:13,753 INFO L85 PathProgramCache]: Analyzing trace with hash -289059242, now seen corresponding path program 1 times [2023-12-09 14:57:13,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 14:57:13,753 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [577847540] [2023-12-09 14:57:13,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 14:57:13,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 14:57:13,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 14:57:13,845 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 14:57:13,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 14:57:13,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [577847540] [2023-12-09 14:57:13,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [577847540] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 14:57:13,845 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 14:57:13,846 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-09 14:57:13,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1179526030] [2023-12-09 14:57:13,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 14:57:13,846 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-09 14:57:13,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 14:57:13,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-09 14:57:13,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-09 14:57:13,847 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 91 [2023-12-09 14:57:13,848 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 406 transitions, 3170 flow. Second operand has 7 states, 7 states have (on average 73.85714285714286) internal successors, (517), 7 states have internal predecessors, (517), 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 14:57:13,848 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 14:57:13,848 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 91 [2023-12-09 14:57:13,848 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 14:57:14,176 INFO L124 PetriNetUnfolderBase]: 752/2277 cut-off events. [2023-12-09 14:57:14,177 INFO L125 PetriNetUnfolderBase]: For 1205/1749 co-relation queries the response was YES. [2023-12-09 14:57:14,182 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6234 conditions, 2277 events. 752/2277 cut-off events. For 1205/1749 co-relation queries the response was YES. Maximal size of possible extension queue 276. Compared 20634 event pairs, 0 based on Foata normal form. 147/2331 useless extension candidates. Maximal degree in co-relation 6179. Up to 590 conditions per place. [2023-12-09 14:57:14,187 INFO L140 encePairwiseOnDemand]: 81/91 looper letters, 40 selfloop transitions, 44 changer transitions 104/270 dead transitions. [2023-12-09 14:57:14,187 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 270 transitions, 1978 flow [2023-12-09 14:57:14,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-09 14:57:14,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-12-09 14:57:14,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1001 transitions. [2023-12-09 14:57:14,189 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.8461538461538461 [2023-12-09 14:57:14,190 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1001 transitions. [2023-12-09 14:57:14,190 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1001 transitions. [2023-12-09 14:57:14,190 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 14:57:14,190 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1001 transitions. [2023-12-09 14:57:14,192 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 77.0) internal successors, (1001), 13 states have internal predecessors, (1001), 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 14:57:14,193 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 91.0) internal successors, (1274), 14 states have internal predecessors, (1274), 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 14:57:14,194 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 91.0) internal successors, (1274), 14 states have internal predecessors, (1274), 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 14:57:14,194 INFO L308 CegarLoopForPetriNet]: 82 programPoint places, 59 predicate places. [2023-12-09 14:57:14,194 INFO L500 AbstractCegarLoop]: Abstraction has has 141 places, 270 transitions, 1978 flow [2023-12-09 14:57:14,195 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 73.85714285714286) internal successors, (517), 7 states have internal predecessors, (517), 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 14:57:14,195 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 14:57:14,195 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] [2023-12-09 14:57:14,195 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-09 14:57:14,195 INFO L425 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-12-09 14:57:14,195 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 14:57:14,195 INFO L85 PathProgramCache]: Analyzing trace with hash 2073852381, now seen corresponding path program 1 times [2023-12-09 14:57:14,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 14:57:14,196 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1260509040] [2023-12-09 14:57:14,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 14:57:14,196 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 14:57:14,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 14:57:14,299 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 14:57:14,299 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 14:57:14,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1260509040] [2023-12-09 14:57:14,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1260509040] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 14:57:14,300 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 14:57:14,300 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-09 14:57:14,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936318327] [2023-12-09 14:57:14,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 14:57:14,300 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-09 14:57:14,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 14:57:14,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-09 14:57:14,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-12-09 14:57:14,302 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 91 [2023-12-09 14:57:14,302 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 270 transitions, 1978 flow. Second operand has 8 states, 8 states have (on average 73.75) internal successors, (590), 8 states have internal predecessors, (590), 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 14:57:14,302 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 14:57:14,302 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 91 [2023-12-09 14:57:14,302 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 14:57:14,669 INFO L124 PetriNetUnfolderBase]: 657/1896 cut-off events. [2023-12-09 14:57:14,669 INFO L125 PetriNetUnfolderBase]: For 1418/2713 co-relation queries the response was YES. [2023-12-09 14:57:14,679 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6282 conditions, 1896 events. 657/1896 cut-off events. For 1418/2713 co-relation queries the response was YES. Maximal size of possible extension queue 281. Compared 17201 event pairs, 0 based on Foata normal form. 224/2044 useless extension candidates. Maximal degree in co-relation 6223. Up to 514 conditions per place. [2023-12-09 14:57:14,690 INFO L140 encePairwiseOnDemand]: 81/91 looper letters, 0 selfloop transitions, 0 changer transitions 216/216 dead transitions. [2023-12-09 14:57:14,690 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 216 transitions, 1708 flow [2023-12-09 14:57:14,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-09 14:57:14,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-12-09 14:57:14,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1216 transitions. [2023-12-09 14:57:14,699 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.8351648351648352 [2023-12-09 14:57:14,699 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1216 transitions. [2023-12-09 14:57:14,699 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1216 transitions. [2023-12-09 14:57:14,700 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 14:57:14,700 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1216 transitions. [2023-12-09 14:57:14,702 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 76.0) internal successors, (1216), 16 states have internal predecessors, (1216), 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 14:57:14,705 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 91.0) internal successors, (1547), 17 states have internal predecessors, (1547), 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 14:57:14,705 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 91.0) internal successors, (1547), 17 states have internal predecessors, (1547), 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 14:57:14,706 INFO L308 CegarLoopForPetriNet]: 82 programPoint places, 54 predicate places. [2023-12-09 14:57:14,706 INFO L500 AbstractCegarLoop]: Abstraction has has 136 places, 216 transitions, 1708 flow [2023-12-09 14:57:14,706 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 73.75) internal successors, (590), 8 states have internal predecessors, (590), 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 14:57:14,727 INFO L161 wickiGriesTestDumper]: Dumping Owicki-Gries test to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/safe011_tso.i_BEv2_AllErrorsAtOnce [2023-12-09 14:57:14,765 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2023-12-09 14:57:14,765 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2023-12-09 14:57:14,765 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-12-09 14:57:14,765 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-12-09 14:57:14,765 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-09 14:57:14,766 INFO L457 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2023-12-09 14:57:14,768 INFO L222 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-12-09 14:57:14,768 INFO L172 ceAbstractionStarter]: Computing trace abstraction results [2023-12-09 14:57:14,773 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 02:57:14 BasicIcfg [2023-12-09 14:57:14,773 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-09 14:57:14,773 INFO L158 Benchmark]: Toolchain (without parser) took 5163.97ms. Allocated memory was 315.6MB in the beginning and 407.9MB in the end (delta: 92.3MB). Free memory was 264.0MB in the beginning and 151.3MB in the end (delta: 112.7MB). Peak memory consumption was 204.2MB. Max. memory is 8.0GB. [2023-12-09 14:57:14,774 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 217.1MB. Free memory is still 167.4MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-09 14:57:14,774 INFO L158 Benchmark]: CACSL2BoogieTranslator took 309.76ms. Allocated memory is still 315.6MB. Free memory was 263.8MB in the beginning and 243.3MB in the end (delta: 20.4MB). Peak memory consumption was 19.9MB. Max. memory is 8.0GB. [2023-12-09 14:57:14,774 INFO L158 Benchmark]: Boogie Procedure Inliner took 26.54ms. Allocated memory is still 315.6MB. Free memory was 243.3MB in the beginning and 241.2MB in the end (delta: 2.1MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-12-09 14:57:14,774 INFO L158 Benchmark]: Boogie Preprocessor took 33.36ms. Allocated memory is still 315.6MB. Free memory was 241.2MB in the beginning and 239.6MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-09 14:57:14,774 INFO L158 Benchmark]: RCFGBuilder took 409.40ms. Allocated memory is still 315.6MB. Free memory was 239.6MB in the beginning and 281.1MB in the end (delta: -41.5MB). Peak memory consumption was 16.2MB. Max. memory is 8.0GB. [2023-12-09 14:57:14,774 INFO L158 Benchmark]: TraceAbstraction took 4380.02ms. Allocated memory was 315.6MB in the beginning and 407.9MB in the end (delta: 92.3MB). Free memory was 280.6MB in the beginning and 151.3MB in the end (delta: 129.3MB). Peak memory consumption was 220.5MB. Max. memory is 8.0GB. [2023-12-09 14:57:14,775 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 217.1MB. Free memory is still 167.4MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 309.76ms. Allocated memory is still 315.6MB. Free memory was 263.8MB in the beginning and 243.3MB in the end (delta: 20.4MB). Peak memory consumption was 19.9MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 26.54ms. Allocated memory is still 315.6MB. Free memory was 243.3MB in the beginning and 241.2MB in the end (delta: 2.1MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 33.36ms. Allocated memory is still 315.6MB. Free memory was 241.2MB in the beginning and 239.6MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 409.40ms. Allocated memory is still 315.6MB. Free memory was 239.6MB in the beginning and 281.1MB in the end (delta: -41.5MB). Peak memory consumption was 16.2MB. Max. memory is 8.0GB. * TraceAbstraction took 4380.02ms. Allocated memory was 315.6MB in the beginning and 407.9MB in the end (delta: 92.3MB). Free memory was 280.6MB in the beginning and 151.3MB in the end (delta: 129.3MB). Peak memory consumption was 220.5MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 18]: 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 7 procedures, 117 locations, 4 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: 4.3s, OverallIterations: 7, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 2.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 374 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 374 mSDsluCounter, 418 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 324 mSDsCounter, 24 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 448 IncrementalHoareTripleChecker+Invalid, 472 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 24 mSolverCounterUnsat, 94 mSDtfsCounter, 448 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 102 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 166 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=4784occurred in iteration=4, InterpolantAutomatonStates: 87, 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, 1.1s InterpolantComputationTime, 389 NumberOfCodeBlocks, 389 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 382 ConstructedInterpolants, 0 QuantifiedInterpolants, 1386 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 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 14:57:14,798 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...