/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg true -i ../../../trunk/examples/svcomp/pthread-wmm/safe005_tso.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-wip.dk.empire-owicki-175f719-m [2023-11-29 19:32:22,852 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 19:32:22,944 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf [2023-11-29 19:32:22,978 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 19:32:22,979 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 19:32:22,980 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 19:32:22,982 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 19:32:22,982 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 19:32:22,982 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 19:32:22,986 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 19:32:22,986 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 19:32:22,986 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 19:32:22,987 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 19:32:22,988 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 19:32:22,988 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 19:32:22,988 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 19:32:22,989 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 19:32:22,989 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 19:32:22,989 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 19:32:22,989 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 19:32:22,989 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 19:32:22,990 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 19:32:22,990 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 19:32:22,990 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-11-29 19:32:22,991 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 19:32:22,992 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-29 19:32:22,992 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 19:32:22,993 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 19:32:22,993 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 19:32:22,993 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 19:32:22,994 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 19:32:22,994 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 19:32:22,994 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 19:32:22,994 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> true [2023-11-29 19:32:23,186 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 19:32:23,204 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 19:32:23,205 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 19:32:23,206 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 19:32:23,206 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 19:32:23,207 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe005_tso.i [2023-11-29 19:32:24,335 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 19:32:24,581 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 19:32:24,582 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe005_tso.i [2023-11-29 19:32:24,597 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9efa33121/a513227d8cc64da8bdc86bd1e2787851/FLAGedcd4d3a0 [2023-11-29 19:32:24,607 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9efa33121/a513227d8cc64da8bdc86bd1e2787851 [2023-11-29 19:32:24,609 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 19:32:24,610 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-11-29 19:32:24,611 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 19:32:24,611 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 19:32:24,614 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 19:32:24,615 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 07:32:24" (1/1) ... [2023-11-29 19:32:24,616 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6a6bc32c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:32:24, skipping insertion in model container [2023-11-29 19:32:24,616 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 07:32:24" (1/1) ... [2023-11-29 19:32:24,651 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 19:32:24,819 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/safe005_tso.i[945,958] [2023-11-29 19:32:24,998 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 19:32:25,011 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 19:32:25,023 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/safe005_tso.i[945,958] [2023-11-29 19:32:25,061 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 19:32:25,092 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 19:32:25,092 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 19:32:25,099 INFO L206 MainTranslator]: Completed translation [2023-11-29 19:32:25,099 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:32:25 WrapperNode [2023-11-29 19:32:25,099 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 19:32:25,100 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 19:32:25,101 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 19:32:25,101 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 19:32:25,107 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:32:25" (1/1) ... [2023-11-29 19:32:25,133 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:32:25" (1/1) ... [2023-11-29 19:32:25,156 INFO L138 Inliner]: procedures = 176, calls = 55, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 70 [2023-11-29 19:32:25,156 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 19:32:25,157 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 19:32:25,157 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 19:32:25,157 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 19:32:25,164 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:32:25" (1/1) ... [2023-11-29 19:32:25,164 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:32:25" (1/1) ... [2023-11-29 19:32:25,181 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:32:25" (1/1) ... [2023-11-29 19:32:25,182 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:32:25" (1/1) ... [2023-11-29 19:32:25,186 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:32:25" (1/1) ... [2023-11-29 19:32:25,187 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:32:25" (1/1) ... [2023-11-29 19:32:25,188 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:32:25" (1/1) ... [2023-11-29 19:32:25,189 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:32:25" (1/1) ... [2023-11-29 19:32:25,191 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 19:32:25,202 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 19:32:25,202 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 19:32:25,203 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 19:32:25,203 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:32:25" (1/1) ... [2023-11-29 19:32:25,208 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-29 19:32:25,220 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-29 19:32:25,231 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-29 19:32:25,251 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-29 19:32:25,261 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-29 19:32:25,261 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-29 19:32:25,262 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 19:32:25,262 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-29 19:32:25,262 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-29 19:32:25,263 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-11-29 19:32:25,263 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-11-29 19:32:25,263 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-11-29 19:32:25,263 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-11-29 19:32:25,263 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-11-29 19:32:25,263 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-11-29 19:32:25,264 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-29 19:32:25,264 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-29 19:32:25,264 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 19:32:25,264 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 19:32:25,265 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-29 19:32:25,391 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 19:32:25,393 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 19:32:25,514 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 19:32:25,522 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 19:32:25,522 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-29 19:32:25,524 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 07:32:25 BoogieIcfgContainer [2023-11-29 19:32:25,524 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 19:32:25,526 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 19:32:25,526 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 19:32:25,529 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 19:32:25,529 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 07:32:24" (1/3) ... [2023-11-29 19:32:25,529 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6af02d4c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 07:32:25, skipping insertion in model container [2023-11-29 19:32:25,530 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:32:25" (2/3) ... [2023-11-29 19:32:25,530 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6af02d4c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 07:32:25, skipping insertion in model container [2023-11-29 19:32:25,530 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 07:32:25" (3/3) ... [2023-11-29 19:32:25,531 INFO L112 eAbstractionObserver]: Analyzing ICFG safe005_tso.i [2023-11-29 19:32:25,547 INFO L197 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 19:32:25,548 INFO L156 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-29 19:32:25,548 INFO L508 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-29 19:32:25,596 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-29 19:32:25,626 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 101 places, 93 transitions, 198 flow [2023-11-29 19:32:25,664 INFO L124 PetriNetUnfolderBase]: 2/90 cut-off events. [2023-11-29 19:32:25,664 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-29 19:32:25,668 INFO L83 FinitePrefix]: Finished finitePrefix Result has 100 conditions, 90 events. 2/90 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 56 event pairs, 0 based on Foata normal form. 0/87 useless extension candidates. Maximal degree in co-relation 73. Up to 2 conditions per place. [2023-11-29 19:32:25,669 INFO L82 GeneralOperation]: Start removeDead. Operand has 101 places, 93 transitions, 198 flow [2023-11-29 19:32:25,672 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 84 places, 75 transitions, 159 flow [2023-11-29 19:32:25,680 INFO L361 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 19:32:25,686 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;@7cb05439, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 19:32:25,687 INFO L363 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-11-29 19:32:25,708 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-29 19:32:25,708 INFO L124 PetriNetUnfolderBase]: 1/74 cut-off events. [2023-11-29 19:32:25,708 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-29 19:32:25,708 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 19:32:25,709 INFO L232 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 19:32:25,709 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)] === [2023-11-29 19:32:25,714 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 19:32:25,714 INFO L85 PathProgramCache]: Analyzing trace with hash -510779156, now seen corresponding path program 1 times [2023-11-29 19:32:25,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 19:32:25,722 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1669466872] [2023-11-29 19:32:25,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 19:32:25,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 19:32:25,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 19:32:26,504 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 19:32:26,504 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 19:32:26,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1669466872] [2023-11-29 19:32:26,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1669466872] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 19:32:26,505 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 19:32:26,505 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 19:32:26,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774164790] [2023-11-29 19:32:26,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 19:32:26,514 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 19:32:26,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 19:32:26,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 19:32:26,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-29 19:32:26,554 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 93 [2023-11-29 19:32:26,559 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 75 transitions, 159 flow. Second operand has 7 states, 7 states have (on average 70.85714285714286) internal successors, (496), 7 states have internal predecessors, (496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 19:32:26,560 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 19:32:26,560 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 93 [2023-11-29 19:32:26,561 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 19:32:27,014 INFO L124 PetriNetUnfolderBase]: 290/830 cut-off events. [2023-11-29 19:32:27,015 INFO L125 PetriNetUnfolderBase]: For 10/10 co-relation queries the response was YES. [2023-11-29 19:32:27,022 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1359 conditions, 830 events. 290/830 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 5151 event pairs, 11 based on Foata normal form. 35/834 useless extension candidates. Maximal degree in co-relation 1325. Up to 110 conditions per place. [2023-11-29 19:32:27,026 INFO L140 encePairwiseOnDemand]: 82/93 looper letters, 21 selfloop transitions, 6 changer transitions 45/128 dead transitions. [2023-11-29 19:32:27,027 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 128 transitions, 409 flow [2023-11-29 19:32:27,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-29 19:32:27,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-11-29 19:32:27,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 975 transitions. [2023-11-29 19:32:27,047 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.8064516129032258 [2023-11-29 19:32:27,048 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 975 transitions. [2023-11-29 19:32:27,048 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 975 transitions. [2023-11-29 19:32:27,052 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 19:32:27,054 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 975 transitions. [2023-11-29 19:32:27,061 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 75.0) internal successors, (975), 13 states have internal predecessors, (975), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 19:32:27,068 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 93.0) internal successors, (1302), 14 states have internal predecessors, (1302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 19:32:27,069 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 93.0) internal successors, (1302), 14 states have internal predecessors, (1302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 19:32:27,073 INFO L307 CegarLoopForPetriNet]: 84 programPoint places, 12 predicate places. [2023-11-29 19:32:27,073 INFO L500 AbstractCegarLoop]: Abstraction has has 96 places, 128 transitions, 409 flow [2023-11-29 19:32:27,074 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 70.85714285714286) internal successors, (496), 7 states have internal predecessors, (496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 19:32:27,074 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 19:32:27,074 INFO L232 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 19:32:27,075 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-29 19:32:27,075 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)] === [2023-11-29 19:32:27,077 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 19:32:27,077 INFO L85 PathProgramCache]: Analyzing trace with hash -1922811762, now seen corresponding path program 1 times [2023-11-29 19:32:27,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 19:32:27,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1274394872] [2023-11-29 19:32:27,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 19:32:27,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 19:32:27,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 19:32:27,461 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 19:32:27,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 19:32:27,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1274394872] [2023-11-29 19:32:27,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1274394872] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 19:32:27,463 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 19:32:27,463 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-29 19:32:27,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [100862844] [2023-11-29 19:32:27,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 19:32:27,465 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 19:32:27,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 19:32:27,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 19:32:27,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-11-29 19:32:27,468 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 93 [2023-11-29 19:32:27,469 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 128 transitions, 409 flow. Second operand has 8 states, 8 states have (on average 70.875) internal successors, (567), 8 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 19:32:27,469 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 19:32:27,469 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 93 [2023-11-29 19:32:27,469 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 19:32:27,883 INFO L124 PetriNetUnfolderBase]: 382/1083 cut-off events. [2023-11-29 19:32:27,884 INFO L125 PetriNetUnfolderBase]: For 100/1688 co-relation queries the response was YES. [2023-11-29 19:32:27,888 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2513 conditions, 1083 events. 382/1083 cut-off events. For 100/1688 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 7467 event pairs, 2 based on Foata normal form. 19/1064 useless extension candidates. Maximal degree in co-relation 2472. Up to 174 conditions per place. [2023-11-29 19:32:27,891 INFO L140 encePairwiseOnDemand]: 82/93 looper letters, 22 selfloop transitions, 9 changer transitions 135/222 dead transitions. [2023-11-29 19:32:27,891 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 222 transitions, 1123 flow [2023-11-29 19:32:27,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-29 19:32:27,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-11-29 19:32:27,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1272 transitions. [2023-11-29 19:32:27,895 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.8045540796963947 [2023-11-29 19:32:27,895 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1272 transitions. [2023-11-29 19:32:27,895 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1272 transitions. [2023-11-29 19:32:27,896 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 19:32:27,896 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1272 transitions. [2023-11-29 19:32:27,899 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 74.82352941176471) internal successors, (1272), 17 states have internal predecessors, (1272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 19:32:27,902 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 93.0) internal successors, (1674), 18 states have internal predecessors, (1674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 19:32:27,903 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 93.0) internal successors, (1674), 18 states have internal predecessors, (1674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 19:32:27,904 INFO L307 CegarLoopForPetriNet]: 84 programPoint places, 28 predicate places. [2023-11-29 19:32:27,904 INFO L500 AbstractCegarLoop]: Abstraction has has 112 places, 222 transitions, 1123 flow [2023-11-29 19:32:27,905 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 70.875) internal successors, (567), 8 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 19:32:27,905 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 19:32:27,905 INFO L232 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 19:32:27,905 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-29 19:32:27,906 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)] === [2023-11-29 19:32:27,906 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 19:32:27,907 INFO L85 PathProgramCache]: Analyzing trace with hash 1633513069, now seen corresponding path program 1 times [2023-11-29 19:32:27,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 19:32:27,908 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1059521431] [2023-11-29 19:32:27,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 19:32:27,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 19:32:27,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 19:32:28,118 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 19:32:28,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 19:32:28,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1059521431] [2023-11-29 19:32:28,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1059521431] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 19:32:28,120 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 19:32:28,120 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 19:32:28,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1954570801] [2023-11-29 19:32:28,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 19:32:28,121 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 19:32:28,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 19:32:28,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 19:32:28,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-29 19:32:28,127 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 93 [2023-11-29 19:32:28,128 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 222 transitions, 1123 flow. Second operand has 6 states, 6 states have (on average 77.66666666666667) internal successors, (466), 6 states have internal predecessors, (466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 19:32:28,132 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 19:32:28,132 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 93 [2023-11-29 19:32:28,133 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 19:32:28,391 INFO L124 PetriNetUnfolderBase]: 430/1408 cut-off events. [2023-11-29 19:32:28,392 INFO L125 PetriNetUnfolderBase]: For 533/1274 co-relation queries the response was YES. [2023-11-29 19:32:28,394 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3555 conditions, 1408 events. 430/1408 cut-off events. For 533/1274 co-relation queries the response was YES. Maximal size of possible extension queue 157. Compared 11571 event pairs, 6 based on Foata normal form. 21/1398 useless extension candidates. Maximal degree in co-relation 3510. Up to 226 conditions per place. [2023-11-29 19:32:28,396 INFO L140 encePairwiseOnDemand]: 87/93 looper letters, 15 selfloop transitions, 3 changer transitions 200/287 dead transitions. [2023-11-29 19:32:28,397 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 287 transitions, 1793 flow [2023-11-29 19:32:28,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 19:32:28,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-29 19:32:28,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 707 transitions. [2023-11-29 19:32:28,399 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.8446833930704899 [2023-11-29 19:32:28,399 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 707 transitions. [2023-11-29 19:32:28,399 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 707 transitions. [2023-11-29 19:32:28,399 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 19:32:28,400 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 707 transitions. [2023-11-29 19:32:28,401 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 78.55555555555556) internal successors, (707), 9 states have internal predecessors, (707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 19:32:28,402 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 93.0) internal successors, (930), 10 states have internal predecessors, (930), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 19:32:28,403 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 93.0) internal successors, (930), 10 states have internal predecessors, (930), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 19:32:28,404 INFO L307 CegarLoopForPetriNet]: 84 programPoint places, 36 predicate places. [2023-11-29 19:32:28,404 INFO L500 AbstractCegarLoop]: Abstraction has has 120 places, 287 transitions, 1793 flow [2023-11-29 19:32:28,405 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 77.66666666666667) internal successors, (466), 6 states have internal predecessors, (466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 19:32:28,405 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 19:32:28,405 INFO L232 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 19:32:28,405 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-29 19:32:28,405 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)] === [2023-11-29 19:32:28,406 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 19:32:28,406 INFO L85 PathProgramCache]: Analyzing trace with hash -1581488364, now seen corresponding path program 1 times [2023-11-29 19:32:28,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 19:32:28,407 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [870556790] [2023-11-29 19:32:28,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 19:32:28,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 19:32:28,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 19:32:28,600 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 19:32:28,600 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 19:32:28,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [870556790] [2023-11-29 19:32:28,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [870556790] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 19:32:28,601 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 19:32:28,601 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-29 19:32:28,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626495188] [2023-11-29 19:32:28,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 19:32:28,605 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 19:32:28,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 19:32:28,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 19:32:28,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-11-29 19:32:28,608 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 93 [2023-11-29 19:32:28,609 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 287 transitions, 1793 flow. Second operand has 8 states, 8 states have (on average 71.125) internal successors, (569), 8 states have internal predecessors, (569), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 19:32:28,609 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 19:32:28,609 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 93 [2023-11-29 19:32:28,609 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 19:32:29,288 INFO L124 PetriNetUnfolderBase]: 593/2506 cut-off events. [2023-11-29 19:32:29,288 INFO L125 PetriNetUnfolderBase]: For 1114/4935 co-relation queries the response was YES. [2023-11-29 19:32:29,296 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7394 conditions, 2506 events. 593/2506 cut-off events. For 1114/4935 co-relation queries the response was YES. Maximal size of possible extension queue 300. Compared 26414 event pairs, 7 based on Foata normal form. 104/2577 useless extension candidates. Maximal degree in co-relation 7342. Up to 338 conditions per place. [2023-11-29 19:32:29,301 INFO L140 encePairwiseOnDemand]: 83/93 looper letters, 24 selfloop transitions, 7 changer transitions 507/594 dead transitions. [2023-11-29 19:32:29,301 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 594 transitions, 5129 flow [2023-11-29 19:32:29,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-11-29 19:32:29,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2023-11-29 19:32:29,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 1850 transitions. [2023-11-29 19:32:29,307 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.7956989247311828 [2023-11-29 19:32:29,307 INFO L72 ComplementDD]: Start complementDD. Operand 25 states and 1850 transitions. [2023-11-29 19:32:29,307 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 1850 transitions. [2023-11-29 19:32:29,308 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 19:32:29,308 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 25 states and 1850 transitions. [2023-11-29 19:32:29,311 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 26 states, 25 states have (on average 74.0) internal successors, (1850), 25 states have internal predecessors, (1850), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 19:32:29,318 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 26 states, 26 states have (on average 93.0) internal successors, (2418), 26 states have internal predecessors, (2418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 19:32:29,320 INFO L81 ComplementDD]: Finished complementDD. Result has 26 states, 26 states have (on average 93.0) internal successors, (2418), 26 states have internal predecessors, (2418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 19:32:29,321 INFO L307 CegarLoopForPetriNet]: 84 programPoint places, 60 predicate places. [2023-11-29 19:32:29,321 INFO L500 AbstractCegarLoop]: Abstraction has has 144 places, 594 transitions, 5129 flow [2023-11-29 19:32:29,322 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 71.125) internal successors, (569), 8 states have internal predecessors, (569), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 19:32:29,322 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 19:32:29,322 INFO L232 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 19:32:29,322 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-29 19:32:29,322 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)] === [2023-11-29 19:32:29,323 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 19:32:29,323 INFO L85 PathProgramCache]: Analyzing trace with hash 989084596, now seen corresponding path program 1 times [2023-11-29 19:32:29,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 19:32:29,324 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1450571362] [2023-11-29 19:32:29,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 19:32:29,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 19:32:29,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 19:32:29,465 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 19:32:29,465 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 19:32:29,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1450571362] [2023-11-29 19:32:29,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1450571362] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 19:32:29,465 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 19:32:29,465 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 19:32:29,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [356920491] [2023-11-29 19:32:29,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 19:32:29,467 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 19:32:29,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 19:32:29,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 19:32:29,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-29 19:32:29,469 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 93 [2023-11-29 19:32:29,470 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 594 transitions, 5129 flow. Second operand has 6 states, 6 states have (on average 76.0) internal successors, (456), 6 states have internal predecessors, (456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 19:32:29,470 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 19:32:29,470 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 93 [2023-11-29 19:32:29,470 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 19:32:30,489 INFO L124 PetriNetUnfolderBase]: 2757/7589 cut-off events. [2023-11-29 19:32:30,490 INFO L125 PetriNetUnfolderBase]: For 2141/2913 co-relation queries the response was YES. [2023-11-29 19:32:30,513 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18958 conditions, 7589 events. 2757/7589 cut-off events. For 2141/2913 co-relation queries the response was YES. Maximal size of possible extension queue 764. Compared 86473 event pairs, 91 based on Foata normal form. 40/7117 useless extension candidates. Maximal degree in co-relation 18902. Up to 2186 conditions per place. [2023-11-29 19:32:30,526 INFO L140 encePairwiseOnDemand]: 83/93 looper letters, 22 selfloop transitions, 8 changer transitions 432/551 dead transitions. [2023-11-29 19:32:30,526 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 551 transitions, 4651 flow [2023-11-29 19:32:30,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 19:32:30,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-29 19:32:30,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 790 transitions. [2023-11-29 19:32:30,529 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.8494623655913979 [2023-11-29 19:32:30,529 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 790 transitions. [2023-11-29 19:32:30,529 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 790 transitions. [2023-11-29 19:32:30,529 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 19:32:30,530 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 790 transitions. [2023-11-29 19:32:30,531 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 79.0) internal successors, (790), 10 states have internal predecessors, (790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 19:32:30,533 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 93.0) internal successors, (1023), 11 states have internal predecessors, (1023), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 19:32:30,533 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 93.0) internal successors, (1023), 11 states have internal predecessors, (1023), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 19:32:30,535 INFO L307 CegarLoopForPetriNet]: 84 programPoint places, 69 predicate places. [2023-11-29 19:32:30,535 INFO L500 AbstractCegarLoop]: Abstraction has has 153 places, 551 transitions, 4651 flow [2023-11-29 19:32:30,536 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 76.0) internal successors, (456), 6 states have internal predecessors, (456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 19:32:30,536 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 19:32:30,536 INFO L232 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 19:32:30,536 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-29 19:32:30,536 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)] === [2023-11-29 19:32:30,537 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 19:32:30,537 INFO L85 PathProgramCache]: Analyzing trace with hash 128561677, now seen corresponding path program 1 times [2023-11-29 19:32:30,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 19:32:30,538 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [198694431] [2023-11-29 19:32:30,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 19:32:30,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 19:32:30,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 19:32:30,682 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 19:32:30,682 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 19:32:30,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [198694431] [2023-11-29 19:32:30,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [198694431] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 19:32:30,682 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 19:32:30,683 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 19:32:30,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563495037] [2023-11-29 19:32:30,683 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 19:32:30,683 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 19:32:30,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 19:32:30,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 19:32:30,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-29 19:32:30,685 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 93 [2023-11-29 19:32:30,686 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 551 transitions, 4651 flow. Second operand has 7 states, 7 states have (on average 75.85714285714286) internal successors, (531), 7 states have internal predecessors, (531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 19:32:30,686 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 19:32:30,686 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 93 [2023-11-29 19:32:30,686 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 19:32:31,453 INFO L124 PetriNetUnfolderBase]: 2023/5582 cut-off events. [2023-11-29 19:32:31,453 INFO L125 PetriNetUnfolderBase]: For 1732/4324 co-relation queries the response was YES. [2023-11-29 19:32:31,559 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15554 conditions, 5582 events. 2023/5582 cut-off events. For 1732/4324 co-relation queries the response was YES. Maximal size of possible extension queue 745. Compared 61225 event pairs, 9 based on Foata normal form. 497/5745 useless extension candidates. Maximal degree in co-relation 15494. Up to 1732 conditions per place. [2023-11-29 19:32:31,572 INFO L140 encePairwiseOnDemand]: 83/93 looper letters, 22 selfloop transitions, 11 changer transitions 334/437 dead transitions. [2023-11-29 19:32:31,572 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 437 transitions, 3588 flow [2023-11-29 19:32:31,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-29 19:32:31,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-11-29 19:32:31,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1027 transitions. [2023-11-29 19:32:31,574 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.8494623655913979 [2023-11-29 19:32:31,575 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1027 transitions. [2023-11-29 19:32:31,575 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1027 transitions. [2023-11-29 19:32:31,575 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 19:32:31,575 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1027 transitions. [2023-11-29 19:32:31,577 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 79.0) internal successors, (1027), 13 states have internal predecessors, (1027), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 19:32:31,579 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 93.0) internal successors, (1302), 14 states have internal predecessors, (1302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 19:32:31,580 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 93.0) internal successors, (1302), 14 states have internal predecessors, (1302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 19:32:31,580 INFO L307 CegarLoopForPetriNet]: 84 programPoint places, 78 predicate places. [2023-11-29 19:32:31,580 INFO L500 AbstractCegarLoop]: Abstraction has has 162 places, 437 transitions, 3588 flow [2023-11-29 19:32:31,581 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 75.85714285714286) internal successors, (531), 7 states have internal predecessors, (531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 19:32:31,581 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 19:32:31,581 INFO L232 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 19:32:31,581 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-29 19:32:31,581 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)] === [2023-11-29 19:32:31,582 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 19:32:31,582 INFO L85 PathProgramCache]: Analyzing trace with hash 500316432, now seen corresponding path program 1 times [2023-11-29 19:32:31,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 19:32:31,582 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [759685862] [2023-11-29 19:32:31,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 19:32:31,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 19:32:31,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 19:32:31,711 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 19:32:31,711 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 19:32:31,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [759685862] [2023-11-29 19:32:31,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [759685862] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 19:32:31,712 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 19:32:31,712 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-29 19:32:31,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1042034553] [2023-11-29 19:32:31,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 19:32:31,712 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 19:32:31,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 19:32:31,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 19:32:31,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-11-29 19:32:31,713 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 93 [2023-11-29 19:32:31,714 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 437 transitions, 3588 flow. Second operand has 8 states, 8 states have (on average 75.75) internal successors, (606), 8 states have internal predecessors, (606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 19:32:31,714 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 19:32:31,714 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 93 [2023-11-29 19:32:31,714 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 19:32:32,337 INFO L124 PetriNetUnfolderBase]: 1816/4736 cut-off events. [2023-11-29 19:32:32,337 INFO L125 PetriNetUnfolderBase]: For 2284/7003 co-relation queries the response was YES. [2023-11-29 19:32:32,356 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15891 conditions, 4736 events. 1816/4736 cut-off events. For 2284/7003 co-relation queries the response was YES. Maximal size of possible extension queue 744. Compared 51533 event pairs, 3 based on Foata normal form. 691/5132 useless extension candidates. Maximal degree in co-relation 15827. Up to 1470 conditions per place. [2023-11-29 19:32:32,364 INFO L140 encePairwiseOnDemand]: 83/93 looper letters, 16 selfloop transitions, 14 changer transitions 172/270 dead transitions. [2023-11-29 19:32:32,365 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 270 transitions, 2192 flow [2023-11-29 19:32:32,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-29 19:32:32,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-11-29 19:32:32,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1248 transitions. [2023-11-29 19:32:32,368 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.8387096774193549 [2023-11-29 19:32:32,368 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1248 transitions. [2023-11-29 19:32:32,368 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1248 transitions. [2023-11-29 19:32:32,369 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 19:32:32,369 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1248 transitions. [2023-11-29 19:32:32,371 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 78.0) internal successors, (1248), 16 states have internal predecessors, (1248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 19:32:32,373 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 93.0) internal successors, (1581), 17 states have internal predecessors, (1581), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 19:32:32,374 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 93.0) internal successors, (1581), 17 states have internal predecessors, (1581), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 19:32:32,374 INFO L307 CegarLoopForPetriNet]: 84 programPoint places, 69 predicate places. [2023-11-29 19:32:32,375 INFO L500 AbstractCegarLoop]: Abstraction has has 153 places, 270 transitions, 2192 flow [2023-11-29 19:32:32,375 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 75.75) internal successors, (606), 8 states have internal predecessors, (606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 19:32:32,375 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 19:32:32,375 INFO L232 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 19:32:32,375 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-29 19:32:32,375 INFO L425 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-29 19:32:32,376 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 19:32:32,376 INFO L85 PathProgramCache]: Analyzing trace with hash -944265838, now seen corresponding path program 1 times [2023-11-29 19:32:32,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 19:32:32,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [822808772] [2023-11-29 19:32:32,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 19:32:32,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 19:32:32,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 19:32:32,510 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 19:32:32,510 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 19:32:32,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [822808772] [2023-11-29 19:32:32,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [822808772] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 19:32:32,511 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 19:32:32,511 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 19:32:32,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088620281] [2023-11-29 19:32:32,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 19:32:32,511 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 19:32:32,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 19:32:32,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 19:32:32,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-29 19:32:32,512 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 93 [2023-11-29 19:32:32,513 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 270 transitions, 2192 flow. Second operand has 7 states, 7 states have (on average 71.57142857142857) internal successors, (501), 7 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 19:32:32,513 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 19:32:32,513 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 93 [2023-11-29 19:32:32,513 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 19:32:33,073 INFO L124 PetriNetUnfolderBase]: 1806/4597 cut-off events. [2023-11-29 19:32:33,073 INFO L125 PetriNetUnfolderBase]: For 2322/3829 co-relation queries the response was YES. [2023-11-29 19:32:33,093 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15906 conditions, 4597 events. 1806/4597 cut-off events. For 2322/3829 co-relation queries the response was YES. Maximal size of possible extension queue 739. Compared 49642 event pairs, 2 based on Foata normal form. 23/4325 useless extension candidates. Maximal degree in co-relation 15835. Up to 1474 conditions per place. [2023-11-29 19:32:33,100 INFO L140 encePairwiseOnDemand]: 83/93 looper letters, 17 selfloop transitions, 3 changer transitions 183/269 dead transitions. [2023-11-29 19:32:33,100 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 269 transitions, 2410 flow [2023-11-29 19:32:33,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 19:32:33,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-29 19:32:33,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 728 transitions. [2023-11-29 19:32:33,103 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.7827956989247312 [2023-11-29 19:32:33,103 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 728 transitions. [2023-11-29 19:32:33,103 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 728 transitions. [2023-11-29 19:32:33,103 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 19:32:33,103 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 728 transitions. [2023-11-29 19:32:33,105 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 72.8) internal successors, (728), 10 states have internal predecessors, (728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 19:32:33,106 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 93.0) internal successors, (1023), 11 states have internal predecessors, (1023), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 19:32:33,106 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 93.0) internal successors, (1023), 11 states have internal predecessors, (1023), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 19:32:33,107 INFO L307 CegarLoopForPetriNet]: 84 programPoint places, 78 predicate places. [2023-11-29 19:32:33,107 INFO L500 AbstractCegarLoop]: Abstraction has has 162 places, 269 transitions, 2410 flow [2023-11-29 19:32:33,107 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 71.57142857142857) internal successors, (501), 7 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 19:32:33,108 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 19:32:33,108 INFO L232 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 19:32:33,108 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-29 19:32:33,108 INFO L425 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-29 19:32:33,108 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 19:32:33,108 INFO L85 PathProgramCache]: Analyzing trace with hash 779496914, now seen corresponding path program 2 times [2023-11-29 19:32:33,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 19:32:33,109 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1580968301] [2023-11-29 19:32:33,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 19:32:33,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 19:32:33,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 19:32:33,231 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 19:32:33,231 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 19:32:33,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1580968301] [2023-11-29 19:32:33,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1580968301] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 19:32:33,231 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 19:32:33,232 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 19:32:33,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839691346] [2023-11-29 19:32:33,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 19:32:33,232 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 19:32:33,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 19:32:33,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 19:32:33,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-29 19:32:33,233 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 93 [2023-11-29 19:32:33,234 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 269 transitions, 2410 flow. Second operand has 7 states, 7 states have (on average 75.85714285714286) internal successors, (531), 7 states have internal predecessors, (531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 19:32:33,234 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 19:32:33,234 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 93 [2023-11-29 19:32:33,234 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 19:32:33,895 INFO L124 PetriNetUnfolderBase]: 2380/6406 cut-off events. [2023-11-29 19:32:33,896 INFO L125 PetriNetUnfolderBase]: For 3611/5257 co-relation queries the response was YES. [2023-11-29 19:32:33,936 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21648 conditions, 6406 events. 2380/6406 cut-off events. For 3611/5257 co-relation queries the response was YES. Maximal size of possible extension queue 962. Compared 73477 event pairs, 2 based on Foata normal form. 20/6034 useless extension candidates. Maximal degree in co-relation 21572. Up to 1926 conditions per place. [2023-11-29 19:32:33,943 INFO L140 encePairwiseOnDemand]: 87/93 looper letters, 0 selfloop transitions, 0 changer transitions 296/296 dead transitions. [2023-11-29 19:32:33,943 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 296 transitions, 3034 flow [2023-11-29 19:32:33,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 19:32:33,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-29 19:32:33,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 538 transitions. [2023-11-29 19:32:33,944 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.82642089093702 [2023-11-29 19:32:33,945 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 538 transitions. [2023-11-29 19:32:33,945 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 538 transitions. [2023-11-29 19:32:33,945 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 19:32:33,945 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 538 transitions. [2023-11-29 19:32:33,946 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 76.85714285714286) internal successors, (538), 7 states have internal predecessors, (538), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 19:32:33,947 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 93.0) internal successors, (744), 8 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 19:32:33,947 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 93.0) internal successors, (744), 8 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 19:32:33,948 INFO L307 CegarLoopForPetriNet]: 84 programPoint places, 82 predicate places. [2023-11-29 19:32:33,948 INFO L500 AbstractCegarLoop]: Abstraction has has 166 places, 296 transitions, 3034 flow [2023-11-29 19:32:33,948 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 75.85714285714286) internal successors, (531), 7 states have internal predecessors, (531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 19:32:33,954 INFO L143 wickiGriesTestDumper]: Dumping Owicki-Gries test to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/safe005_tso.i_BEv2_AllErrorsAtOnce [2023-11-29 19:32:34,026 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2023-11-29 19:32:34,027 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2023-11-29 19:32:34,027 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-11-29 19:32:34,027 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-11-29 19:32:34,027 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-29 19:32:34,028 INFO L457 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 19:32:34,031 INFO L222 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-29 19:32:34,031 INFO L172 ceAbstractionStarter]: Computing trace abstraction results [2023-11-29 19:32:34,036 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 07:32:34 BasicIcfg [2023-11-29 19:32:34,036 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-29 19:32:34,037 INFO L158 Benchmark]: Toolchain (without parser) took 9427.33ms. Allocated memory was 348.1MB in the beginning and 784.3MB in the end (delta: 436.2MB). Free memory was 297.3MB in the beginning and 558.2MB in the end (delta: -261.0MB). Peak memory consumption was 176.1MB. Max. memory is 16.0GB. [2023-11-29 19:32:34,037 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 348.1MB. Free memory is still 296.6MB. There was no memory consumed. Max. memory is 16.0GB. [2023-11-29 19:32:34,037 INFO L158 Benchmark]: CACSL2BoogieTranslator took 489.05ms. Allocated memory is still 348.1MB. Free memory was 297.3MB in the beginning and 276.3MB in the end (delta: 20.9MB). Peak memory consumption was 21.0MB. Max. memory is 16.0GB. [2023-11-29 19:32:34,037 INFO L158 Benchmark]: Boogie Procedure Inliner took 55.93ms. Allocated memory is still 348.1MB. Free memory was 276.3MB in the beginning and 274.4MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-11-29 19:32:34,038 INFO L158 Benchmark]: Boogie Preprocessor took 34.50ms. Allocated memory is still 348.1MB. Free memory was 274.4MB in the beginning and 272.8MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-11-29 19:32:34,038 INFO L158 Benchmark]: RCFGBuilder took 321.60ms. Allocated memory is still 348.1MB. Free memory was 272.8MB in the beginning and 258.1MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. [2023-11-29 19:32:34,038 INFO L158 Benchmark]: TraceAbstraction took 8510.66ms. Allocated memory was 348.1MB in the beginning and 784.3MB in the end (delta: 436.2MB). Free memory was 257.5MB in the beginning and 558.2MB in the end (delta: -300.7MB). Peak memory consumption was 136.2MB. Max. memory is 16.0GB. [2023-11-29 19:32:34,039 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 348.1MB. Free memory is still 296.6MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 489.05ms. Allocated memory is still 348.1MB. Free memory was 297.3MB in the beginning and 276.3MB in the end (delta: 20.9MB). Peak memory consumption was 21.0MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 55.93ms. Allocated memory is still 348.1MB. Free memory was 276.3MB in the beginning and 274.4MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 34.50ms. Allocated memory is still 348.1MB. Free memory was 274.4MB in the beginning and 272.8MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 321.60ms. Allocated memory is still 348.1MB. Free memory was 272.8MB in the beginning and 258.1MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. * TraceAbstraction took 8510.66ms. Allocated memory was 348.1MB in the beginning and 784.3MB in the end (delta: 436.2MB). Free memory was 257.5MB in the beginning and 558.2MB in the end (delta: -300.7MB). Peak memory consumption was 136.2MB. Max. memory is 16.0GB. * 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, 120 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: 8.4s, OverallIterations: 9, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 5.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 496 SdHoareTripleChecker+Valid, 0.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 496 mSDsluCounter, 578 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 439 mSDsCounter, 42 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 706 IncrementalHoareTripleChecker+Invalid, 748 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 42 mSolverCounterUnsat, 139 mSDtfsCounter, 706 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 142 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 124 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 310 ImplicationChecksByTransitivity, 1.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=5129occurred in iteration=4, InterpolantAutomatonStates: 120, 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, 0.2s SatisfiabilityAnalysisTime, 1.9s InterpolantComputationTime, 538 NumberOfCodeBlocks, 538 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 529 ConstructedInterpolants, 0 QuantifiedInterpolants, 2397 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 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! [2023-11-29 19:32:34,059 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...