/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/safe013_tso.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-wip.dk.empire-owicki-175f719-m [2023-11-29 19:32:49,449 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 19:32:49,531 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 19:32:49,559 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 19:32:49,560 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 19:32:49,560 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 19:32:49,561 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 19:32:49,561 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 19:32:49,561 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 19:32:49,565 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 19:32:49,566 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 19:32:49,566 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 19:32:49,566 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 19:32:49,567 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 19:32:49,567 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 19:32:49,568 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 19:32:49,568 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 19:32:49,568 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 19:32:49,568 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 19:32:49,568 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 19:32:49,569 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 19:32:49,569 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 19:32:49,570 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 19:32:49,570 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-11-29 19:32:49,570 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 19:32:49,570 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-29 19:32:49,570 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 19:32:49,571 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 19:32:49,571 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 19:32:49,571 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 19:32:49,572 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 19:32:49,572 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 19:32:49,572 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 19:32:49,572 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> true [2023-11-29 19:32:49,786 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 19:32:49,808 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 19:32:49,810 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 19:32:49,810 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 19:32:49,811 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 19:32:49,811 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe013_tso.i [2023-11-29 19:32:50,921 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 19:32:51,149 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 19:32:51,150 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe013_tso.i [2023-11-29 19:32:51,162 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2c06f209d/8c2eba1151014f7c9dbf5507cedf3dad/FLAGb0fc7b609 [2023-11-29 19:32:51,175 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2c06f209d/8c2eba1151014f7c9dbf5507cedf3dad [2023-11-29 19:32:51,177 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 19:32:51,178 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-11-29 19:32:51,179 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 19:32:51,179 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 19:32:51,187 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 19:32:51,188 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 07:32:51" (1/1) ... [2023-11-29 19:32:51,189 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@b8cc194 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:32:51, skipping insertion in model container [2023-11-29 19:32:51,189 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 07:32:51" (1/1) ... [2023-11-29 19:32:51,223 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 19:32:51,357 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/safe013_tso.i[945,958] [2023-11-29 19:32:51,520 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 19:32:51,530 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 19:32:51,544 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/safe013_tso.i[945,958] [2023-11-29 19:32:51,578 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 19:32:51,602 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 19:32:51,602 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 19:32:51,607 INFO L206 MainTranslator]: Completed translation [2023-11-29 19:32:51,607 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:32:51 WrapperNode [2023-11-29 19:32:51,607 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 19:32:51,608 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 19:32:51,608 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 19:32:51,608 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 19:32:51,614 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:32:51" (1/1) ... [2023-11-29 19:32:51,624 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:32:51" (1/1) ... [2023-11-29 19:32:51,642 INFO L138 Inliner]: procedures = 176, calls = 55, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 70 [2023-11-29 19:32:51,643 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 19:32:51,643 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 19:32:51,643 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 19:32:51,643 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 19:32:51,650 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:32:51" (1/1) ... [2023-11-29 19:32:51,651 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:32:51" (1/1) ... [2023-11-29 19:32:51,654 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:32:51" (1/1) ... [2023-11-29 19:32:51,654 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:32:51" (1/1) ... [2023-11-29 19:32:51,659 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:32:51" (1/1) ... [2023-11-29 19:32:51,660 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:32:51" (1/1) ... [2023-11-29 19:32:51,662 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:32:51" (1/1) ... [2023-11-29 19:32:51,663 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:32:51" (1/1) ... [2023-11-29 19:32:51,665 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 19:32:51,666 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 19:32:51,666 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 19:32:51,666 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 19:32:51,667 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:32:51" (1/1) ... [2023-11-29 19:32:51,671 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-29 19:32:51,682 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-29 19:32:51,694 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 19:32:51,729 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 19:32:51,736 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-29 19:32:51,736 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-29 19:32:51,737 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 19:32:51,737 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-29 19:32:51,737 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-29 19:32:51,737 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-11-29 19:32:51,738 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-11-29 19:32:51,738 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-11-29 19:32:51,738 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-11-29 19:32:51,738 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-11-29 19:32:51,738 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-11-29 19:32:51,738 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-29 19:32:51,739 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-29 19:32:51,739 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 19:32:51,739 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 19:32:51,740 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 19:32:51,886 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 19:32:51,887 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 19:32:52,025 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 19:32:52,034 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 19:32:52,034 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-29 19:32:52,035 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 07:32:52 BoogieIcfgContainer [2023-11-29 19:32:52,035 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 19:32:52,037 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 19:32:52,037 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 19:32:52,040 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 19:32:52,040 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 07:32:51" (1/3) ... [2023-11-29 19:32:52,041 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f01e1ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 07:32:52, skipping insertion in model container [2023-11-29 19:32:52,041 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:32:51" (2/3) ... [2023-11-29 19:32:52,041 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f01e1ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 07:32:52, skipping insertion in model container [2023-11-29 19:32:52,041 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 07:32:52" (3/3) ... [2023-11-29 19:32:52,042 INFO L112 eAbstractionObserver]: Analyzing ICFG safe013_tso.i [2023-11-29 19:32:52,057 INFO L197 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 19:32:52,058 INFO L156 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-29 19:32:52,058 INFO L508 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-29 19:32:52,105 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-29 19:32:52,135 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 101 places, 93 transitions, 198 flow [2023-11-29 19:32:52,173 INFO L124 PetriNetUnfolderBase]: 2/90 cut-off events. [2023-11-29 19:32:52,174 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-29 19:32:52,178 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 19:32:52,178 INFO L82 GeneralOperation]: Start removeDead. Operand has 101 places, 93 transitions, 198 flow [2023-11-29 19:32:52,181 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 84 places, 75 transitions, 159 flow [2023-11-29 19:32:52,189 INFO L361 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 19:32:52,194 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;@45ed6cef, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 19:32:52,195 INFO L363 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-11-29 19:32:52,220 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-29 19:32:52,220 INFO L124 PetriNetUnfolderBase]: 1/74 cut-off events. [2023-11-29 19:32:52,220 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-29 19:32:52,220 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 19:32:52,221 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 19:32:52,221 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 19:32:52,229 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 19:32:52,229 INFO L85 PathProgramCache]: Analyzing trace with hash -1369602752, now seen corresponding path program 1 times [2023-11-29 19:32:52,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 19:32:52,238 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [155502554] [2023-11-29 19:32:52,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 19:32:52,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 19:32:52,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 19:32:53,011 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 19:32:53,011 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 19:32:53,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [155502554] [2023-11-29 19:32:53,012 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [155502554] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 19:32:53,012 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 19:32:53,013 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 19:32:53,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607644096] [2023-11-29 19:32:53,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 19:32:53,026 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 19:32:53,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 19:32:53,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 19:32:53,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-29 19:32:53,063 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 93 [2023-11-29 19:32:53,069 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 75 transitions, 159 flow. Second operand has 7 states, 7 states have (on average 72.71428571428571) internal successors, (509), 7 states have internal predecessors, (509), 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 19:32:53,069 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 19:32:53,069 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 93 [2023-11-29 19:32:53,070 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 19:32:53,439 INFO L124 PetriNetUnfolderBase]: 91/351 cut-off events. [2023-11-29 19:32:53,439 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-11-29 19:32:53,442 INFO L83 FinitePrefix]: Finished finitePrefix Result has 566 conditions, 351 events. 91/351 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1665 event pairs, 14 based on Foata normal form. 14/352 useless extension candidates. Maximal degree in co-relation 533. Up to 60 conditions per place. [2023-11-29 19:32:53,446 INFO L140 encePairwiseOnDemand]: 83/93 looper letters, 19 selfloop transitions, 5 changer transitions 35/117 dead transitions. [2023-11-29 19:32:53,446 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 117 transitions, 361 flow [2023-11-29 19:32:53,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-29 19:32:53,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-11-29 19:32:53,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 988 transitions. [2023-11-29 19:32:53,468 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.8172043010752689 [2023-11-29 19:32:53,469 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 988 transitions. [2023-11-29 19:32:53,469 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 988 transitions. [2023-11-29 19:32:53,472 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 19:32:53,474 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 988 transitions. [2023-11-29 19:32:53,479 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 76.0) internal successors, (988), 13 states have internal predecessors, (988), 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 19:32:53,484 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 19:32:53,485 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 19:32:53,488 INFO L307 CegarLoopForPetriNet]: 84 programPoint places, 12 predicate places. [2023-11-29 19:32:53,488 INFO L500 AbstractCegarLoop]: Abstraction has has 96 places, 117 transitions, 361 flow [2023-11-29 19:32:53,488 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 72.71428571428571) internal successors, (509), 7 states have internal predecessors, (509), 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 19:32:53,488 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 19:32:53,488 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] [2023-11-29 19:32:53,489 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-29 19:32:53,489 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 19:32:53,489 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 19:32:53,489 INFO L85 PathProgramCache]: Analyzing trace with hash 426630817, now seen corresponding path program 1 times [2023-11-29 19:32:53,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 19:32:53,489 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [788576015] [2023-11-29 19:32:53,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 19:32:53,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 19:32:53,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 19:32:53,711 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 19:32:53,711 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 19:32:53,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [788576015] [2023-11-29 19:32:53,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [788576015] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 19:32:53,712 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 19:32:53,712 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 19:32:53,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037309620] [2023-11-29 19:32:53,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 19:32:53,714 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 19:32:53,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 19:32:53,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 19:32:53,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-29 19:32:53,716 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 93 [2023-11-29 19:32:53,717 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 117 transitions, 361 flow. Second operand has 7 states, 7 states have (on average 72.85714285714286) internal successors, (510), 7 states have internal predecessors, (510), 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 19:32:53,717 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 19:32:53,717 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 93 [2023-11-29 19:32:53,717 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 19:32:53,991 INFO L124 PetriNetUnfolderBase]: 123/518 cut-off events. [2023-11-29 19:32:53,991 INFO L125 PetriNetUnfolderBase]: For 49/171 co-relation queries the response was YES. [2023-11-29 19:32:53,994 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1094 conditions, 518 events. 123/518 cut-off events. For 49/171 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 3205 event pairs, 5 based on Foata normal form. 12/521 useless extension candidates. Maximal degree in co-relation 1055. Up to 91 conditions per place. [2023-11-29 19:32:53,996 INFO L140 encePairwiseOnDemand]: 84/93 looper letters, 20 selfloop transitions, 8 changer transitions 100/186 dead transitions. [2023-11-29 19:32:53,996 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 186 transitions, 899 flow [2023-11-29 19:32:53,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-29 19:32:53,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-11-29 19:32:53,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 987 transitions. [2023-11-29 19:32:53,999 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.8163771712158809 [2023-11-29 19:32:53,999 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 987 transitions. [2023-11-29 19:32:53,999 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 987 transitions. [2023-11-29 19:32:54,000 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 19:32:54,000 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 987 transitions. [2023-11-29 19:32:54,002 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 75.92307692307692) internal successors, (987), 13 states have internal predecessors, (987), 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 19:32:54,005 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 19:32:54,005 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 19:32:54,006 INFO L307 CegarLoopForPetriNet]: 84 programPoint places, 24 predicate places. [2023-11-29 19:32:54,006 INFO L500 AbstractCegarLoop]: Abstraction has has 108 places, 186 transitions, 899 flow [2023-11-29 19:32:54,007 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 72.85714285714286) internal successors, (510), 7 states have internal predecessors, (510), 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 19:32:54,007 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 19:32:54,007 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 19:32:54,007 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-29 19:32:54,008 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 19:32:54,008 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 19:32:54,008 INFO L85 PathProgramCache]: Analyzing trace with hash 24986082, now seen corresponding path program 1 times [2023-11-29 19:32:54,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 19:32:54,008 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1135701259] [2023-11-29 19:32:54,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 19:32:54,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 19:32:54,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 19:32:54,217 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 19:32:54,217 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 19:32:54,217 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1135701259] [2023-11-29 19:32:54,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1135701259] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 19:32:54,218 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 19:32:54,218 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 19:32:54,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072365162] [2023-11-29 19:32:54,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 19:32:54,220 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 19:32:54,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 19:32:54,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 19:32:54,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-29 19:32:54,225 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 93 [2023-11-29 19:32:54,226 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 186 transitions, 899 flow. Second operand has 7 states, 7 states have (on average 75.71428571428571) internal successors, (530), 7 states have internal predecessors, (530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 19:32:54,226 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 19:32:54,226 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 93 [2023-11-29 19:32:54,226 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 19:32:54,560 INFO L124 PetriNetUnfolderBase]: 404/1303 cut-off events. [2023-11-29 19:32:54,561 INFO L125 PetriNetUnfolderBase]: For 397/1019 co-relation queries the response was YES. [2023-11-29 19:32:54,568 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3277 conditions, 1303 events. 404/1303 cut-off events. For 397/1019 co-relation queries the response was YES. Maximal size of possible extension queue 156. Compared 10768 event pairs, 14 based on Foata normal form. 14/1293 useless extension candidates. Maximal degree in co-relation 3233. Up to 219 conditions per place. [2023-11-29 19:32:54,571 INFO L140 encePairwiseOnDemand]: 85/93 looper letters, 17 selfloop transitions, 5 changer transitions 197/285 dead transitions. [2023-11-29 19:32:54,572 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 285 transitions, 1817 flow [2023-11-29 19:32:54,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-29 19:32:54,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-11-29 19:32:54,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 999 transitions. [2023-11-29 19:32:54,575 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.826302729528536 [2023-11-29 19:32:54,575 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 999 transitions. [2023-11-29 19:32:54,575 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 999 transitions. [2023-11-29 19:32:54,576 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 19:32:54,576 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 999 transitions. [2023-11-29 19:32:54,578 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 76.84615384615384) internal successors, (999), 13 states have internal predecessors, (999), 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 19:32:54,580 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 19:32:54,580 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 19:32:54,582 INFO L307 CegarLoopForPetriNet]: 84 programPoint places, 36 predicate places. [2023-11-29 19:32:54,582 INFO L500 AbstractCegarLoop]: Abstraction has has 120 places, 285 transitions, 1817 flow [2023-11-29 19:32:54,582 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 75.71428571428571) internal successors, (530), 7 states have internal predecessors, (530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 19:32:54,582 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 19:32:54,582 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 19:32:54,583 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-29 19:32:54,583 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 19:32:54,584 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 19:32:54,584 INFO L85 PathProgramCache]: Analyzing trace with hash -721647555, now seen corresponding path program 1 times [2023-11-29 19:32:54,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 19:32:54,631 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [724826892] [2023-11-29 19:32:54,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 19:32:54,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 19:32:54,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 19:32:54,777 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 19:32:54,777 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 19:32:54,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [724826892] [2023-11-29 19:32:54,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [724826892] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 19:32:54,778 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 19:32:54,778 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 19:32:54,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [657286714] [2023-11-29 19:32:54,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 19:32:54,782 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 19:32:54,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 19:32:54,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 19:32:54,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-29 19:32:54,784 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 93 [2023-11-29 19:32:54,784 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 285 transitions, 1817 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 19:32:54,785 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 19:32:54,785 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 93 [2023-11-29 19:32:54,785 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 19:32:55,136 INFO L124 PetriNetUnfolderBase]: 1004/2765 cut-off events. [2023-11-29 19:32:55,136 INFO L125 PetriNetUnfolderBase]: For 604/714 co-relation queries the response was YES. [2023-11-29 19:32:55,147 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6439 conditions, 2765 events. 1004/2765 cut-off events. For 604/714 co-relation queries the response was YES. Maximal size of possible extension queue 208. Compared 25453 event pairs, 34 based on Foata normal form. 15/2658 useless extension candidates. Maximal degree in co-relation 6391. Up to 679 conditions per place. [2023-11-29 19:32:55,156 INFO L140 encePairwiseOnDemand]: 83/93 looper letters, 34 selfloop transitions, 17 changer transitions 102/290 dead transitions. [2023-11-29 19:32:55,156 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 290 transitions, 1797 flow [2023-11-29 19:32:55,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 19:32:55,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-29 19:32:55,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 790 transitions. [2023-11-29 19:32:55,159 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.8494623655913979 [2023-11-29 19:32:55,159 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 790 transitions. [2023-11-29 19:32:55,159 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 790 transitions. [2023-11-29 19:32:55,160 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 19:32:55,160 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 790 transitions. [2023-11-29 19:32:55,162 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 19:32:55,163 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 19:32:55,165 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 19:32:55,166 INFO L307 CegarLoopForPetriNet]: 84 programPoint places, 45 predicate places. [2023-11-29 19:32:55,166 INFO L500 AbstractCegarLoop]: Abstraction has has 129 places, 290 transitions, 1797 flow [2023-11-29 19:32:55,167 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 19:32:55,167 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 19:32:55,167 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] [2023-11-29 19:32:55,167 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-29 19:32:55,167 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 19:32:55,168 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 19:32:55,168 INFO L85 PathProgramCache]: Analyzing trace with hash 1808114748, now seen corresponding path program 1 times [2023-11-29 19:32:55,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 19:32:55,169 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [942138664] [2023-11-29 19:32:55,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 19:32:55,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 19:32:55,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 19:32:55,324 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 19:32:55,324 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 19:32:55,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [942138664] [2023-11-29 19:32:55,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [942138664] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 19:32:55,324 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 19:32:55,324 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 19:32:55,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411199731] [2023-11-29 19:32:55,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 19:32:55,325 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 19:32:55,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 19:32:55,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 19:32:55,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-29 19:32:55,327 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 93 [2023-11-29 19:32:55,327 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 290 transitions, 1797 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 19:32:55,327 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 19:32:55,327 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 93 [2023-11-29 19:32:55,328 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 19:32:55,608 INFO L124 PetriNetUnfolderBase]: 625/1739 cut-off events. [2023-11-29 19:32:55,608 INFO L125 PetriNetUnfolderBase]: For 507/894 co-relation queries the response was YES. [2023-11-29 19:32:55,614 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4704 conditions, 1739 events. 625/1739 cut-off events. For 507/894 co-relation queries the response was YES. Maximal size of possible extension queue 202. Compared 14541 event pairs, 3 based on Foata normal form. 93/1755 useless extension candidates. Maximal degree in co-relation 4652. Up to 515 conditions per place. [2023-11-29 19:32:55,619 INFO L140 encePairwiseOnDemand]: 83/93 looper letters, 36 selfloop transitions, 38 changer transitions 84/228 dead transitions. [2023-11-29 19:32:55,619 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 228 transitions, 1408 flow [2023-11-29 19:32:55,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-29 19:32:55,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-11-29 19:32:55,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1027 transitions. [2023-11-29 19:32:55,622 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.8494623655913979 [2023-11-29 19:32:55,622 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1027 transitions. [2023-11-29 19:32:55,622 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1027 transitions. [2023-11-29 19:32:55,623 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 19:32:55,623 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1027 transitions. [2023-11-29 19:32:55,625 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 19:32:55,628 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 19:32:55,629 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 19:32:55,631 INFO L307 CegarLoopForPetriNet]: 84 programPoint places, 54 predicate places. [2023-11-29 19:32:55,631 INFO L500 AbstractCegarLoop]: Abstraction has has 138 places, 228 transitions, 1408 flow [2023-11-29 19:32:55,632 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 19:32:55,632 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 19:32:55,632 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 19:32:55,632 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-29 19:32:55,632 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 19:32:55,633 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 19:32:55,633 INFO L85 PathProgramCache]: Analyzing trace with hash 1768793736, now seen corresponding path program 1 times [2023-11-29 19:32:55,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 19:32:55,634 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1174452513] [2023-11-29 19:32:55,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 19:32:55,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 19:32:55,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 19:32:55,820 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 19:32:55,821 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 19:32:55,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1174452513] [2023-11-29 19:32:55,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1174452513] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 19:32:55,821 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 19:32:55,821 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-29 19:32:55,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805887494] [2023-11-29 19:32:55,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 19:32:55,822 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 19:32:55,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 19:32:55,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 19:32:55,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-11-29 19:32:55,823 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 93 [2023-11-29 19:32:55,824 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 228 transitions, 1408 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 19:32:55,824 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 19:32:55,824 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 93 [2023-11-29 19:32:55,824 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 19:32:56,114 INFO L124 PetriNetUnfolderBase]: 550/1463 cut-off events. [2023-11-29 19:32:56,114 INFO L125 PetriNetUnfolderBase]: For 704/1812 co-relation queries the response was YES. [2023-11-29 19:32:56,119 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4901 conditions, 1463 events. 550/1463 cut-off events. For 704/1812 co-relation queries the response was YES. Maximal size of possible extension queue 208. Compared 12146 event pairs, 2 based on Foata normal form. 145/1531 useless extension candidates. Maximal degree in co-relation 4845. Up to 431 conditions per place. [2023-11-29 19:32:56,122 INFO L140 encePairwiseOnDemand]: 83/93 looper letters, 30 selfloop transitions, 40 changer transitions 69/202 dead transitions. [2023-11-29 19:32:56,122 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 202 transitions, 1438 flow [2023-11-29 19:32:56,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-29 19:32:56,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-11-29 19:32:56,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1248 transitions. [2023-11-29 19:32:56,126 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.8387096774193549 [2023-11-29 19:32:56,126 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1248 transitions. [2023-11-29 19:32:56,126 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1248 transitions. [2023-11-29 19:32:56,127 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 19:32:56,127 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1248 transitions. [2023-11-29 19:32:56,129 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 19:32:56,132 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 19:32:56,132 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 19:32:56,133 INFO L307 CegarLoopForPetriNet]: 84 programPoint places, 54 predicate places. [2023-11-29 19:32:56,133 INFO L500 AbstractCegarLoop]: Abstraction has has 138 places, 202 transitions, 1438 flow [2023-11-29 19:32:56,133 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 19:32:56,133 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 19:32:56,134 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 19:32:56,134 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-29 19:32:56,134 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 19:32:56,134 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 19:32:56,134 INFO L85 PathProgramCache]: Analyzing trace with hash -1380709750, now seen corresponding path program 1 times [2023-11-29 19:32:56,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 19:32:56,135 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1289058950] [2023-11-29 19:32:56,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 19:32:56,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 19:32:56,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 19:32:56,278 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 19:32:56,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 19:32:56,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1289058950] [2023-11-29 19:32:56,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1289058950] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 19:32:56,279 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 19:32:56,279 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 19:32:56,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1929135815] [2023-11-29 19:32:56,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 19:32:56,279 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 19:32:56,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 19:32:56,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 19:32:56,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-29 19:32:56,281 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 93 [2023-11-29 19:32:56,281 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 202 transitions, 1438 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 19:32:56,281 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 19:32:56,282 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 93 [2023-11-29 19:32:56,282 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 19:32:56,551 INFO L124 PetriNetUnfolderBase]: 893/2289 cut-off events. [2023-11-29 19:32:56,552 INFO L125 PetriNetUnfolderBase]: For 1464/2041 co-relation queries the response was YES. [2023-11-29 19:32:56,559 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7819 conditions, 2289 events. 893/2289 cut-off events. For 1464/2041 co-relation queries the response was YES. Maximal size of possible extension queue 339. Compared 21120 event pairs, 1 based on Foata normal form. 13/2159 useless extension candidates. Maximal degree in co-relation 7758. Up to 705 conditions per place. [2023-11-29 19:32:56,563 INFO L140 encePairwiseOnDemand]: 87/93 looper letters, 0 selfloop transitions, 0 changer transitions 223/223 dead transitions. [2023-11-29 19:32:56,564 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 223 transitions, 1794 flow [2023-11-29 19:32:56,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 19:32:56,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-29 19:32:56,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 538 transitions. [2023-11-29 19:32:56,565 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.82642089093702 [2023-11-29 19:32:56,565 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 538 transitions. [2023-11-29 19:32:56,565 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 538 transitions. [2023-11-29 19:32:56,566 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 19:32:56,566 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 538 transitions. [2023-11-29 19:32:56,567 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 19:32:56,568 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 19:32:56,569 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 19:32:56,569 INFO L307 CegarLoopForPetriNet]: 84 programPoint places, 58 predicate places. [2023-11-29 19:32:56,569 INFO L500 AbstractCegarLoop]: Abstraction has has 142 places, 223 transitions, 1794 flow [2023-11-29 19:32:56,570 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 19:32:56,574 INFO L143 wickiGriesTestDumper]: Dumping Owicki-Gries test to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/safe013_tso.i_BEv2_AllErrorsAtOnce [2023-11-29 19:32:56,604 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2023-11-29 19:32:56,605 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2023-11-29 19:32:56,605 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-11-29 19:32:56,605 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-11-29 19:32:56,605 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-29 19:32:56,606 INFO L457 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2023-11-29 19:32:56,608 INFO L222 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-29 19:32:56,608 INFO L172 ceAbstractionStarter]: Computing trace abstraction results [2023-11-29 19:32:56,614 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 07:32:56 BasicIcfg [2023-11-29 19:32:56,614 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-29 19:32:56,614 INFO L158 Benchmark]: Toolchain (without parser) took 5436.60ms. Allocated memory was 352.3MB in the beginning and 528.5MB in the end (delta: 176.2MB). Free memory was 295.1MB in the beginning and 210.4MB in the end (delta: 84.7MB). Peak memory consumption was 263.1MB. Max. memory is 16.0GB. [2023-11-29 19:32:56,615 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 352.3MB. Free memory was 302.5MB in the beginning and 302.3MB in the end (delta: 153.9kB). There was no memory consumed. Max. memory is 16.0GB. [2023-11-29 19:32:56,615 INFO L158 Benchmark]: CACSL2BoogieTranslator took 428.61ms. Allocated memory is still 352.3MB. Free memory was 294.8MB in the beginning and 274.5MB in the end (delta: 20.4MB). Peak memory consumption was 21.0MB. Max. memory is 16.0GB. [2023-11-29 19:32:56,615 INFO L158 Benchmark]: Boogie Procedure Inliner took 34.51ms. Allocated memory is still 352.3MB. Free memory was 274.2MB in the beginning and 272.3MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-11-29 19:32:56,615 INFO L158 Benchmark]: Boogie Preprocessor took 21.80ms. Allocated memory is still 352.3MB. Free memory was 272.3MB in the beginning and 270.9MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-11-29 19:32:56,616 INFO L158 Benchmark]: RCFGBuilder took 369.93ms. Allocated memory was 352.3MB in the beginning and 528.5MB in the end (delta: 176.2MB). Free memory was 270.9MB in the beginning and 487.3MB in the end (delta: -216.4MB). Peak memory consumption was 14.6MB. Max. memory is 16.0GB. [2023-11-29 19:32:56,616 INFO L158 Benchmark]: TraceAbstraction took 4576.52ms. Allocated memory is still 528.5MB. Free memory was 486.2MB in the beginning and 210.4MB in the end (delta: 275.8MB). Peak memory consumption was 275.8MB. Max. memory is 16.0GB. [2023-11-29 19:32:56,617 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 352.3MB. Free memory was 302.5MB in the beginning and 302.3MB in the end (delta: 153.9kB). There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 428.61ms. Allocated memory is still 352.3MB. Free memory was 294.8MB in the beginning and 274.5MB in the end (delta: 20.4MB). Peak memory consumption was 21.0MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 34.51ms. Allocated memory is still 352.3MB. Free memory was 274.2MB in the beginning and 272.3MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 21.80ms. Allocated memory is still 352.3MB. Free memory was 272.3MB in the beginning and 270.9MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 369.93ms. Allocated memory was 352.3MB in the beginning and 528.5MB in the end (delta: 176.2MB). Free memory was 270.9MB in the beginning and 487.3MB in the end (delta: -216.4MB). Peak memory consumption was 14.6MB. Max. memory is 16.0GB. * TraceAbstraction took 4576.52ms. Allocated memory is still 528.5MB. Free memory was 486.2MB in the beginning and 210.4MB in the end (delta: 275.8MB). Peak memory consumption was 275.8MB. 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: 4.5s, OverallIterations: 7, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 2.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 337 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 337 mSDsluCounter, 390 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 303 mSDsCounter, 17 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 454 IncrementalHoareTripleChecker+Invalid, 471 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 17 mSolverCounterUnsat, 87 mSDtfsCounter, 454 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 102 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 160 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1817occurred in iteration=3, InterpolantAutomatonStates: 85, 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, 1.5s InterpolantComputationTime, 407 NumberOfCodeBlocks, 407 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 400 ConstructedInterpolants, 0 QuantifiedInterpolants, 1396 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-11-29 19:32:56,635 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...