/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe.epf --rcfgbuilder.only.consider.context.switches.at.boundaries.of.atomic.blocks true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe015_pso.oepc_pso.opt_tso.oepc_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-wip.dk.datarace-free-lbe-02cf818-m [2023-11-17 11:28:57,383 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-17 11:28:57,453 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-SemanticLbe.epf [2023-11-17 11:28:57,476 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-17 11:28:57,476 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-17 11:28:57,477 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-17 11:28:57,477 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-17 11:28:57,477 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-17 11:28:57,478 INFO L153 SettingsManager]: * Use SBE=true [2023-11-17 11:28:57,481 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-17 11:28:57,481 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-17 11:28:57,482 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-17 11:28:57,482 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-17 11:28:57,483 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-17 11:28:57,483 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-17 11:28:57,483 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-17 11:28:57,483 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-17 11:28:57,483 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-17 11:28:57,484 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-17 11:28:57,484 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-17 11:28:57,484 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-17 11:28:57,485 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-17 11:28:57,485 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-17 11:28:57,485 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-11-17 11:28:57,485 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-17 11:28:57,486 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-17 11:28:57,487 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-17 11:28:57,487 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-17 11:28:57,487 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-17 11:28:57,487 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-17 11:28:57,488 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-17 11:28:57,488 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-17 11:28:57,488 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Only consider context switches at boundaries of atomic blocks -> true [2023-11-17 11:28:57,723 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-17 11:28:57,743 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-17 11:28:57,744 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-17 11:28:57,746 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-17 11:28:57,747 INFO L274 PluginConnector]: CDTParser initialized [2023-11-17 11:28:57,748 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe015_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2023-11-17 11:28:58,865 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-17 11:28:59,089 INFO L384 CDTParser]: Found 1 translation units. [2023-11-17 11:28:59,093 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe015_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2023-11-17 11:28:59,107 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b1dcf4eff/22b29fc027b34b40bae18617ee790248/FLAG6e4da85d2 [2023-11-17 11:28:59,118 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b1dcf4eff/22b29fc027b34b40bae18617ee790248 [2023-11-17 11:28:59,120 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-17 11:28:59,121 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-11-17 11:28:59,122 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-17 11:28:59,122 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-17 11:28:59,125 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-17 11:28:59,126 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 11:28:59" (1/1) ... [2023-11-17 11:28:59,126 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1dfe3a5b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:28:59, skipping insertion in model container [2023-11-17 11:28:59,127 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 11:28:59" (1/1) ... [2023-11-17 11:28:59,177 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-17 11:28:59,283 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/safe015_pso.oepc_pso.opt_tso.oepc_tso.opt.i[975,988] [2023-11-17 11:28:59,426 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-17 11:28:59,436 INFO L202 MainTranslator]: Completed pre-run [2023-11-17 11:28:59,447 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/safe015_pso.oepc_pso.opt_tso.oepc_tso.opt.i[975,988] [2023-11-17 11:28:59,479 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-17 11:28:59,508 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-17 11:28:59,508 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-17 11:28:59,513 INFO L206 MainTranslator]: Completed translation [2023-11-17 11:28:59,515 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:28:59 WrapperNode [2023-11-17 11:28:59,516 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-17 11:28:59,517 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-17 11:28:59,517 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-17 11:28:59,517 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-17 11:28:59,523 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:28:59" (1/1) ... [2023-11-17 11:28:59,552 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:28:59" (1/1) ... [2023-11-17 11:28:59,572 INFO L138 Inliner]: procedures = 176, calls = 55, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 69 [2023-11-17 11:28:59,573 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-17 11:28:59,573 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-17 11:28:59,573 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-17 11:28:59,574 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-17 11:28:59,579 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:28:59" (1/1) ... [2023-11-17 11:28:59,580 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:28:59" (1/1) ... [2023-11-17 11:28:59,589 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:28:59" (1/1) ... [2023-11-17 11:28:59,590 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:28:59" (1/1) ... [2023-11-17 11:28:59,593 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:28:59" (1/1) ... [2023-11-17 11:28:59,594 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:28:59" (1/1) ... [2023-11-17 11:28:59,595 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:28:59" (1/1) ... [2023-11-17 11:28:59,596 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:28:59" (1/1) ... [2023-11-17 11:28:59,597 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-17 11:28:59,598 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-17 11:28:59,598 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-17 11:28:59,598 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-17 11:28:59,598 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:28:59" (1/1) ... [2023-11-17 11:28:59,608 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-17 11:28:59,615 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 11:28:59,654 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) [2023-11-17 11:28:59,713 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 [2023-11-17 11:28:59,732 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-17 11:28:59,732 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-17 11:28:59,732 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-17 11:28:59,732 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-17 11:28:59,733 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-17 11:28:59,733 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-11-17 11:28:59,733 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-11-17 11:28:59,733 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-11-17 11:28:59,733 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-11-17 11:28:59,733 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-11-17 11:28:59,733 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-11-17 11:28:59,733 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-17 11:28:59,733 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-17 11:28:59,733 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-17 11:28:59,733 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-17 11:28:59,734 WARN L211 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-17 11:28:59,821 INFO L239 CfgBuilder]: Building ICFG [2023-11-17 11:28:59,823 INFO L265 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-17 11:28:59,945 INFO L280 CfgBuilder]: Performing block encoding [2023-11-17 11:29:00,016 INFO L302 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-17 11:29:00,016 INFO L307 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-17 11:29:00,018 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.11 11:29:00 BoogieIcfgContainer [2023-11-17 11:29:00,018 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-17 11:29:00,019 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-17 11:29:00,019 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-17 11:29:00,023 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-17 11:29:00,023 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.11 11:28:59" (1/3) ... [2023-11-17 11:29:00,024 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ee10168 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 11:29:00, skipping insertion in model container [2023-11-17 11:29:00,024 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:28:59" (2/3) ... [2023-11-17 11:29:00,024 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ee10168 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 11:29:00, skipping insertion in model container [2023-11-17 11:29:00,024 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.11 11:29:00" (3/3) ... [2023-11-17 11:29:00,025 INFO L112 eAbstractionObserver]: Analyzing ICFG safe015_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2023-11-17 11:29:00,037 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-17 11:29:00,037 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-17 11:29:00,037 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-17 11:29:00,133 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-17 11:29:00,163 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 48 places, 39 transitions, 90 flow [2023-11-17 11:29:00,185 INFO L124 PetriNetUnfolderBase]: 1/36 cut-off events. [2023-11-17 11:29:00,185 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-17 11:29:00,188 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46 conditions, 36 events. 1/36 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 63 event pairs, 0 based on Foata normal form. 0/34 useless extension candidates. Maximal degree in co-relation 38. Up to 2 conditions per place. [2023-11-17 11:29:00,188 INFO L82 GeneralOperation]: Start removeDead. Operand has 48 places, 39 transitions, 90 flow [2023-11-17 11:29:00,191 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 43 places, 33 transitions, 75 flow [2023-11-17 11:29:00,193 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2023-11-17 11:29:00,201 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 43 places, 33 transitions, 75 flow [2023-11-17 11:29:00,203 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 43 places, 33 transitions, 75 flow [2023-11-17 11:29:00,204 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 43 places, 33 transitions, 75 flow [2023-11-17 11:29:00,211 INFO L124 PetriNetUnfolderBase]: 0/33 cut-off events. [2023-11-17 11:29:00,211 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-17 11:29:00,211 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43 conditions, 33 events. 0/33 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 58 event pairs, 0 based on Foata normal form. 0/33 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2023-11-17 11:29:00,212 INFO L119 LiptonReduction]: Number of co-enabled transitions 624 [2023-11-17 11:29:00,542 INFO L134 LiptonReduction]: Checked pairs total: 830 [2023-11-17 11:29:00,543 INFO L136 LiptonReduction]: Total number of compositions: 16 [2023-11-17 11:29:00,561 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-17 11:29:00,567 INFO L357 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=false, 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;@5132248e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-17 11:29:00,567 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-11-17 11:29:00,573 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-17 11:29:00,573 INFO L124 PetriNetUnfolderBase]: 0/15 cut-off events. [2023-11-17 11:29:00,573 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-17 11:29:00,573 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:29:00,574 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:29:00,574 INFO L420 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)] === [2023-11-17 11:29:00,578 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:29:00,578 INFO L85 PathProgramCache]: Analyzing trace with hash -600916916, now seen corresponding path program 1 times [2023-11-17 11:29:00,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:29:00,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1982925549] [2023-11-17 11:29:00,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:29:00,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:29:00,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:29:00,996 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 11:29:00,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:29:00,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1982925549] [2023-11-17 11:29:00,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1982925549] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:29:00,997 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:29:00,997 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-17 11:29:00,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652211569] [2023-11-17 11:29:01,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:29:01,005 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-17 11:29:01,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:29:01,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-17 11:29:01,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-17 11:29:01,035 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 55 [2023-11-17 11:29:01,036 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 17 transitions, 43 flow. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 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) [2023-11-17 11:29:01,037 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:29:01,037 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 55 [2023-11-17 11:29:01,037 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:29:01,196 INFO L124 PetriNetUnfolderBase]: 562/908 cut-off events. [2023-11-17 11:29:01,197 INFO L125 PetriNetUnfolderBase]: For 17/17 co-relation queries the response was YES. [2023-11-17 11:29:01,201 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1873 conditions, 908 events. 562/908 cut-off events. For 17/17 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 3984 event pairs, 238 based on Foata normal form. 53/961 useless extension candidates. Maximal degree in co-relation 1862. Up to 464 conditions per place. [2023-11-17 11:29:01,206 INFO L140 encePairwiseOnDemand]: 47/55 looper letters, 24 selfloop transitions, 7 changer transitions 0/31 dead transitions. [2023-11-17 11:29:01,207 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 31 transitions, 139 flow [2023-11-17 11:29:01,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-17 11:29:01,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-17 11:29:01,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 86 transitions. [2023-11-17 11:29:01,217 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5212121212121212 [2023-11-17 11:29:01,217 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 86 transitions. [2023-11-17 11:29:01,217 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 86 transitions. [2023-11-17 11:29:01,218 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:29:01,220 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 86 transitions. [2023-11-17 11:29:01,223 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 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) [2023-11-17 11:29:01,228 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 55.0) internal successors, (220), 4 states have internal predecessors, (220), 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) [2023-11-17 11:29:01,229 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 55.0) internal successors, (220), 4 states have internal predecessors, (220), 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) [2023-11-17 11:29:01,230 INFO L175 Difference]: Start difference. First operand has 27 places, 17 transitions, 43 flow. Second operand 3 states and 86 transitions. [2023-11-17 11:29:01,230 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 31 transitions, 139 flow [2023-11-17 11:29:01,233 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 31 transitions, 134 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-17 11:29:01,235 INFO L231 Difference]: Finished difference. Result has 28 places, 23 transitions, 94 flow [2023-11-17 11:29:01,237 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=40, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=94, PETRI_PLACES=28, PETRI_TRANSITIONS=23} [2023-11-17 11:29:01,239 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 1 predicate places. [2023-11-17 11:29:01,239 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 23 transitions, 94 flow [2023-11-17 11:29:01,239 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 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) [2023-11-17 11:29:01,240 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:29:01,240 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:29:01,240 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-17 11:29:01,240 INFO L420 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)] === [2023-11-17 11:29:01,241 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:29:01,241 INFO L85 PathProgramCache]: Analyzing trace with hash -1448555075, now seen corresponding path program 1 times [2023-11-17 11:29:01,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:29:01,241 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [386704504] [2023-11-17 11:29:01,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:29:01,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:29:01,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:29:01,434 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 11:29:01,434 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:29:01,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [386704504] [2023-11-17 11:29:01,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [386704504] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:29:01,435 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:29:01,435 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-17 11:29:01,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404397206] [2023-11-17 11:29:01,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:29:01,436 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-17 11:29:01,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:29:01,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-17 11:29:01,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-17 11:29:01,437 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 55 [2023-11-17 11:29:01,437 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 23 transitions, 94 flow. Second operand has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 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) [2023-11-17 11:29:01,437 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:29:01,437 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 55 [2023-11-17 11:29:01,437 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:29:01,528 INFO L124 PetriNetUnfolderBase]: 526/853 cut-off events. [2023-11-17 11:29:01,528 INFO L125 PetriNetUnfolderBase]: For 377/377 co-relation queries the response was YES. [2023-11-17 11:29:01,529 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2447 conditions, 853 events. 526/853 cut-off events. For 377/377 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 3512 event pairs, 110 based on Foata normal form. 10/863 useless extension candidates. Maximal degree in co-relation 2435. Up to 345 conditions per place. [2023-11-17 11:29:01,532 INFO L140 encePairwiseOnDemand]: 47/55 looper letters, 30 selfloop transitions, 8 changer transitions 0/38 dead transitions. [2023-11-17 11:29:01,532 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 38 transitions, 224 flow [2023-11-17 11:29:01,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-17 11:29:01,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-17 11:29:01,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 106 transitions. [2023-11-17 11:29:01,536 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4818181818181818 [2023-11-17 11:29:01,536 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 106 transitions. [2023-11-17 11:29:01,536 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 106 transitions. [2023-11-17 11:29:01,537 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:29:01,537 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 106 transitions. [2023-11-17 11:29:01,538 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 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) [2023-11-17 11:29:01,539 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 55.0) internal successors, (275), 5 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:29:01,539 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 55.0) internal successors, (275), 5 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:29:01,539 INFO L175 Difference]: Start difference. First operand has 28 places, 23 transitions, 94 flow. Second operand 4 states and 106 transitions. [2023-11-17 11:29:01,540 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 38 transitions, 224 flow [2023-11-17 11:29:01,544 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 38 transitions, 202 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-17 11:29:01,545 INFO L231 Difference]: Finished difference. Result has 32 places, 27 transitions, 138 flow [2023-11-17 11:29:01,545 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=80, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=138, PETRI_PLACES=32, PETRI_TRANSITIONS=27} [2023-11-17 11:29:01,545 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 5 predicate places. [2023-11-17 11:29:01,546 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 27 transitions, 138 flow [2023-11-17 11:29:01,546 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 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) [2023-11-17 11:29:01,546 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:29:01,546 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:29:01,547 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-17 11:29:01,548 INFO L420 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)] === [2023-11-17 11:29:01,550 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:29:01,550 INFO L85 PathProgramCache]: Analyzing trace with hash -1448555137, now seen corresponding path program 1 times [2023-11-17 11:29:01,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:29:01,553 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1840437736] [2023-11-17 11:29:01,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:29:01,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:29:01,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:29:01,663 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 11:29:01,664 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:29:01,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1840437736] [2023-11-17 11:29:01,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1840437736] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:29:01,664 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:29:01,664 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-17 11:29:01,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [981382831] [2023-11-17 11:29:01,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:29:01,668 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-17 11:29:01,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:29:01,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-17 11:29:01,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-17 11:29:01,669 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 55 [2023-11-17 11:29:01,670 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 27 transitions, 138 flow. Second operand has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 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) [2023-11-17 11:29:01,670 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:29:01,670 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 55 [2023-11-17 11:29:01,670 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:29:01,804 INFO L124 PetriNetUnfolderBase]: 503/817 cut-off events. [2023-11-17 11:29:01,804 INFO L125 PetriNetUnfolderBase]: For 629/629 co-relation queries the response was YES. [2023-11-17 11:29:01,806 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2574 conditions, 817 events. 503/817 cut-off events. For 629/629 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 3430 event pairs, 75 based on Foata normal form. 4/821 useless extension candidates. Maximal degree in co-relation 2559. Up to 419 conditions per place. [2023-11-17 11:29:01,809 INFO L140 encePairwiseOnDemand]: 47/55 looper letters, 37 selfloop transitions, 15 changer transitions 0/52 dead transitions. [2023-11-17 11:29:01,809 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 52 transitions, 348 flow [2023-11-17 11:29:01,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-17 11:29:01,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-17 11:29:01,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 115 transitions. [2023-11-17 11:29:01,810 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5227272727272727 [2023-11-17 11:29:01,811 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 115 transitions. [2023-11-17 11:29:01,811 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 115 transitions. [2023-11-17 11:29:01,811 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:29:01,811 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 115 transitions. [2023-11-17 11:29:01,811 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 28.75) internal successors, (115), 4 states have internal predecessors, (115), 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) [2023-11-17 11:29:01,812 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 55.0) internal successors, (275), 5 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:29:01,812 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 55.0) internal successors, (275), 5 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:29:01,812 INFO L175 Difference]: Start difference. First operand has 32 places, 27 transitions, 138 flow. Second operand 4 states and 115 transitions. [2023-11-17 11:29:01,812 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 52 transitions, 348 flow [2023-11-17 11:29:01,814 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 52 transitions, 343 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-17 11:29:01,815 INFO L231 Difference]: Finished difference. Result has 37 places, 35 transitions, 262 flow [2023-11-17 11:29:01,815 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=135, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=262, PETRI_PLACES=37, PETRI_TRANSITIONS=35} [2023-11-17 11:29:01,816 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 10 predicate places. [2023-11-17 11:29:01,816 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 35 transitions, 262 flow [2023-11-17 11:29:01,816 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 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) [2023-11-17 11:29:01,816 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:29:01,816 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:29:01,816 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-17 11:29:01,816 INFO L420 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)] === [2023-11-17 11:29:01,817 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:29:01,817 INFO L85 PathProgramCache]: Analyzing trace with hash -1955534290, now seen corresponding path program 1 times [2023-11-17 11:29:01,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:29:01,817 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1987533036] [2023-11-17 11:29:01,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:29:01,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:29:01,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:29:01,898 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 11:29:01,898 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:29:01,899 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1987533036] [2023-11-17 11:29:01,899 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1987533036] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:29:01,899 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:29:01,899 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-17 11:29:01,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215078393] [2023-11-17 11:29:01,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:29:01,899 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-17 11:29:01,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:29:01,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-17 11:29:01,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-17 11:29:01,900 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 55 [2023-11-17 11:29:01,900 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 35 transitions, 262 flow. Second operand has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 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) [2023-11-17 11:29:01,900 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:29:01,900 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 55 [2023-11-17 11:29:01,901 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:29:02,023 INFO L124 PetriNetUnfolderBase]: 478/778 cut-off events. [2023-11-17 11:29:02,024 INFO L125 PetriNetUnfolderBase]: For 1347/1347 co-relation queries the response was YES. [2023-11-17 11:29:02,041 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2939 conditions, 778 events. 478/778 cut-off events. For 1347/1347 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 3202 event pairs, 58 based on Foata normal form. 5/783 useless extension candidates. Maximal degree in co-relation 2920. Up to 339 conditions per place. [2023-11-17 11:29:02,044 INFO L140 encePairwiseOnDemand]: 47/55 looper letters, 40 selfloop transitions, 18 changer transitions 0/58 dead transitions. [2023-11-17 11:29:02,044 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 58 transitions, 517 flow [2023-11-17 11:29:02,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-17 11:29:02,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-17 11:29:02,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 110 transitions. [2023-11-17 11:29:02,062 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2023-11-17 11:29:02,062 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 110 transitions. [2023-11-17 11:29:02,062 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 110 transitions. [2023-11-17 11:29:02,062 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:29:02,062 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 110 transitions. [2023-11-17 11:29:02,063 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 27.5) internal successors, (110), 4 states have internal predecessors, (110), 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) [2023-11-17 11:29:02,064 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 55.0) internal successors, (275), 5 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:29:02,064 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 55.0) internal successors, (275), 5 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:29:02,064 INFO L175 Difference]: Start difference. First operand has 37 places, 35 transitions, 262 flow. Second operand 4 states and 110 transitions. [2023-11-17 11:29:02,064 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 58 transitions, 517 flow [2023-11-17 11:29:02,069 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 58 transitions, 517 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-17 11:29:02,070 INFO L231 Difference]: Finished difference. Result has 43 places, 43 transitions, 440 flow [2023-11-17 11:29:02,070 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=262, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=440, PETRI_PLACES=43, PETRI_TRANSITIONS=43} [2023-11-17 11:29:02,071 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 16 predicate places. [2023-11-17 11:29:02,071 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 43 transitions, 440 flow [2023-11-17 11:29:02,071 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 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) [2023-11-17 11:29:02,071 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:29:02,071 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:29:02,072 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-17 11:29:02,073 INFO L420 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)] === [2023-11-17 11:29:02,073 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:29:02,073 INFO L85 PathProgramCache]: Analyzing trace with hash 711667969, now seen corresponding path program 1 times [2023-11-17 11:29:02,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:29:02,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [98962394] [2023-11-17 11:29:02,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:29:02,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:29:02,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:29:02,196 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 11:29:02,197 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:29:02,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [98962394] [2023-11-17 11:29:02,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [98962394] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:29:02,197 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:29:02,197 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-17 11:29:02,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [944071070] [2023-11-17 11:29:02,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:29:02,198 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-17 11:29:02,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:29:02,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-17 11:29:02,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-17 11:29:02,205 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 55 [2023-11-17 11:29:02,205 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 43 transitions, 440 flow. Second operand has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 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) [2023-11-17 11:29:02,205 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:29:02,206 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 55 [2023-11-17 11:29:02,208 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:29:02,390 INFO L124 PetriNetUnfolderBase]: 624/1025 cut-off events. [2023-11-17 11:29:02,391 INFO L125 PetriNetUnfolderBase]: For 3742/3742 co-relation queries the response was YES. [2023-11-17 11:29:02,393 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4322 conditions, 1025 events. 624/1025 cut-off events. For 3742/3742 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 4673 event pairs, 258 based on Foata normal form. 30/1055 useless extension candidates. Maximal degree in co-relation 4298. Up to 576 conditions per place. [2023-11-17 11:29:02,396 INFO L140 encePairwiseOnDemand]: 51/55 looper letters, 44 selfloop transitions, 9 changer transitions 27/80 dead transitions. [2023-11-17 11:29:02,396 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 80 transitions, 910 flow [2023-11-17 11:29:02,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-17 11:29:02,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-17 11:29:02,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 143 transitions. [2023-11-17 11:29:02,397 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.52 [2023-11-17 11:29:02,398 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 143 transitions. [2023-11-17 11:29:02,398 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 143 transitions. [2023-11-17 11:29:02,398 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:29:02,398 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 143 transitions. [2023-11-17 11:29:02,398 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 28.6) internal successors, (143), 5 states have internal predecessors, (143), 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) [2023-11-17 11:29:02,399 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 55.0) internal successors, (330), 6 states have internal predecessors, (330), 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) [2023-11-17 11:29:02,399 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 55.0) internal successors, (330), 6 states have internal predecessors, (330), 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) [2023-11-17 11:29:02,399 INFO L175 Difference]: Start difference. First operand has 43 places, 43 transitions, 440 flow. Second operand 5 states and 143 transitions. [2023-11-17 11:29:02,400 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 80 transitions, 910 flow [2023-11-17 11:29:02,405 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 80 transitions, 905 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-17 11:29:02,406 INFO L231 Difference]: Finished difference. Result has 49 places, 42 transitions, 459 flow [2023-11-17 11:29:02,406 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=435, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=459, PETRI_PLACES=49, PETRI_TRANSITIONS=42} [2023-11-17 11:29:02,408 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 22 predicate places. [2023-11-17 11:29:02,408 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 42 transitions, 459 flow [2023-11-17 11:29:02,409 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 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) [2023-11-17 11:29:02,409 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:29:02,409 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:29:02,409 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-17 11:29:02,409 INFO L420 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)] === [2023-11-17 11:29:02,409 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:29:02,409 INFO L85 PathProgramCache]: Analyzing trace with hash 816563088, now seen corresponding path program 1 times [2023-11-17 11:29:02,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:29:02,409 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1125555337] [2023-11-17 11:29:02,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:29:02,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:29:02,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:29:02,468 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 11:29:02,468 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:29:02,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1125555337] [2023-11-17 11:29:02,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1125555337] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:29:02,468 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:29:02,468 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-17 11:29:02,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1785514695] [2023-11-17 11:29:02,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:29:02,472 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-17 11:29:02,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:29:02,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-17 11:29:02,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-17 11:29:02,473 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 55 [2023-11-17 11:29:02,474 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 42 transitions, 459 flow. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 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) [2023-11-17 11:29:02,474 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:29:02,474 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 55 [2023-11-17 11:29:02,474 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:29:02,529 INFO L124 PetriNetUnfolderBase]: 278/496 cut-off events. [2023-11-17 11:29:02,529 INFO L125 PetriNetUnfolderBase]: For 2907/2926 co-relation queries the response was YES. [2023-11-17 11:29:02,530 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2248 conditions, 496 events. 278/496 cut-off events. For 2907/2926 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 2096 event pairs, 50 based on Foata normal form. 47/537 useless extension candidates. Maximal degree in co-relation 2221. Up to 379 conditions per place. [2023-11-17 11:29:02,532 INFO L140 encePairwiseOnDemand]: 50/55 looper letters, 57 selfloop transitions, 4 changer transitions 0/66 dead transitions. [2023-11-17 11:29:02,532 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 66 transitions, 810 flow [2023-11-17 11:29:02,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-17 11:29:02,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-17 11:29:02,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 92 transitions. [2023-11-17 11:29:02,533 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5575757575757576 [2023-11-17 11:29:02,533 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 92 transitions. [2023-11-17 11:29:02,533 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 92 transitions. [2023-11-17 11:29:02,533 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:29:02,533 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 92 transitions. [2023-11-17 11:29:02,533 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 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) [2023-11-17 11:29:02,533 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 55.0) internal successors, (220), 4 states have internal predecessors, (220), 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) [2023-11-17 11:29:02,534 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 55.0) internal successors, (220), 4 states have internal predecessors, (220), 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) [2023-11-17 11:29:02,534 INFO L175 Difference]: Start difference. First operand has 49 places, 42 transitions, 459 flow. Second operand 3 states and 92 transitions. [2023-11-17 11:29:02,534 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 66 transitions, 810 flow [2023-11-17 11:29:02,536 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 66 transitions, 784 flow, removed 2 selfloop flow, removed 4 redundant places. [2023-11-17 11:29:02,537 INFO L231 Difference]: Finished difference. Result has 46 places, 45 transitions, 463 flow [2023-11-17 11:29:02,537 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=437, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=463, PETRI_PLACES=46, PETRI_TRANSITIONS=45} [2023-11-17 11:29:02,539 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 19 predicate places. [2023-11-17 11:29:02,539 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 45 transitions, 463 flow [2023-11-17 11:29:02,539 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 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) [2023-11-17 11:29:02,539 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:29:02,539 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:29:02,539 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-17 11:29:02,539 INFO L420 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)] === [2023-11-17 11:29:02,540 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:29:02,540 INFO L85 PathProgramCache]: Analyzing trace with hash -96290940, now seen corresponding path program 1 times [2023-11-17 11:29:02,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:29:02,540 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1230993353] [2023-11-17 11:29:02,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:29:02,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:29:02,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:29:02,590 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 11:29:02,590 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:29:02,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1230993353] [2023-11-17 11:29:02,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1230993353] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:29:02,590 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:29:02,590 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-17 11:29:02,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [784847983] [2023-11-17 11:29:02,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:29:02,591 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-17 11:29:02,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:29:02,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-17 11:29:02,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-17 11:29:02,592 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 55 [2023-11-17 11:29:02,592 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 45 transitions, 463 flow. Second operand has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 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) [2023-11-17 11:29:02,592 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:29:02,592 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 55 [2023-11-17 11:29:02,592 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:29:02,650 INFO L124 PetriNetUnfolderBase]: 178/341 cut-off events. [2023-11-17 11:29:02,650 INFO L125 PetriNetUnfolderBase]: For 1679/1704 co-relation queries the response was YES. [2023-11-17 11:29:02,651 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1723 conditions, 341 events. 178/341 cut-off events. For 1679/1704 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1361 event pairs, 21 based on Foata normal form. 53/388 useless extension candidates. Maximal degree in co-relation 1696. Up to 127 conditions per place. [2023-11-17 11:29:02,652 INFO L140 encePairwiseOnDemand]: 50/55 looper letters, 65 selfloop transitions, 7 changer transitions 3/80 dead transitions. [2023-11-17 11:29:02,652 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 80 transitions, 948 flow [2023-11-17 11:29:02,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-17 11:29:02,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-17 11:29:02,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 123 transitions. [2023-11-17 11:29:02,653 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5590909090909091 [2023-11-17 11:29:02,653 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 123 transitions. [2023-11-17 11:29:02,653 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 123 transitions. [2023-11-17 11:29:02,653 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:29:02,653 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 123 transitions. [2023-11-17 11:29:02,653 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 30.75) internal successors, (123), 4 states have internal predecessors, (123), 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) [2023-11-17 11:29:02,654 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 55.0) internal successors, (275), 5 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:29:02,654 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 55.0) internal successors, (275), 5 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:29:02,654 INFO L175 Difference]: Start difference. First operand has 46 places, 45 transitions, 463 flow. Second operand 4 states and 123 transitions. [2023-11-17 11:29:02,654 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 80 transitions, 948 flow [2023-11-17 11:29:02,656 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 80 transitions, 944 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-17 11:29:02,658 INFO L231 Difference]: Finished difference. Result has 49 places, 48 transitions, 499 flow [2023-11-17 11:29:02,658 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=459, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=499, PETRI_PLACES=49, PETRI_TRANSITIONS=48} [2023-11-17 11:29:02,658 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 22 predicate places. [2023-11-17 11:29:02,658 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 48 transitions, 499 flow [2023-11-17 11:29:02,658 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 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) [2023-11-17 11:29:02,659 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:29:02,659 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:29:02,659 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-17 11:29:02,659 INFO L420 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)] === [2023-11-17 11:29:02,659 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:29:02,659 INFO L85 PathProgramCache]: Analyzing trace with hash -392142613, now seen corresponding path program 1 times [2023-11-17 11:29:02,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:29:02,659 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1146856565] [2023-11-17 11:29:02,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:29:02,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:29:02,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:29:02,756 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 11:29:02,756 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:29:02,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1146856565] [2023-11-17 11:29:02,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1146856565] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:29:02,757 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:29:02,757 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-17 11:29:02,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778232038] [2023-11-17 11:29:02,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:29:02,757 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-17 11:29:02,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:29:02,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-17 11:29:02,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-17 11:29:02,758 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 55 [2023-11-17 11:29:02,758 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 48 transitions, 499 flow. Second operand has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 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) [2023-11-17 11:29:02,758 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:29:02,758 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 55 [2023-11-17 11:29:02,758 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:29:02,829 INFO L124 PetriNetUnfolderBase]: 226/442 cut-off events. [2023-11-17 11:29:02,830 INFO L125 PetriNetUnfolderBase]: For 2149/2149 co-relation queries the response was YES. [2023-11-17 11:29:02,831 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2402 conditions, 442 events. 226/442 cut-off events. For 2149/2149 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1851 event pairs, 47 based on Foata normal form. 6/448 useless extension candidates. Maximal degree in co-relation 2373. Up to 189 conditions per place. [2023-11-17 11:29:02,833 INFO L140 encePairwiseOnDemand]: 47/55 looper letters, 41 selfloop transitions, 25 changer transitions 10/76 dead transitions. [2023-11-17 11:29:02,833 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 76 transitions, 840 flow [2023-11-17 11:29:02,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-17 11:29:02,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-17 11:29:02,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 112 transitions. [2023-11-17 11:29:02,834 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.509090909090909 [2023-11-17 11:29:02,834 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 112 transitions. [2023-11-17 11:29:02,835 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 112 transitions. [2023-11-17 11:29:02,835 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:29:02,835 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 112 transitions. [2023-11-17 11:29:02,835 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 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) [2023-11-17 11:29:02,836 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 55.0) internal successors, (275), 5 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:29:02,836 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 55.0) internal successors, (275), 5 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:29:02,836 INFO L175 Difference]: Start difference. First operand has 49 places, 48 transitions, 499 flow. Second operand 4 states and 112 transitions. [2023-11-17 11:29:02,836 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 76 transitions, 840 flow [2023-11-17 11:29:02,840 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 76 transitions, 802 flow, removed 9 selfloop flow, removed 2 redundant places. [2023-11-17 11:29:02,842 INFO L231 Difference]: Finished difference. Result has 52 places, 47 transitions, 562 flow [2023-11-17 11:29:02,842 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=485, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=562, PETRI_PLACES=52, PETRI_TRANSITIONS=47} [2023-11-17 11:29:02,843 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 25 predicate places. [2023-11-17 11:29:02,843 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 47 transitions, 562 flow [2023-11-17 11:29:02,843 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 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) [2023-11-17 11:29:02,843 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:29:02,843 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:29:02,843 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-17 11:29:02,844 INFO L420 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)] === [2023-11-17 11:29:02,844 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:29:02,844 INFO L85 PathProgramCache]: Analyzing trace with hash 1957159961, now seen corresponding path program 1 times [2023-11-17 11:29:02,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:29:02,844 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1659323610] [2023-11-17 11:29:02,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:29:02,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:29:02,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:29:02,920 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 11:29:02,921 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:29:02,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1659323610] [2023-11-17 11:29:02,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1659323610] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:29:02,921 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:29:02,921 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-17 11:29:02,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992067465] [2023-11-17 11:29:02,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:29:02,921 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-17 11:29:02,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:29:02,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-17 11:29:02,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-11-17 11:29:02,922 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 55 [2023-11-17 11:29:02,922 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 47 transitions, 562 flow. Second operand has 5 states, 5 states have (on average 23.8) internal successors, (119), 5 states have internal predecessors, (119), 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) [2023-11-17 11:29:02,922 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:29:02,922 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 55 [2023-11-17 11:29:02,922 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:29:02,985 INFO L124 PetriNetUnfolderBase]: 152/313 cut-off events. [2023-11-17 11:29:02,985 INFO L125 PetriNetUnfolderBase]: For 2219/2265 co-relation queries the response was YES. [2023-11-17 11:29:02,985 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1702 conditions, 313 events. 152/313 cut-off events. For 2219/2265 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1343 event pairs, 18 based on Foata normal form. 50/356 useless extension candidates. Maximal degree in co-relation 1671. Up to 119 conditions per place. [2023-11-17 11:29:02,986 INFO L140 encePairwiseOnDemand]: 50/55 looper letters, 26 selfloop transitions, 10 changer transitions 39/76 dead transitions. [2023-11-17 11:29:02,986 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 76 transitions, 1047 flow [2023-11-17 11:29:02,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-17 11:29:02,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-17 11:29:02,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 144 transitions. [2023-11-17 11:29:02,987 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5236363636363637 [2023-11-17 11:29:02,987 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 144 transitions. [2023-11-17 11:29:02,988 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 144 transitions. [2023-11-17 11:29:02,988 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:29:02,988 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 144 transitions. [2023-11-17 11:29:02,990 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 28.8) internal successors, (144), 5 states have internal predecessors, (144), 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) [2023-11-17 11:29:02,990 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 55.0) internal successors, (330), 6 states have internal predecessors, (330), 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) [2023-11-17 11:29:02,991 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 55.0) internal successors, (330), 6 states have internal predecessors, (330), 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) [2023-11-17 11:29:02,991 INFO L175 Difference]: Start difference. First operand has 52 places, 47 transitions, 562 flow. Second operand 5 states and 144 transitions. [2023-11-17 11:29:02,991 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 76 transitions, 1047 flow [2023-11-17 11:29:02,996 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 76 transitions, 1005 flow, removed 7 selfloop flow, removed 3 redundant places. [2023-11-17 11:29:02,997 INFO L231 Difference]: Finished difference. Result has 54 places, 29 transitions, 297 flow [2023-11-17 11:29:02,997 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=534, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=297, PETRI_PLACES=54, PETRI_TRANSITIONS=29} [2023-11-17 11:29:02,998 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 27 predicate places. [2023-11-17 11:29:02,998 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 29 transitions, 297 flow [2023-11-17 11:29:02,999 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.8) internal successors, (119), 5 states have internal predecessors, (119), 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) [2023-11-17 11:29:02,999 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:29:02,999 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:29:02,999 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-17 11:29:03,000 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 11:29:03,000 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:29:03,000 INFO L85 PathProgramCache]: Analyzing trace with hash -775550203, now seen corresponding path program 1 times [2023-11-17 11:29:03,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:29:03,002 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [197195212] [2023-11-17 11:29:03,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:29:03,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:29:03,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:29:03,110 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 11:29:03,111 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:29:03,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [197195212] [2023-11-17 11:29:03,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [197195212] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:29:03,111 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:29:03,111 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-17 11:29:03,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2106485790] [2023-11-17 11:29:03,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:29:03,111 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-17 11:29:03,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:29:03,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-17 11:29:03,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-17 11:29:03,112 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 55 [2023-11-17 11:29:03,112 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 29 transitions, 297 flow. Second operand has 5 states, 5 states have (on average 21.4) internal successors, (107), 5 states have internal predecessors, (107), 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) [2023-11-17 11:29:03,112 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:29:03,113 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 55 [2023-11-17 11:29:03,113 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:29:03,158 INFO L124 PetriNetUnfolderBase]: 35/86 cut-off events. [2023-11-17 11:29:03,158 INFO L125 PetriNetUnfolderBase]: For 527/527 co-relation queries the response was YES. [2023-11-17 11:29:03,158 INFO L83 FinitePrefix]: Finished finitePrefix Result has 534 conditions, 86 events. 35/86 cut-off events. For 527/527 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 216 event pairs, 4 based on Foata normal form. 1/87 useless extension candidates. Maximal degree in co-relation 503. Up to 68 conditions per place. [2023-11-17 11:29:03,158 INFO L140 encePairwiseOnDemand]: 52/55 looper letters, 0 selfloop transitions, 0 changer transitions 34/34 dead transitions. [2023-11-17 11:29:03,158 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 34 transitions, 395 flow [2023-11-17 11:29:03,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-17 11:29:03,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-17 11:29:03,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 96 transitions. [2023-11-17 11:29:03,159 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43636363636363634 [2023-11-17 11:29:03,159 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 96 transitions. [2023-11-17 11:29:03,159 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 96 transitions. [2023-11-17 11:29:03,159 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:29:03,160 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 96 transitions. [2023-11-17 11:29:03,160 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 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) [2023-11-17 11:29:03,160 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 55.0) internal successors, (275), 5 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:29:03,160 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 55.0) internal successors, (275), 5 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:29:03,161 INFO L175 Difference]: Start difference. First operand has 54 places, 29 transitions, 297 flow. Second operand 4 states and 96 transitions. [2023-11-17 11:29:03,161 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 34 transitions, 395 flow [2023-11-17 11:29:03,162 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 34 transitions, 283 flow, removed 8 selfloop flow, removed 14 redundant places. [2023-11-17 11:29:03,162 INFO L231 Difference]: Finished difference. Result has 42 places, 0 transitions, 0 flow [2023-11-17 11:29:03,163 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=185, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=42, PETRI_TRANSITIONS=0} [2023-11-17 11:29:03,164 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 15 predicate places. [2023-11-17 11:29:03,164 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 0 transitions, 0 flow [2023-11-17 11:29:03,164 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.4) internal successors, (107), 5 states have internal predecessors, (107), 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) [2023-11-17 11:29:03,166 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2023-11-17 11:29:03,166 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2023-11-17 11:29:03,167 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-11-17 11:29:03,167 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-11-17 11:29:03,167 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-17 11:29:03,167 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:29:03,169 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-17 11:29:03,169 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-17 11:29:03,172 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.11 11:29:03 BasicIcfg [2023-11-17 11:29:03,172 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-17 11:29:03,172 INFO L158 Benchmark]: Toolchain (without parser) took 4051.10ms. Allocated memory was 170.9MB in the beginning and 278.9MB in the end (delta: 108.0MB). Free memory was 126.1MB in the beginning and 246.5MB in the end (delta: -120.4MB). Peak memory consumption was 114.8MB. Max. memory is 8.0GB. [2023-11-17 11:29:03,172 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 170.9MB. Free memory is still 129.3MB. There was no memory consumed. Max. memory is 8.0GB. [2023-11-17 11:29:03,172 INFO L158 Benchmark]: CACSL2BoogieTranslator took 394.22ms. Allocated memory is still 170.9MB. Free memory was 126.1MB in the beginning and 105.6MB in the end (delta: 20.6MB). Peak memory consumption was 21.0MB. Max. memory is 8.0GB. [2023-11-17 11:29:03,172 INFO L158 Benchmark]: Boogie Procedure Inliner took 56.04ms. Allocated memory is still 170.9MB. Free memory was 105.6MB in the beginning and 103.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-11-17 11:29:03,173 INFO L158 Benchmark]: Boogie Preprocessor took 23.95ms. Allocated memory is still 170.9MB. Free memory was 103.5MB in the beginning and 102.0MB in the end (delta: 1.4MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-11-17 11:29:03,173 INFO L158 Benchmark]: RCFGBuilder took 419.97ms. Allocated memory is still 170.9MB. Free memory was 102.0MB in the beginning and 80.8MB in the end (delta: 21.2MB). Peak memory consumption was 21.0MB. Max. memory is 8.0GB. [2023-11-17 11:29:03,173 INFO L158 Benchmark]: TraceAbstraction took 3152.60ms. Allocated memory was 170.9MB in the beginning and 278.9MB in the end (delta: 108.0MB). Free memory was 80.0MB in the beginning and 246.5MB in the end (delta: -166.5MB). Peak memory consumption was 68.6MB. Max. memory is 8.0GB. [2023-11-17 11:29:03,174 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 170.9MB. Free memory is still 129.3MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 394.22ms. Allocated memory is still 170.9MB. Free memory was 126.1MB in the beginning and 105.6MB in the end (delta: 20.6MB). Peak memory consumption was 21.0MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 56.04ms. Allocated memory is still 170.9MB. Free memory was 105.6MB in the beginning and 103.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 23.95ms. Allocated memory is still 170.9MB. Free memory was 103.5MB in the beginning and 102.0MB in the end (delta: 1.4MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 419.97ms. Allocated memory is still 170.9MB. Free memory was 102.0MB in the beginning and 80.8MB in the end (delta: 21.2MB). Peak memory consumption was 21.0MB. Max. memory is 8.0GB. * TraceAbstraction took 3152.60ms. Allocated memory was 170.9MB in the beginning and 278.9MB in the end (delta: 108.0MB). Free memory was 80.0MB in the beginning and 246.5MB in the end (delta: -166.5MB). Peak memory consumption was 68.6MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 0.3s, 43 PlacesBefore, 27 PlacesAfterwards, 33 TransitionsBefore, 17 TransitionsAfterwards, 624 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 16 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 16 TotalNumberOfCompositions, 830 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 542, independent: 507, independent conditional: 0, independent unconditional: 507, dependent: 35, dependent conditional: 0, dependent unconditional: 35, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 422, independent: 393, independent conditional: 0, independent unconditional: 393, dependent: 29, dependent conditional: 0, dependent unconditional: 29, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 422, independent: 383, independent conditional: 0, independent unconditional: 383, dependent: 39, dependent conditional: 0, dependent unconditional: 39, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 39, independent: 10, independent conditional: 0, independent unconditional: 10, dependent: 29, dependent conditional: 0, dependent unconditional: 29, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 78, independent: 19, independent conditional: 0, independent unconditional: 19, dependent: 59, dependent conditional: 0, dependent unconditional: 59, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 542, independent: 114, independent conditional: 0, independent unconditional: 114, dependent: 6, dependent conditional: 0, dependent unconditional: 6, unknown: 422, unknown conditional: 0, unknown unconditional: 422] , Statistics on independence cache: Total cache size (in pairs): 64, Positive cache size: 52, Positive conditional cache size: 0, Positive unconditional cache size: 52, Negative cache size: 12, Negative conditional cache size: 0, Negative unconditional cache size: 12, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - 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, 64 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: 3.0s, OverallIterations: 10, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.4s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 129 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 129 mSDsluCounter, 12 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 3 mSDsCounter, 27 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 437 IncrementalHoareTripleChecker+Invalid, 464 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 27 mSolverCounterUnsat, 9 mSDtfsCounter, 437 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 28 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=562occurred in iteration=8, InterpolantAutomatonStates: 40, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 118 NumberOfCodeBlocks, 118 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 108 ConstructedInterpolants, 0 QuantifiedInterpolants, 552 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 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! [2023-11-17 11:29:03,186 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...