/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/safe016_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 11:28:59,378 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-17 11:28:59,427 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 11:28:59,452 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-17 11:28:59,452 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-17 11:28:59,454 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-17 11:28:59,455 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-17 11:28:59,455 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-17 11:28:59,456 INFO L153 SettingsManager]: * Use SBE=true [2023-11-17 11:28:59,459 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-17 11:28:59,459 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-17 11:28:59,459 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-17 11:28:59,459 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-17 11:28:59,460 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-17 11:28:59,460 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-17 11:28:59,461 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-17 11:28:59,461 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-17 11:28:59,461 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-17 11:28:59,461 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-17 11:28:59,461 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-17 11:28:59,461 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-17 11:28:59,462 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-17 11:28:59,462 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-17 11:28:59,462 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-11-17 11:28:59,462 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-17 11:28:59,463 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-17 11:28:59,463 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-17 11:28:59,463 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-17 11:28:59,464 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-17 11:28:59,464 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-17 11:28:59,464 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-17 11:28:59,465 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-17 11:28:59,465 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Only consider context switches at boundaries of atomic blocks -> true [2023-11-17 11:28:59,679 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-17 11:28:59,695 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-17 11:28:59,697 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-17 11:28:59,698 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-17 11:28:59,698 INFO L274 PluginConnector]: CDTParser initialized [2023-11-17 11:28:59,699 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe016_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2023-11-17 11:29:00,873 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-17 11:29:01,077 INFO L384 CDTParser]: Found 1 translation units. [2023-11-17 11:29:01,080 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe016_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2023-11-17 11:29:01,096 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ed8ad2eea/9890137c55be4f148b8e366581cb6b87/FLAG916589fe5 [2023-11-17 11:29:01,110 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ed8ad2eea/9890137c55be4f148b8e366581cb6b87 [2023-11-17 11:29:01,112 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-17 11:29:01,113 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-11-17 11:29:01,117 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-17 11:29:01,117 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-17 11:29:01,120 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-17 11:29:01,121 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 11:29:01" (1/1) ... [2023-11-17 11:29:01,122 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a9fa2b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:29:01, skipping insertion in model container [2023-11-17 11:29:01,122 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 11:29:01" (1/1) ... [2023-11-17 11:29:01,166 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-17 11:29:01,298 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/safe016_pso.oepc_pso.opt_tso.oepc_tso.opt.i[975,988] [2023-11-17 11:29:01,421 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-17 11:29:01,430 INFO L202 MainTranslator]: Completed pre-run [2023-11-17 11:29:01,444 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/safe016_pso.oepc_pso.opt_tso.oepc_tso.opt.i[975,988] [2023-11-17 11:29:01,473 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-17 11:29:01,494 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-17 11:29:01,495 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-17 11:29:01,500 INFO L206 MainTranslator]: Completed translation [2023-11-17 11:29:01,500 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:29:01 WrapperNode [2023-11-17 11:29:01,500 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-17 11:29:01,501 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-17 11:29:01,501 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-17 11:29:01,501 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-17 11:29:01,506 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:29:01" (1/1) ... [2023-11-17 11:29:01,518 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:29:01" (1/1) ... [2023-11-17 11:29:01,556 INFO L138 Inliner]: procedures = 177, calls = 62, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 80 [2023-11-17 11:29:01,557 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-17 11:29:01,557 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-17 11:29:01,557 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-17 11:29:01,558 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-17 11:29:01,563 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:29:01" (1/1) ... [2023-11-17 11:29:01,563 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:29:01" (1/1) ... [2023-11-17 11:29:01,565 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:29:01" (1/1) ... [2023-11-17 11:29:01,565 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:29:01" (1/1) ... [2023-11-17 11:29:01,572 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:29:01" (1/1) ... [2023-11-17 11:29:01,573 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:29:01" (1/1) ... [2023-11-17 11:29:01,575 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:29:01" (1/1) ... [2023-11-17 11:29:01,575 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:29:01" (1/1) ... [2023-11-17 11:29:01,577 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-17 11:29:01,578 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-17 11:29:01,578 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-17 11:29:01,578 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-17 11:29:01,579 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:29:01" (1/1) ... [2023-11-17 11:29:01,582 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-17 11:29:01,607 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 11:29:01,658 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 11:29:01,664 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 11:29:01,694 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-17 11:29:01,695 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-17 11:29:01,695 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-17 11:29:01,695 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-17 11:29:01,695 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-17 11:29:01,695 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-11-17 11:29:01,695 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-11-17 11:29:01,695 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-11-17 11:29:01,695 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-11-17 11:29:01,695 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-11-17 11:29:01,696 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-11-17 11:29:01,696 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2023-11-17 11:29:01,696 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2023-11-17 11:29:01,696 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-17 11:29:01,696 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-17 11:29:01,696 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-17 11:29:01,696 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-17 11:29:01,697 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 11:29:01,801 INFO L239 CfgBuilder]: Building ICFG [2023-11-17 11:29:01,803 INFO L265 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-17 11:29:02,033 INFO L280 CfgBuilder]: Performing block encoding [2023-11-17 11:29:02,132 INFO L302 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-17 11:29:02,132 INFO L307 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-17 11:29:02,133 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.11 11:29:02 BoogieIcfgContainer [2023-11-17 11:29:02,133 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-17 11:29:02,135 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-17 11:29:02,135 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-17 11:29:02,138 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-17 11:29:02,138 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.11 11:29:01" (1/3) ... [2023-11-17 11:29:02,139 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66ea3a27 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 11:29:02, skipping insertion in model container [2023-11-17 11:29:02,139 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:29:01" (2/3) ... [2023-11-17 11:29:02,139 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66ea3a27 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 11:29:02, skipping insertion in model container [2023-11-17 11:29:02,139 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.11 11:29:02" (3/3) ... [2023-11-17 11:29:02,140 INFO L112 eAbstractionObserver]: Analyzing ICFG safe016_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2023-11-17 11:29:02,154 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-17 11:29:02,154 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-17 11:29:02,154 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-17 11:29:02,190 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-17 11:29:02,232 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 57 places, 45 transitions, 106 flow [2023-11-17 11:29:02,280 INFO L124 PetriNetUnfolderBase]: 1/41 cut-off events. [2023-11-17 11:29:02,280 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-17 11:29:02,283 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54 conditions, 41 events. 1/41 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 78 event pairs, 0 based on Foata normal form. 0/39 useless extension candidates. Maximal degree in co-relation 45. Up to 2 conditions per place. [2023-11-17 11:29:02,283 INFO L82 GeneralOperation]: Start removeDead. Operand has 57 places, 45 transitions, 106 flow [2023-11-17 11:29:02,285 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 51 places, 38 transitions, 88 flow [2023-11-17 11:29:02,288 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2023-11-17 11:29:02,308 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 51 places, 38 transitions, 88 flow [2023-11-17 11:29:02,310 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 51 places, 38 transitions, 88 flow [2023-11-17 11:29:02,311 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 51 places, 38 transitions, 88 flow [2023-11-17 11:29:02,319 INFO L124 PetriNetUnfolderBase]: 0/38 cut-off events. [2023-11-17 11:29:02,319 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-17 11:29:02,319 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51 conditions, 38 events. 0/38 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 74 event pairs, 0 based on Foata normal form. 0/38 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2023-11-17 11:29:02,320 INFO L119 LiptonReduction]: Number of co-enabled transitions 850 [2023-11-17 11:29:02,709 INFO L134 LiptonReduction]: Checked pairs total: 1208 [2023-11-17 11:29:02,709 INFO L136 LiptonReduction]: Total number of compositions: 18 [2023-11-17 11:29:02,720 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-17 11:29:02,724 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;@30cfc1c8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-17 11:29:02,724 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2023-11-17 11:29:02,729 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-17 11:29:02,729 INFO L124 PetriNetUnfolderBase]: 0/19 cut-off events. [2023-11-17 11:29:02,729 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-17 11:29:02,729 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:29:02,730 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:29:02,730 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 2 more)] === [2023-11-17 11:29:02,733 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:29:02,734 INFO L85 PathProgramCache]: Analyzing trace with hash -1627219876, now seen corresponding path program 1 times [2023-11-17 11:29:02,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:29:02,740 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [205598958] [2023-11-17 11:29:02,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:29:02,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:29:02,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:29:03,069 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 11:29:03,069 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:29:03,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [205598958] [2023-11-17 11:29:03,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [205598958] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:29:03,070 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:29:03,070 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-17 11:29:03,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953671208] [2023-11-17 11:29:03,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:29:03,077 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-17 11:29:03,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:29:03,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-17 11:29:03,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-17 11:29:03,096 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 63 [2023-11-17 11:29:03,097 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 20 transitions, 52 flow. Second operand has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 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 11:29:03,098 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:29:03,098 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 63 [2023-11-17 11:29:03,098 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:29:03,326 INFO L124 PetriNetUnfolderBase]: 2019/2943 cut-off events. [2023-11-17 11:29:03,326 INFO L125 PetriNetUnfolderBase]: For 65/65 co-relation queries the response was YES. [2023-11-17 11:29:03,331 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6086 conditions, 2943 events. 2019/2943 cut-off events. For 65/65 co-relation queries the response was YES. Maximal size of possible extension queue 156. Compared 13597 event pairs, 796 based on Foata normal form. 109/3052 useless extension candidates. Maximal degree in co-relation 6074. Up to 1819 conditions per place. [2023-11-17 11:29:03,343 INFO L140 encePairwiseOnDemand]: 55/63 looper letters, 30 selfloop transitions, 7 changer transitions 0/37 dead transitions. [2023-11-17 11:29:03,343 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 37 transitions, 169 flow [2023-11-17 11:29:03,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-17 11:29:03,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-17 11:29:03,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 101 transitions. [2023-11-17 11:29:03,352 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5343915343915344 [2023-11-17 11:29:03,352 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 101 transitions. [2023-11-17 11:29:03,353 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 101 transitions. [2023-11-17 11:29:03,353 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:29:03,355 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 101 transitions. [2023-11-17 11:29:03,356 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 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 11:29:03,358 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 63.0) internal successors, (252), 4 states have internal predecessors, (252), 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 11:29:03,359 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 63.0) internal successors, (252), 4 states have internal predecessors, (252), 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 11:29:03,360 INFO L175 Difference]: Start difference. First operand has 33 places, 20 transitions, 52 flow. Second operand 3 states and 101 transitions. [2023-11-17 11:29:03,361 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 37 transitions, 169 flow [2023-11-17 11:29:03,364 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 37 transitions, 162 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-17 11:29:03,365 INFO L231 Difference]: Finished difference. Result has 33 places, 26 transitions, 102 flow [2023-11-17 11:29:03,366 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=48, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=102, PETRI_PLACES=33, PETRI_TRANSITIONS=26} [2023-11-17 11:29:03,368 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 0 predicate places. [2023-11-17 11:29:03,369 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 26 transitions, 102 flow [2023-11-17 11:29:03,369 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 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 11:29:03,369 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:29:03,369 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:29:03,369 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-17 11:29:03,369 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 2 more)] === [2023-11-17 11:29:03,370 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:29:03,370 INFO L85 PathProgramCache]: Analyzing trace with hash 1095791287, now seen corresponding path program 1 times [2023-11-17 11:29:03,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:29:03,370 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [78200658] [2023-11-17 11:29:03,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:29:03,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:29:03,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:29:03,473 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 11:29:03,473 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:29:03,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [78200658] [2023-11-17 11:29:03,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [78200658] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:29:03,473 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:29:03,473 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-17 11:29:03,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393309907] [2023-11-17 11:29:03,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:29:03,474 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-17 11:29:03,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:29:03,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-17 11:29:03,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-17 11:29:03,475 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 63 [2023-11-17 11:29:03,475 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 26 transitions, 102 flow. Second operand has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 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 11:29:03,476 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:29:03,476 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 63 [2023-11-17 11:29:03,476 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:29:03,681 INFO L124 PetriNetUnfolderBase]: 1886/2759 cut-off events. [2023-11-17 11:29:03,681 INFO L125 PetriNetUnfolderBase]: For 1160/1160 co-relation queries the response was YES. [2023-11-17 11:29:03,686 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7639 conditions, 2759 events. 1886/2759 cut-off events. For 1160/1160 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 12535 event pairs, 269 based on Foata normal form. 33/2792 useless extension candidates. Maximal degree in co-relation 7627. Up to 1394 conditions per place. [2023-11-17 11:29:03,697 INFO L140 encePairwiseOnDemand]: 55/63 looper letters, 38 selfloop transitions, 8 changer transitions 0/46 dead transitions. [2023-11-17 11:29:03,697 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 46 transitions, 260 flow [2023-11-17 11:29:03,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-17 11:29:03,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-17 11:29:03,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 127 transitions. [2023-11-17 11:29:03,702 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.503968253968254 [2023-11-17 11:29:03,702 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 127 transitions. [2023-11-17 11:29:03,702 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 127 transitions. [2023-11-17 11:29:03,703 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:29:03,703 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 127 transitions. [2023-11-17 11:29:03,704 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 31.75) internal successors, (127), 4 states have internal predecessors, (127), 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 11:29:03,705 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 63.0) internal successors, (315), 5 states have internal predecessors, (315), 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 11:29:03,705 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 63.0) internal successors, (315), 5 states have internal predecessors, (315), 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 11:29:03,705 INFO L175 Difference]: Start difference. First operand has 33 places, 26 transitions, 102 flow. Second operand 4 states and 127 transitions. [2023-11-17 11:29:03,705 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 46 transitions, 260 flow [2023-11-17 11:29:03,712 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 46 transitions, 238 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-17 11:29:03,714 INFO L231 Difference]: Finished difference. Result has 37 places, 30 transitions, 146 flow [2023-11-17 11:29:03,715 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=146, PETRI_PLACES=37, PETRI_TRANSITIONS=30} [2023-11-17 11:29:03,715 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 4 predicate places. [2023-11-17 11:29:03,716 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 30 transitions, 146 flow [2023-11-17 11:29:03,716 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 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 11:29:03,716 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:29:03,717 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:29:03,719 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-17 11:29:03,719 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 2 more)] === [2023-11-17 11:29:03,725 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:29:03,725 INFO L85 PathProgramCache]: Analyzing trace with hash 1095791504, now seen corresponding path program 1 times [2023-11-17 11:29:03,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:29:03,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [942095109] [2023-11-17 11:29:03,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:29:03,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:29:03,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:29:03,871 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 11:29:03,872 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:29:03,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [942095109] [2023-11-17 11:29:03,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [942095109] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:29:03,872 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:29:03,872 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-17 11:29:03,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037610322] [2023-11-17 11:29:03,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:29:03,873 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-17 11:29:03,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:29:03,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-17 11:29:03,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-17 11:29:03,873 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 63 [2023-11-17 11:29:03,874 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 30 transitions, 146 flow. Second operand has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 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 11:29:03,874 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:29:03,874 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 63 [2023-11-17 11:29:03,874 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:29:04,038 INFO L124 PetriNetUnfolderBase]: 1779/2609 cut-off events. [2023-11-17 11:29:04,039 INFO L125 PetriNetUnfolderBase]: For 2545/2545 co-relation queries the response was YES. [2023-11-17 11:29:04,043 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7955 conditions, 2609 events. 1779/2609 cut-off events. For 2545/2545 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 11898 event pairs, 479 based on Foata normal form. 25/2634 useless extension candidates. Maximal degree in co-relation 7940. Up to 1314 conditions per place. [2023-11-17 11:29:04,052 INFO L140 encePairwiseOnDemand]: 55/63 looper letters, 48 selfloop transitions, 12 changer transitions 0/60 dead transitions. [2023-11-17 11:29:04,052 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 60 transitions, 380 flow [2023-11-17 11:29:04,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-17 11:29:04,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-17 11:29:04,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 135 transitions. [2023-11-17 11:29:04,053 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5357142857142857 [2023-11-17 11:29:04,053 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 135 transitions. [2023-11-17 11:29:04,053 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 135 transitions. [2023-11-17 11:29:04,053 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:29:04,053 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 135 transitions. [2023-11-17 11:29:04,054 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 33.75) internal successors, (135), 4 states have internal predecessors, (135), 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 11:29:04,054 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 63.0) internal successors, (315), 5 states have internal predecessors, (315), 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 11:29:04,055 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 63.0) internal successors, (315), 5 states have internal predecessors, (315), 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 11:29:04,055 INFO L175 Difference]: Start difference. First operand has 37 places, 30 transitions, 146 flow. Second operand 4 states and 135 transitions. [2023-11-17 11:29:04,055 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 60 transitions, 380 flow [2023-11-17 11:29:04,059 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 60 transitions, 375 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-17 11:29:04,059 INFO L231 Difference]: Finished difference. Result has 42 places, 36 transitions, 248 flow [2023-11-17 11:29:04,059 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=143, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=248, PETRI_PLACES=42, PETRI_TRANSITIONS=36} [2023-11-17 11:29:04,060 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 9 predicate places. [2023-11-17 11:29:04,060 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 36 transitions, 248 flow [2023-11-17 11:29:04,060 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 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 11:29:04,060 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:29:04,060 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:29:04,061 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-17 11:29:04,061 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 2 more)] === [2023-11-17 11:29:04,061 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:29:04,061 INFO L85 PathProgramCache]: Analyzing trace with hash -390208363, now seen corresponding path program 1 times [2023-11-17 11:29:04,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:29:04,061 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1863459416] [2023-11-17 11:29:04,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:29:04,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:29:04,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:29:04,163 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 11:29:04,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:29:04,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1863459416] [2023-11-17 11:29:04,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1863459416] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:29:04,163 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:29:04,163 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-17 11:29:04,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1755625360] [2023-11-17 11:29:04,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:29:04,164 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-17 11:29:04,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:29:04,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-17 11:29:04,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-17 11:29:04,165 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 63 [2023-11-17 11:29:04,165 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 36 transitions, 248 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 11:29:04,165 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:29:04,165 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 63 [2023-11-17 11:29:04,165 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:29:04,351 INFO L124 PetriNetUnfolderBase]: 1723/2532 cut-off events. [2023-11-17 11:29:04,351 INFO L125 PetriNetUnfolderBase]: For 5295/5295 co-relation queries the response was YES. [2023-11-17 11:29:04,355 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8983 conditions, 2532 events. 1723/2532 cut-off events. For 5295/5295 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 11584 event pairs, 266 based on Foata normal form. 9/2541 useless extension candidates. Maximal degree in co-relation 8964. Up to 1359 conditions per place. [2023-11-17 11:29:04,364 INFO L140 encePairwiseOnDemand]: 55/63 looper letters, 48 selfloop transitions, 19 changer transitions 0/67 dead transitions. [2023-11-17 11:29:04,365 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 67 transitions, 545 flow [2023-11-17 11:29:04,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-17 11:29:04,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-17 11:29:04,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 135 transitions. [2023-11-17 11:29:04,366 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5357142857142857 [2023-11-17 11:29:04,366 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 135 transitions. [2023-11-17 11:29:04,366 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 135 transitions. [2023-11-17 11:29:04,366 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:29:04,366 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 135 transitions. [2023-11-17 11:29:04,366 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 33.75) internal successors, (135), 4 states have internal predecessors, (135), 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 11:29:04,367 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 63.0) internal successors, (315), 5 states have internal predecessors, (315), 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 11:29:04,367 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 63.0) internal successors, (315), 5 states have internal predecessors, (315), 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 11:29:04,367 INFO L175 Difference]: Start difference. First operand has 42 places, 36 transitions, 248 flow. Second operand 4 states and 135 transitions. [2023-11-17 11:29:04,367 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 67 transitions, 545 flow [2023-11-17 11:29:04,375 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 67 transitions, 539 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-17 11:29:04,376 INFO L231 Difference]: Finished difference. Result has 47 places, 46 transitions, 433 flow [2023-11-17 11:29:04,376 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=244, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=433, PETRI_PLACES=47, PETRI_TRANSITIONS=46} [2023-11-17 11:29:04,377 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 14 predicate places. [2023-11-17 11:29:04,377 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 46 transitions, 433 flow [2023-11-17 11:29:04,377 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 11:29:04,377 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:29:04,377 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:29:04,378 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-17 11:29:04,378 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 2 more)] === [2023-11-17 11:29:04,378 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:29:04,378 INFO L85 PathProgramCache]: Analyzing trace with hash -183849143, now seen corresponding path program 1 times [2023-11-17 11:29:04,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:29:04,378 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [120201169] [2023-11-17 11:29:04,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:29:04,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:29:04,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:29:04,438 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 11:29:04,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:29:04,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [120201169] [2023-11-17 11:29:04,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [120201169] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:29:04,438 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:29:04,438 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-17 11:29:04,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703973675] [2023-11-17 11:29:04,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:29:04,439 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-17 11:29:04,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:29:04,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-17 11:29:04,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-17 11:29:04,439 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 63 [2023-11-17 11:29:04,440 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 46 transitions, 433 flow. Second operand has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 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 11:29:04,440 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:29:04,440 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 63 [2023-11-17 11:29:04,440 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:29:04,718 INFO L124 PetriNetUnfolderBase]: 2552/3855 cut-off events. [2023-11-17 11:29:04,719 INFO L125 PetriNetUnfolderBase]: For 13569/13569 co-relation queries the response was YES. [2023-11-17 11:29:04,727 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14315 conditions, 3855 events. 2552/3855 cut-off events. For 13569/13569 co-relation queries the response was YES. Maximal size of possible extension queue 220. Compared 20056 event pairs, 858 based on Foata normal form. 114/3969 useless extension candidates. Maximal degree in co-relation 14292. Up to 1752 conditions per place. [2023-11-17 11:29:04,737 INFO L140 encePairwiseOnDemand]: 59/63 looper letters, 49 selfloop transitions, 8 changer transitions 25/82 dead transitions. [2023-11-17 11:29:04,738 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 82 transitions, 790 flow [2023-11-17 11:29:04,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-17 11:29:04,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-17 11:29:04,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 177 transitions. [2023-11-17 11:29:04,739 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5619047619047619 [2023-11-17 11:29:04,739 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 177 transitions. [2023-11-17 11:29:04,739 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 177 transitions. [2023-11-17 11:29:04,739 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:29:04,739 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 177 transitions. [2023-11-17 11:29:04,739 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 35.4) internal successors, (177), 5 states have internal predecessors, (177), 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 11:29:04,740 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 63.0) internal successors, (378), 6 states have internal predecessors, (378), 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 11:29:04,740 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 63.0) internal successors, (378), 6 states have internal predecessors, (378), 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 11:29:04,740 INFO L175 Difference]: Start difference. First operand has 47 places, 46 transitions, 433 flow. Second operand 5 states and 177 transitions. [2023-11-17 11:29:04,740 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 82 transitions, 790 flow [2023-11-17 11:29:04,757 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 82 transitions, 790 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-17 11:29:04,758 INFO L231 Difference]: Finished difference. Result has 54 places, 44 transitions, 436 flow [2023-11-17 11:29:04,758 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=433, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=436, PETRI_PLACES=54, PETRI_TRANSITIONS=44} [2023-11-17 11:29:04,759 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 21 predicate places. [2023-11-17 11:29:04,759 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 44 transitions, 436 flow [2023-11-17 11:29:04,759 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 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 11:29:04,759 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:29:04,759 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:29:04,759 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-17 11:29:04,759 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 2 more)] === [2023-11-17 11:29:04,759 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:29:04,760 INFO L85 PathProgramCache]: Analyzing trace with hash -1671281863, now seen corresponding path program 1 times [2023-11-17 11:29:04,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:29:04,760 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [897580691] [2023-11-17 11:29:04,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:29:04,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:29:04,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:29:04,897 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 11:29:04,897 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:29:04,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [897580691] [2023-11-17 11:29:04,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [897580691] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:29:04,897 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:29:04,897 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-17 11:29:04,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332446340] [2023-11-17 11:29:04,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:29:04,898 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-17 11:29:04,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:29:04,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-17 11:29:04,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-17 11:29:04,899 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 63 [2023-11-17 11:29:04,899 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 44 transitions, 436 flow. Second operand has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 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 11:29:04,899 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:29:04,899 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 63 [2023-11-17 11:29:04,899 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:29:05,235 INFO L124 PetriNetUnfolderBase]: 1703/2568 cut-off events. [2023-11-17 11:29:05,235 INFO L125 PetriNetUnfolderBase]: For 11755/11755 co-relation queries the response was YES. [2023-11-17 11:29:05,241 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10223 conditions, 2568 events. 1703/2568 cut-off events. For 11755/11755 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 11811 event pairs, 211 based on Foata normal form. 6/2574 useless extension candidates. Maximal degree in co-relation 10196. Up to 1239 conditions per place. [2023-11-17 11:29:05,249 INFO L140 encePairwiseOnDemand]: 56/63 looper letters, 43 selfloop transitions, 27 changer transitions 1/71 dead transitions. [2023-11-17 11:29:05,249 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 71 transitions, 801 flow [2023-11-17 11:29:05,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-17 11:29:05,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-17 11:29:05,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 128 transitions. [2023-11-17 11:29:05,250 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5079365079365079 [2023-11-17 11:29:05,250 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 128 transitions. [2023-11-17 11:29:05,250 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 128 transitions. [2023-11-17 11:29:05,250 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:29:05,250 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 128 transitions. [2023-11-17 11:29:05,250 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 32.0) internal successors, (128), 4 states have internal predecessors, (128), 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 11:29:05,251 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 63.0) internal successors, (315), 5 states have internal predecessors, (315), 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 11:29:05,251 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 63.0) internal successors, (315), 5 states have internal predecessors, (315), 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 11:29:05,251 INFO L175 Difference]: Start difference. First operand has 54 places, 44 transitions, 436 flow. Second operand 4 states and 128 transitions. [2023-11-17 11:29:05,251 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 71 transitions, 801 flow [2023-11-17 11:29:05,278 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 71 transitions, 782 flow, removed 3 selfloop flow, removed 3 redundant places. [2023-11-17 11:29:05,279 INFO L231 Difference]: Finished difference. Result has 55 places, 55 transitions, 692 flow [2023-11-17 11:29:05,279 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=422, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=692, PETRI_PLACES=55, PETRI_TRANSITIONS=55} [2023-11-17 11:29:05,279 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 22 predicate places. [2023-11-17 11:29:05,280 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 55 transitions, 692 flow [2023-11-17 11:29:05,280 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 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 11:29:05,280 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:29:05,280 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:29:05,280 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-17 11:29:05,280 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 2 more)] === [2023-11-17 11:29:05,280 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:29:05,280 INFO L85 PathProgramCache]: Analyzing trace with hash -270130248, now seen corresponding path program 1 times [2023-11-17 11:29:05,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:29:05,281 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1951364572] [2023-11-17 11:29:05,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:29:05,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:29:05,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:29:05,353 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 11:29:05,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:29:05,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1951364572] [2023-11-17 11:29:05,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1951364572] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:29:05,353 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:29:05,353 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-17 11:29:05,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023339765] [2023-11-17 11:29:05,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:29:05,354 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-17 11:29:05,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:29:05,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-17 11:29:05,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-17 11:29:05,354 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 63 [2023-11-17 11:29:05,355 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 55 transitions, 692 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 11:29:05,355 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:29:05,355 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 63 [2023-11-17 11:29:05,355 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:29:05,622 INFO L124 PetriNetUnfolderBase]: 2355/3580 cut-off events. [2023-11-17 11:29:05,622 INFO L125 PetriNetUnfolderBase]: For 19840/19840 co-relation queries the response was YES. [2023-11-17 11:29:05,631 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14777 conditions, 3580 events. 2355/3580 cut-off events. For 19840/19840 co-relation queries the response was YES. Maximal size of possible extension queue 195. Compared 18101 event pairs, 457 based on Foata normal form. 48/3628 useless extension candidates. Maximal degree in co-relation 14748. Up to 1696 conditions per place. [2023-11-17 11:29:05,638 INFO L140 encePairwiseOnDemand]: 56/63 looper letters, 49 selfloop transitions, 17 changer transitions 27/93 dead transitions. [2023-11-17 11:29:05,638 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 93 transitions, 1183 flow [2023-11-17 11:29:05,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-17 11:29:05,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-17 11:29:05,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 160 transitions. [2023-11-17 11:29:05,639 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5079365079365079 [2023-11-17 11:29:05,639 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 160 transitions. [2023-11-17 11:29:05,639 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 160 transitions. [2023-11-17 11:29:05,639 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:29:05,639 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 160 transitions. [2023-11-17 11:29:05,640 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 32.0) internal successors, (160), 5 states have internal predecessors, (160), 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 11:29:05,640 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 63.0) internal successors, (378), 6 states have internal predecessors, (378), 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 11:29:05,640 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 63.0) internal successors, (378), 6 states have internal predecessors, (378), 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 11:29:05,640 INFO L175 Difference]: Start difference. First operand has 55 places, 55 transitions, 692 flow. Second operand 5 states and 160 transitions. [2023-11-17 11:29:05,640 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 93 transitions, 1183 flow [2023-11-17 11:29:05,659 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 93 transitions, 1183 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-17 11:29:05,660 INFO L231 Difference]: Finished difference. Result has 60 places, 44 transitions, 548 flow [2023-11-17 11:29:05,660 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=692, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=548, PETRI_PLACES=60, PETRI_TRANSITIONS=44} [2023-11-17 11:29:05,660 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 27 predicate places. [2023-11-17 11:29:05,661 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 44 transitions, 548 flow [2023-11-17 11:29:05,661 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 11:29:05,661 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:29:05,661 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:29:05,661 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-17 11:29:05,661 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 2 more)] === [2023-11-17 11:29:05,661 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:29:05,661 INFO L85 PathProgramCache]: Analyzing trace with hash -1838303996, now seen corresponding path program 1 times [2023-11-17 11:29:05,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:29:05,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1993064016] [2023-11-17 11:29:05,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:29:05,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:29:05,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:29:05,725 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 11:29:05,725 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:29:05,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1993064016] [2023-11-17 11:29:05,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1993064016] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:29:05,726 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:29:05,726 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-17 11:29:05,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1133696309] [2023-11-17 11:29:05,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:29:05,726 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-17 11:29:05,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:29:05,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-17 11:29:05,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-17 11:29:05,727 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 63 [2023-11-17 11:29:05,727 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 44 transitions, 548 flow. Second operand has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 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 11:29:05,727 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:29:05,727 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 63 [2023-11-17 11:29:05,727 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:29:05,936 INFO L124 PetriNetUnfolderBase]: 1431/2196 cut-off events. [2023-11-17 11:29:05,936 INFO L125 PetriNetUnfolderBase]: For 12719/12719 co-relation queries the response was YES. [2023-11-17 11:29:05,943 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9318 conditions, 2196 events. 1431/2196 cut-off events. For 12719/12719 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 10532 event pairs, 352 based on Foata normal form. 36/2232 useless extension candidates. Maximal degree in co-relation 9286. Up to 1116 conditions per place. [2023-11-17 11:29:05,950 INFO L140 encePairwiseOnDemand]: 56/63 looper letters, 42 selfloop transitions, 17 changer transitions 6/65 dead transitions. [2023-11-17 11:29:05,950 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 65 transitions, 806 flow [2023-11-17 11:29:05,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-17 11:29:05,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-17 11:29:05,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 129 transitions. [2023-11-17 11:29:05,952 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5119047619047619 [2023-11-17 11:29:05,952 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 129 transitions. [2023-11-17 11:29:05,952 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 129 transitions. [2023-11-17 11:29:05,952 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:29:05,952 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 129 transitions. [2023-11-17 11:29:05,952 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 32.25) internal successors, (129), 4 states have internal predecessors, (129), 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 11:29:05,953 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 63.0) internal successors, (315), 5 states have internal predecessors, (315), 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 11:29:05,953 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 63.0) internal successors, (315), 5 states have internal predecessors, (315), 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 11:29:05,953 INFO L175 Difference]: Start difference. First operand has 60 places, 44 transitions, 548 flow. Second operand 4 states and 129 transitions. [2023-11-17 11:29:05,953 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 65 transitions, 806 flow [2023-11-17 11:29:05,965 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 65 transitions, 689 flow, removed 3 selfloop flow, removed 8 redundant places. [2023-11-17 11:29:05,967 INFO L231 Difference]: Finished difference. Result has 58 places, 41 transitions, 491 flow [2023-11-17 11:29:05,967 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=449, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=491, PETRI_PLACES=58, PETRI_TRANSITIONS=41} [2023-11-17 11:29:05,969 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 25 predicate places. [2023-11-17 11:29:05,969 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 41 transitions, 491 flow [2023-11-17 11:29:05,969 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 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 11:29:05,969 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:29:05,969 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:29:05,970 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-17 11:29:05,970 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 2 more)] === [2023-11-17 11:29:05,973 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:29:05,973 INFO L85 PathProgramCache]: Analyzing trace with hash -1332701262, now seen corresponding path program 2 times [2023-11-17 11:29:05,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:29:05,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [533533768] [2023-11-17 11:29:05,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:29:05,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:29:06,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:29:06,078 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 11:29:06,078 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:29:06,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [533533768] [2023-11-17 11:29:06,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [533533768] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:29:06,080 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:29:06,080 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-17 11:29:06,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664766134] [2023-11-17 11:29:06,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:29:06,080 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-17 11:29:06,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:29:06,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-17 11:29:06,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-17 11:29:06,081 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 63 [2023-11-17 11:29:06,081 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 41 transitions, 491 flow. Second operand has 4 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 11:29:06,081 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:29:06,081 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 63 [2023-11-17 11:29:06,081 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:29:06,269 INFO L124 PetriNetUnfolderBase]: 1188/1940 cut-off events. [2023-11-17 11:29:06,270 INFO L125 PetriNetUnfolderBase]: For 11749/11797 co-relation queries the response was YES. [2023-11-17 11:29:06,274 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7575 conditions, 1940 events. 1188/1940 cut-off events. For 11749/11797 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 10602 event pairs, 140 based on Foata normal form. 78/2006 useless extension candidates. Maximal degree in co-relation 7544. Up to 1018 conditions per place. [2023-11-17 11:29:06,278 INFO L140 encePairwiseOnDemand]: 56/63 looper letters, 74 selfloop transitions, 6 changer transitions 5/90 dead transitions. [2023-11-17 11:29:06,279 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 90 transitions, 1221 flow [2023-11-17 11:29:06,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-17 11:29:06,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-17 11:29:06,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 136 transitions. [2023-11-17 11:29:06,280 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5396825396825397 [2023-11-17 11:29:06,280 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 136 transitions. [2023-11-17 11:29:06,280 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 136 transitions. [2023-11-17 11:29:06,280 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:29:06,280 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 136 transitions. [2023-11-17 11:29:06,280 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 34.0) internal successors, (136), 4 states have internal predecessors, (136), 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 11:29:06,281 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 63.0) internal successors, (315), 5 states have internal predecessors, (315), 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 11:29:06,281 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 63.0) internal successors, (315), 5 states have internal predecessors, (315), 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 11:29:06,281 INFO L175 Difference]: Start difference. First operand has 58 places, 41 transitions, 491 flow. Second operand 4 states and 136 transitions. [2023-11-17 11:29:06,281 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 90 transitions, 1221 flow [2023-11-17 11:29:06,289 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 90 transitions, 1141 flow, removed 6 selfloop flow, removed 2 redundant places. [2023-11-17 11:29:06,290 INFO L231 Difference]: Finished difference. Result has 61 places, 45 transitions, 499 flow [2023-11-17 11:29:06,290 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=457, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=499, PETRI_PLACES=61, PETRI_TRANSITIONS=45} [2023-11-17 11:29:06,290 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 28 predicate places. [2023-11-17 11:29:06,291 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 45 transitions, 499 flow [2023-11-17 11:29:06,291 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 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 11:29:06,291 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:29:06,291 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:29:06,291 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-17 11:29:06,291 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 2 more)] === [2023-11-17 11:29:06,291 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:29:06,291 INFO L85 PathProgramCache]: Analyzing trace with hash -1153644752, now seen corresponding path program 1 times [2023-11-17 11:29:06,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:29:06,292 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [369969915] [2023-11-17 11:29:06,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:29:06,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:29:06,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:29:06,373 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 11:29:06,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:29:06,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [369969915] [2023-11-17 11:29:06,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [369969915] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:29:06,373 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:29:06,373 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-17 11:29:06,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [51992376] [2023-11-17 11:29:06,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:29:06,374 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-17 11:29:06,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:29:06,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-17 11:29:06,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-17 11:29:06,374 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 63 [2023-11-17 11:29:06,375 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 45 transitions, 499 flow. Second operand has 5 states, 5 states have (on average 26.0) internal successors, (130), 5 states have internal predecessors, (130), 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 11:29:06,375 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:29:06,375 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 63 [2023-11-17 11:29:06,375 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:29:06,524 INFO L124 PetriNetUnfolderBase]: 873/1474 cut-off events. [2023-11-17 11:29:06,524 INFO L125 PetriNetUnfolderBase]: For 8450/8544 co-relation queries the response was YES. [2023-11-17 11:29:06,528 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6729 conditions, 1474 events. 873/1474 cut-off events. For 8450/8544 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 7846 event pairs, 49 based on Foata normal form. 92/1558 useless extension candidates. Maximal degree in co-relation 6696. Up to 800 conditions per place. [2023-11-17 11:29:06,531 INFO L140 encePairwiseOnDemand]: 56/63 looper letters, 82 selfloop transitions, 10 changer transitions 7/104 dead transitions. [2023-11-17 11:29:06,531 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 104 transitions, 1342 flow [2023-11-17 11:29:06,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-17 11:29:06,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-17 11:29:06,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 170 transitions. [2023-11-17 11:29:06,532 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5396825396825397 [2023-11-17 11:29:06,532 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 170 transitions. [2023-11-17 11:29:06,532 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 170 transitions. [2023-11-17 11:29:06,533 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:29:06,533 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 170 transitions. [2023-11-17 11:29:06,533 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 34.0) internal successors, (170), 5 states have internal predecessors, (170), 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 11:29:06,533 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 63.0) internal successors, (378), 6 states have internal predecessors, (378), 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 11:29:06,534 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 63.0) internal successors, (378), 6 states have internal predecessors, (378), 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 11:29:06,534 INFO L175 Difference]: Start difference. First operand has 61 places, 45 transitions, 499 flow. Second operand 5 states and 170 transitions. [2023-11-17 11:29:06,534 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 104 transitions, 1342 flow [2023-11-17 11:29:06,540 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 104 transitions, 1331 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-11-17 11:29:06,541 INFO L231 Difference]: Finished difference. Result has 65 places, 49 transitions, 551 flow [2023-11-17 11:29:06,541 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=490, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=551, PETRI_PLACES=65, PETRI_TRANSITIONS=49} [2023-11-17 11:29:06,541 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 32 predicate places. [2023-11-17 11:29:06,542 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 49 transitions, 551 flow [2023-11-17 11:29:06,542 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.0) internal successors, (130), 5 states have internal predecessors, (130), 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 11:29:06,542 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:29:06,542 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:29:06,542 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-17 11:29:06,542 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-17 11:29:06,542 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:29:06,542 INFO L85 PathProgramCache]: Analyzing trace with hash -1403244155, now seen corresponding path program 1 times [2023-11-17 11:29:06,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:29:06,542 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [682984002] [2023-11-17 11:29:06,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:29:06,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:29:06,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:29:06,610 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 11:29:06,610 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:29:06,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [682984002] [2023-11-17 11:29:06,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [682984002] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:29:06,610 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:29:06,610 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-17 11:29:06,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224389439] [2023-11-17 11:29:06,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:29:06,611 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-17 11:29:06,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:29:06,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-17 11:29:06,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-17 11:29:06,611 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 63 [2023-11-17 11:29:06,612 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 49 transitions, 551 flow. Second operand has 6 states, 6 states have (on average 25.666666666666668) internal successors, (154), 6 states have internal predecessors, (154), 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 11:29:06,612 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:29:06,612 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 63 [2023-11-17 11:29:06,612 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:29:06,748 INFO L124 PetriNetUnfolderBase]: 567/997 cut-off events. [2023-11-17 11:29:06,749 INFO L125 PetriNetUnfolderBase]: For 6340/6459 co-relation queries the response was YES. [2023-11-17 11:29:06,751 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5261 conditions, 997 events. 567/997 cut-off events. For 6340/6459 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 4991 event pairs, 22 based on Foata normal form. 67/1056 useless extension candidates. Maximal degree in co-relation 5226. Up to 524 conditions per place. [2023-11-17 11:29:06,754 INFO L140 encePairwiseOnDemand]: 56/63 looper letters, 81 selfloop transitions, 14 changer transitions 14/113 dead transitions. [2023-11-17 11:29:06,754 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 113 transitions, 1453 flow [2023-11-17 11:29:06,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-17 11:29:06,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-17 11:29:06,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 204 transitions. [2023-11-17 11:29:06,755 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5396825396825397 [2023-11-17 11:29:06,755 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 204 transitions. [2023-11-17 11:29:06,755 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 204 transitions. [2023-11-17 11:29:06,755 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:29:06,755 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 204 transitions. [2023-11-17 11:29:06,755 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 34.0) internal successors, (204), 6 states have internal predecessors, (204), 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 11:29:06,756 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 63.0) internal successors, (441), 7 states have internal predecessors, (441), 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 11:29:06,756 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 63.0) internal successors, (441), 7 states have internal predecessors, (441), 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 11:29:06,756 INFO L175 Difference]: Start difference. First operand has 65 places, 49 transitions, 551 flow. Second operand 6 states and 204 transitions. [2023-11-17 11:29:06,756 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 113 transitions, 1453 flow [2023-11-17 11:29:06,764 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 113 transitions, 1423 flow, removed 5 selfloop flow, removed 4 redundant places. [2023-11-17 11:29:06,765 INFO L231 Difference]: Finished difference. Result has 68 places, 51 transitions, 585 flow [2023-11-17 11:29:06,765 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=524, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=585, PETRI_PLACES=68, PETRI_TRANSITIONS=51} [2023-11-17 11:29:06,766 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 35 predicate places. [2023-11-17 11:29:06,766 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 51 transitions, 585 flow [2023-11-17 11:29:06,766 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 25.666666666666668) internal successors, (154), 6 states have internal predecessors, (154), 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 11:29:06,766 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:29:06,766 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:29:06,766 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-17 11:29:06,766 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-17 11:29:06,767 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:29:06,767 INFO L85 PathProgramCache]: Analyzing trace with hash -1964275881, now seen corresponding path program 1 times [2023-11-17 11:29:06,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:29:06,767 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [922746605] [2023-11-17 11:29:06,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:29:06,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:29:06,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:29:06,841 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 11:29:06,841 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:29:06,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [922746605] [2023-11-17 11:29:06,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [922746605] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:29:06,842 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:29:06,842 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-17 11:29:06,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682478431] [2023-11-17 11:29:06,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:29:06,842 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-17 11:29:06,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:29:06,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-17 11:29:06,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-17 11:29:06,843 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 63 [2023-11-17 11:29:06,843 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 51 transitions, 585 flow. Second operand has 5 states, 5 states have (on average 24.6) internal successors, (123), 5 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 11:29:06,843 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:29:06,843 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 63 [2023-11-17 11:29:06,843 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:29:06,975 INFO L124 PetriNetUnfolderBase]: 474/836 cut-off events. [2023-11-17 11:29:06,975 INFO L125 PetriNetUnfolderBase]: For 6157/6157 co-relation queries the response was YES. [2023-11-17 11:29:06,977 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4969 conditions, 836 events. 474/836 cut-off events. For 6157/6157 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 3756 event pairs, 55 based on Foata normal form. 6/842 useless extension candidates. Maximal degree in co-relation 4933. Up to 333 conditions per place. [2023-11-17 11:29:06,979 INFO L140 encePairwiseOnDemand]: 55/63 looper letters, 52 selfloop transitions, 15 changer transitions 60/127 dead transitions. [2023-11-17 11:29:06,979 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 127 transitions, 1466 flow [2023-11-17 11:29:06,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-17 11:29:06,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-17 11:29:06,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 185 transitions. [2023-11-17 11:29:06,980 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4894179894179894 [2023-11-17 11:29:06,980 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 185 transitions. [2023-11-17 11:29:06,980 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 185 transitions. [2023-11-17 11:29:06,980 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:29:06,980 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 185 transitions. [2023-11-17 11:29:06,981 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 30.833333333333332) internal successors, (185), 6 states have internal predecessors, (185), 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 11:29:06,981 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 63.0) internal successors, (441), 7 states have internal predecessors, (441), 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 11:29:06,981 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 63.0) internal successors, (441), 7 states have internal predecessors, (441), 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 11:29:06,981 INFO L175 Difference]: Start difference. First operand has 68 places, 51 transitions, 585 flow. Second operand 6 states and 185 transitions. [2023-11-17 11:29:06,981 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 127 transitions, 1466 flow [2023-11-17 11:29:06,991 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 127 transitions, 1234 flow, removed 41 selfloop flow, removed 8 redundant places. [2023-11-17 11:29:06,992 INFO L231 Difference]: Finished difference. Result has 67 places, 45 transitions, 463 flow [2023-11-17 11:29:06,992 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=506, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=463, PETRI_PLACES=67, PETRI_TRANSITIONS=45} [2023-11-17 11:29:06,993 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 34 predicate places. [2023-11-17 11:29:06,993 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 45 transitions, 463 flow [2023-11-17 11:29:06,993 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.6) internal successors, (123), 5 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 11:29:06,993 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:29:06,993 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:29:06,993 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-17 11:29:06,993 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-17 11:29:06,994 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:29:06,994 INFO L85 PathProgramCache]: Analyzing trace with hash -2063396635, now seen corresponding path program 2 times [2023-11-17 11:29:06,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:29:06,994 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1712394312] [2023-11-17 11:29:06,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:29:06,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:29:07,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:29:07,071 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 11:29:07,072 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:29:07,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1712394312] [2023-11-17 11:29:07,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1712394312] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:29:07,072 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:29:07,072 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-17 11:29:07,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987979597] [2023-11-17 11:29:07,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:29:07,072 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-17 11:29:07,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:29:07,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-17 11:29:07,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-17 11:29:07,073 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 63 [2023-11-17 11:29:07,073 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 45 transitions, 463 flow. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 7 states have internal predecessors, (179), 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 11:29:07,073 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:29:07,073 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 63 [2023-11-17 11:29:07,073 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:29:07,174 INFO L124 PetriNetUnfolderBase]: 239/450 cut-off events. [2023-11-17 11:29:07,174 INFO L125 PetriNetUnfolderBase]: For 3022/3081 co-relation queries the response was YES. [2023-11-17 11:29:07,175 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2304 conditions, 450 events. 239/450 cut-off events. For 3022/3081 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1838 event pairs, 16 based on Foata normal form. 30/475 useless extension candidates. Maximal degree in co-relation 2272. Up to 139 conditions per place. [2023-11-17 11:29:07,176 INFO L140 encePairwiseOnDemand]: 56/63 looper letters, 21 selfloop transitions, 18 changer transitions 36/76 dead transitions. [2023-11-17 11:29:07,176 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 76 transitions, 982 flow [2023-11-17 11:29:07,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-17 11:29:07,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-17 11:29:07,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 215 transitions. [2023-11-17 11:29:07,177 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4875283446712018 [2023-11-17 11:29:07,177 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 215 transitions. [2023-11-17 11:29:07,177 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 215 transitions. [2023-11-17 11:29:07,177 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:29:07,177 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 215 transitions. [2023-11-17 11:29:07,178 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 30.714285714285715) internal successors, (215), 7 states have internal predecessors, (215), 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 11:29:07,178 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 63.0) internal successors, (504), 8 states have internal predecessors, (504), 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 11:29:07,179 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 63.0) internal successors, (504), 8 states have internal predecessors, (504), 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 11:29:07,179 INFO L175 Difference]: Start difference. First operand has 67 places, 45 transitions, 463 flow. Second operand 7 states and 215 transitions. [2023-11-17 11:29:07,179 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 76 transitions, 982 flow [2023-11-17 11:29:07,183 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 76 transitions, 840 flow, removed 6 selfloop flow, removed 9 redundant places. [2023-11-17 11:29:07,184 INFO L231 Difference]: Finished difference. Result has 64 places, 32 transitions, 286 flow [2023-11-17 11:29:07,184 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=390, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=286, PETRI_PLACES=64, PETRI_TRANSITIONS=32} [2023-11-17 11:29:07,185 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 31 predicate places. [2023-11-17 11:29:07,185 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 32 transitions, 286 flow [2023-11-17 11:29:07,185 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 7 states have internal predecessors, (179), 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 11:29:07,185 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:29:07,185 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:29:07,185 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-17 11:29:07,185 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-17 11:29:07,185 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:29:07,185 INFO L85 PathProgramCache]: Analyzing trace with hash 1672764079, now seen corresponding path program 1 times [2023-11-17 11:29:07,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:29:07,186 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1705928322] [2023-11-17 11:29:07,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:29:07,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:29:07,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:29:07,271 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 11:29:07,271 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:29:07,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1705928322] [2023-11-17 11:29:07,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1705928322] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:29:07,271 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:29:07,271 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-17 11:29:07,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670616774] [2023-11-17 11:29:07,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:29:07,272 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-17 11:29:07,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:29:07,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-17 11:29:07,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-17 11:29:07,272 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 63 [2023-11-17 11:29:07,272 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 32 transitions, 286 flow. Second operand has 5 states, 5 states have (on average 25.0) internal successors, (125), 5 states have internal predecessors, (125), 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 11:29:07,272 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:29:07,272 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 63 [2023-11-17 11:29:07,273 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:29:07,299 INFO L124 PetriNetUnfolderBase]: 44/94 cut-off events. [2023-11-17 11:29:07,299 INFO L125 PetriNetUnfolderBase]: For 494/494 co-relation queries the response was YES. [2023-11-17 11:29:07,299 INFO L83 FinitePrefix]: Finished finitePrefix Result has 545 conditions, 94 events. 44/94 cut-off events. For 494/494 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 184 event pairs, 14 based on Foata normal form. 1/95 useless extension candidates. Maximal degree in co-relation 513. Up to 57 conditions per place. [2023-11-17 11:29:07,299 INFO L140 encePairwiseOnDemand]: 60/63 looper letters, 0 selfloop transitions, 0 changer transitions 35/35 dead transitions. [2023-11-17 11:29:07,299 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 35 transitions, 368 flow [2023-11-17 11:29:07,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-17 11:29:07,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-17 11:29:07,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 106 transitions. [2023-11-17 11:29:07,300 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42063492063492064 [2023-11-17 11:29:07,300 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 106 transitions. [2023-11-17 11:29:07,300 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 106 transitions. [2023-11-17 11:29:07,300 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:29:07,301 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 106 transitions. [2023-11-17 11:29:07,301 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 11:29:07,301 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 63.0) internal successors, (315), 5 states have internal predecessors, (315), 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 11:29:07,301 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 63.0) internal successors, (315), 5 states have internal predecessors, (315), 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 11:29:07,301 INFO L175 Difference]: Start difference. First operand has 64 places, 32 transitions, 286 flow. Second operand 4 states and 106 transitions. [2023-11-17 11:29:07,301 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 35 transitions, 368 flow [2023-11-17 11:29:07,302 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 35 transitions, 198 flow, removed 17 selfloop flow, removed 29 redundant places. [2023-11-17 11:29:07,303 INFO L231 Difference]: Finished difference. Result has 37 places, 0 transitions, 0 flow [2023-11-17 11:29:07,303 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=112, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=37, PETRI_TRANSITIONS=0} [2023-11-17 11:29:07,303 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 4 predicate places. [2023-11-17 11:29:07,303 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 0 transitions, 0 flow [2023-11-17 11:29:07,304 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 25.0) internal successors, (125), 5 states have internal predecessors, (125), 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 11:29:07,307 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (4 of 5 remaining) [2023-11-17 11:29:07,307 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 5 remaining) [2023-11-17 11:29:07,307 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 5 remaining) [2023-11-17 11:29:07,307 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 5 remaining) [2023-11-17 11:29:07,307 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 5 remaining) [2023-11-17 11:29:07,307 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-17 11:29:07,307 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:29:07,310 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-17 11:29:07,310 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-17 11:29:07,313 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.11 11:29:07 BasicIcfg [2023-11-17 11:29:07,313 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-17 11:29:07,314 INFO L158 Benchmark]: Toolchain (without parser) took 6200.16ms. Allocated memory was 163.6MB in the beginning and 399.5MB in the end (delta: 235.9MB). Free memory was 111.7MB in the beginning and 220.4MB in the end (delta: -108.7MB). Peak memory consumption was 129.8MB. Max. memory is 8.0GB. [2023-11-17 11:29:07,314 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 163.6MB. Free memory is still 116.5MB. There was no memory consumed. Max. memory is 8.0GB. [2023-11-17 11:29:07,314 INFO L158 Benchmark]: CACSL2BoogieTranslator took 383.87ms. Allocated memory is still 163.6MB. Free memory was 111.6MB in the beginning and 91.0MB in the end (delta: 20.6MB). Peak memory consumption was 21.0MB. Max. memory is 8.0GB. [2023-11-17 11:29:07,314 INFO L158 Benchmark]: Boogie Procedure Inliner took 55.82ms. Allocated memory is still 163.6MB. Free memory was 91.0MB in the beginning and 88.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-11-17 11:29:07,314 INFO L158 Benchmark]: Boogie Preprocessor took 19.99ms. Allocated memory is still 163.6MB. Free memory was 88.9MB in the beginning and 87.2MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-11-17 11:29:07,314 INFO L158 Benchmark]: RCFGBuilder took 555.56ms. Allocated memory was 163.6MB in the beginning and 233.8MB in the end (delta: 70.3MB). Free memory was 87.2MB in the beginning and 187.9MB in the end (delta: -100.7MB). Peak memory consumption was 20.7MB. Max. memory is 8.0GB. [2023-11-17 11:29:07,315 INFO L158 Benchmark]: TraceAbstraction took 5177.90ms. Allocated memory was 233.8MB in the beginning and 399.5MB in the end (delta: 165.7MB). Free memory was 186.9MB in the beginning and 220.4MB in the end (delta: -33.6MB). Peak memory consumption was 132.1MB. Max. memory is 8.0GB. [2023-11-17 11:29:07,315 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 163.6MB. Free memory is still 116.5MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 383.87ms. Allocated memory is still 163.6MB. Free memory was 111.6MB in the beginning and 91.0MB in the end (delta: 20.6MB). Peak memory consumption was 21.0MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 55.82ms. Allocated memory is still 163.6MB. Free memory was 91.0MB in the beginning and 88.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 19.99ms. Allocated memory is still 163.6MB. Free memory was 88.9MB in the beginning and 87.2MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 555.56ms. Allocated memory was 163.6MB in the beginning and 233.8MB in the end (delta: 70.3MB). Free memory was 87.2MB in the beginning and 187.9MB in the end (delta: -100.7MB). Peak memory consumption was 20.7MB. Max. memory is 8.0GB. * TraceAbstraction took 5177.90ms. Allocated memory was 233.8MB in the beginning and 399.5MB in the end (delta: 165.7MB). Free memory was 186.9MB in the beginning and 220.4MB in the end (delta: -33.6MB). Peak memory consumption was 132.1MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 0.4s, 51 PlacesBefore, 33 PlacesAfterwards, 38 TransitionsBefore, 20 TransitionsAfterwards, 850 CoEnabledTransitionPairs, 3 FixpointIterations, 0 TrivialSequentialCompositions, 18 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 18 TotalNumberOfCompositions, 1208 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 759, independent: 714, independent conditional: 0, independent unconditional: 714, dependent: 45, dependent conditional: 0, dependent unconditional: 45, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 527, independent: 494, independent conditional: 0, independent unconditional: 494, dependent: 33, dependent conditional: 0, dependent unconditional: 33, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 527, independent: 482, independent conditional: 0, independent unconditional: 482, dependent: 45, dependent conditional: 0, dependent unconditional: 45, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 45, independent: 12, independent conditional: 0, independent unconditional: 12, dependent: 33, dependent conditional: 0, dependent unconditional: 33, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 66, independent: 17, independent conditional: 0, independent unconditional: 17, dependent: 49, dependent conditional: 0, dependent unconditional: 49, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 759, independent: 220, independent conditional: 0, independent unconditional: 220, dependent: 12, dependent conditional: 0, dependent unconditional: 12, unknown: 527, unknown conditional: 0, unknown unconditional: 527] , Statistics on independence cache: Total cache size (in pairs): 78, Positive cache size: 66, Positive conditional cache size: 0, Positive unconditional cache size: 66, 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 9 procedures, 75 locations, 5 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: 5.1s, OverallIterations: 14, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 3.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.5s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 460 SdHoareTripleChecker+Valid, 0.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 460 mSDsluCounter, 25 SdHoareTripleChecker+Invalid, 0.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 13 mSDsCounter, 48 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 816 IncrementalHoareTripleChecker+Invalid, 864 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 48 mSolverCounterUnsat, 12 mSDtfsCounter, 816 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 55 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=692occurred in iteration=6, InterpolantAutomatonStates: 65, 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, 1.2s InterpolantComputationTime, 199 NumberOfCodeBlocks, 199 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 185 ConstructedInterpolants, 0 QuantifiedInterpolants, 945 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 14 InterpolantComputations, 14 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 11:29:07,349 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...