/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 -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 15:18:34,289 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-17 15:18:34,367 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 15:18:34,395 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-17 15:18:34,396 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-17 15:18:34,396 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-17 15:18:34,396 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-17 15:18:34,397 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-17 15:18:34,397 INFO L153 SettingsManager]: * Use SBE=true [2023-11-17 15:18:34,400 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-17 15:18:34,400 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-17 15:18:34,401 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-17 15:18:34,401 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-17 15:18:34,402 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-17 15:18:34,402 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-17 15:18:34,402 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-17 15:18:34,402 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-17 15:18:34,402 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-17 15:18:34,402 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-17 15:18:34,402 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-17 15:18:34,403 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-17 15:18:34,403 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-17 15:18:34,403 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-17 15:18:34,404 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-11-17 15:18:34,404 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-17 15:18:34,405 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-17 15:18:34,405 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-17 15:18:34,405 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-17 15:18:34,405 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-17 15:18:34,405 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-17 15:18:34,406 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-17 15:18:34,406 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-17 15:18:34,406 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-11-17 15:18:34,600 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-17 15:18:34,613 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-17 15:18:34,615 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-17 15:18:34,616 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-17 15:18:34,616 INFO L274 PluginConnector]: CDTParser initialized [2023-11-17 15:18:34,617 INFO L431 ainManager$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 15:18:35,723 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-17 15:18:35,937 INFO L384 CDTParser]: Found 1 translation units. [2023-11-17 15:18:35,941 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 15:18:35,956 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4e4fcb175/aae3363d59af4ad9b029326b4bed2c37/FLAG24a5966c6 [2023-11-17 15:18:35,966 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4e4fcb175/aae3363d59af4ad9b029326b4bed2c37 [2023-11-17 15:18:35,968 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-17 15:18:35,969 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-11-17 15:18:35,970 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-17 15:18:35,970 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-17 15:18:35,975 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-17 15:18:35,976 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 03:18:35" (1/1) ... [2023-11-17 15:18:35,976 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3dfa59ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:18:35, skipping insertion in model container [2023-11-17 15:18:35,977 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 03:18:35" (1/1) ... [2023-11-17 15:18:36,028 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-17 15:18:36,155 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 15:18:36,288 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-17 15:18:36,302 INFO L202 MainTranslator]: Completed pre-run [2023-11-17 15:18:36,313 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 15:18:36,341 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-17 15:18:36,379 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-17 15:18:36,379 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-17 15:18:36,384 INFO L206 MainTranslator]: Completed translation [2023-11-17 15:18:36,385 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:18:36 WrapperNode [2023-11-17 15:18:36,385 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-17 15:18:36,386 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-17 15:18:36,386 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-17 15:18:36,386 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-17 15:18:36,390 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:18:36" (1/1) ... [2023-11-17 15:18:36,419 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:18:36" (1/1) ... [2023-11-17 15:18:36,434 INFO L138 Inliner]: procedures = 177, calls = 62, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 80 [2023-11-17 15:18:36,435 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-17 15:18:36,435 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-17 15:18:36,435 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-17 15:18:36,435 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-17 15:18:36,448 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:18:36" (1/1) ... [2023-11-17 15:18:36,448 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:18:36" (1/1) ... [2023-11-17 15:18:36,451 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:18:36" (1/1) ... [2023-11-17 15:18:36,451 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:18:36" (1/1) ... [2023-11-17 15:18:36,455 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:18:36" (1/1) ... [2023-11-17 15:18:36,457 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:18:36" (1/1) ... [2023-11-17 15:18:36,459 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:18:36" (1/1) ... [2023-11-17 15:18:36,473 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:18:36" (1/1) ... [2023-11-17 15:18:36,475 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-17 15:18:36,476 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-17 15:18:36,476 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-17 15:18:36,476 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-17 15:18:36,476 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:18:36" (1/1) ... [2023-11-17 15:18:36,480 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-17 15:18:36,493 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 15:18:36,516 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 15:18:36,521 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 15:18:36,538 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-17 15:18:36,538 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-17 15:18:36,538 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-17 15:18:36,538 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-17 15:18:36,538 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-17 15:18:36,539 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-11-17 15:18:36,539 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-11-17 15:18:36,539 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-11-17 15:18:36,539 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-11-17 15:18:36,539 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-11-17 15:18:36,539 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-11-17 15:18:36,539 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2023-11-17 15:18:36,539 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2023-11-17 15:18:36,539 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-17 15:18:36,539 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-17 15:18:36,539 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-17 15:18:36,540 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-17 15:18:36,541 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 15:18:36,653 INFO L239 CfgBuilder]: Building ICFG [2023-11-17 15:18:36,654 INFO L265 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-17 15:18:36,772 INFO L280 CfgBuilder]: Performing block encoding [2023-11-17 15:18:36,784 INFO L302 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-17 15:18:36,784 INFO L307 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-17 15:18:36,797 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.11 03:18:36 BoogieIcfgContainer [2023-11-17 15:18:36,797 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-17 15:18:36,799 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-17 15:18:36,799 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-17 15:18:36,801 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-17 15:18:36,801 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.11 03:18:35" (1/3) ... [2023-11-17 15:18:36,802 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a018d6c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 03:18:36, skipping insertion in model container [2023-11-17 15:18:36,802 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:18:36" (2/3) ... [2023-11-17 15:18:36,802 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a018d6c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 03:18:36, skipping insertion in model container [2023-11-17 15:18:36,802 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.11 03:18:36" (3/3) ... [2023-11-17 15:18:36,803 INFO L112 eAbstractionObserver]: Analyzing ICFG safe016_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2023-11-17 15:18:36,817 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-17 15:18:36,817 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-17 15:18:36,817 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-17 15:18:36,918 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-17 15:18:36,954 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 117 places, 106 transitions, 228 flow [2023-11-17 15:18:37,024 INFO L124 PetriNetUnfolderBase]: 2/102 cut-off events. [2023-11-17 15:18:37,024 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-17 15:18:37,028 INFO L83 FinitePrefix]: Finished finitePrefix Result has 115 conditions, 102 events. 2/102 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 59 event pairs, 0 based on Foata normal form. 0/99 useless extension candidates. Maximal degree in co-relation 88. Up to 2 conditions per place. [2023-11-17 15:18:37,028 INFO L82 GeneralOperation]: Start removeDead. Operand has 117 places, 106 transitions, 228 flow [2023-11-17 15:18:37,037 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 97 places, 85 transitions, 182 flow [2023-11-17 15:18:37,040 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2023-11-17 15:18:37,055 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 97 places, 85 transitions, 182 flow [2023-11-17 15:18:37,060 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 97 places, 85 transitions, 182 flow [2023-11-17 15:18:37,061 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 97 places, 85 transitions, 182 flow [2023-11-17 15:18:37,087 INFO L124 PetriNetUnfolderBase]: 1/85 cut-off events. [2023-11-17 15:18:37,087 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-17 15:18:37,088 INFO L83 FinitePrefix]: Finished finitePrefix Result has 98 conditions, 85 events. 1/85 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 52 event pairs, 0 based on Foata normal form. 0/84 useless extension candidates. Maximal degree in co-relation 71. Up to 2 conditions per place. [2023-11-17 15:18:37,090 INFO L119 LiptonReduction]: Number of co-enabled transitions 2002 [2023-11-17 15:18:39,201 INFO L134 LiptonReduction]: Checked pairs total: 2798 [2023-11-17 15:18:39,201 INFO L136 LiptonReduction]: Total number of compositions: 69 [2023-11-17 15:18:39,219 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-17 15:18:39,225 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;@d1816fe, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-17 15:18:39,225 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2023-11-17 15:18:39,229 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-17 15:18:39,229 INFO L124 PetriNetUnfolderBase]: 0/19 cut-off events. [2023-11-17 15:18:39,229 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-17 15:18:39,229 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:18:39,230 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:18:39,230 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 15:18:39,233 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:18:39,233 INFO L85 PathProgramCache]: Analyzing trace with hash 832701360, now seen corresponding path program 1 times [2023-11-17 15:18:39,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:18:39,240 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2127602575] [2023-11-17 15:18:39,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:18:39,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:18:39,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:18:39,603 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 15:18:39,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:18:39,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2127602575] [2023-11-17 15:18:39,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2127602575] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:18:39,604 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:18:39,605 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-17 15:18:39,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293972032] [2023-11-17 15:18:39,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:18:39,611 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-17 15:18:39,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:18:39,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-17 15:18:39,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-17 15:18:39,630 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 175 [2023-11-17 15:18:39,632 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 20 transitions, 52 flow. Second operand has 3 states, 3 states have (on average 91.33333333333333) internal successors, (274), 3 states have internal predecessors, (274), 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 15:18:39,632 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:18:39,632 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 175 [2023-11-17 15:18:39,633 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:18:39,862 INFO L124 PetriNetUnfolderBase]: 2019/2943 cut-off events. [2023-11-17 15:18:39,862 INFO L125 PetriNetUnfolderBase]: For 66/66 co-relation queries the response was YES. [2023-11-17 15:18:39,869 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6086 conditions, 2943 events. 2019/2943 cut-off events. For 66/66 co-relation queries the response was YES. Maximal size of possible extension queue 159. Compared 13602 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 15:18:39,882 INFO L140 encePairwiseOnDemand]: 167/175 looper letters, 30 selfloop transitions, 7 changer transitions 0/37 dead transitions. [2023-11-17 15:18:39,883 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 37 transitions, 169 flow [2023-11-17 15:18:39,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-17 15:18:39,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-17 15:18:39,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 302 transitions. [2023-11-17 15:18:39,897 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5752380952380952 [2023-11-17 15:18:39,898 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 302 transitions. [2023-11-17 15:18:39,898 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 302 transitions. [2023-11-17 15:18:39,899 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:18:39,901 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 302 transitions. [2023-11-17 15:18:39,904 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 100.66666666666667) internal successors, (302), 3 states have internal predecessors, (302), 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 15:18:39,907 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 175.0) internal successors, (700), 4 states have internal predecessors, (700), 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 15:18:39,907 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 175.0) internal successors, (700), 4 states have internal predecessors, (700), 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 15:18:39,909 INFO L175 Difference]: Start difference. First operand has 33 places, 20 transitions, 52 flow. Second operand 3 states and 302 transitions. [2023-11-17 15:18:39,910 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 37 transitions, 169 flow [2023-11-17 15:18:39,915 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 15:18:39,917 INFO L231 Difference]: Finished difference. Result has 33 places, 26 transitions, 102 flow [2023-11-17 15:18:39,918 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=175, 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 15:18:39,921 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 0 predicate places. [2023-11-17 15:18:39,921 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 26 transitions, 102 flow [2023-11-17 15:18:39,922 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 91.33333333333333) internal successors, (274), 3 states have internal predecessors, (274), 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 15:18:39,922 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:18:39,922 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:18:39,922 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-17 15:18:39,923 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 15:18:39,928 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:18:39,929 INFO L85 PathProgramCache]: Analyzing trace with hash 43937493, now seen corresponding path program 1 times [2023-11-17 15:18:39,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:18:39,929 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1147144420] [2023-11-17 15:18:39,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:18:39,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:18:39,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:18:40,087 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 15:18:40,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:18:40,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1147144420] [2023-11-17 15:18:40,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1147144420] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:18:40,088 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:18:40,088 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-17 15:18:40,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510362890] [2023-11-17 15:18:40,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:18:40,089 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-17 15:18:40,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:18:40,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-17 15:18:40,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-17 15:18:40,091 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 175 [2023-11-17 15:18:40,091 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 26 transitions, 102 flow. Second operand has 4 states, 4 states have (on average 90.75) internal successors, (363), 4 states have internal predecessors, (363), 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 15:18:40,091 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:18:40,091 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 175 [2023-11-17 15:18:40,091 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:18:40,295 INFO L124 PetriNetUnfolderBase]: 1886/2759 cut-off events. [2023-11-17 15:18:40,296 INFO L125 PetriNetUnfolderBase]: For 1156/1156 co-relation queries the response was YES. [2023-11-17 15:18:40,300 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7639 conditions, 2759 events. 1886/2759 cut-off events. For 1156/1156 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 12587 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 15:18:40,310 INFO L140 encePairwiseOnDemand]: 167/175 looper letters, 38 selfloop transitions, 8 changer transitions 0/46 dead transitions. [2023-11-17 15:18:40,310 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 46 transitions, 260 flow [2023-11-17 15:18:40,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-17 15:18:40,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-17 15:18:40,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 395 transitions. [2023-11-17 15:18:40,313 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5642857142857143 [2023-11-17 15:18:40,313 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 395 transitions. [2023-11-17 15:18:40,313 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 395 transitions. [2023-11-17 15:18:40,313 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:18:40,313 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 395 transitions. [2023-11-17 15:18:40,314 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 98.75) internal successors, (395), 4 states have internal predecessors, (395), 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 15:18:40,316 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 175.0) internal successors, (875), 5 states have internal predecessors, (875), 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 15:18:40,316 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 175.0) internal successors, (875), 5 states have internal predecessors, (875), 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 15:18:40,316 INFO L175 Difference]: Start difference. First operand has 33 places, 26 transitions, 102 flow. Second operand 4 states and 395 transitions. [2023-11-17 15:18:40,316 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 46 transitions, 260 flow [2023-11-17 15:18:40,321 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 15:18:40,322 INFO L231 Difference]: Finished difference. Result has 37 places, 30 transitions, 146 flow [2023-11-17 15:18:40,322 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=175, 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 15:18:40,323 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 4 predicate places. [2023-11-17 15:18:40,323 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 30 transitions, 146 flow [2023-11-17 15:18:40,323 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 90.75) internal successors, (363), 4 states have internal predecessors, (363), 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 15:18:40,323 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:18:40,324 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:18:40,324 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-17 15:18:40,324 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 15:18:40,324 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:18:40,324 INFO L85 PathProgramCache]: Analyzing trace with hash 43937617, now seen corresponding path program 1 times [2023-11-17 15:18:40,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:18:40,324 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1948187522] [2023-11-17 15:18:40,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:18:40,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:18:40,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:18:40,400 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 15:18:40,400 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:18:40,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1948187522] [2023-11-17 15:18:40,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1948187522] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:18:40,401 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:18:40,401 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-17 15:18:40,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157375703] [2023-11-17 15:18:40,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:18:40,401 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-17 15:18:40,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:18:40,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-17 15:18:40,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-17 15:18:40,402 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 175 [2023-11-17 15:18:40,403 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 30 transitions, 146 flow. Second operand has 4 states, 4 states have (on average 90.75) internal successors, (363), 4 states have internal predecessors, (363), 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 15:18:40,403 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:18:40,403 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 175 [2023-11-17 15:18:40,403 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:18:40,614 INFO L124 PetriNetUnfolderBase]: 1794/2633 cut-off events. [2023-11-17 15:18:40,614 INFO L125 PetriNetUnfolderBase]: For 2488/2488 co-relation queries the response was YES. [2023-11-17 15:18:40,618 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8003 conditions, 2633 events. 1794/2633 cut-off events. For 2488/2488 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 12169 event pairs, 287 based on Foata normal form. 16/2649 useless extension candidates. Maximal degree in co-relation 7988. Up to 1438 conditions per place. [2023-11-17 15:18:40,628 INFO L140 encePairwiseOnDemand]: 167/175 looper letters, 46 selfloop transitions, 16 changer transitions 0/62 dead transitions. [2023-11-17 15:18:40,628 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 62 transitions, 406 flow [2023-11-17 15:18:40,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-17 15:18:40,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-17 15:18:40,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 403 transitions. [2023-11-17 15:18:40,630 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5757142857142857 [2023-11-17 15:18:40,630 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 403 transitions. [2023-11-17 15:18:40,630 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 403 transitions. [2023-11-17 15:18:40,630 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:18:40,630 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 403 transitions. [2023-11-17 15:18:40,631 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 100.75) internal successors, (403), 4 states have internal predecessors, (403), 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 15:18:40,633 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 175.0) internal successors, (875), 5 states have internal predecessors, (875), 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 15:18:40,634 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 175.0) internal successors, (875), 5 states have internal predecessors, (875), 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 15:18:40,634 INFO L175 Difference]: Start difference. First operand has 37 places, 30 transitions, 146 flow. Second operand 4 states and 403 transitions. [2023-11-17 15:18:40,634 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 62 transitions, 406 flow [2023-11-17 15:18:40,637 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 62 transitions, 401 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-17 15:18:40,638 INFO L231 Difference]: Finished difference. Result has 42 places, 41 transitions, 296 flow [2023-11-17 15:18:40,639 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=175, PETRI_DIFFERENCE_MINUEND_FLOW=143, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=296, PETRI_PLACES=42, PETRI_TRANSITIONS=41} [2023-11-17 15:18:40,640 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 9 predicate places. [2023-11-17 15:18:40,640 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 41 transitions, 296 flow [2023-11-17 15:18:40,640 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 90.75) internal successors, (363), 4 states have internal predecessors, (363), 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 15:18:40,640 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:18:40,640 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:18:40,641 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-17 15:18:40,641 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 15:18:40,642 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:18:40,642 INFO L85 PathProgramCache]: Analyzing trace with hash 1362037491, now seen corresponding path program 1 times [2023-11-17 15:18:40,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:18:40,642 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [769005595] [2023-11-17 15:18:40,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:18:40,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:18:40,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:18:40,728 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 15:18:40,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:18:40,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [769005595] [2023-11-17 15:18:40,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [769005595] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:18:40,729 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:18:40,729 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-17 15:18:40,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774556573] [2023-11-17 15:18:40,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:18:40,730 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-17 15:18:40,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:18:40,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-17 15:18:40,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-17 15:18:40,731 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 175 [2023-11-17 15:18:40,731 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 41 transitions, 296 flow. Second operand has 3 states, 3 states have (on average 98.0) internal successors, (294), 3 states have internal predecessors, (294), 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 15:18:40,731 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:18:40,731 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 175 [2023-11-17 15:18:40,731 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:18:40,894 INFO L124 PetriNetUnfolderBase]: 1605/2384 cut-off events. [2023-11-17 15:18:40,894 INFO L125 PetriNetUnfolderBase]: For 5117/5223 co-relation queries the response was YES. [2023-11-17 15:18:40,900 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8275 conditions, 2384 events. 1605/2384 cut-off events. For 5117/5223 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 10889 event pairs, 399 based on Foata normal form. 76/2449 useless extension candidates. Maximal degree in co-relation 8256. Up to 1923 conditions per place. [2023-11-17 15:18:40,911 INFO L140 encePairwiseOnDemand]: 171/175 looper letters, 44 selfloop transitions, 8 changer transitions 0/58 dead transitions. [2023-11-17 15:18:40,911 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 58 transitions, 512 flow [2023-11-17 15:18:40,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-17 15:18:40,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-17 15:18:40,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 312 transitions. [2023-11-17 15:18:40,913 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5942857142857143 [2023-11-17 15:18:40,913 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 312 transitions. [2023-11-17 15:18:40,913 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 312 transitions. [2023-11-17 15:18:40,913 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:18:40,913 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 312 transitions. [2023-11-17 15:18:40,914 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 104.0) internal successors, (312), 3 states have internal predecessors, (312), 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 15:18:40,915 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 175.0) internal successors, (700), 4 states have internal predecessors, (700), 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 15:18:40,915 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 175.0) internal successors, (700), 4 states have internal predecessors, (700), 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 15:18:40,915 INFO L175 Difference]: Start difference. First operand has 42 places, 41 transitions, 296 flow. Second operand 3 states and 312 transitions. [2023-11-17 15:18:40,915 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 58 transitions, 512 flow [2023-11-17 15:18:40,926 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 58 transitions, 512 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-17 15:18:40,927 INFO L231 Difference]: Finished difference. Result has 45 places, 46 transitions, 374 flow [2023-11-17 15:18:40,927 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=175, PETRI_DIFFERENCE_MINUEND_FLOW=296, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=374, PETRI_PLACES=45, PETRI_TRANSITIONS=46} [2023-11-17 15:18:40,929 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 12 predicate places. [2023-11-17 15:18:40,929 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 46 transitions, 374 flow [2023-11-17 15:18:40,930 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 98.0) internal successors, (294), 3 states have internal predecessors, (294), 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 15:18:40,930 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:18:40,930 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:18:40,930 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-17 15:18:40,930 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 15:18:40,930 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:18:40,931 INFO L85 PathProgramCache]: Analyzing trace with hash -1148831083, now seen corresponding path program 1 times [2023-11-17 15:18:40,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:18:40,931 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1888192985] [2023-11-17 15:18:40,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:18:40,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:18:40,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:18:41,030 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 15:18:41,031 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:18:41,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1888192985] [2023-11-17 15:18:41,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1888192985] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:18:41,031 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:18:41,031 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-17 15:18:41,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109596525] [2023-11-17 15:18:41,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:18:41,032 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-17 15:18:41,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:18:41,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-17 15:18:41,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-17 15:18:41,034 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 175 [2023-11-17 15:18:41,034 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 46 transitions, 374 flow. Second operand has 4 states, 4 states have (on average 91.25) internal successors, (365), 4 states have internal predecessors, (365), 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 15:18:41,034 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:18:41,035 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 175 [2023-11-17 15:18:41,037 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:18:41,254 INFO L124 PetriNetUnfolderBase]: 1673/2462 cut-off events. [2023-11-17 15:18:41,254 INFO L125 PetriNetUnfolderBase]: For 6012/6012 co-relation queries the response was YES. [2023-11-17 15:18:41,260 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9264 conditions, 2462 events. 1673/2462 cut-off events. For 6012/6012 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 11072 event pairs, 387 based on Foata normal form. 16/2478 useless extension candidates. Maximal degree in co-relation 9242. Up to 1231 conditions per place. [2023-11-17 15:18:41,271 INFO L140 encePairwiseOnDemand]: 167/175 looper letters, 57 selfloop transitions, 21 changer transitions 0/78 dead transitions. [2023-11-17 15:18:41,271 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 78 transitions, 702 flow [2023-11-17 15:18:41,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-17 15:18:41,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-17 15:18:41,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 403 transitions. [2023-11-17 15:18:41,272 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5757142857142857 [2023-11-17 15:18:41,272 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 403 transitions. [2023-11-17 15:18:41,272 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 403 transitions. [2023-11-17 15:18:41,273 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:18:41,273 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 403 transitions. [2023-11-17 15:18:41,274 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 100.75) internal successors, (403), 4 states have internal predecessors, (403), 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 15:18:41,275 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 175.0) internal successors, (875), 5 states have internal predecessors, (875), 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 15:18:41,275 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 175.0) internal successors, (875), 5 states have internal predecessors, (875), 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 15:18:41,275 INFO L175 Difference]: Start difference. First operand has 45 places, 46 transitions, 374 flow. Second operand 4 states and 403 transitions. [2023-11-17 15:18:41,275 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 78 transitions, 702 flow [2023-11-17 15:18:41,284 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 78 transitions, 691 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-17 15:18:41,285 INFO L231 Difference]: Finished difference. Result has 50 places, 53 transitions, 554 flow [2023-11-17 15:18:41,286 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=175, PETRI_DIFFERENCE_MINUEND_FLOW=366, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=554, PETRI_PLACES=50, PETRI_TRANSITIONS=53} [2023-11-17 15:18:41,286 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 17 predicate places. [2023-11-17 15:18:41,286 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 53 transitions, 554 flow [2023-11-17 15:18:41,286 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 91.25) internal successors, (365), 4 states have internal predecessors, (365), 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 15:18:41,287 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:18:41,287 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:18:41,287 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-17 15:18:41,287 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 15:18:41,287 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:18:41,287 INFO L85 PathProgramCache]: Analyzing trace with hash -1025885700, now seen corresponding path program 1 times [2023-11-17 15:18:41,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:18:41,287 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1372198416] [2023-11-17 15:18:41,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:18:41,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:18:41,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:18:41,368 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 15:18:41,368 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:18:41,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1372198416] [2023-11-17 15:18:41,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1372198416] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:18:41,368 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:18:41,368 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-17 15:18:41,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975034219] [2023-11-17 15:18:41,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:18:41,369 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-17 15:18:41,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:18:41,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-17 15:18:41,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-17 15:18:41,370 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 175 [2023-11-17 15:18:41,370 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 53 transitions, 554 flow. Second operand has 4 states, 4 states have (on average 91.5) internal successors, (366), 4 states have internal predecessors, (366), 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 15:18:41,370 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:18:41,371 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 175 [2023-11-17 15:18:41,371 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:18:41,591 INFO L124 PetriNetUnfolderBase]: 1913/2858 cut-off events. [2023-11-17 15:18:41,591 INFO L125 PetriNetUnfolderBase]: For 11404/11404 co-relation queries the response was YES. [2023-11-17 15:18:41,596 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11452 conditions, 2858 events. 1913/2858 cut-off events. For 11404/11404 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 13623 event pairs, 430 based on Foata normal form. 36/2894 useless extension candidates. Maximal degree in co-relation 11426. Up to 1248 conditions per place. [2023-11-17 15:18:41,605 INFO L140 encePairwiseOnDemand]: 167/175 looper letters, 50 selfloop transitions, 29 changer transitions 1/80 dead transitions. [2023-11-17 15:18:41,605 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 80 transitions, 837 flow [2023-11-17 15:18:41,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-17 15:18:41,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-17 15:18:41,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 404 transitions. [2023-11-17 15:18:41,607 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5771428571428572 [2023-11-17 15:18:41,607 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 404 transitions. [2023-11-17 15:18:41,607 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 404 transitions. [2023-11-17 15:18:41,607 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:18:41,607 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 404 transitions. [2023-11-17 15:18:41,608 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 101.0) internal successors, (404), 4 states have internal predecessors, (404), 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 15:18:41,609 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 175.0) internal successors, (875), 5 states have internal predecessors, (875), 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 15:18:41,610 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 175.0) internal successors, (875), 5 states have internal predecessors, (875), 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 15:18:41,610 INFO L175 Difference]: Start difference. First operand has 50 places, 53 transitions, 554 flow. Second operand 4 states and 404 transitions. [2023-11-17 15:18:41,610 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 80 transitions, 837 flow [2023-11-17 15:18:41,618 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 80 transitions, 832 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-17 15:18:41,619 INFO L231 Difference]: Finished difference. Result has 55 places, 55 transitions, 713 flow [2023-11-17 15:18:41,620 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=175, PETRI_DIFFERENCE_MINUEND_FLOW=549, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=713, PETRI_PLACES=55, PETRI_TRANSITIONS=55} [2023-11-17 15:18:41,620 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 22 predicate places. [2023-11-17 15:18:41,620 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 55 transitions, 713 flow [2023-11-17 15:18:41,621 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 91.5) internal successors, (366), 4 states have internal predecessors, (366), 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 15:18:41,621 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:18:41,621 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:18:41,621 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-17 15:18:41,621 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 15:18:41,621 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:18:41,621 INFO L85 PathProgramCache]: Analyzing trace with hash -1024797414, now seen corresponding path program 1 times [2023-11-17 15:18:41,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:18:41,622 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1441665226] [2023-11-17 15:18:41,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:18:41,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:18:41,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:18:41,703 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 15:18:41,703 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:18:41,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1441665226] [2023-11-17 15:18:41,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1441665226] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:18:41,704 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:18:41,704 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-17 15:18:41,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44975380] [2023-11-17 15:18:41,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:18:41,704 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-17 15:18:41,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:18:41,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-17 15:18:41,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-17 15:18:41,705 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 175 [2023-11-17 15:18:41,706 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 55 transitions, 713 flow. Second operand has 5 states, 5 states have (on average 90.8) internal successors, (454), 5 states have internal predecessors, (454), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:18:41,706 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:18:41,706 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 175 [2023-11-17 15:18:41,706 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:18:42,013 INFO L124 PetriNetUnfolderBase]: 2505/3778 cut-off events. [2023-11-17 15:18:42,014 INFO L125 PetriNetUnfolderBase]: For 20808/20808 co-relation queries the response was YES. [2023-11-17 15:18:42,022 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15876 conditions, 3778 events. 2505/3778 cut-off events. For 20808/20808 co-relation queries the response was YES. Maximal size of possible extension queue 205. Compared 19036 event pairs, 455 based on Foata normal form. 48/3826 useless extension candidates. Maximal degree in co-relation 15846. Up to 1796 conditions per place. [2023-11-17 15:18:42,029 INFO L140 encePairwiseOnDemand]: 167/175 looper letters, 49 selfloop transitions, 19 changer transitions 34/102 dead transitions. [2023-11-17 15:18:42,029 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 102 transitions, 1376 flow [2023-11-17 15:18:42,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-17 15:18:42,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-17 15:18:42,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 496 transitions. [2023-11-17 15:18:42,030 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5668571428571428 [2023-11-17 15:18:42,030 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 496 transitions. [2023-11-17 15:18:42,031 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 496 transitions. [2023-11-17 15:18:42,031 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:18:42,031 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 496 transitions. [2023-11-17 15:18:42,032 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 99.2) internal successors, (496), 5 states have internal predecessors, (496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:18:42,033 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 175.0) internal successors, (1050), 6 states have internal predecessors, (1050), 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 15:18:42,033 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 175.0) internal successors, (1050), 6 states have internal predecessors, (1050), 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 15:18:42,033 INFO L175 Difference]: Start difference. First operand has 55 places, 55 transitions, 713 flow. Second operand 5 states and 496 transitions. [2023-11-17 15:18:42,033 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 102 transitions, 1376 flow [2023-11-17 15:18:42,051 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 102 transitions, 1362 flow, removed 7 selfloop flow, removed 0 redundant places. [2023-11-17 15:18:42,053 INFO L231 Difference]: Finished difference. Result has 60 places, 46 transitions, 599 flow [2023-11-17 15:18:42,053 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=175, PETRI_DIFFERENCE_MINUEND_FLOW=707, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=599, PETRI_PLACES=60, PETRI_TRANSITIONS=46} [2023-11-17 15:18:42,054 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 27 predicate places. [2023-11-17 15:18:42,054 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 46 transitions, 599 flow [2023-11-17 15:18:42,054 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 90.8) internal successors, (454), 5 states have internal predecessors, (454), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:18:42,054 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:18:42,054 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:18:42,055 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-17 15:18:42,055 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 15:18:42,055 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:18:42,055 INFO L85 PathProgramCache]: Analyzing trace with hash -1254035706, now seen corresponding path program 1 times [2023-11-17 15:18:42,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:18:42,055 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [500053216] [2023-11-17 15:18:42,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:18:42,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:18:42,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:18:42,125 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 15:18:42,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:18:42,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [500053216] [2023-11-17 15:18:42,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [500053216] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:18:42,126 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:18:42,126 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-17 15:18:42,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34742513] [2023-11-17 15:18:42,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:18:42,126 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-17 15:18:42,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:18:42,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-17 15:18:42,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-17 15:18:42,127 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 175 [2023-11-17 15:18:42,128 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 46 transitions, 599 flow. Second operand has 4 states, 4 states have (on average 91.5) internal successors, (366), 4 states have internal predecessors, (366), 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 15:18:42,128 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:18:42,128 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 175 [2023-11-17 15:18:42,128 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:18:42,311 INFO L124 PetriNetUnfolderBase]: 1459/2232 cut-off events. [2023-11-17 15:18:42,311 INFO L125 PetriNetUnfolderBase]: For 12783/12783 co-relation queries the response was YES. [2023-11-17 15:18:42,318 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9441 conditions, 2232 events. 1459/2232 cut-off events. For 12783/12783 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 10676 event pairs, 352 based on Foata normal form. 36/2268 useless extension candidates. Maximal degree in co-relation 9408. Up to 1124 conditions per place. [2023-11-17 15:18:42,323 INFO L140 encePairwiseOnDemand]: 168/175 looper letters, 42 selfloop transitions, 18 changer transitions 7/67 dead transitions. [2023-11-17 15:18:42,323 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 67 transitions, 855 flow [2023-11-17 15:18:42,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-17 15:18:42,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-17 15:18:42,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 397 transitions. [2023-11-17 15:18:42,324 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5671428571428572 [2023-11-17 15:18:42,324 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 397 transitions. [2023-11-17 15:18:42,324 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 397 transitions. [2023-11-17 15:18:42,325 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:18:42,325 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 397 transitions. [2023-11-17 15:18:42,325 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 99.25) internal successors, (397), 4 states have internal predecessors, (397), 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 15:18:42,326 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 175.0) internal successors, (875), 5 states have internal predecessors, (875), 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 15:18:42,326 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 175.0) internal successors, (875), 5 states have internal predecessors, (875), 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 15:18:42,326 INFO L175 Difference]: Start difference. First operand has 60 places, 46 transitions, 599 flow. Second operand 4 states and 397 transitions. [2023-11-17 15:18:42,326 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 67 transitions, 855 flow [2023-11-17 15:18:42,339 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 67 transitions, 798 flow, removed 3 selfloop flow, removed 5 redundant places. [2023-11-17 15:18:42,340 INFO L231 Difference]: Finished difference. Result has 61 places, 42 transitions, 561 flow [2023-11-17 15:18:42,340 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=175, PETRI_DIFFERENCE_MINUEND_FLOW=551, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=561, PETRI_PLACES=61, PETRI_TRANSITIONS=42} [2023-11-17 15:18:42,341 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 28 predicate places. [2023-11-17 15:18:42,341 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 42 transitions, 561 flow [2023-11-17 15:18:42,341 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 91.5) internal successors, (366), 4 states have internal predecessors, (366), 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 15:18:42,341 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:18:42,341 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:18:42,341 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-17 15:18:42,341 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 15:18:42,342 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:18:42,342 INFO L85 PathProgramCache]: Analyzing trace with hash -1047037434, now seen corresponding path program 2 times [2023-11-17 15:18:42,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:18:42,342 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1310482953] [2023-11-17 15:18:42,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:18:42,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:18:42,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:18:42,416 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 15:18:42,416 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:18:42,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1310482953] [2023-11-17 15:18:42,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1310482953] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:18:42,416 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:18:42,417 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-17 15:18:42,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727903913] [2023-11-17 15:18:42,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:18:42,417 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-17 15:18:42,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:18:42,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-17 15:18:42,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-17 15:18:42,418 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 175 [2023-11-17 15:18:42,419 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 42 transitions, 561 flow. Second operand has 4 states, 4 states have (on average 93.5) internal successors, (374), 4 states have internal predecessors, (374), 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 15:18:42,419 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:18:42,419 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 175 [2023-11-17 15:18:42,419 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:18:42,598 INFO L124 PetriNetUnfolderBase]: 1225/1980 cut-off events. [2023-11-17 15:18:42,598 INFO L125 PetriNetUnfolderBase]: For 15790/15837 co-relation queries the response was YES. [2023-11-17 15:18:42,603 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7950 conditions, 1980 events. 1225/1980 cut-off events. For 15790/15837 co-relation queries the response was YES. Maximal size of possible extension queue 161. Compared 10592 event pairs, 303 based on Foata normal form. 75/2047 useless extension candidates. Maximal degree in co-relation 7916. Up to 1314 conditions per place. [2023-11-17 15:18:42,607 INFO L140 encePairwiseOnDemand]: 168/175 looper letters, 57 selfloop transitions, 5 changer transitions 53/120 dead transitions. [2023-11-17 15:18:42,607 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 120 transitions, 1849 flow [2023-11-17 15:18:42,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-17 15:18:42,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-17 15:18:42,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 503 transitions. [2023-11-17 15:18:42,608 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5748571428571428 [2023-11-17 15:18:42,609 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 503 transitions. [2023-11-17 15:18:42,609 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 503 transitions. [2023-11-17 15:18:42,609 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:18:42,609 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 503 transitions. [2023-11-17 15:18:42,610 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 100.6) internal successors, (503), 5 states have internal predecessors, (503), 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 15:18:42,611 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 175.0) internal successors, (1050), 6 states have internal predecessors, (1050), 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 15:18:42,611 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 175.0) internal successors, (1050), 6 states have internal predecessors, (1050), 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 15:18:42,611 INFO L175 Difference]: Start difference. First operand has 61 places, 42 transitions, 561 flow. Second operand 5 states and 503 transitions. [2023-11-17 15:18:42,611 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 120 transitions, 1849 flow [2023-11-17 15:18:42,618 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 120 transitions, 1719 flow, removed 16 selfloop flow, removed 2 redundant places. [2023-11-17 15:18:42,619 INFO L231 Difference]: Finished difference. Result has 66 places, 46 transitions, 564 flow [2023-11-17 15:18:42,619 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=175, PETRI_DIFFERENCE_MINUEND_FLOW=519, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=564, PETRI_PLACES=66, PETRI_TRANSITIONS=46} [2023-11-17 15:18:42,620 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 33 predicate places. [2023-11-17 15:18:42,620 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 46 transitions, 564 flow [2023-11-17 15:18:42,620 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 93.5) internal successors, (374), 4 states have internal predecessors, (374), 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 15:18:42,620 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:18:42,620 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:18:42,620 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-17 15:18:42,621 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 15:18:42,621 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:18:42,621 INFO L85 PathProgramCache]: Analyzing trace with hash -252936055, now seen corresponding path program 1 times [2023-11-17 15:18:42,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:18:42,621 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [810177241] [2023-11-17 15:18:42,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:18:42,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:18:42,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:18:42,680 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 15:18:42,680 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:18:42,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [810177241] [2023-11-17 15:18:42,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [810177241] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:18:42,680 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:18:42,681 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-17 15:18:42,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1304431710] [2023-11-17 15:18:42,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:18:42,681 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-17 15:18:42,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:18:42,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-17 15:18:42,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-17 15:18:42,682 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 175 [2023-11-17 15:18:42,682 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 46 transitions, 564 flow. Second operand has 5 states, 5 states have (on average 93.0) internal successors, (465), 5 states have internal predecessors, (465), 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 15:18:42,682 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:18:42,682 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 175 [2023-11-17 15:18:42,682 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:18:42,824 INFO L124 PetriNetUnfolderBase]: 890/1499 cut-off events. [2023-11-17 15:18:42,824 INFO L125 PetriNetUnfolderBase]: For 10509/10584 co-relation queries the response was YES. [2023-11-17 15:18:42,829 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7620 conditions, 1499 events. 890/1499 cut-off events. For 10509/10584 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 7891 event pairs, 84 based on Foata normal form. 75/1566 useless extension candidates. Maximal degree in co-relation 7583. Up to 961 conditions per place. [2023-11-17 15:18:42,832 INFO L140 encePairwiseOnDemand]: 168/175 looper letters, 71 selfloop transitions, 9 changer transitions 46/131 dead transitions. [2023-11-17 15:18:42,832 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 131 transitions, 1898 flow [2023-11-17 15:18:42,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-17 15:18:42,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-17 15:18:42,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 604 transitions. [2023-11-17 15:18:42,834 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5752380952380952 [2023-11-17 15:18:42,834 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 604 transitions. [2023-11-17 15:18:42,834 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 604 transitions. [2023-11-17 15:18:42,834 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:18:42,834 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 604 transitions. [2023-11-17 15:18:42,835 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 100.66666666666667) internal successors, (604), 6 states have internal predecessors, (604), 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 15:18:42,836 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 175.0) internal successors, (1225), 7 states have internal predecessors, (1225), 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 15:18:42,837 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 175.0) internal successors, (1225), 7 states have internal predecessors, (1225), 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 15:18:42,837 INFO L175 Difference]: Start difference. First operand has 66 places, 46 transitions, 564 flow. Second operand 6 states and 604 transitions. [2023-11-17 15:18:42,837 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 131 transitions, 1898 flow [2023-11-17 15:18:42,844 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 131 transitions, 1830 flow, removed 1 selfloop flow, removed 3 redundant places. [2023-11-17 15:18:42,845 INFO L231 Difference]: Finished difference. Result has 69 places, 50 transitions, 608 flow [2023-11-17 15:18:42,846 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=175, PETRI_DIFFERENCE_MINUEND_FLOW=536, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=608, PETRI_PLACES=69, PETRI_TRANSITIONS=50} [2023-11-17 15:18:42,847 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 36 predicate places. [2023-11-17 15:18:42,847 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 50 transitions, 608 flow [2023-11-17 15:18:42,847 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 93.0) internal successors, (465), 5 states have internal predecessors, (465), 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 15:18:42,847 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:18:42,847 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:18:42,848 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-17 15:18:42,848 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 15:18:42,848 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:18:42,848 INFO L85 PathProgramCache]: Analyzing trace with hash 1675538934, now seen corresponding path program 1 times [2023-11-17 15:18:42,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:18:42,848 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [12861461] [2023-11-17 15:18:42,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:18:42,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:18:42,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:18:42,948 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 15:18:42,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:18:42,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [12861461] [2023-11-17 15:18:42,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [12861461] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:18:42,949 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:18:42,949 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-17 15:18:42,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315151067] [2023-11-17 15:18:42,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:18:42,950 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-17 15:18:42,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:18:42,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-17 15:18:42,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-17 15:18:42,950 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 175 [2023-11-17 15:18:42,951 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 50 transitions, 608 flow. Second operand has 6 states, 6 states have (on average 92.66666666666667) internal successors, (556), 6 states have internal predecessors, (556), 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 15:18:42,951 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:18:42,951 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 175 [2023-11-17 15:18:42,951 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:18:43,094 INFO L124 PetriNetUnfolderBase]: 577/1012 cut-off events. [2023-11-17 15:18:43,094 INFO L125 PetriNetUnfolderBase]: For 7005/7120 co-relation queries the response was YES. [2023-11-17 15:18:43,096 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6063 conditions, 1012 events. 577/1012 cut-off events. For 7005/7120 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 5021 event pairs, 28 based on Foata normal form. 63/1067 useless extension candidates. Maximal degree in co-relation 6024. Up to 623 conditions per place. [2023-11-17 15:18:43,099 INFO L140 encePairwiseOnDemand]: 168/175 looper letters, 76 selfloop transitions, 13 changer transitions 41/134 dead transitions. [2023-11-17 15:18:43,099 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 134 transitions, 1887 flow [2023-11-17 15:18:43,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-17 15:18:43,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-17 15:18:43,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 705 transitions. [2023-11-17 15:18:43,103 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5755102040816327 [2023-11-17 15:18:43,103 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 705 transitions. [2023-11-17 15:18:43,103 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 705 transitions. [2023-11-17 15:18:43,104 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:18:43,104 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 705 transitions. [2023-11-17 15:18:43,105 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 100.71428571428571) internal successors, (705), 7 states have internal predecessors, (705), 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 15:18:43,106 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 175.0) internal successors, (1400), 8 states have internal predecessors, (1400), 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 15:18:43,107 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 175.0) internal successors, (1400), 8 states have internal predecessors, (1400), 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 15:18:43,107 INFO L175 Difference]: Start difference. First operand has 69 places, 50 transitions, 608 flow. Second operand 7 states and 705 transitions. [2023-11-17 15:18:43,107 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 134 transitions, 1887 flow [2023-11-17 15:18:43,121 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 134 transitions, 1825 flow, removed 26 selfloop flow, removed 4 redundant places. [2023-11-17 15:18:43,122 INFO L231 Difference]: Finished difference. Result has 72 places, 52 transitions, 642 flow [2023-11-17 15:18:43,122 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=175, PETRI_DIFFERENCE_MINUEND_FLOW=570, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=642, PETRI_PLACES=72, PETRI_TRANSITIONS=52} [2023-11-17 15:18:43,122 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 39 predicate places. [2023-11-17 15:18:43,122 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 52 transitions, 642 flow [2023-11-17 15:18:43,123 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 92.66666666666667) internal successors, (556), 6 states have internal predecessors, (556), 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 15:18:43,123 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:18:43,123 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 15:18:43,123 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-17 15:18:43,123 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 15:18:43,123 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:18:43,124 INFO L85 PathProgramCache]: Analyzing trace with hash 1031968795, now seen corresponding path program 1 times [2023-11-17 15:18:43,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:18:43,124 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1482734811] [2023-11-17 15:18:43,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:18:43,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:18:43,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:18:43,206 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 15:18:43,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:18:43,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1482734811] [2023-11-17 15:18:43,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1482734811] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:18:43,207 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:18:43,207 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-17 15:18:43,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [598112782] [2023-11-17 15:18:43,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:18:43,207 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-17 15:18:43,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:18:43,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-17 15:18:43,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-17 15:18:43,208 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 175 [2023-11-17 15:18:43,209 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 52 transitions, 642 flow. Second operand has 5 states, 5 states have (on average 91.6) internal successors, (458), 5 states have internal predecessors, (458), 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 15:18:43,209 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:18:43,209 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 175 [2023-11-17 15:18:43,209 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:18:43,328 INFO L124 PetriNetUnfolderBase]: 482/848 cut-off events. [2023-11-17 15:18:43,328 INFO L125 PetriNetUnfolderBase]: For 6868/6868 co-relation queries the response was YES. [2023-11-17 15:18:43,330 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5165 conditions, 848 events. 482/848 cut-off events. For 6868/6868 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 3801 event pairs, 56 based on Foata normal form. 6/854 useless extension candidates. Maximal degree in co-relation 5125. Up to 364 conditions per place. [2023-11-17 15:18:43,332 INFO L140 encePairwiseOnDemand]: 167/175 looper letters, 53 selfloop transitions, 16 changer transitions 60/129 dead transitions. [2023-11-17 15:18:43,332 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 129 transitions, 1590 flow [2023-11-17 15:18:43,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-17 15:18:43,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-17 15:18:43,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 587 transitions. [2023-11-17 15:18:43,334 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.559047619047619 [2023-11-17 15:18:43,334 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 587 transitions. [2023-11-17 15:18:43,334 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 587 transitions. [2023-11-17 15:18:43,334 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:18:43,334 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 587 transitions. [2023-11-17 15:18:43,335 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 97.83333333333333) internal successors, (587), 6 states have internal predecessors, (587), 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 15:18:43,336 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 175.0) internal successors, (1225), 7 states have internal predecessors, (1225), 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 15:18:43,336 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 175.0) internal successors, (1225), 7 states have internal predecessors, (1225), 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 15:18:43,337 INFO L175 Difference]: Start difference. First operand has 72 places, 52 transitions, 642 flow. Second operand 6 states and 587 transitions. [2023-11-17 15:18:43,337 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 129 transitions, 1590 flow [2023-11-17 15:18:43,348 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 129 transitions, 1350 flow, removed 76 selfloop flow, removed 6 redundant places. [2023-11-17 15:18:43,349 INFO L231 Difference]: Finished difference. Result has 71 places, 47 transitions, 534 flow [2023-11-17 15:18:43,350 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=175, PETRI_DIFFERENCE_MINUEND_FLOW=579, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=534, PETRI_PLACES=71, PETRI_TRANSITIONS=47} [2023-11-17 15:18:43,350 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 38 predicate places. [2023-11-17 15:18:43,350 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 47 transitions, 534 flow [2023-11-17 15:18:43,350 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 91.6) internal successors, (458), 5 states have internal predecessors, (458), 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 15:18:43,350 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:18:43,350 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 15:18:43,351 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-17 15:18:43,351 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 15:18:43,351 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:18:43,351 INFO L85 PathProgramCache]: Analyzing trace with hash -868765925, now seen corresponding path program 2 times [2023-11-17 15:18:43,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:18:43,351 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [473002877] [2023-11-17 15:18:43,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:18:43,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:18:43,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:18:43,440 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 15:18:43,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:18:43,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [473002877] [2023-11-17 15:18:43,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [473002877] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:18:43,441 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:18:43,441 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-17 15:18:43,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700425682] [2023-11-17 15:18:43,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:18:43,441 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-17 15:18:43,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:18:43,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-17 15:18:43,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-17 15:18:43,442 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 175 [2023-11-17 15:18:43,442 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 47 transitions, 534 flow. Second operand has 7 states, 7 states have (on average 92.57142857142857) internal successors, (648), 7 states have internal predecessors, (648), 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 15:18:43,443 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:18:43,443 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 175 [2023-11-17 15:18:43,443 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:18:43,537 INFO L124 PetriNetUnfolderBase]: 247/462 cut-off events. [2023-11-17 15:18:43,537 INFO L125 PetriNetUnfolderBase]: For 3708/3766 co-relation queries the response was YES. [2023-11-17 15:18:43,539 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2502 conditions, 462 events. 247/462 cut-off events. For 3708/3766 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1904 event pairs, 16 based on Foata normal form. 29/486 useless extension candidates. Maximal degree in co-relation 2467. Up to 145 conditions per place. [2023-11-17 15:18:43,539 INFO L140 encePairwiseOnDemand]: 168/175 looper letters, 22 selfloop transitions, 17 changer transitions 50/90 dead transitions. [2023-11-17 15:18:43,540 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 90 transitions, 1273 flow [2023-11-17 15:18:43,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-17 15:18:43,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-17 15:18:43,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 782 transitions. [2023-11-17 15:18:43,541 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5585714285714286 [2023-11-17 15:18:43,541 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 782 transitions. [2023-11-17 15:18:43,541 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 782 transitions. [2023-11-17 15:18:43,542 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:18:43,542 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 782 transitions. [2023-11-17 15:18:43,543 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 97.75) internal successors, (782), 8 states have internal predecessors, (782), 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 15:18:43,545 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 175.0) internal successors, (1575), 9 states have internal predecessors, (1575), 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 15:18:43,545 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 175.0) internal successors, (1575), 9 states have internal predecessors, (1575), 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 15:18:43,545 INFO L175 Difference]: Start difference. First operand has 71 places, 47 transitions, 534 flow. Second operand 8 states and 782 transitions. [2023-11-17 15:18:43,545 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 90 transitions, 1273 flow [2023-11-17 15:18:43,551 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 90 transitions, 1116 flow, removed 9 selfloop flow, removed 7 redundant places. [2023-11-17 15:18:43,552 INFO L231 Difference]: Finished difference. Result has 72 places, 32 transitions, 300 flow [2023-11-17 15:18:43,552 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=175, PETRI_DIFFERENCE_MINUEND_FLOW=456, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=300, PETRI_PLACES=72, PETRI_TRANSITIONS=32} [2023-11-17 15:18:43,553 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 39 predicate places. [2023-11-17 15:18:43,553 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 32 transitions, 300 flow [2023-11-17 15:18:43,553 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 92.57142857142857) internal successors, (648), 7 states have internal predecessors, (648), 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 15:18:43,553 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:18:43,553 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 15:18:43,553 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-17 15:18:43,553 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 15:18:43,554 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:18:43,554 INFO L85 PathProgramCache]: Analyzing trace with hash 61548849, now seen corresponding path program 1 times [2023-11-17 15:18:43,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:18:43,554 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1303034347] [2023-11-17 15:18:43,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:18:43,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:18:43,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:18:43,627 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 15:18:43,627 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:18:43,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1303034347] [2023-11-17 15:18:43,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1303034347] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:18:43,627 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:18:43,627 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-17 15:18:43,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836935287] [2023-11-17 15:18:43,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:18:43,628 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-17 15:18:43,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:18:43,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-17 15:18:43,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-17 15:18:43,629 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 175 [2023-11-17 15:18:43,629 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 32 transitions, 300 flow. Second operand has 4 states, 4 states have (on average 98.0) internal successors, (392), 4 states have internal predecessors, (392), 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 15:18:43,629 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:18:43,629 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 175 [2023-11-17 15:18:43,629 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:18:43,655 INFO L124 PetriNetUnfolderBase]: 44/94 cut-off events. [2023-11-17 15:18:43,655 INFO L125 PetriNetUnfolderBase]: For 670/670 co-relation queries the response was YES. [2023-11-17 15:18:43,656 INFO L83 FinitePrefix]: Finished finitePrefix Result has 573 conditions, 94 events. 44/94 cut-off events. For 670/670 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 186 event pairs, 14 based on Foata normal form. 1/95 useless extension candidates. Maximal degree in co-relation 548. Up to 57 conditions per place. [2023-11-17 15:18:43,656 INFO L140 encePairwiseOnDemand]: 172/175 looper letters, 0 selfloop transitions, 0 changer transitions 35/35 dead transitions. [2023-11-17 15:18:43,656 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 35 transitions, 382 flow [2023-11-17 15:18:43,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-17 15:18:43,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-17 15:18:43,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 394 transitions. [2023-11-17 15:18:43,657 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5628571428571428 [2023-11-17 15:18:43,657 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 394 transitions. [2023-11-17 15:18:43,657 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 394 transitions. [2023-11-17 15:18:43,658 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:18:43,658 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 394 transitions. [2023-11-17 15:18:43,658 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 98.5) internal successors, (394), 4 states have internal predecessors, (394), 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 15:18:43,659 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 175.0) internal successors, (875), 5 states have internal predecessors, (875), 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 15:18:43,659 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 175.0) internal successors, (875), 5 states have internal predecessors, (875), 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 15:18:43,659 INFO L175 Difference]: Start difference. First operand has 72 places, 32 transitions, 300 flow. Second operand 4 states and 394 transitions. [2023-11-17 15:18:43,660 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 35 transitions, 382 flow [2023-11-17 15:18:43,661 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 35 transitions, 240 flow, removed 17 selfloop flow, removed 28 redundant places. [2023-11-17 15:18:43,661 INFO L231 Difference]: Finished difference. Result has 44 places, 0 transitions, 0 flow [2023-11-17 15:18:43,661 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=175, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=41, 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=44, PETRI_TRANSITIONS=0} [2023-11-17 15:18:43,661 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 11 predicate places. [2023-11-17 15:18:43,661 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 0 transitions, 0 flow [2023-11-17 15:18:43,662 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 98.0) internal successors, (392), 4 states have internal predecessors, (392), 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 15:18:43,664 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (4 of 5 remaining) [2023-11-17 15:18:43,664 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 5 remaining) [2023-11-17 15:18:43,664 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 5 remaining) [2023-11-17 15:18:43,664 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 5 remaining) [2023-11-17 15:18:43,664 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 5 remaining) [2023-11-17 15:18:43,665 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-17 15:18:43,665 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:18:43,667 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-17 15:18:43,667 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-17 15:18:43,669 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.11 03:18:43 BasicIcfg [2023-11-17 15:18:43,669 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-17 15:18:43,669 INFO L158 Benchmark]: Toolchain (without parser) took 7700.27ms. Allocated memory was 313.5MB in the beginning and 451.9MB in the end (delta: 138.4MB). Free memory was 261.4MB in the beginning and 153.4MB in the end (delta: 108.0MB). Peak memory consumption was 248.0MB. Max. memory is 8.0GB. [2023-11-17 15:18:43,669 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 180.4MB. Free memory is still 129.3MB. There was no memory consumed. Max. memory is 8.0GB. [2023-11-17 15:18:43,670 INFO L158 Benchmark]: CACSL2BoogieTranslator took 415.13ms. Allocated memory is still 313.5MB. Free memory was 261.4MB in the beginning and 240.9MB in the end (delta: 20.6MB). Peak memory consumption was 21.0MB. Max. memory is 8.0GB. [2023-11-17 15:18:43,670 INFO L158 Benchmark]: Boogie Procedure Inliner took 49.10ms. Allocated memory is still 313.5MB. Free memory was 240.9MB in the beginning and 238.9MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-11-17 15:18:43,670 INFO L158 Benchmark]: Boogie Preprocessor took 39.83ms. Allocated memory is still 313.5MB. Free memory was 238.9MB in the beginning and 237.3MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-11-17 15:18:43,670 INFO L158 Benchmark]: RCFGBuilder took 321.83ms. Allocated memory is still 313.5MB. Free memory was 237.3MB in the beginning and 222.8MB in the end (delta: 14.5MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. [2023-11-17 15:18:43,670 INFO L158 Benchmark]: TraceAbstraction took 6870.11ms. Allocated memory was 313.5MB in the beginning and 451.9MB in the end (delta: 138.4MB). Free memory was 222.1MB in the beginning and 153.4MB in the end (delta: 68.7MB). Peak memory consumption was 208.2MB. Max. memory is 8.0GB. [2023-11-17 15:18:43,671 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 180.4MB. Free memory is still 129.3MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 415.13ms. Allocated memory is still 313.5MB. Free memory was 261.4MB in the beginning and 240.9MB in the end (delta: 20.6MB). Peak memory consumption was 21.0MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 49.10ms. Allocated memory is still 313.5MB. Free memory was 240.9MB in the beginning and 238.9MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 39.83ms. Allocated memory is still 313.5MB. Free memory was 238.9MB in the beginning and 237.3MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 321.83ms. Allocated memory is still 313.5MB. Free memory was 237.3MB in the beginning and 222.8MB in the end (delta: 14.5MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. * TraceAbstraction took 6870.11ms. Allocated memory was 313.5MB in the beginning and 451.9MB in the end (delta: 138.4MB). Free memory was 222.1MB in the beginning and 153.4MB in the end (delta: 68.7MB). Peak memory consumption was 208.2MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.1s, 97 PlacesBefore, 33 PlacesAfterwards, 85 TransitionsBefore, 20 TransitionsAfterwards, 2002 CoEnabledTransitionPairs, 5 FixpointIterations, 18 TrivialSequentialCompositions, 46 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 4 ConcurrentYvCompositions, 1 ChoiceCompositions, 69 TotalNumberOfCompositions, 2798 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1809, independent: 1736, independent conditional: 0, independent unconditional: 1736, dependent: 73, dependent conditional: 0, dependent unconditional: 73, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 1333, independent: 1298, independent conditional: 0, independent unconditional: 1298, dependent: 35, dependent conditional: 0, dependent unconditional: 35, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 1333, independent: 1280, independent conditional: 0, independent unconditional: 1280, dependent: 53, dependent conditional: 0, dependent unconditional: 53, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 53, independent: 18, independent conditional: 0, independent unconditional: 18, dependent: 35, dependent conditional: 0, dependent unconditional: 35, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 150, independent: 69, independent conditional: 0, independent unconditional: 69, dependent: 81, dependent conditional: 0, dependent unconditional: 81, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 1809, independent: 438, independent conditional: 0, independent unconditional: 438, dependent: 38, dependent conditional: 0, dependent unconditional: 38, unknown: 1333, unknown conditional: 0, unknown unconditional: 1333] , Statistics on independence cache: Total cache size (in pairs): 74, Positive cache size: 62, Positive conditional cache size: 0, Positive unconditional cache size: 62, 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, 139 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: 6.7s, OverallIterations: 14, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 2.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.3s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 318 SdHoareTripleChecker+Valid, 0.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 318 mSDsluCounter, 23 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 11 mSDsCounter, 40 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 963 IncrementalHoareTripleChecker+Invalid, 1003 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 40 mSolverCounterUnsat, 12 mSDtfsCounter, 963 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 45 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=713occurred in iteration=6, InterpolantAutomatonStates: 67, 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, 200 NumberOfCodeBlocks, 200 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 186 ConstructedInterpolants, 0 QuantifiedInterpolants, 776 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 15:18:43,689 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...