/usr/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-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/thin002_pso.oepc_pso.opt_tso.oepc_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-wip.dk.fix-rcfgbuilder-lbe-0ccecc1-m [2023-11-10 11:48:32,283 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-10 11:48:32,374 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf [2023-11-10 11:48:32,398 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-10 11:48:32,399 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-10 11:48:32,400 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-10 11:48:32,400 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-10 11:48:32,400 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-10 11:48:32,401 INFO L153 SettingsManager]: * Use SBE=true [2023-11-10 11:48:32,401 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-10 11:48:32,401 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-10 11:48:32,402 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-10 11:48:32,402 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-10 11:48:32,402 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-10 11:48:32,403 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-10 11:48:32,417 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-10 11:48:32,417 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-10 11:48:32,417 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-10 11:48:32,418 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-10 11:48:32,418 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-10 11:48:32,418 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-10 11:48:32,419 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-10 11:48:32,419 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-10 11:48:32,419 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-11-10 11:48:32,419 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-10 11:48:32,419 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-10 11:48:32,420 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-10 11:48:32,420 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-10 11:48:32,420 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-10 11:48:32,420 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-10 11:48:32,420 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-10 11:48:32,421 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-10 11:48:32,421 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-10 11:48:32,421 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-11-10 11:48:32,611 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-10 11:48:32,634 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-10 11:48:32,636 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-10 11:48:32,637 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-10 11:48:32,637 INFO L274 PluginConnector]: CDTParser initialized [2023-11-10 11:48:32,638 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/thin002_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2023-11-10 11:48:33,723 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-10 11:48:33,941 INFO L384 CDTParser]: Found 1 translation units. [2023-11-10 11:48:33,942 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/thin002_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2023-11-10 11:48:33,957 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a793a3c12/cf18753e68044c41aead8e6192d49687/FLAGbcba0ea71 [2023-11-10 11:48:33,968 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a793a3c12/cf18753e68044c41aead8e6192d49687 [2023-11-10 11:48:33,971 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-10 11:48:33,972 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-11-10 11:48:33,975 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-10 11:48:33,975 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-10 11:48:33,978 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-10 11:48:33,978 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 11:48:33" (1/1) ... [2023-11-10 11:48:33,979 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6f19e487 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 11:48:33, skipping insertion in model container [2023-11-10 11:48:33,980 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 11:48:33" (1/1) ... [2023-11-10 11:48:34,021 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-10 11:48:34,167 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/thin002_pso.oepc_pso.opt_tso.oepc_tso.opt.i[975,988] [2023-11-10 11:48:34,308 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-10 11:48:34,318 INFO L202 MainTranslator]: Completed pre-run [2023-11-10 11:48:34,328 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/thin002_pso.oepc_pso.opt_tso.oepc_tso.opt.i[975,988] [2023-11-10 11:48:34,364 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-10 11:48:34,382 WARN L672 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-10 11:48:34,382 WARN L672 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-10 11:48:34,387 INFO L206 MainTranslator]: Completed translation [2023-11-10 11:48:34,388 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 11:48:34 WrapperNode [2023-11-10 11:48:34,388 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-10 11:48:34,389 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-10 11:48:34,389 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-10 11:48:34,389 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-10 11:48:34,394 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 11:48:34" (1/1) ... [2023-11-10 11:48:34,408 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 11:48:34" (1/1) ... [2023-11-10 11:48:34,424 INFO L138 Inliner]: procedures = 177, calls = 66, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 84 [2023-11-10 11:48:34,425 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-10 11:48:34,425 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-10 11:48:34,425 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-10 11:48:34,425 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-10 11:48:34,432 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 11:48:34" (1/1) ... [2023-11-10 11:48:34,432 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 11:48:34" (1/1) ... [2023-11-10 11:48:34,436 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 11:48:34" (1/1) ... [2023-11-10 11:48:34,437 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 11:48:34" (1/1) ... [2023-11-10 11:48:34,441 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 11:48:34" (1/1) ... [2023-11-10 11:48:34,442 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 11:48:34" (1/1) ... [2023-11-10 11:48:34,443 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 11:48:34" (1/1) ... [2023-11-10 11:48:34,444 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 11:48:34" (1/1) ... [2023-11-10 11:48:34,446 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-10 11:48:34,446 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-10 11:48:34,447 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-10 11:48:34,447 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-10 11:48:34,447 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 11:48:34" (1/1) ... [2023-11-10 11:48:34,451 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-10 11:48:34,460 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-10 11:48:34,470 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) [2023-11-10 11:48:34,473 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 [2023-11-10 11:48:34,495 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-10 11:48:34,495 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-10 11:48:34,496 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-10 11:48:34,496 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-10 11:48:34,496 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-10 11:48:34,496 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-11-10 11:48:34,496 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-11-10 11:48:34,496 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-11-10 11:48:34,496 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-11-10 11:48:34,496 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-11-10 11:48:34,496 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-11-10 11:48:34,496 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2023-11-10 11:48:34,497 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2023-11-10 11:48:34,497 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-10 11:48:34,497 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-10 11:48:34,497 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-10 11:48:34,497 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-10 11:48:34,498 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-10 11:48:34,588 INFO L236 CfgBuilder]: Building ICFG [2023-11-10 11:48:34,590 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-10 11:48:34,795 INFO L277 CfgBuilder]: Performing block encoding [2023-11-10 11:48:34,801 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-10 11:48:34,801 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-10 11:48:34,804 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 11:48:34 BoogieIcfgContainer [2023-11-10 11:48:34,804 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-10 11:48:34,806 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-10 11:48:34,806 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-10 11:48:34,808 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-10 11:48:34,809 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.11 11:48:33" (1/3) ... [2023-11-10 11:48:34,809 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7322ff3f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 11:48:34, skipping insertion in model container [2023-11-10 11:48:34,809 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 11:48:34" (2/3) ... [2023-11-10 11:48:34,809 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7322ff3f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 11:48:34, skipping insertion in model container [2023-11-10 11:48:34,809 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 11:48:34" (3/3) ... [2023-11-10 11:48:34,810 INFO L112 eAbstractionObserver]: Analyzing ICFG thin002_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2023-11-10 11:48:34,823 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-10 11:48:34,823 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-10 11:48:34,823 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-10 11:48:34,862 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-10 11:48:34,887 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 123 places, 112 transitions, 240 flow [2023-11-10 11:48:34,939 INFO L124 PetriNetUnfolderBase]: 2/108 cut-off events. [2023-11-10 11:48:34,939 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-10 11:48:34,944 INFO L83 FinitePrefix]: Finished finitePrefix Result has 121 conditions, 108 events. 2/108 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 66 event pairs, 0 based on Foata normal form. 0/105 useless extension candidates. Maximal degree in co-relation 90. Up to 2 conditions per place. [2023-11-10 11:48:34,944 INFO L82 GeneralOperation]: Start removeDead. Operand has 123 places, 112 transitions, 240 flow [2023-11-10 11:48:34,950 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 103 places, 91 transitions, 194 flow [2023-11-10 11:48:34,961 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-10 11:48:34,966 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;@76ee413, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-10 11:48:34,966 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2023-11-10 11:48:35,002 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-10 11:48:35,002 INFO L124 PetriNetUnfolderBase]: 1/90 cut-off events. [2023-11-10 11:48:35,003 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-10 11:48:35,003 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-10 11:48:35,003 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-10 11:48:35,004 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)] === [2023-11-10 11:48:35,009 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-10 11:48:35,009 INFO L85 PathProgramCache]: Analyzing trace with hash -482207557, now seen corresponding path program 1 times [2023-11-10 11:48:35,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-10 11:48:35,016 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1087381864] [2023-11-10 11:48:35,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-10 11:48:35,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-10 11:48:35,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-10 11:48:35,585 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-10 11:48:35,586 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-10 11:48:35,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1087381864] [2023-11-10 11:48:35,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1087381864] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-10 11:48:35,587 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-10 11:48:35,587 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-10 11:48:35,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523230746] [2023-11-10 11:48:35,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-10 11:48:35,602 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-10 11:48:35,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-10 11:48:35,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-10 11:48:35,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-10 11:48:35,641 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 112 [2023-11-10 11:48:35,646 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 91 transitions, 194 flow. Second operand has 6 states, 6 states have (on average 90.33333333333333) internal successors, (542), 6 states have internal predecessors, (542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 11:48:35,646 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-10 11:48:35,646 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 112 [2023-11-10 11:48:35,647 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-10 11:48:36,036 INFO L124 PetriNetUnfolderBase]: 287/817 cut-off events. [2023-11-10 11:48:36,036 INFO L125 PetriNetUnfolderBase]: For 15/15 co-relation queries the response was YES. [2023-11-10 11:48:36,044 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1314 conditions, 817 events. 287/817 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 4788 event pairs, 98 based on Foata normal form. 19/813 useless extension candidates. Maximal degree in co-relation 1276. Up to 276 conditions per place. [2023-11-10 11:48:36,050 INFO L140 encePairwiseOnDemand]: 102/112 looper letters, 20 selfloop transitions, 5 changer transitions 31/128 dead transitions. [2023-11-10 11:48:36,050 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 128 transitions, 389 flow [2023-11-10 11:48:36,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-10 11:48:36,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-10 11:48:36,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 852 transitions. [2023-11-10 11:48:36,070 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8452380952380952 [2023-11-10 11:48:36,071 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 852 transitions. [2023-11-10 11:48:36,072 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 852 transitions. [2023-11-10 11:48:36,076 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-10 11:48:36,079 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 852 transitions. [2023-11-10 11:48:36,083 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 94.66666666666667) internal successors, (852), 9 states have internal predecessors, (852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 11:48:36,089 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 112.0) internal successors, (1120), 10 states have internal predecessors, (1120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 11:48:36,090 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 112.0) internal successors, (1120), 10 states have internal predecessors, (1120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 11:48:36,092 INFO L175 Difference]: Start difference. First operand has 103 places, 91 transitions, 194 flow. Second operand 9 states and 852 transitions. [2023-11-10 11:48:36,093 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 128 transitions, 389 flow [2023-11-10 11:48:36,097 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 128 transitions, 382 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-10 11:48:36,102 INFO L231 Difference]: Finished difference. Result has 114 places, 94 transitions, 257 flow [2023-11-10 11:48:36,104 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=112, PETRI_DIFFERENCE_MINUEND_FLOW=188, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=257, PETRI_PLACES=114, PETRI_TRANSITIONS=94} [2023-11-10 11:48:36,108 INFO L281 CegarLoopForPetriNet]: 103 programPoint places, 11 predicate places. [2023-11-10 11:48:36,109 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 94 transitions, 257 flow [2023-11-10 11:48:36,109 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 90.33333333333333) internal successors, (542), 6 states have internal predecessors, (542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 11:48:36,109 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-10 11:48:36,111 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-10 11:48:36,111 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-10 11:48:36,111 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)] === [2023-11-10 11:48:36,112 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-10 11:48:36,112 INFO L85 PathProgramCache]: Analyzing trace with hash -350721796, now seen corresponding path program 1 times [2023-11-10 11:48:36,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-10 11:48:36,112 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1605469591] [2023-11-10 11:48:36,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-10 11:48:36,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-10 11:48:36,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-10 11:48:36,504 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-10 11:48:36,504 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-10 11:48:36,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1605469591] [2023-11-10 11:48:36,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1605469591] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-10 11:48:36,505 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-10 11:48:36,505 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-10 11:48:36,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441269830] [2023-11-10 11:48:36,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-10 11:48:36,506 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-10 11:48:36,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-10 11:48:36,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-10 11:48:36,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-10 11:48:36,509 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 112 [2023-11-10 11:48:36,510 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 94 transitions, 257 flow. Second operand has 7 states, 7 states have (on average 90.14285714285714) internal successors, (631), 7 states have internal predecessors, (631), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 11:48:36,510 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-10 11:48:36,510 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 112 [2023-11-10 11:48:36,510 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-10 11:48:36,704 INFO L124 PetriNetUnfolderBase]: 187/542 cut-off events. [2023-11-10 11:48:36,704 INFO L125 PetriNetUnfolderBase]: For 1268/1493 co-relation queries the response was YES. [2023-11-10 11:48:36,707 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1836 conditions, 542 events. 187/542 cut-off events. For 1268/1493 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 2523 event pairs, 13 based on Foata normal form. 14/531 useless extension candidates. Maximal degree in co-relation 1793. Up to 225 conditions per place. [2023-11-10 11:48:36,712 INFO L140 encePairwiseOnDemand]: 105/112 looper letters, 21 selfloop transitions, 4 changer transitions 28/125 dead transitions. [2023-11-10 11:48:36,712 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 125 transitions, 635 flow [2023-11-10 11:48:36,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-10 11:48:36,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-10 11:48:36,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 931 transitions. [2023-11-10 11:48:36,715 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.83125 [2023-11-10 11:48:36,715 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 931 transitions. [2023-11-10 11:48:36,715 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 931 transitions. [2023-11-10 11:48:36,717 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-10 11:48:36,717 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 931 transitions. [2023-11-10 11:48:36,719 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 93.1) internal successors, (931), 10 states have internal predecessors, (931), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 11:48:36,722 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 112.0) internal successors, (1232), 11 states have internal predecessors, (1232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 11:48:36,722 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 112.0) internal successors, (1232), 11 states have internal predecessors, (1232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 11:48:36,723 INFO L175 Difference]: Start difference. First operand has 114 places, 94 transitions, 257 flow. Second operand 10 states and 931 transitions. [2023-11-10 11:48:36,723 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 125 transitions, 635 flow [2023-11-10 11:48:36,732 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 125 transitions, 616 flow, removed 7 selfloop flow, removed 4 redundant places. [2023-11-10 11:48:36,734 INFO L231 Difference]: Finished difference. Result has 120 places, 94 transitions, 271 flow [2023-11-10 11:48:36,735 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=112, PETRI_DIFFERENCE_MINUEND_FLOW=246, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=271, PETRI_PLACES=120, PETRI_TRANSITIONS=94} [2023-11-10 11:48:36,735 INFO L281 CegarLoopForPetriNet]: 103 programPoint places, 17 predicate places. [2023-11-10 11:48:36,736 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 94 transitions, 271 flow [2023-11-10 11:48:36,736 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 90.14285714285714) internal successors, (631), 7 states have internal predecessors, (631), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 11:48:36,736 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-10 11:48:36,736 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-10 11:48:36,737 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-10 11:48:36,737 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)] === [2023-11-10 11:48:36,745 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-10 11:48:36,746 INFO L85 PathProgramCache]: Analyzing trace with hash 226712604, now seen corresponding path program 1 times [2023-11-10 11:48:36,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-10 11:48:36,746 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [244156878] [2023-11-10 11:48:36,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-10 11:48:36,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-10 11:48:36,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-10 11:48:36,973 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-10 11:48:36,975 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-10 11:48:36,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [244156878] [2023-11-10 11:48:36,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [244156878] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-10 11:48:36,980 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-10 11:48:36,980 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-10 11:48:36,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550208576] [2023-11-10 11:48:36,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-10 11:48:36,981 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-10 11:48:36,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-10 11:48:36,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-10 11:48:36,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-10 11:48:36,984 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 112 [2023-11-10 11:48:36,985 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 94 transitions, 271 flow. Second operand has 7 states, 7 states have (on average 88.28571428571429) internal successors, (618), 7 states have internal predecessors, (618), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 11:48:36,985 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-10 11:48:36,985 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 112 [2023-11-10 11:48:36,985 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-10 11:48:37,394 INFO L124 PetriNetUnfolderBase]: 282/831 cut-off events. [2023-11-10 11:48:37,394 INFO L125 PetriNetUnfolderBase]: For 1906/2199 co-relation queries the response was YES. [2023-11-10 11:48:37,397 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2687 conditions, 831 events. 282/831 cut-off events. For 1906/2199 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 4648 event pairs, 12 based on Foata normal form. 24/831 useless extension candidates. Maximal degree in co-relation 2637. Up to 284 conditions per place. [2023-11-10 11:48:37,401 INFO L140 encePairwiseOnDemand]: 101/112 looper letters, 29 selfloop transitions, 13 changer transitions 50/162 dead transitions. [2023-11-10 11:48:37,402 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 162 transitions, 984 flow [2023-11-10 11:48:37,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-10 11:48:37,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-11-10 11:48:37,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1555 transitions. [2023-11-10 11:48:37,406 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8167016806722689 [2023-11-10 11:48:37,406 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1555 transitions. [2023-11-10 11:48:37,406 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1555 transitions. [2023-11-10 11:48:37,407 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-10 11:48:37,407 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1555 transitions. [2023-11-10 11:48:37,412 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 91.47058823529412) internal successors, (1555), 17 states have internal predecessors, (1555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 11:48:37,415 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 112.0) internal successors, (2016), 18 states have internal predecessors, (2016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 11:48:37,415 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 112.0) internal successors, (2016), 18 states have internal predecessors, (2016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 11:48:37,416 INFO L175 Difference]: Start difference. First operand has 120 places, 94 transitions, 271 flow. Second operand 17 states and 1555 transitions. [2023-11-10 11:48:37,416 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 162 transitions, 984 flow [2023-11-10 11:48:37,425 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 162 transitions, 918 flow, removed 28 selfloop flow, removed 9 redundant places. [2023-11-10 11:48:37,428 INFO L231 Difference]: Finished difference. Result has 136 places, 101 transitions, 432 flow [2023-11-10 11:48:37,428 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=112, PETRI_DIFFERENCE_MINUEND_FLOW=251, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=432, PETRI_PLACES=136, PETRI_TRANSITIONS=101} [2023-11-10 11:48:37,430 INFO L281 CegarLoopForPetriNet]: 103 programPoint places, 33 predicate places. [2023-11-10 11:48:37,430 INFO L495 AbstractCegarLoop]: Abstraction has has 136 places, 101 transitions, 432 flow [2023-11-10 11:48:37,430 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 88.28571428571429) internal successors, (618), 7 states have internal predecessors, (618), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 11:48:37,430 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-10 11:48:37,431 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-10 11:48:37,431 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-10 11:48:37,431 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)] === [2023-11-10 11:48:37,432 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-10 11:48:37,432 INFO L85 PathProgramCache]: Analyzing trace with hash 903628701, now seen corresponding path program 1 times [2023-11-10 11:48:37,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-10 11:48:37,432 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [811457872] [2023-11-10 11:48:37,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-10 11:48:37,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-10 11:48:37,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-10 11:48:37,648 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-10 11:48:37,649 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-10 11:48:37,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [811457872] [2023-11-10 11:48:37,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [811457872] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-10 11:48:37,649 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-10 11:48:37,649 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-10 11:48:37,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656740803] [2023-11-10 11:48:37,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-10 11:48:37,650 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-10 11:48:37,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-10 11:48:37,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-10 11:48:37,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-11-10 11:48:37,652 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 112 [2023-11-10 11:48:37,653 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 101 transitions, 432 flow. Second operand has 8 states, 8 states have (on average 88.125) internal successors, (705), 8 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) [2023-11-10 11:48:37,653 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-10 11:48:37,653 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 112 [2023-11-10 11:48:37,654 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-10 11:48:37,843 INFO L124 PetriNetUnfolderBase]: 148/550 cut-off events. [2023-11-10 11:48:37,843 INFO L125 PetriNetUnfolderBase]: For 6286/7088 co-relation queries the response was YES. [2023-11-10 11:48:37,846 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2702 conditions, 550 events. 148/550 cut-off events. For 6286/7088 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 2961 event pairs, 14 based on Foata normal form. 15/538 useless extension candidates. Maximal degree in co-relation 2642. Up to 170 conditions per place. [2023-11-10 11:48:37,849 INFO L140 encePairwiseOnDemand]: 103/112 looper letters, 23 selfloop transitions, 5 changer transitions 34/132 dead transitions. [2023-11-10 11:48:37,849 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 132 transitions, 1117 flow [2023-11-10 11:48:37,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-10 11:48:37,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-11-10 11:48:37,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1000 transitions. [2023-11-10 11:48:37,852 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8116883116883117 [2023-11-10 11:48:37,852 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1000 transitions. [2023-11-10 11:48:37,852 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1000 transitions. [2023-11-10 11:48:37,853 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-10 11:48:37,853 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1000 transitions. [2023-11-10 11:48:37,855 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 90.9090909090909) internal successors, (1000), 11 states have internal predecessors, (1000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 11:48:37,857 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 112.0) internal successors, (1344), 12 states have internal predecessors, (1344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 11:48:37,858 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 112.0) internal successors, (1344), 12 states have internal predecessors, (1344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 11:48:37,858 INFO L175 Difference]: Start difference. First operand has 136 places, 101 transitions, 432 flow. Second operand 11 states and 1000 transitions. [2023-11-10 11:48:37,858 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 132 transitions, 1117 flow [2023-11-10 11:48:37,869 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 132 transitions, 784 flow, removed 163 selfloop flow, removed 13 redundant places. [2023-11-10 11:48:37,871 INFO L231 Difference]: Finished difference. Result has 129 places, 93 transitions, 314 flow [2023-11-10 11:48:37,871 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=112, PETRI_DIFFERENCE_MINUEND_FLOW=344, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=314, PETRI_PLACES=129, PETRI_TRANSITIONS=93} [2023-11-10 11:48:37,872 INFO L281 CegarLoopForPetriNet]: 103 programPoint places, 26 predicate places. [2023-11-10 11:48:37,872 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 93 transitions, 314 flow [2023-11-10 11:48:37,872 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 88.125) internal successors, (705), 8 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) [2023-11-10 11:48:37,873 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-10 11:48:37,873 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-10 11:48:37,873 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-10 11:48:37,873 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)] === [2023-11-10 11:48:37,873 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-10 11:48:37,873 INFO L85 PathProgramCache]: Analyzing trace with hash 1873376799, now seen corresponding path program 1 times [2023-11-10 11:48:37,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-10 11:48:37,874 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1097215973] [2023-11-10 11:48:37,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-10 11:48:37,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-10 11:48:37,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-10 11:48:38,010 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-10 11:48:38,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-10 11:48:38,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1097215973] [2023-11-10 11:48:38,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1097215973] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-10 11:48:38,011 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-10 11:48:38,011 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-10 11:48:38,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107730526] [2023-11-10 11:48:38,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-10 11:48:38,011 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-10 11:48:38,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-10 11:48:38,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-10 11:48:38,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-10 11:48:38,013 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 112 [2023-11-10 11:48:38,013 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 93 transitions, 314 flow. Second operand has 7 states, 7 states have (on average 90.28571428571429) internal successors, (632), 7 states have internal predecessors, (632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 11:48:38,014 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-10 11:48:38,014 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 112 [2023-11-10 11:48:38,014 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-10 11:48:38,152 INFO L124 PetriNetUnfolderBase]: 45/306 cut-off events. [2023-11-10 11:48:38,152 INFO L125 PetriNetUnfolderBase]: For 741/807 co-relation queries the response was YES. [2023-11-10 11:48:38,154 INFO L83 FinitePrefix]: Finished finitePrefix Result has 875 conditions, 306 events. 45/306 cut-off events. For 741/807 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1226 event pairs, 16 based on Foata normal form. 4/298 useless extension candidates. Maximal degree in co-relation 836. Up to 63 conditions per place. [2023-11-10 11:48:38,155 INFO L140 encePairwiseOnDemand]: 106/112 looper letters, 24 selfloop transitions, 3 changer transitions 16/115 dead transitions. [2023-11-10 11:48:38,155 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 115 transitions, 630 flow [2023-11-10 11:48:38,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-10 11:48:38,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-10 11:48:38,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 834 transitions. [2023-11-10 11:48:38,157 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8273809523809523 [2023-11-10 11:48:38,157 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 834 transitions. [2023-11-10 11:48:38,157 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 834 transitions. [2023-11-10 11:48:38,157 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-10 11:48:38,158 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 834 transitions. [2023-11-10 11:48:38,159 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 92.66666666666667) internal successors, (834), 9 states have internal predecessors, (834), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 11:48:38,160 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 112.0) internal successors, (1120), 10 states have internal predecessors, (1120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 11:48:38,161 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 112.0) internal successors, (1120), 10 states have internal predecessors, (1120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 11:48:38,161 INFO L175 Difference]: Start difference. First operand has 129 places, 93 transitions, 314 flow. Second operand 9 states and 834 transitions. [2023-11-10 11:48:38,161 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 115 transitions, 630 flow [2023-11-10 11:48:38,163 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 115 transitions, 496 flow, removed 50 selfloop flow, removed 17 redundant places. [2023-11-10 11:48:38,164 INFO L231 Difference]: Finished difference. Result has 121 places, 93 transitions, 273 flow [2023-11-10 11:48:38,164 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=112, PETRI_DIFFERENCE_MINUEND_FLOW=250, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=273, PETRI_PLACES=121, PETRI_TRANSITIONS=93} [2023-11-10 11:48:38,165 INFO L281 CegarLoopForPetriNet]: 103 programPoint places, 18 predicate places. [2023-11-10 11:48:38,165 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 93 transitions, 273 flow [2023-11-10 11:48:38,165 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 90.28571428571429) internal successors, (632), 7 states have internal predecessors, (632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 11:48:38,165 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-10 11:48:38,165 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-10 11:48:38,165 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-10 11:48:38,166 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)] === [2023-11-10 11:48:38,166 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-10 11:48:38,166 INFO L85 PathProgramCache]: Analyzing trace with hash 1645237122, now seen corresponding path program 1 times [2023-11-10 11:48:38,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-10 11:48:38,166 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1997718996] [2023-11-10 11:48:38,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-10 11:48:38,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-10 11:48:38,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-10 11:48:38,333 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-10 11:48:38,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-10 11:48:38,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1997718996] [2023-11-10 11:48:38,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1997718996] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-10 11:48:38,334 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-10 11:48:38,334 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-10 11:48:38,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208772788] [2023-11-10 11:48:38,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-10 11:48:38,335 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-10 11:48:38,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-10 11:48:38,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-10 11:48:38,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-11-10 11:48:38,337 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 112 [2023-11-10 11:48:38,337 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 93 transitions, 273 flow. Second operand has 8 states, 8 states have (on average 88.25) internal successors, (706), 8 states have internal predecessors, (706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 11:48:38,338 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-10 11:48:38,338 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 112 [2023-11-10 11:48:38,338 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-10 11:48:38,475 INFO L124 PetriNetUnfolderBase]: 50/282 cut-off events. [2023-11-10 11:48:38,476 INFO L125 PetriNetUnfolderBase]: For 433/639 co-relation queries the response was YES. [2023-11-10 11:48:38,477 INFO L83 FinitePrefix]: Finished finitePrefix Result has 739 conditions, 282 events. 50/282 cut-off events. For 433/639 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 1098 event pairs, 14 based on Foata normal form. 4/271 useless extension candidates. Maximal degree in co-relation 706. Up to 62 conditions per place. [2023-11-10 11:48:38,478 INFO L140 encePairwiseOnDemand]: 104/112 looper letters, 20 selfloop transitions, 4 changer transitions 19/113 dead transitions. [2023-11-10 11:48:38,478 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 113 transitions, 510 flow [2023-11-10 11:48:38,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-10 11:48:38,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-10 11:48:38,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 902 transitions. [2023-11-10 11:48:38,481 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8053571428571429 [2023-11-10 11:48:38,481 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 902 transitions. [2023-11-10 11:48:38,481 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 902 transitions. [2023-11-10 11:48:38,482 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-10 11:48:38,482 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 902 transitions. [2023-11-10 11:48:38,484 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 90.2) internal successors, (902), 10 states have internal predecessors, (902), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 11:48:38,486 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 112.0) internal successors, (1232), 11 states have internal predecessors, (1232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 11:48:38,487 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 112.0) internal successors, (1232), 11 states have internal predecessors, (1232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 11:48:38,487 INFO L175 Difference]: Start difference. First operand has 121 places, 93 transitions, 273 flow. Second operand 10 states and 902 transitions. [2023-11-10 11:48:38,487 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 113 transitions, 510 flow [2023-11-10 11:48:38,489 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 113 transitions, 474 flow, removed 14 selfloop flow, removed 8 redundant places. [2023-11-10 11:48:38,490 INFO L231 Difference]: Finished difference. Result has 124 places, 92 transitions, 280 flow [2023-11-10 11:48:38,491 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=112, PETRI_DIFFERENCE_MINUEND_FLOW=255, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=280, PETRI_PLACES=124, PETRI_TRANSITIONS=92} [2023-11-10 11:48:38,491 INFO L281 CegarLoopForPetriNet]: 103 programPoint places, 21 predicate places. [2023-11-10 11:48:38,492 INFO L495 AbstractCegarLoop]: Abstraction has has 124 places, 92 transitions, 280 flow [2023-11-10 11:48:38,492 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 88.25) internal successors, (706), 8 states have internal predecessors, (706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 11:48:38,492 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-10 11:48:38,492 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-10 11:48:38,492 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-10 11:48:38,493 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)] === [2023-11-10 11:48:38,493 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-10 11:48:38,493 INFO L85 PathProgramCache]: Analyzing trace with hash -951831883, now seen corresponding path program 1 times [2023-11-10 11:48:38,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-10 11:48:38,493 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1182016909] [2023-11-10 11:48:38,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-10 11:48:38,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-10 11:48:38,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-10 11:48:38,641 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-10 11:48:38,641 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-10 11:48:38,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1182016909] [2023-11-10 11:48:38,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1182016909] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-10 11:48:38,642 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-10 11:48:38,642 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-10 11:48:38,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [701521201] [2023-11-10 11:48:38,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-10 11:48:38,643 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-10 11:48:38,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-10 11:48:38,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-10 11:48:38,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-10 11:48:38,644 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 112 [2023-11-10 11:48:38,645 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 92 transitions, 280 flow. Second operand has 7 states, 7 states have (on average 90.42857142857143) internal successors, (633), 7 states have internal predecessors, (633), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 11:48:38,645 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-10 11:48:38,645 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 112 [2023-11-10 11:48:38,645 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-10 11:48:38,746 INFO L124 PetriNetUnfolderBase]: 11/165 cut-off events. [2023-11-10 11:48:38,747 INFO L125 PetriNetUnfolderBase]: For 207/226 co-relation queries the response was YES. [2023-11-10 11:48:38,747 INFO L83 FinitePrefix]: Finished finitePrefix Result has 355 conditions, 165 events. 11/165 cut-off events. For 207/226 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 423 event pairs, 2 based on Foata normal form. 2/163 useless extension candidates. Maximal degree in co-relation 332. Up to 22 conditions per place. [2023-11-10 11:48:38,748 INFO L140 encePairwiseOnDemand]: 105/112 looper letters, 20 selfloop transitions, 4 changer transitions 10/106 dead transitions. [2023-11-10 11:48:38,748 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 106 transitions, 460 flow [2023-11-10 11:48:38,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-10 11:48:38,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-10 11:48:38,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 915 transitions. [2023-11-10 11:48:38,751 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8169642857142857 [2023-11-10 11:48:38,751 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 915 transitions. [2023-11-10 11:48:38,751 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 915 transitions. [2023-11-10 11:48:38,752 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-10 11:48:38,752 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 915 transitions. [2023-11-10 11:48:38,754 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 91.5) internal successors, (915), 10 states have internal predecessors, (915), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 11:48:38,756 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 112.0) internal successors, (1232), 11 states have internal predecessors, (1232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 11:48:38,757 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 112.0) internal successors, (1232), 11 states have internal predecessors, (1232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 11:48:38,757 INFO L175 Difference]: Start difference. First operand has 124 places, 92 transitions, 280 flow. Second operand 10 states and 915 transitions. [2023-11-10 11:48:38,757 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 106 transitions, 460 flow [2023-11-10 11:48:38,759 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 106 transitions, 399 flow, removed 23 selfloop flow, removed 11 redundant places. [2023-11-10 11:48:38,760 INFO L231 Difference]: Finished difference. Result has 123 places, 92 transitions, 269 flow [2023-11-10 11:48:38,760 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=112, PETRI_DIFFERENCE_MINUEND_FLOW=244, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=269, PETRI_PLACES=123, PETRI_TRANSITIONS=92} [2023-11-10 11:48:38,761 INFO L281 CegarLoopForPetriNet]: 103 programPoint places, 20 predicate places. [2023-11-10 11:48:38,761 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 92 transitions, 269 flow [2023-11-10 11:48:38,762 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 90.42857142857143) internal successors, (633), 7 states have internal predecessors, (633), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 11:48:38,762 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-10 11:48:38,762 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-10 11:48:38,762 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-10 11:48:38,762 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)] === [2023-11-10 11:48:38,763 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-10 11:48:38,763 INFO L85 PathProgramCache]: Analyzing trace with hash -1496049920, now seen corresponding path program 1 times [2023-11-10 11:48:38,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-10 11:48:38,763 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1501618179] [2023-11-10 11:48:38,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-10 11:48:38,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-10 11:48:38,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-10 11:48:39,071 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-10 11:48:39,072 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-10 11:48:39,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1501618179] [2023-11-10 11:48:39,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1501618179] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-10 11:48:39,072 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-10 11:48:39,072 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-10 11:48:39,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828776885] [2023-11-10 11:48:39,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-10 11:48:39,073 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-10 11:48:39,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-10 11:48:39,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-10 11:48:39,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-11-10 11:48:39,075 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 112 [2023-11-10 11:48:39,075 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 92 transitions, 269 flow. Second operand has 8 states, 8 states have (on average 88.375) internal successors, (707), 8 states have internal predecessors, (707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 11:48:39,075 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-10 11:48:39,076 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 112 [2023-11-10 11:48:39,076 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-10 11:48:39,221 INFO L124 PetriNetUnfolderBase]: 18/223 cut-off events. [2023-11-10 11:48:39,221 INFO L125 PetriNetUnfolderBase]: For 230/288 co-relation queries the response was YES. [2023-11-10 11:48:39,222 INFO L83 FinitePrefix]: Finished finitePrefix Result has 445 conditions, 223 events. 18/223 cut-off events. For 230/288 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 842 event pairs, 4 based on Foata normal form. 3/219 useless extension candidates. Maximal degree in co-relation 424. Up to 25 conditions per place. [2023-11-10 11:48:39,223 INFO L140 encePairwiseOnDemand]: 103/112 looper letters, 18 selfloop transitions, 5 changer transitions 18/111 dead transitions. [2023-11-10 11:48:39,223 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 111 transitions, 471 flow [2023-11-10 11:48:39,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-10 11:48:39,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-11-10 11:48:39,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 987 transitions. [2023-11-10 11:48:39,226 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8011363636363636 [2023-11-10 11:48:39,226 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 987 transitions. [2023-11-10 11:48:39,226 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 987 transitions. [2023-11-10 11:48:39,227 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-10 11:48:39,227 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 987 transitions. [2023-11-10 11:48:39,229 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 89.72727272727273) internal successors, (987), 11 states have internal predecessors, (987), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 11:48:39,232 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 112.0) internal successors, (1344), 12 states have internal predecessors, (1344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 11:48:39,233 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 112.0) internal successors, (1344), 12 states have internal predecessors, (1344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 11:48:39,233 INFO L175 Difference]: Start difference. First operand has 123 places, 92 transitions, 269 flow. Second operand 11 states and 987 transitions. [2023-11-10 11:48:39,233 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 111 transitions, 471 flow [2023-11-10 11:48:39,235 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 111 transitions, 421 flow, removed 21 selfloop flow, removed 9 redundant places. [2023-11-10 11:48:39,236 INFO L231 Difference]: Finished difference. Result has 126 places, 90 transitions, 260 flow [2023-11-10 11:48:39,237 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=112, PETRI_DIFFERENCE_MINUEND_FLOW=243, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=260, PETRI_PLACES=126, PETRI_TRANSITIONS=90} [2023-11-10 11:48:39,240 INFO L281 CegarLoopForPetriNet]: 103 programPoint places, 23 predicate places. [2023-11-10 11:48:39,240 INFO L495 AbstractCegarLoop]: Abstraction has has 126 places, 90 transitions, 260 flow [2023-11-10 11:48:39,240 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 88.375) internal successors, (707), 8 states have internal predecessors, (707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 11:48:39,241 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-10 11:48:39,241 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-10 11:48:39,241 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-10 11:48:39,241 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)] === [2023-11-10 11:48:39,241 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-10 11:48:39,242 INFO L85 PathProgramCache]: Analyzing trace with hash 1183259623, now seen corresponding path program 1 times [2023-11-10 11:48:39,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-10 11:48:39,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1639770199] [2023-11-10 11:48:39,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-10 11:48:39,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-10 11:48:39,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-10 11:48:39,453 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-10 11:48:39,453 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-10 11:48:39,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1639770199] [2023-11-10 11:48:39,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1639770199] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-10 11:48:39,454 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-10 11:48:39,454 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-10 11:48:39,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234575985] [2023-11-10 11:48:39,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-10 11:48:39,454 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-10 11:48:39,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-10 11:48:39,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-10 11:48:39,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-11-10 11:48:39,456 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 112 [2023-11-10 11:48:39,457 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 90 transitions, 260 flow. Second operand has 8 states, 8 states have (on average 88.375) internal successors, (707), 8 states have internal predecessors, (707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 11:48:39,457 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-10 11:48:39,457 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 112 [2023-11-10 11:48:39,457 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-10 11:48:39,579 INFO L124 PetriNetUnfolderBase]: 7/117 cut-off events. [2023-11-10 11:48:39,579 INFO L125 PetriNetUnfolderBase]: For 77/77 co-relation queries the response was YES. [2023-11-10 11:48:39,580 INFO L83 FinitePrefix]: Finished finitePrefix Result has 236 conditions, 117 events. 7/117 cut-off events. For 77/77 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 177 event pairs, 3 based on Foata normal form. 2/115 useless extension candidates. Maximal degree in co-relation 219. Up to 15 conditions per place. [2023-11-10 11:48:39,580 INFO L140 encePairwiseOnDemand]: 104/112 looper letters, 0 selfloop transitions, 0 changer transitions 95/95 dead transitions. [2023-11-10 11:48:39,580 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 95 transitions, 336 flow [2023-11-10 11:48:39,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-10 11:48:39,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-11-10 11:48:39,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 974 transitions. [2023-11-10 11:48:39,583 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7905844155844156 [2023-11-10 11:48:39,583 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 974 transitions. [2023-11-10 11:48:39,583 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 974 transitions. [2023-11-10 11:48:39,584 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-10 11:48:39,584 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 974 transitions. [2023-11-10 11:48:39,586 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 88.54545454545455) internal successors, (974), 11 states have internal predecessors, (974), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 11:48:39,588 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 112.0) internal successors, (1344), 12 states have internal predecessors, (1344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 11:48:39,589 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 112.0) internal successors, (1344), 12 states have internal predecessors, (1344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 11:48:39,589 INFO L175 Difference]: Start difference. First operand has 126 places, 90 transitions, 260 flow. Second operand 11 states and 974 transitions. [2023-11-10 11:48:39,589 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 95 transitions, 336 flow [2023-11-10 11:48:39,590 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 95 transitions, 276 flow, removed 22 selfloop flow, removed 14 redundant places. [2023-11-10 11:48:39,591 INFO L231 Difference]: Finished difference. Result has 114 places, 0 transitions, 0 flow [2023-11-10 11:48:39,591 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=112, PETRI_DIFFERENCE_MINUEND_FLOW=208, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=0, PETRI_PLACES=114, PETRI_TRANSITIONS=0} [2023-11-10 11:48:39,592 INFO L281 CegarLoopForPetriNet]: 103 programPoint places, 11 predicate places. [2023-11-10 11:48:39,592 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 0 transitions, 0 flow [2023-11-10 11:48:39,593 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 88.375) internal successors, (707), 8 states have internal predecessors, (707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 11:48:39,595 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (4 of 5 remaining) [2023-11-10 11:48:39,595 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 5 remaining) [2023-11-10 11:48:39,595 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 5 remaining) [2023-11-10 11:48:39,596 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 5 remaining) [2023-11-10 11:48:39,596 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 5 remaining) [2023-11-10 11:48:39,597 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-10 11:48:39,597 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-10 11:48:39,600 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-10 11:48:39,600 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-10 11:48:39,611 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.11 11:48:39 BasicIcfg [2023-11-10 11:48:39,611 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-10 11:48:39,611 INFO L158 Benchmark]: Toolchain (without parser) took 5638.91ms. Allocated memory was 307.2MB in the beginning and 408.9MB in the end (delta: 101.7MB). Free memory was 255.5MB in the beginning and 255.5MB in the end (delta: 29.4kB). Peak memory consumption was 102.5MB. Max. memory is 8.0GB. [2023-11-10 11:48:39,612 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 255.9MB. Free memory was 207.1MB in the beginning and 207.0MB in the end (delta: 138.4kB). There was no memory consumed. Max. memory is 8.0GB. [2023-11-10 11:48:39,612 INFO L158 Benchmark]: CACSL2BoogieTranslator took 413.41ms. Allocated memory is still 307.2MB. Free memory was 255.3MB in the beginning and 234.6MB in the end (delta: 20.7MB). Peak memory consumption was 21.0MB. Max. memory is 8.0GB. [2023-11-10 11:48:39,612 INFO L158 Benchmark]: Boogie Procedure Inliner took 36.19ms. Allocated memory is still 307.2MB. Free memory was 234.6MB in the beginning and 232.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-11-10 11:48:39,614 INFO L158 Benchmark]: Boogie Preprocessor took 20.70ms. Allocated memory is still 307.2MB. Free memory was 232.5MB in the beginning and 230.9MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-11-10 11:48:39,614 INFO L158 Benchmark]: RCFGBuilder took 357.72ms. Allocated memory is still 307.2MB. Free memory was 230.7MB in the beginning and 266.0MB in the end (delta: -35.3MB). Peak memory consumption was 13.9MB. Max. memory is 8.0GB. [2023-11-10 11:48:39,614 INFO L158 Benchmark]: TraceAbstraction took 4805.20ms. Allocated memory was 307.2MB in the beginning and 408.9MB in the end (delta: 101.7MB). Free memory was 265.5MB in the beginning and 255.5MB in the end (delta: 10.0MB). Peak memory consumption was 111.7MB. Max. memory is 8.0GB. [2023-11-10 11:48:39,617 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 255.9MB. Free memory was 207.1MB in the beginning and 207.0MB in the end (delta: 138.4kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 413.41ms. Allocated memory is still 307.2MB. Free memory was 255.3MB in the beginning and 234.6MB in the end (delta: 20.7MB). Peak memory consumption was 21.0MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 36.19ms. Allocated memory is still 307.2MB. Free memory was 234.6MB in the beginning and 232.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 20.70ms. Allocated memory is still 307.2MB. Free memory was 232.5MB in the beginning and 230.9MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 357.72ms. Allocated memory is still 307.2MB. Free memory was 230.7MB in the beginning and 266.0MB in the end (delta: -35.3MB). Peak memory consumption was 13.9MB. Max. memory is 8.0GB. * TraceAbstraction took 4805.20ms. Allocated memory was 307.2MB in the beginning and 408.9MB in the end (delta: 101.7MB). Free memory was 265.5MB in the beginning and 255.5MB in the end (delta: 10.0MB). Peak memory consumption was 111.7MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 18]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 9 procedures, 147 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: 4.7s, OverallIterations: 9, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 2.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 385 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 385 mSDsluCounter, 707 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 532 mSDsCounter, 22 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 482 IncrementalHoareTripleChecker+Invalid, 504 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 22 mSolverCounterUnsat, 175 mSDtfsCounter, 482 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 126 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 142 ImplicationChecksByTransitivity, 1.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=432occurred in iteration=3, InterpolantAutomatonStates: 98, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.0s InterpolantComputationTime, 598 NumberOfCodeBlocks, 598 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 589 ConstructedInterpolants, 0 QuantifiedInterpolants, 3333 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-11-10 11:48:39,640 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...