/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf --traceabstraction.order.of.the.error.locations.to.be.checked TOGETHER -tc /storage/repos/CAV22/benchmarks/AutomizerCInline.xml -i /storage/repos/CAV22/benchmarks/increased_bounds/weaver_chl-sre-trans.wvr_bound2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-19404b3-m [2023-08-03 19:49:24,301 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-03 19:49:24,369 INFO L114 SettingsManager]: Loading settings from /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-03 19:49:24,377 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-03 19:49:24,377 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-08-03 19:49:24,378 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Translation Mode: [2023-08-03 19:49:24,378 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-03 19:49:24,412 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-03 19:49:24,412 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-03 19:49:24,415 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-03 19:49:24,416 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-03 19:49:24,416 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-03 19:49:24,417 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-03 19:49:24,418 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-03 19:49:24,419 INFO L153 SettingsManager]: * Use SBE=true [2023-08-03 19:49:24,419 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-03 19:49:24,419 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-03 19:49:24,419 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-03 19:49:24,419 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-03 19:49:24,420 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-03 19:49:24,420 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-03 19:49:24,420 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-03 19:49:24,420 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-03 19:49:24,421 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-03 19:49:24,422 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-03 19:49:24,422 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-03 19:49:24,422 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-03 19:49:24,423 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-03 19:49:24,423 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-03 19:49:24,423 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-03 19:49:24,424 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 19:49:24,424 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-03 19:49:24,424 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-03 19:49:24,424 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-03 19:49:24,424 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-03 19:49:24,425 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-03 19:49:24,425 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-03 19:49:24,425 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-03 19:49:24,425 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-03 19:49:24,425 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-03 19:49:24,425 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-03 19:49:24,426 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> TOGETHER [2023-08-03 19:49:24,636 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-03 19:49:24,660 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-03 19:49:24,662 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-03 19:49:24,663 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-03 19:49:24,664 INFO L274 PluginConnector]: CDTParser initialized [2023-08-03 19:49:24,664 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/CAV22/benchmarks/increased_bounds/weaver_chl-sre-trans.wvr_bound2.c [2023-08-03 19:49:25,810 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-03 19:49:25,954 INFO L384 CDTParser]: Found 1 translation units. [2023-08-03 19:49:25,954 INFO L180 CDTParser]: Scanning /storage/repos/CAV22/benchmarks/increased_bounds/weaver_chl-sre-trans.wvr_bound2.c [2023-08-03 19:49:25,959 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/08041decf/e38f8889d14b4d419134113427b1559d/FLAG5fe1edcb4 [2023-08-03 19:49:25,971 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/08041decf/e38f8889d14b4d419134113427b1559d [2023-08-03 19:49:25,973 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-03 19:49:25,974 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-03 19:49:25,975 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-03 19:49:25,975 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-03 19:49:25,978 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-03 19:49:25,978 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 07:49:25" (1/1) ... [2023-08-03 19:49:25,979 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@e3cd560 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:49:25, skipping insertion in model container [2023-08-03 19:49:25,979 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 07:49:25" (1/1) ... [2023-08-03 19:49:26,000 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-03 19:49:26,163 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/CAV22/benchmarks/increased_bounds/weaver_chl-sre-trans.wvr_bound2.c[2515,2528] [2023-08-03 19:49:26,165 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 19:49:26,172 INFO L201 MainTranslator]: Completed pre-run [2023-08-03 19:49:26,193 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/CAV22/benchmarks/increased_bounds/weaver_chl-sre-trans.wvr_bound2.c[2515,2528] [2023-08-03 19:49:26,194 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 19:49:26,206 INFO L206 MainTranslator]: Completed translation [2023-08-03 19:49:26,206 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:49:26 WrapperNode [2023-08-03 19:49:26,206 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-03 19:49:26,207 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-03 19:49:26,208 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-03 19:49:26,208 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-03 19:49:26,214 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:49:26" (1/1) ... [2023-08-03 19:49:26,220 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:49:26" (1/1) ... [2023-08-03 19:49:26,238 INFO L138 Inliner]: procedures = 22, calls = 25, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 121 [2023-08-03 19:49:26,239 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-03 19:49:26,240 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-03 19:49:26,240 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-03 19:49:26,240 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-03 19:49:26,248 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:49:26" (1/1) ... [2023-08-03 19:49:26,248 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:49:26" (1/1) ... [2023-08-03 19:49:26,258 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:49:26" (1/1) ... [2023-08-03 19:49:26,258 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:49:26" (1/1) ... [2023-08-03 19:49:26,265 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:49:26" (1/1) ... [2023-08-03 19:49:26,268 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:49:26" (1/1) ... [2023-08-03 19:49:26,269 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:49:26" (1/1) ... [2023-08-03 19:49:26,270 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:49:26" (1/1) ... [2023-08-03 19:49:26,272 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-03 19:49:26,273 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-03 19:49:26,273 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-03 19:49:26,273 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-03 19:49:26,274 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:49:26" (1/1) ... [2023-08-03 19:49:26,279 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 19:49:26,290 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:49:26,302 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) [2023-08-03 19:49:26,332 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 [2023-08-03 19:49:26,344 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-03 19:49:26,345 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-03 19:49:26,345 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-03 19:49:26,345 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-03 19:49:26,345 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-03 19:49:26,345 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-08-03 19:49:26,345 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-08-03 19:49:26,345 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-03 19:49:26,345 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-03 19:49:26,345 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-03 19:49:26,346 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-03 19:49:26,347 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-03 19:49:26,347 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-03 19:49:26,348 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-03 19:49:26,349 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-03 19:49:26,462 INFO L236 CfgBuilder]: Building ICFG [2023-08-03 19:49:26,472 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-03 19:49:26,692 INFO L277 CfgBuilder]: Performing block encoding [2023-08-03 19:49:26,702 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-03 19:49:26,702 INFO L302 CfgBuilder]: Removed 6 assume(true) statements. [2023-08-03 19:49:26,704 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 07:49:26 BoogieIcfgContainer [2023-08-03 19:49:26,704 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-03 19:49:26,706 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-03 19:49:26,706 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-03 19:49:26,708 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-03 19:49:26,709 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.08 07:49:25" (1/3) ... [2023-08-03 19:49:26,709 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76d03f77 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 07:49:26, skipping insertion in model container [2023-08-03 19:49:26,709 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:49:26" (2/3) ... [2023-08-03 19:49:26,709 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76d03f77 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 07:49:26, skipping insertion in model container [2023-08-03 19:49:26,710 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 07:49:26" (3/3) ... [2023-08-03 19:49:26,711 INFO L112 eAbstractionObserver]: Analyzing ICFG weaver_chl-sre-trans.wvr_bound2.c [2023-08-03 19:49:26,717 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-03 19:49:26,725 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-03 19:49:26,725 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-03 19:49:26,725 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-03 19:49:26,797 INFO L144 ThreadInstanceAdder]: Constructed 9 joinOtherThreadTransitions. [2023-08-03 19:49:26,830 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 123 places, 132 transitions, 306 flow [2023-08-03 19:49:26,992 INFO L124 PetriNetUnfolderBase]: 82/572 cut-off events. [2023-08-03 19:49:26,993 INFO L125 PetriNetUnfolderBase]: For 36/36 co-relation queries the response was YES. [2023-08-03 19:49:27,000 INFO L83 FinitePrefix]: Finished finitePrefix Result has 633 conditions, 572 events. 82/572 cut-off events. For 36/36 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 2876 event pairs, 0 based on Foata normal form. 0/480 useless extension candidates. Maximal degree in co-relation 325. Up to 16 conditions per place. [2023-08-03 19:49:27,000 INFO L82 GeneralOperation]: Start removeDead. Operand has 123 places, 132 transitions, 306 flow [2023-08-03 19:49:27,005 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 113 places, 122 transitions, 286 flow [2023-08-03 19:49:27,008 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 19:49:27,019 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 113 places, 122 transitions, 286 flow [2023-08-03 19:49:27,022 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 113 places, 122 transitions, 286 flow [2023-08-03 19:49:27,023 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 113 places, 122 transitions, 286 flow [2023-08-03 19:49:27,104 INFO L124 PetriNetUnfolderBase]: 82/492 cut-off events. [2023-08-03 19:49:27,104 INFO L125 PetriNetUnfolderBase]: For 36/36 co-relation queries the response was YES. [2023-08-03 19:49:27,105 INFO L83 FinitePrefix]: Finished finitePrefix Result has 553 conditions, 492 events. 82/492 cut-off events. For 36/36 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 2275 event pairs, 0 based on Foata normal form. 0/408 useless extension candidates. Maximal degree in co-relation 285. Up to 16 conditions per place. [2023-08-03 19:49:27,110 INFO L119 LiptonReduction]: Number of co-enabled transitions 1260 [2023-08-03 19:49:29,431 INFO L134 LiptonReduction]: Checked pairs total: 3926 [2023-08-03 19:49:29,432 INFO L136 LiptonReduction]: Total number of compositions: 93 [2023-08-03 19:49:29,444 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-03 19:49:29,449 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=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, 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;@1517dacd, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 19:49:29,449 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-08-03 19:49:29,453 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 19:49:29,454 INFO L124 PetriNetUnfolderBase]: 0/26 cut-off events. [2023-08-03 19:49:29,454 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 19:49:29,454 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:49:29,454 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-03 19:49:29,455 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 19:49:29,459 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:49:29,459 INFO L85 PathProgramCache]: Analyzing trace with hash 474412337, now seen corresponding path program 1 times [2023-08-03 19:49:29,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:49:29,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1882298289] [2023-08-03 19:49:29,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:49:29,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:49:29,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 19:49:29,548 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-03 19:49:29,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 19:49:29,581 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-03 19:49:29,583 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-03 19:49:29,584 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 4 remaining) [2023-08-03 19:49:29,585 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 4 remaining) [2023-08-03 19:49:29,586 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-08-03 19:49:29,586 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-08-03 19:49:29,586 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-03 19:49:29,587 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-03 19:49:29,590 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-03 19:49:29,590 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-03 19:49:29,620 INFO L144 ThreadInstanceAdder]: Constructed 18 joinOtherThreadTransitions. [2023-08-03 19:49:29,623 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 141 places, 153 transitions, 396 flow [2023-08-03 19:49:30,007 INFO L124 PetriNetUnfolderBase]: 834/3928 cut-off events. [2023-08-03 19:49:30,007 INFO L125 PetriNetUnfolderBase]: For 602/602 co-relation queries the response was YES. [2023-08-03 19:49:30,027 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4602 conditions, 3928 events. 834/3928 cut-off events. For 602/602 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 31320 event pairs, 11 based on Foata normal form. 0/3338 useless extension candidates. Maximal degree in co-relation 2317. Up to 192 conditions per place. [2023-08-03 19:49:30,027 INFO L82 GeneralOperation]: Start removeDead. Operand has 141 places, 153 transitions, 396 flow [2023-08-03 19:49:30,042 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 131 places, 143 transitions, 376 flow [2023-08-03 19:49:30,042 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 19:49:30,042 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 131 places, 143 transitions, 376 flow [2023-08-03 19:49:30,042 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 131 places, 143 transitions, 376 flow [2023-08-03 19:49:30,043 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 131 places, 143 transitions, 376 flow [2023-08-03 19:49:30,334 INFO L124 PetriNetUnfolderBase]: 834/3288 cut-off events. [2023-08-03 19:49:30,334 INFO L125 PetriNetUnfolderBase]: For 602/602 co-relation queries the response was YES. [2023-08-03 19:49:30,342 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3962 conditions, 3288 events. 834/3288 cut-off events. For 602/602 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 23938 event pairs, 11 based on Foata normal form. 0/2762 useless extension candidates. Maximal degree in co-relation 1997. Up to 192 conditions per place. [2023-08-03 19:49:30,373 INFO L119 LiptonReduction]: Number of co-enabled transitions 3060 [2023-08-03 19:49:32,482 INFO L134 LiptonReduction]: Checked pairs total: 11688 [2023-08-03 19:49:32,482 INFO L136 LiptonReduction]: Total number of compositions: 96 [2023-08-03 19:49:32,484 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-03 19:49:32,485 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=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, 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;@1517dacd, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 19:49:32,485 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-08-03 19:49:32,488 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 19:49:32,488 INFO L124 PetriNetUnfolderBase]: 0/25 cut-off events. [2023-08-03 19:49:32,488 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-03 19:49:32,488 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:49:32,488 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:49:32,489 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 19:49:32,489 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:49:32,489 INFO L85 PathProgramCache]: Analyzing trace with hash -1852719175, now seen corresponding path program 1 times [2023-08-03 19:49:32,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:49:32,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [380419235] [2023-08-03 19:49:32,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:49:32,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:49:32,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:49:32,573 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 19:49:32,573 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:49:32,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [380419235] [2023-08-03 19:49:32,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [380419235] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 19:49:32,574 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 19:49:32,574 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-03 19:49:32,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [562232208] [2023-08-03 19:49:32,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 19:49:32,581 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 19:49:32,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:49:32,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 19:49:32,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 19:49:32,621 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 249 [2023-08-03 19:49:32,623 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 58 transitions, 206 flow. Second operand has 3 states, 3 states have (on average 119.33333333333333) internal successors, (358), 3 states have internal predecessors, (358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:49:32,624 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:49:32,624 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 249 [2023-08-03 19:49:32,624 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:49:35,437 INFO L124 PetriNetUnfolderBase]: 19931/29965 cut-off events. [2023-08-03 19:49:35,438 INFO L125 PetriNetUnfolderBase]: For 7068/7068 co-relation queries the response was YES. [2023-08-03 19:49:35,484 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62896 conditions, 29965 events. 19931/29965 cut-off events. For 7068/7068 co-relation queries the response was YES. Maximal size of possible extension queue 676. Compared 187917 event pairs, 13302 based on Foata normal form. 0/27397 useless extension candidates. Maximal degree in co-relation 25306. Up to 28006 conditions per place. [2023-08-03 19:49:35,608 INFO L140 encePairwiseOnDemand]: 246/249 looper letters, 50 selfloop transitions, 2 changer transitions 0/61 dead transitions. [2023-08-03 19:49:35,608 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 61 transitions, 316 flow [2023-08-03 19:49:35,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 19:49:35,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 19:49:35,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 404 transitions. [2023-08-03 19:49:35,629 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5408299866131191 [2023-08-03 19:49:35,630 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 404 transitions. [2023-08-03 19:49:35,630 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 404 transitions. [2023-08-03 19:49:35,634 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:49:35,636 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 404 transitions. [2023-08-03 19:49:35,642 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 134.66666666666666) internal successors, (404), 3 states have internal predecessors, (404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:49:35,648 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 249.0) internal successors, (996), 4 states have internal predecessors, (996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:49:35,648 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 249.0) internal successors, (996), 4 states have internal predecessors, (996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:49:35,650 INFO L175 Difference]: Start difference. First operand has 53 places, 58 transitions, 206 flow. Second operand 3 states and 404 transitions. [2023-08-03 19:49:35,651 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 61 transitions, 316 flow [2023-08-03 19:49:35,744 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 61 transitions, 316 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-03 19:49:35,747 INFO L231 Difference]: Finished difference. Result has 56 places, 59 transitions, 218 flow [2023-08-03 19:49:35,749 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=249, PETRI_DIFFERENCE_MINUEND_FLOW=206, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=218, PETRI_PLACES=56, PETRI_TRANSITIONS=59} [2023-08-03 19:49:35,753 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 3 predicate places. [2023-08-03 19:49:35,754 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 59 transitions, 218 flow [2023-08-03 19:49:35,754 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 119.33333333333333) internal successors, (358), 3 states have internal predecessors, (358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:49:35,754 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:49:35,754 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-08-03 19:49:35,755 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-03 19:49:35,756 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 19:49:35,758 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:49:35,758 INFO L85 PathProgramCache]: Analyzing trace with hash 1306992127, now seen corresponding path program 1 times [2023-08-03 19:49:35,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:49:35,762 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [593671713] [2023-08-03 19:49:35,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:49:35,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:49:35,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:49:35,867 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 19:49:35,867 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:49:35,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [593671713] [2023-08-03 19:49:35,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [593671713] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:49:35,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [60345767] [2023-08-03 19:49:35,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:49:35,868 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:49:35,868 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:49:35,877 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 19:49:35,899 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-03 19:49:35,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:49:35,947 INFO L262 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-03 19:49:35,948 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:49:36,005 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 19:49:36,006 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 19:49:36,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [60345767] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 19:49:36,006 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 19:49:36,006 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 5 [2023-08-03 19:49:36,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268448260] [2023-08-03 19:49:36,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 19:49:36,007 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 19:49:36,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:49:36,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 19:49:36,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-03 19:49:36,024 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 116 out of 249 [2023-08-03 19:49:36,025 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 59 transitions, 218 flow. Second operand has 5 states, 5 states have (on average 117.6) internal successors, (588), 5 states have internal predecessors, (588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:49:36,026 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:49:36,026 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 116 of 249 [2023-08-03 19:49:36,026 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:49:38,124 INFO L124 PetriNetUnfolderBase]: 19927/29957 cut-off events. [2023-08-03 19:49:38,124 INFO L125 PetriNetUnfolderBase]: For 7062/7062 co-relation queries the response was YES. [2023-08-03 19:49:38,184 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62893 conditions, 29957 events. 19927/29957 cut-off events. For 7062/7062 co-relation queries the response was YES. Maximal size of possible extension queue 676. Compared 187914 event pairs, 10644 based on Foata normal form. 4/27401 useless extension candidates. Maximal degree in co-relation 38021. Up to 27985 conditions per place. [2023-08-03 19:49:38,297 INFO L140 encePairwiseOnDemand]: 245/249 looper letters, 51 selfloop transitions, 4 changer transitions 0/63 dead transitions. [2023-08-03 19:49:38,297 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 63 transitions, 334 flow [2023-08-03 19:49:38,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-03 19:49:38,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-03 19:49:38,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 636 transitions. [2023-08-03 19:49:38,300 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5108433734939759 [2023-08-03 19:49:38,300 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 636 transitions. [2023-08-03 19:49:38,300 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 636 transitions. [2023-08-03 19:49:38,301 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:49:38,301 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 636 transitions. [2023-08-03 19:49:38,302 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 127.2) internal successors, (636), 5 states have internal predecessors, (636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:49:38,306 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 249.0) internal successors, (1494), 6 states have internal predecessors, (1494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:49:38,306 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 249.0) internal successors, (1494), 6 states have internal predecessors, (1494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:49:38,307 INFO L175 Difference]: Start difference. First operand has 56 places, 59 transitions, 218 flow. Second operand 5 states and 636 transitions. [2023-08-03 19:49:38,307 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 63 transitions, 334 flow [2023-08-03 19:49:38,497 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 63 transitions, 324 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-03 19:49:38,498 INFO L231 Difference]: Finished difference. Result has 58 places, 59 transitions, 223 flow [2023-08-03 19:49:38,498 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=249, PETRI_DIFFERENCE_MINUEND_FLOW=202, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=223, PETRI_PLACES=58, PETRI_TRANSITIONS=59} [2023-08-03 19:49:38,499 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 5 predicate places. [2023-08-03 19:49:38,499 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 59 transitions, 223 flow [2023-08-03 19:49:38,500 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 117.6) internal successors, (588), 5 states have internal predecessors, (588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:49:38,500 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:49:38,500 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:49:38,512 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-03 19:49:38,700 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:49:38,701 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 19:49:38,701 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:49:38,701 INFO L85 PathProgramCache]: Analyzing trace with hash 268959355, now seen corresponding path program 1 times [2023-08-03 19:49:38,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:49:38,702 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [900218490] [2023-08-03 19:49:38,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:49:38,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:49:38,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:49:38,797 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 19:49:38,797 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:49:38,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [900218490] [2023-08-03 19:49:38,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [900218490] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:49:38,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [961310987] [2023-08-03 19:49:38,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:49:38,798 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:49:38,798 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:49:38,800 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 19:49:38,809 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-03 19:49:38,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:49:38,863 INFO L262 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-03 19:49:38,865 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:49:38,874 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-03 19:49:38,874 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 19:49:38,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [961310987] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 19:49:38,874 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 19:49:38,874 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-08-03 19:49:38,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1254976297] [2023-08-03 19:49:38,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 19:49:38,875 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 19:49:38,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:49:38,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 19:49:38,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-03 19:49:38,884 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 249 [2023-08-03 19:49:38,885 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 59 transitions, 223 flow. Second operand has 3 states, 3 states have (on average 120.33333333333333) internal successors, (361), 3 states have internal predecessors, (361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:49:38,885 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:49:38,885 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 249 [2023-08-03 19:49:38,885 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:49:40,815 INFO L124 PetriNetUnfolderBase]: 19713/29593 cut-off events. [2023-08-03 19:49:40,816 INFO L125 PetriNetUnfolderBase]: For 5755/5755 co-relation queries the response was YES. [2023-08-03 19:49:40,850 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61461 conditions, 29593 events. 19713/29593 cut-off events. For 5755/5755 co-relation queries the response was YES. Maximal size of possible extension queue 706. Compared 185589 event pairs, 13225 based on Foata normal form. 0/27105 useless extension candidates. Maximal degree in co-relation 26842. Up to 27624 conditions per place. [2023-08-03 19:49:40,942 INFO L140 encePairwiseOnDemand]: 246/249 looper letters, 53 selfloop transitions, 3 changer transitions 0/64 dead transitions. [2023-08-03 19:49:40,942 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 64 transitions, 345 flow [2023-08-03 19:49:40,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 19:49:40,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 19:49:40,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 406 transitions. [2023-08-03 19:49:40,945 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5435073627844712 [2023-08-03 19:49:40,945 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 406 transitions. [2023-08-03 19:49:40,945 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 406 transitions. [2023-08-03 19:49:40,945 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:49:40,945 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 406 transitions. [2023-08-03 19:49:40,946 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 135.33333333333334) internal successors, (406), 3 states have internal predecessors, (406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:49:40,948 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 249.0) internal successors, (996), 4 states have internal predecessors, (996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:49:40,949 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 249.0) internal successors, (996), 4 states have internal predecessors, (996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:49:40,949 INFO L175 Difference]: Start difference. First operand has 58 places, 59 transitions, 223 flow. Second operand 3 states and 406 transitions. [2023-08-03 19:49:40,949 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 64 transitions, 345 flow [2023-08-03 19:49:40,954 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 64 transitions, 338 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-08-03 19:49:40,955 INFO L231 Difference]: Finished difference. Result has 59 places, 60 transitions, 231 flow [2023-08-03 19:49:40,956 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=249, PETRI_DIFFERENCE_MINUEND_FLOW=216, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=231, PETRI_PLACES=59, PETRI_TRANSITIONS=60} [2023-08-03 19:49:40,958 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 6 predicate places. [2023-08-03 19:49:40,958 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 60 transitions, 231 flow [2023-08-03 19:49:40,958 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 120.33333333333333) internal successors, (361), 3 states have internal predecessors, (361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:49:40,958 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:49:40,959 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:49:40,970 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-03 19:49:41,169 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2023-08-03 19:49:41,171 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 19:49:41,171 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:49:41,171 INFO L85 PathProgramCache]: Analyzing trace with hash -1744896494, now seen corresponding path program 1 times [2023-08-03 19:49:41,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:49:41,172 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [726349879] [2023-08-03 19:49:41,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:49:41,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:49:41,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:49:41,246 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-03 19:49:41,247 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:49:41,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [726349879] [2023-08-03 19:49:41,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [726349879] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:49:41,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [75635743] [2023-08-03 19:49:41,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:49:41,247 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:49:41,247 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:49:41,249 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 19:49:41,249 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-03 19:49:41,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:49:41,311 INFO L262 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-03 19:49:41,312 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:49:41,326 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-03 19:49:41,326 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 19:49:41,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [75635743] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 19:49:41,327 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 19:49:41,327 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-08-03 19:49:41,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1355768694] [2023-08-03 19:49:41,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 19:49:41,327 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 19:49:41,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:49:41,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 19:49:41,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-03 19:49:41,337 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 249 [2023-08-03 19:49:41,338 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 60 transitions, 231 flow. Second operand has 3 states, 3 states have (on average 121.33333333333333) internal successors, (364), 3 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:49:41,338 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:49:41,338 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 249 [2023-08-03 19:49:41,338 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:49:43,241 INFO L124 PetriNetUnfolderBase]: 19677/29839 cut-off events. [2023-08-03 19:49:43,242 INFO L125 PetriNetUnfolderBase]: For 4226/4226 co-relation queries the response was YES. [2023-08-03 19:49:43,292 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61755 conditions, 29839 events. 19677/29839 cut-off events. For 4226/4226 co-relation queries the response was YES. Maximal size of possible extension queue 791. Compared 190336 event pairs, 13170 based on Foata normal form. 0/27435 useless extension candidates. Maximal degree in co-relation 26912. Up to 27248 conditions per place. [2023-08-03 19:49:43,384 INFO L140 encePairwiseOnDemand]: 246/249 looper letters, 57 selfloop transitions, 2 changer transitions 0/67 dead transitions. [2023-08-03 19:49:43,385 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 67 transitions, 363 flow [2023-08-03 19:49:43,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 19:49:43,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 19:49:43,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 408 transitions. [2023-08-03 19:49:43,387 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5461847389558233 [2023-08-03 19:49:43,387 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 408 transitions. [2023-08-03 19:49:43,387 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 408 transitions. [2023-08-03 19:49:43,387 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:49:43,387 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 408 transitions. [2023-08-03 19:49:43,388 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 136.0) internal successors, (408), 3 states have internal predecessors, (408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:49:43,390 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 249.0) internal successors, (996), 4 states have internal predecessors, (996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:49:43,390 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 249.0) internal successors, (996), 4 states have internal predecessors, (996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:49:43,391 INFO L175 Difference]: Start difference. First operand has 59 places, 60 transitions, 231 flow. Second operand 3 states and 408 transitions. [2023-08-03 19:49:43,391 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 67 transitions, 363 flow [2023-08-03 19:49:43,395 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 67 transitions, 360 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 19:49:43,396 INFO L231 Difference]: Finished difference. Result has 61 places, 61 transitions, 240 flow [2023-08-03 19:49:43,397 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=249, PETRI_DIFFERENCE_MINUEND_FLOW=228, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=240, PETRI_PLACES=61, PETRI_TRANSITIONS=61} [2023-08-03 19:49:43,397 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 8 predicate places. [2023-08-03 19:49:43,397 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 61 transitions, 240 flow [2023-08-03 19:49:43,398 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 121.33333333333333) internal successors, (364), 3 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:49:43,398 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:49:43,398 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:49:43,407 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-08-03 19:49:43,602 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:49:43,603 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 19:49:43,603 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:49:43,603 INFO L85 PathProgramCache]: Analyzing trace with hash -2049132989, now seen corresponding path program 1 times [2023-08-03 19:49:43,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:49:43,604 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1254845752] [2023-08-03 19:49:43,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:49:43,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:49:43,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:49:43,682 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-03 19:49:43,682 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:49:43,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1254845752] [2023-08-03 19:49:43,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1254845752] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:49:43,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1469199700] [2023-08-03 19:49:43,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:49:43,683 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:49:43,683 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:49:43,685 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 19:49:43,687 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-03 19:49:43,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:49:43,749 INFO L262 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-03 19:49:43,750 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:49:43,773 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-03 19:49:43,773 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 19:49:43,794 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-03 19:49:43,795 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1469199700] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 19:49:43,795 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 19:49:43,795 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 4 [2023-08-03 19:49:43,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315011611] [2023-08-03 19:49:43,795 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 19:49:43,796 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 19:49:43,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:49:43,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 19:49:43,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-03 19:49:43,810 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 116 out of 249 [2023-08-03 19:49:43,811 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 61 transitions, 240 flow. Second operand has 5 states, 5 states have (on average 118.6) internal successors, (593), 5 states have internal predecessors, (593), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:49:43,811 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:49:43,811 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 116 of 249 [2023-08-03 19:49:43,812 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:49:45,786 INFO L124 PetriNetUnfolderBase]: 19097/28909 cut-off events. [2023-08-03 19:49:45,786 INFO L125 PetriNetUnfolderBase]: For 4369/4369 co-relation queries the response was YES. [2023-08-03 19:49:45,837 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60116 conditions, 28909 events. 19097/28909 cut-off events. For 4369/4369 co-relation queries the response was YES. Maximal size of possible extension queue 809. Compared 182964 event pairs, 10459 based on Foata normal form. 2/26723 useless extension candidates. Maximal degree in co-relation 23254. Up to 26756 conditions per place. [2023-08-03 19:49:45,911 INFO L140 encePairwiseOnDemand]: 246/249 looper letters, 53 selfloop transitions, 3 changer transitions 0/64 dead transitions. [2023-08-03 19:49:45,911 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 64 transitions, 354 flow [2023-08-03 19:49:45,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 19:49:45,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 19:49:45,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 519 transitions. [2023-08-03 19:49:45,913 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5210843373493976 [2023-08-03 19:49:45,913 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 519 transitions. [2023-08-03 19:49:45,913 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 519 transitions. [2023-08-03 19:49:45,914 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:49:45,914 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 519 transitions. [2023-08-03 19:49:45,915 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 129.75) internal successors, (519), 4 states have internal predecessors, (519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:49:45,917 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 249.0) internal successors, (1245), 5 states have internal predecessors, (1245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:49:45,917 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 249.0) internal successors, (1245), 5 states have internal predecessors, (1245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:49:45,917 INFO L175 Difference]: Start difference. First operand has 61 places, 61 transitions, 240 flow. Second operand 4 states and 519 transitions. [2023-08-03 19:49:45,917 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 64 transitions, 354 flow [2023-08-03 19:49:45,922 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 64 transitions, 352 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 19:49:45,924 INFO L231 Difference]: Finished difference. Result has 63 places, 60 transitions, 236 flow [2023-08-03 19:49:45,924 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=249, PETRI_DIFFERENCE_MINUEND_FLOW=230, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=236, PETRI_PLACES=63, PETRI_TRANSITIONS=60} [2023-08-03 19:49:45,924 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 10 predicate places. [2023-08-03 19:49:45,925 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 60 transitions, 236 flow [2023-08-03 19:49:45,925 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 118.6) internal successors, (593), 5 states have internal predecessors, (593), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:49:45,925 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:49:45,925 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:49:45,933 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-08-03 19:49:46,133 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:49:46,133 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 19:49:46,133 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:49:46,133 INFO L85 PathProgramCache]: Analyzing trace with hash -1223574688, now seen corresponding path program 1 times [2023-08-03 19:49:46,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:49:46,133 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1650353045] [2023-08-03 19:49:46,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:49:46,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:49:46,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:49:46,228 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-03 19:49:46,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:49:46,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1650353045] [2023-08-03 19:49:46,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1650353045] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:49:46,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2067690698] [2023-08-03 19:49:46,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:49:46,229 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:49:46,229 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:49:46,230 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 19:49:46,232 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-03 19:49:46,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:49:46,297 INFO L262 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-03 19:49:46,298 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:49:46,323 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-03 19:49:46,324 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 19:49:46,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2067690698] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 19:49:46,325 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 19:49:46,325 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 6 [2023-08-03 19:49:46,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103583330] [2023-08-03 19:49:46,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 19:49:46,325 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 19:49:46,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:49:46,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 19:49:46,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-03 19:49:46,340 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 116 out of 249 [2023-08-03 19:49:46,342 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 60 transitions, 236 flow. Second operand has 5 states, 5 states have (on average 118.6) internal successors, (593), 5 states have internal predecessors, (593), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:49:46,342 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:49:46,342 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 116 of 249 [2023-08-03 19:49:46,342 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:49:48,123 INFO L124 PetriNetUnfolderBase]: 19065/28853 cut-off events. [2023-08-03 19:49:48,123 INFO L125 PetriNetUnfolderBase]: For 4289/4289 co-relation queries the response was YES. [2023-08-03 19:49:48,195 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59955 conditions, 28853 events. 19065/28853 cut-off events. For 4289/4289 co-relation queries the response was YES. Maximal size of possible extension queue 809. Compared 182611 event pairs, 5351 based on Foata normal form. 16/26681 useless extension candidates. Maximal degree in co-relation 36723. Up to 26587 conditions per place. [2023-08-03 19:49:48,458 INFO L140 encePairwiseOnDemand]: 245/249 looper letters, 59 selfloop transitions, 4 changer transitions 0/70 dead transitions. [2023-08-03 19:49:48,458 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 70 transitions, 382 flow [2023-08-03 19:49:48,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-03 19:49:48,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-03 19:49:48,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 642 transitions. [2023-08-03 19:49:48,460 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5156626506024097 [2023-08-03 19:49:48,460 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 642 transitions. [2023-08-03 19:49:48,460 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 642 transitions. [2023-08-03 19:49:48,460 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:49:48,460 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 642 transitions. [2023-08-03 19:49:48,462 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 128.4) internal successors, (642), 5 states have internal predecessors, (642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:49:48,463 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 249.0) internal successors, (1494), 6 states have internal predecessors, (1494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:49:48,464 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 249.0) internal successors, (1494), 6 states have internal predecessors, (1494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:49:48,464 INFO L175 Difference]: Start difference. First operand has 63 places, 60 transitions, 236 flow. Second operand 5 states and 642 transitions. [2023-08-03 19:49:48,464 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 70 transitions, 382 flow [2023-08-03 19:49:48,468 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 70 transitions, 368 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-08-03 19:49:48,469 INFO L231 Difference]: Finished difference. Result has 63 places, 60 transitions, 239 flow [2023-08-03 19:49:48,469 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=249, PETRI_DIFFERENCE_MINUEND_FLOW=216, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=239, PETRI_PLACES=63, PETRI_TRANSITIONS=60} [2023-08-03 19:49:48,470 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 10 predicate places. [2023-08-03 19:49:48,470 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 60 transitions, 239 flow [2023-08-03 19:49:48,470 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 118.6) internal successors, (593), 5 states have internal predecessors, (593), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:49:48,470 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:49:48,470 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:49:48,477 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-08-03 19:49:48,677 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:49:48,677 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 19:49:48,677 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:49:48,677 INFO L85 PathProgramCache]: Analyzing trace with hash 741852157, now seen corresponding path program 1 times [2023-08-03 19:49:48,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:49:48,678 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1295269228] [2023-08-03 19:49:48,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:49:48,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:49:48,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:49:48,738 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-08-03 19:49:48,738 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:49:48,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1295269228] [2023-08-03 19:49:48,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1295269228] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:49:48,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1757302515] [2023-08-03 19:49:48,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:49:48,739 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:49:48,739 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:49:48,740 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 19:49:48,742 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-08-03 19:49:48,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:49:48,804 INFO L262 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-03 19:49:48,805 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:49:48,814 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-03 19:49:48,814 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 19:49:48,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1757302515] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 19:49:48,814 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 19:49:48,814 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2023-08-03 19:49:48,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [362321434] [2023-08-03 19:49:48,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 19:49:48,815 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 19:49:48,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:49:48,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 19:49:48,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-03 19:49:48,824 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 249 [2023-08-03 19:49:48,824 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 60 transitions, 239 flow. Second operand has 3 states, 3 states have (on average 122.66666666666667) internal successors, (368), 3 states have internal predecessors, (368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:49:48,825 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:49:48,825 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 249 [2023-08-03 19:49:48,825 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:49:50,334 INFO L124 PetriNetUnfolderBase]: 17593/26805 cut-off events. [2023-08-03 19:49:50,334 INFO L125 PetriNetUnfolderBase]: For 3446/3446 co-relation queries the response was YES. [2023-08-03 19:49:50,389 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55292 conditions, 26805 events. 17593/26805 cut-off events. For 3446/3446 co-relation queries the response was YES. Maximal size of possible extension queue 854. Compared 170489 event pairs, 12582 based on Foata normal form. 0/24809 useless extension candidates. Maximal degree in co-relation 34289. Up to 22628 conditions per place. [2023-08-03 19:49:50,635 INFO L140 encePairwiseOnDemand]: 246/249 looper letters, 65 selfloop transitions, 2 changer transitions 0/74 dead transitions. [2023-08-03 19:49:50,635 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 74 transitions, 415 flow [2023-08-03 19:49:50,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 19:49:50,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 19:49:50,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 415 transitions. [2023-08-03 19:49:50,637 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5555555555555556 [2023-08-03 19:49:50,637 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 415 transitions. [2023-08-03 19:49:50,637 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 415 transitions. [2023-08-03 19:49:50,638 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:49:50,638 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 415 transitions. [2023-08-03 19:49:50,638 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 138.33333333333334) internal successors, (415), 3 states have internal predecessors, (415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:49:50,639 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 249.0) internal successors, (996), 4 states have internal predecessors, (996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:49:50,640 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 249.0) internal successors, (996), 4 states have internal predecessors, (996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:49:50,640 INFO L175 Difference]: Start difference. First operand has 63 places, 60 transitions, 239 flow. Second operand 3 states and 415 transitions. [2023-08-03 19:49:50,640 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 74 transitions, 415 flow [2023-08-03 19:49:50,643 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 74 transitions, 408 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-08-03 19:49:50,644 INFO L231 Difference]: Finished difference. Result has 64 places, 61 transitions, 244 flow [2023-08-03 19:49:50,644 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=249, PETRI_DIFFERENCE_MINUEND_FLOW=232, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=244, PETRI_PLACES=64, PETRI_TRANSITIONS=61} [2023-08-03 19:49:50,645 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 11 predicate places. [2023-08-03 19:49:50,645 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 61 transitions, 244 flow [2023-08-03 19:49:50,645 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 122.66666666666667) internal successors, (368), 3 states have internal predecessors, (368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:49:50,645 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:49:50,645 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:49:50,650 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-08-03 19:49:50,848 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:49:50,848 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 19:49:50,849 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:49:50,849 INFO L85 PathProgramCache]: Analyzing trace with hash 914898163, now seen corresponding path program 1 times [2023-08-03 19:49:50,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:49:50,849 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [49613618] [2023-08-03 19:49:50,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:49:50,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:49:50,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:49:50,914 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-08-03 19:49:50,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:49:50,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [49613618] [2023-08-03 19:49:50,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [49613618] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:49:50,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1337651584] [2023-08-03 19:49:50,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:49:50,915 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:49:50,915 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:49:50,916 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 19:49:50,942 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-08-03 19:49:50,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:49:50,995 INFO L262 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-03 19:49:50,996 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:49:51,006 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-08-03 19:49:51,006 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 19:49:51,022 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-08-03 19:49:51,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1337651584] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 19:49:51,022 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 19:49:51,023 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 5 [2023-08-03 19:49:51,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608460199] [2023-08-03 19:49:51,025 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 19:49:51,025 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 19:49:51,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:49:51,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 19:49:51,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-03 19:49:51,037 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 116 out of 249 [2023-08-03 19:49:51,037 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 61 transitions, 244 flow. Second operand has 5 states, 5 states have (on average 119.6) internal successors, (598), 5 states have internal predecessors, (598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:49:51,037 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:49:51,038 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 116 of 249 [2023-08-03 19:49:51,038 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:49:52,957 INFO L124 PetriNetUnfolderBase]: 16745/25469 cut-off events. [2023-08-03 19:49:52,958 INFO L125 PetriNetUnfolderBase]: For 4239/4239 co-relation queries the response was YES. [2023-08-03 19:49:52,989 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54203 conditions, 25469 events. 16745/25469 cut-off events. For 4239/4239 co-relation queries the response was YES. Maximal size of possible extension queue 836. Compared 159486 event pairs, 9446 based on Foata normal form. 8/24146 useless extension candidates. Maximal degree in co-relation 34067. Up to 23572 conditions per place. [2023-08-03 19:49:53,036 INFO L140 encePairwiseOnDemand]: 246/249 looper letters, 58 selfloop transitions, 3 changer transitions 0/68 dead transitions. [2023-08-03 19:49:53,037 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 68 transitions, 376 flow [2023-08-03 19:49:53,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 19:49:53,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 19:49:53,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 523 transitions. [2023-08-03 19:49:53,038 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5251004016064257 [2023-08-03 19:49:53,039 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 523 transitions. [2023-08-03 19:49:53,039 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 523 transitions. [2023-08-03 19:49:53,039 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:49:53,039 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 523 transitions. [2023-08-03 19:49:53,040 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 130.75) internal successors, (523), 4 states have internal predecessors, (523), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:49:53,042 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 249.0) internal successors, (1245), 5 states have internal predecessors, (1245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:49:53,042 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 249.0) internal successors, (1245), 5 states have internal predecessors, (1245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:49:53,042 INFO L175 Difference]: Start difference. First operand has 64 places, 61 transitions, 244 flow. Second operand 4 states and 523 transitions. [2023-08-03 19:49:53,042 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 68 transitions, 376 flow [2023-08-03 19:49:53,048 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 68 transitions, 374 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 19:49:53,049 INFO L231 Difference]: Finished difference. Result has 66 places, 60 transitions, 240 flow [2023-08-03 19:49:53,049 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=249, PETRI_DIFFERENCE_MINUEND_FLOW=234, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=240, PETRI_PLACES=66, PETRI_TRANSITIONS=60} [2023-08-03 19:49:53,050 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 13 predicate places. [2023-08-03 19:49:53,050 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 60 transitions, 240 flow [2023-08-03 19:49:53,050 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 119.6) internal successors, (598), 5 states have internal predecessors, (598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:49:53,050 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:49:53,050 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:49:53,057 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-08-03 19:49:53,255 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:49:53,255 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 19:49:53,256 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:49:53,256 INFO L85 PathProgramCache]: Analyzing trace with hash -1172341783, now seen corresponding path program 1 times [2023-08-03 19:49:53,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:49:53,256 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1987350684] [2023-08-03 19:49:53,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:49:53,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:49:53,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:49:53,322 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-08-03 19:49:53,322 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:49:53,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1987350684] [2023-08-03 19:49:53,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1987350684] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:49:53,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [409674876] [2023-08-03 19:49:53,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:49:53,323 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:49:53,323 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:49:53,324 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 19:49:53,328 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-08-03 19:49:53,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:49:53,399 INFO L262 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-03 19:49:53,403 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:49:53,422 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-08-03 19:49:53,422 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 19:49:53,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [409674876] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 19:49:53,425 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 19:49:53,425 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 6 [2023-08-03 19:49:53,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1156461136] [2023-08-03 19:49:53,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 19:49:53,426 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 19:49:53,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:49:53,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 19:49:53,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-03 19:49:53,442 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 116 out of 249 [2023-08-03 19:49:53,443 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 60 transitions, 240 flow. Second operand has 5 states, 5 states have (on average 119.6) internal successors, (598), 5 states have internal predecessors, (598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:49:53,443 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:49:53,443 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 116 of 249 [2023-08-03 19:49:53,443 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:49:54,881 INFO L124 PetriNetUnfolderBase]: 16553/25181 cut-off events. [2023-08-03 19:49:54,881 INFO L125 PetriNetUnfolderBase]: For 3835/3835 co-relation queries the response was YES. [2023-08-03 19:49:54,950 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53351 conditions, 25181 events. 16553/25181 cut-off events. For 3835/3835 co-relation queries the response was YES. Maximal size of possible extension queue 836. Compared 157705 event pairs, 766 based on Foata normal form. 64/23914 useless extension candidates. Maximal degree in co-relation 33649. Up to 22603 conditions per place. [2023-08-03 19:49:55,184 INFO L140 encePairwiseOnDemand]: 245/249 looper letters, 66 selfloop transitions, 4 changer transitions 0/76 dead transitions. [2023-08-03 19:49:55,185 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 76 transitions, 412 flow [2023-08-03 19:49:55,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-03 19:49:55,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-03 19:49:55,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 648 transitions. [2023-08-03 19:49:55,191 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5204819277108433 [2023-08-03 19:49:55,191 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 648 transitions. [2023-08-03 19:49:55,191 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 648 transitions. [2023-08-03 19:49:55,191 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:49:55,191 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 648 transitions. [2023-08-03 19:49:55,193 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 129.6) internal successors, (648), 5 states have internal predecessors, (648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:49:55,194 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 249.0) internal successors, (1494), 6 states have internal predecessors, (1494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:49:55,195 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 249.0) internal successors, (1494), 6 states have internal predecessors, (1494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:49:55,195 INFO L175 Difference]: Start difference. First operand has 66 places, 60 transitions, 240 flow. Second operand 5 states and 648 transitions. [2023-08-03 19:49:55,195 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 76 transitions, 412 flow [2023-08-03 19:49:55,203 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 76 transitions, 398 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-08-03 19:49:55,205 INFO L231 Difference]: Finished difference. Result has 66 places, 60 transitions, 243 flow [2023-08-03 19:49:55,205 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=249, PETRI_DIFFERENCE_MINUEND_FLOW=220, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=243, PETRI_PLACES=66, PETRI_TRANSITIONS=60} [2023-08-03 19:49:55,206 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 13 predicate places. [2023-08-03 19:49:55,206 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 60 transitions, 243 flow [2023-08-03 19:49:55,207 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 119.6) internal successors, (598), 5 states have internal predecessors, (598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:49:55,207 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:49:55,207 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:49:55,215 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-08-03 19:49:55,415 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-08-03 19:49:55,415 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 19:49:55,416 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:49:55,416 INFO L85 PathProgramCache]: Analyzing trace with hash -1411328884, now seen corresponding path program 1 times [2023-08-03 19:49:55,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:49:55,416 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [124576545] [2023-08-03 19:49:55,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:49:55,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:49:55,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:49:55,485 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-08-03 19:49:55,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:49:55,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [124576545] [2023-08-03 19:49:55,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [124576545] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:49:55,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [529399108] [2023-08-03 19:49:55,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:49:55,486 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:49:55,486 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:49:55,487 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 19:49:55,515 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-08-03 19:49:55,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:49:55,573 INFO L262 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-03 19:49:55,574 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:49:55,580 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-08-03 19:49:55,580 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 19:49:55,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [529399108] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 19:49:55,580 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 19:49:55,580 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2023-08-03 19:49:55,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1057880215] [2023-08-03 19:49:55,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 19:49:55,582 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 19:49:55,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:49:55,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 19:49:55,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-03 19:49:55,590 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 249 [2023-08-03 19:49:55,590 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 60 transitions, 243 flow. Second operand has 3 states, 3 states have (on average 124.33333333333333) internal successors, (373), 3 states have internal predecessors, (373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:49:55,590 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:49:55,591 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 249 [2023-08-03 19:49:55,591 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:49:57,305 INFO L124 PetriNetUnfolderBase]: 16344/25328 cut-off events. [2023-08-03 19:49:57,305 INFO L125 PetriNetUnfolderBase]: For 4135/4135 co-relation queries the response was YES. [2023-08-03 19:49:57,366 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53433 conditions, 25328 events. 16344/25328 cut-off events. For 4135/4135 co-relation queries the response was YES. Maximal size of possible extension queue 758. Compared 163786 event pairs, 10450 based on Foata normal form. 0/24381 useless extension candidates. Maximal degree in co-relation 34552. Up to 17668 conditions per place. [2023-08-03 19:49:57,435 INFO L140 encePairwiseOnDemand]: 246/249 looper letters, 66 selfloop transitions, 2 changer transitions 0/74 dead transitions. [2023-08-03 19:49:57,435 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 74 transitions, 419 flow [2023-08-03 19:49:57,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 19:49:57,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 19:49:57,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 415 transitions. [2023-08-03 19:49:57,437 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5555555555555556 [2023-08-03 19:49:57,437 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 415 transitions. [2023-08-03 19:49:57,437 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 415 transitions. [2023-08-03 19:49:57,437 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:49:57,437 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 415 transitions. [2023-08-03 19:49:57,438 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 138.33333333333334) internal successors, (415), 3 states have internal predecessors, (415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:49:57,439 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 249.0) internal successors, (996), 4 states have internal predecessors, (996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:49:57,439 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 249.0) internal successors, (996), 4 states have internal predecessors, (996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:49:57,439 INFO L175 Difference]: Start difference. First operand has 66 places, 60 transitions, 243 flow. Second operand 3 states and 415 transitions. [2023-08-03 19:49:57,440 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 74 transitions, 419 flow [2023-08-03 19:49:57,446 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 74 transitions, 412 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-08-03 19:49:57,447 INFO L231 Difference]: Finished difference. Result has 67 places, 61 transitions, 248 flow [2023-08-03 19:49:57,448 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=249, PETRI_DIFFERENCE_MINUEND_FLOW=236, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=248, PETRI_PLACES=67, PETRI_TRANSITIONS=61} [2023-08-03 19:49:57,448 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 14 predicate places. [2023-08-03 19:49:57,448 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 61 transitions, 248 flow [2023-08-03 19:49:57,449 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 124.33333333333333) internal successors, (373), 3 states have internal predecessors, (373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:49:57,449 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:49:57,449 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:49:57,460 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-08-03 19:49:57,661 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:49:57,661 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 19:49:57,661 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:49:57,661 INFO L85 PathProgramCache]: Analyzing trace with hash -877575977, now seen corresponding path program 1 times [2023-08-03 19:49:57,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:49:57,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [782694666] [2023-08-03 19:49:57,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:49:57,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:49:57,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:49:57,722 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-08-03 19:49:57,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:49:57,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [782694666] [2023-08-03 19:49:57,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [782694666] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:49:57,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [540351275] [2023-08-03 19:49:57,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:49:57,723 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:49:57,723 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:49:57,724 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 19:49:57,741 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-08-03 19:49:57,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:49:57,815 INFO L262 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-03 19:49:57,816 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:49:57,825 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-08-03 19:49:57,826 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 19:49:57,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [540351275] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 19:49:57,826 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 19:49:57,826 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2023-08-03 19:49:57,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1228941782] [2023-08-03 19:49:57,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 19:49:57,827 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 19:49:57,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:49:57,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 19:49:57,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-03 19:49:57,836 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 249 [2023-08-03 19:49:57,837 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 61 transitions, 248 flow. Second operand has 3 states, 3 states have (on average 125.66666666666667) internal successors, (377), 3 states have internal predecessors, (377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:49:57,837 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:49:57,837 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 249 [2023-08-03 19:49:57,837 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:49:59,500 INFO L124 PetriNetUnfolderBase]: 16615/25971 cut-off events. [2023-08-03 19:49:59,500 INFO L125 PetriNetUnfolderBase]: For 5291/5291 co-relation queries the response was YES. [2023-08-03 19:49:59,556 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57005 conditions, 25971 events. 16615/25971 cut-off events. For 5291/5291 co-relation queries the response was YES. Maximal size of possible extension queue 728. Compared 169730 event pairs, 12321 based on Foata normal form. 0/25737 useless extension candidates. Maximal degree in co-relation 37425. Up to 20542 conditions per place. [2023-08-03 19:49:59,607 INFO L140 encePairwiseOnDemand]: 246/249 looper letters, 67 selfloop transitions, 2 changer transitions 0/75 dead transitions. [2023-08-03 19:49:59,607 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 75 transitions, 426 flow [2023-08-03 19:49:59,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 19:49:59,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 19:49:59,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 415 transitions. [2023-08-03 19:49:59,608 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5555555555555556 [2023-08-03 19:49:59,609 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 415 transitions. [2023-08-03 19:49:59,609 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 415 transitions. [2023-08-03 19:49:59,609 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:49:59,609 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 415 transitions. [2023-08-03 19:49:59,610 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 138.33333333333334) internal successors, (415), 3 states have internal predecessors, (415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:49:59,611 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 249.0) internal successors, (996), 4 states have internal predecessors, (996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:49:59,611 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 249.0) internal successors, (996), 4 states have internal predecessors, (996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:49:59,611 INFO L175 Difference]: Start difference. First operand has 67 places, 61 transitions, 248 flow. Second operand 3 states and 415 transitions. [2023-08-03 19:49:59,612 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 75 transitions, 426 flow [2023-08-03 19:49:59,771 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 75 transitions, 424 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 19:49:59,772 INFO L231 Difference]: Finished difference. Result has 69 places, 62 transitions, 258 flow [2023-08-03 19:49:59,772 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=249, PETRI_DIFFERENCE_MINUEND_FLOW=246, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=258, PETRI_PLACES=69, PETRI_TRANSITIONS=62} [2023-08-03 19:49:59,773 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 16 predicate places. [2023-08-03 19:49:59,773 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 62 transitions, 258 flow [2023-08-03 19:49:59,773 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 125.66666666666667) internal successors, (377), 3 states have internal predecessors, (377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:49:59,773 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:49:59,774 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:49:59,781 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-08-03 19:49:59,978 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-08-03 19:49:59,979 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 19:49:59,979 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:49:59,979 INFO L85 PathProgramCache]: Analyzing trace with hash 1590600502, now seen corresponding path program 1 times [2023-08-03 19:49:59,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:49:59,979 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1326525451] [2023-08-03 19:49:59,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:49:59,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:50:00,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:50:00,060 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-08-03 19:50:00,060 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:50:00,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1326525451] [2023-08-03 19:50:00,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1326525451] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:50:00,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1064063763] [2023-08-03 19:50:00,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:50:00,061 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:50:00,061 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:50:00,062 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 19:50:00,065 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-08-03 19:50:00,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:50:00,147 INFO L262 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-03 19:50:00,154 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:50:00,169 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-08-03 19:50:00,169 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 19:50:00,183 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-08-03 19:50:00,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1064063763] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 19:50:00,184 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 19:50:00,184 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 5 [2023-08-03 19:50:00,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [852118888] [2023-08-03 19:50:00,185 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 19:50:00,186 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 19:50:00,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:50:00,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 19:50:00,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-03 19:50:00,199 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 116 out of 249 [2023-08-03 19:50:00,200 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 62 transitions, 258 flow. Second operand has 5 states, 5 states have (on average 122.8) internal successors, (614), 5 states have internal predecessors, (614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:50:00,200 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:50:00,200 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 116 of 249 [2023-08-03 19:50:00,200 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:50:01,993 INFO L124 PetriNetUnfolderBase]: 16215/25347 cut-off events. [2023-08-03 19:50:01,993 INFO L125 PetriNetUnfolderBase]: For 5005/5005 co-relation queries the response was YES. [2023-08-03 19:50:02,029 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56386 conditions, 25347 events. 16215/25347 cut-off events. For 5005/5005 co-relation queries the response was YES. Maximal size of possible extension queue 702. Compared 164061 event pairs, 9491 based on Foata normal form. 32/25378 useless extension candidates. Maximal degree in co-relation 42454. Up to 22968 conditions per place. [2023-08-03 19:50:02,078 INFO L140 encePairwiseOnDemand]: 246/249 looper letters, 64 selfloop transitions, 3 changer transitions 0/73 dead transitions. [2023-08-03 19:50:02,078 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 73 transitions, 410 flow [2023-08-03 19:50:02,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 19:50:02,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 19:50:02,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 527 transitions. [2023-08-03 19:50:02,079 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5291164658634538 [2023-08-03 19:50:02,079 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 527 transitions. [2023-08-03 19:50:02,079 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 527 transitions. [2023-08-03 19:50:02,080 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:50:02,080 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 527 transitions. [2023-08-03 19:50:02,081 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 131.75) internal successors, (527), 4 states have internal predecessors, (527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:50:02,082 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 249.0) internal successors, (1245), 5 states have internal predecessors, (1245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:50:02,082 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 249.0) internal successors, (1245), 5 states have internal predecessors, (1245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:50:02,082 INFO L175 Difference]: Start difference. First operand has 69 places, 62 transitions, 258 flow. Second operand 4 states and 527 transitions. [2023-08-03 19:50:02,082 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 73 transitions, 410 flow [2023-08-03 19:50:02,291 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 73 transitions, 408 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 19:50:02,293 INFO L231 Difference]: Finished difference. Result has 71 places, 61 transitions, 254 flow [2023-08-03 19:50:02,293 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=249, PETRI_DIFFERENCE_MINUEND_FLOW=248, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=254, PETRI_PLACES=71, PETRI_TRANSITIONS=61} [2023-08-03 19:50:02,293 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 18 predicate places. [2023-08-03 19:50:02,293 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 61 transitions, 254 flow [2023-08-03 19:50:02,294 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 122.8) internal successors, (614), 5 states have internal predecessors, (614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:50:02,294 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:50:02,294 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:50:02,299 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-08-03 19:50:02,494 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-08-03 19:50:02,495 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 19:50:02,495 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:50:02,495 INFO L85 PathProgramCache]: Analyzing trace with hash -1360894689, now seen corresponding path program 1 times [2023-08-03 19:50:02,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:50:02,495 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1362073739] [2023-08-03 19:50:02,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:50:02,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:50:02,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:50:02,554 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-08-03 19:50:02,555 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:50:02,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1362073739] [2023-08-03 19:50:02,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1362073739] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:50:02,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2064323380] [2023-08-03 19:50:02,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:50:02,555 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:50:02,555 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:50:02,557 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 19:50:02,582 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-08-03 19:50:02,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:50:02,651 INFO L262 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-03 19:50:02,652 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:50:02,669 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-08-03 19:50:02,670 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 19:50:02,683 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-08-03 19:50:02,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2064323380] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 19:50:02,684 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 19:50:02,684 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 5 [2023-08-03 19:50:02,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819496907] [2023-08-03 19:50:02,684 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 19:50:02,684 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 19:50:02,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:50:02,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 19:50:02,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-03 19:50:02,698 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 116 out of 249 [2023-08-03 19:50:02,699 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 61 transitions, 254 flow. Second operand has 5 states, 5 states have (on average 123.0) internal successors, (615), 5 states have internal predecessors, (615), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:50:02,699 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:50:02,699 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 116 of 249 [2023-08-03 19:50:02,699 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:50:04,301 INFO L124 PetriNetUnfolderBase]: 10315/16383 cut-off events. [2023-08-03 19:50:04,301 INFO L125 PetriNetUnfolderBase]: For 3568/3568 co-relation queries the response was YES. [2023-08-03 19:50:04,323 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36473 conditions, 16383 events. 10315/16383 cut-off events. For 3568/3568 co-relation queries the response was YES. Maximal size of possible extension queue 465. Compared 98873 event pairs, 5374 based on Foata normal form. 192/16574 useless extension candidates. Maximal degree in co-relation 31654. Up to 9425 conditions per place. [2023-08-03 19:50:04,354 INFO L140 encePairwiseOnDemand]: 245/249 looper letters, 71 selfloop transitions, 4 changer transitions 0/81 dead transitions. [2023-08-03 19:50:04,354 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 81 transitions, 456 flow [2023-08-03 19:50:04,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 19:50:04,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 19:50:04,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 535 transitions. [2023-08-03 19:50:04,356 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5371485943775101 [2023-08-03 19:50:04,356 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 535 transitions. [2023-08-03 19:50:04,356 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 535 transitions. [2023-08-03 19:50:04,356 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:50:04,356 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 535 transitions. [2023-08-03 19:50:04,357 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 133.75) internal successors, (535), 4 states have internal predecessors, (535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:50:04,359 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 249.0) internal successors, (1245), 5 states have internal predecessors, (1245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:50:04,359 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 249.0) internal successors, (1245), 5 states have internal predecessors, (1245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:50:04,359 INFO L175 Difference]: Start difference. First operand has 71 places, 61 transitions, 254 flow. Second operand 4 states and 535 transitions. [2023-08-03 19:50:04,359 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 81 transitions, 456 flow [2023-08-03 19:50:04,428 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 81 transitions, 450 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-03 19:50:04,429 INFO L231 Difference]: Finished difference. Result has 73 places, 62 transitions, 268 flow [2023-08-03 19:50:04,429 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=249, PETRI_DIFFERENCE_MINUEND_FLOW=248, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=268, PETRI_PLACES=73, PETRI_TRANSITIONS=62} [2023-08-03 19:50:04,430 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 20 predicate places. [2023-08-03 19:50:04,430 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 62 transitions, 268 flow [2023-08-03 19:50:04,430 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 123.0) internal successors, (615), 5 states have internal predecessors, (615), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:50:04,430 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:50:04,430 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:50:04,435 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-08-03 19:50:04,632 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-08-03 19:50:04,633 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 19:50:04,633 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:50:04,633 INFO L85 PathProgramCache]: Analyzing trace with hash -928810202, now seen corresponding path program 1 times [2023-08-03 19:50:04,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:50:04,633 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1540351674] [2023-08-03 19:50:04,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:50:04,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:50:04,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:50:04,696 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-08-03 19:50:04,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:50:04,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1540351674] [2023-08-03 19:50:04,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1540351674] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:50:04,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [704137308] [2023-08-03 19:50:04,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:50:04,697 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:50:04,697 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:50:04,699 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 19:50:04,726 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-08-03 19:50:04,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:50:04,793 INFO L262 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-03 19:50:04,794 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:50:04,810 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-08-03 19:50:04,811 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 19:50:04,828 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-08-03 19:50:04,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [704137308] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 19:50:04,829 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 19:50:04,829 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 5 [2023-08-03 19:50:04,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [849193624] [2023-08-03 19:50:04,829 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 19:50:04,829 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 19:50:04,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:50:04,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 19:50:04,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-03 19:50:04,842 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 116 out of 249 [2023-08-03 19:50:04,843 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 62 transitions, 268 flow. Second operand has 5 states, 5 states have (on average 123.4) internal successors, (617), 5 states have internal predecessors, (617), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:50:04,843 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:50:04,843 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 116 of 249 [2023-08-03 19:50:04,843 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:50:06,030 INFO L124 PetriNetUnfolderBase]: 9415/14912 cut-off events. [2023-08-03 19:50:06,030 INFO L125 PetriNetUnfolderBase]: For 6527/6527 co-relation queries the response was YES. [2023-08-03 19:50:06,061 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35831 conditions, 14912 events. 9415/14912 cut-off events. For 6527/6527 co-relation queries the response was YES. Maximal size of possible extension queue 409. Compared 87960 event pairs, 5942 based on Foata normal form. 233/15144 useless extension candidates. Maximal degree in co-relation 34761. Up to 8732 conditions per place. [2023-08-03 19:50:06,092 INFO L140 encePairwiseOnDemand]: 245/249 looper letters, 72 selfloop transitions, 4 changer transitions 0/82 dead transitions. [2023-08-03 19:50:06,093 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 82 transitions, 472 flow [2023-08-03 19:50:06,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 19:50:06,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 19:50:06,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 535 transitions. [2023-08-03 19:50:06,094 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5371485943775101 [2023-08-03 19:50:06,094 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 535 transitions. [2023-08-03 19:50:06,094 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 535 transitions. [2023-08-03 19:50:06,094 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:50:06,094 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 535 transitions. [2023-08-03 19:50:06,095 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 133.75) internal successors, (535), 4 states have internal predecessors, (535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:50:06,096 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 249.0) internal successors, (1245), 5 states have internal predecessors, (1245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:50:06,096 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 249.0) internal successors, (1245), 5 states have internal predecessors, (1245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:50:06,097 INFO L175 Difference]: Start difference. First operand has 73 places, 62 transitions, 268 flow. Second operand 4 states and 535 transitions. [2023-08-03 19:50:06,097 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 82 transitions, 472 flow [2023-08-03 19:50:06,161 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 82 transitions, 468 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-03 19:50:06,162 INFO L231 Difference]: Finished difference. Result has 77 places, 63 transitions, 284 flow [2023-08-03 19:50:06,162 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=249, PETRI_DIFFERENCE_MINUEND_FLOW=264, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=284, PETRI_PLACES=77, PETRI_TRANSITIONS=63} [2023-08-03 19:50:06,163 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 24 predicate places. [2023-08-03 19:50:06,163 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 63 transitions, 284 flow [2023-08-03 19:50:06,163 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 123.4) internal successors, (617), 5 states have internal predecessors, (617), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:50:06,163 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:50:06,163 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:50:06,168 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-08-03 19:50:06,364 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-08-03 19:50:06,364 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 19:50:06,364 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:50:06,365 INFO L85 PathProgramCache]: Analyzing trace with hash -1761622922, now seen corresponding path program 1 times [2023-08-03 19:50:06,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:50:06,365 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [644733351] [2023-08-03 19:50:06,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:50:06,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:50:06,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:50:06,431 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-08-03 19:50:06,432 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:50:06,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [644733351] [2023-08-03 19:50:06,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [644733351] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:50:06,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1313281775] [2023-08-03 19:50:06,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:50:06,432 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:50:06,432 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:50:06,434 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 19:50:06,465 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-08-03 19:50:06,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:50:06,547 INFO L262 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-03 19:50:06,551 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:50:06,561 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-08-03 19:50:06,562 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 19:50:06,576 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-08-03 19:50:06,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1313281775] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 19:50:06,577 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 19:50:06,577 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 4 [2023-08-03 19:50:06,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [781780609] [2023-08-03 19:50:06,577 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 19:50:06,578 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 19:50:06,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:50:06,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 19:50:06,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-03 19:50:06,625 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 116 out of 249 [2023-08-03 19:50:06,625 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 63 transitions, 284 flow. Second operand has 5 states, 5 states have (on average 123.8) internal successors, (619), 5 states have internal predecessors, (619), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:50:06,625 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:50:06,625 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 116 of 249 [2023-08-03 19:50:06,626 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:50:07,648 INFO L124 PetriNetUnfolderBase]: 9409/14895 cut-off events. [2023-08-03 19:50:07,648 INFO L125 PetriNetUnfolderBase]: For 7481/7481 co-relation queries the response was YES. [2023-08-03 19:50:07,672 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37500 conditions, 14895 events. 9409/14895 cut-off events. For 7481/7481 co-relation queries the response was YES. Maximal size of possible extension queue 409. Compared 87825 event pairs, 8414 based on Foata normal form. 13/14907 useless extension candidates. Maximal degree in co-relation 36401. Up to 13453 conditions per place. [2023-08-03 19:50:07,692 INFO L140 encePairwiseOnDemand]: 245/249 looper letters, 71 selfloop transitions, 3 changer transitions 3/83 dead transitions. [2023-08-03 19:50:07,692 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 83 transitions, 490 flow [2023-08-03 19:50:07,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 19:50:07,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 19:50:07,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 535 transitions. [2023-08-03 19:50:07,693 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5371485943775101 [2023-08-03 19:50:07,694 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 535 transitions. [2023-08-03 19:50:07,694 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 535 transitions. [2023-08-03 19:50:07,694 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:50:07,694 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 535 transitions. [2023-08-03 19:50:07,695 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 133.75) internal successors, (535), 4 states have internal predecessors, (535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:50:07,696 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 249.0) internal successors, (1245), 5 states have internal predecessors, (1245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:50:07,697 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 249.0) internal successors, (1245), 5 states have internal predecessors, (1245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:50:07,697 INFO L175 Difference]: Start difference. First operand has 77 places, 63 transitions, 284 flow. Second operand 4 states and 535 transitions. [2023-08-03 19:50:07,697 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 83 transitions, 490 flow [2023-08-03 19:50:07,833 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 83 transitions, 486 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-03 19:50:07,834 INFO L231 Difference]: Finished difference. Result has 81 places, 61 transitions, 282 flow [2023-08-03 19:50:07,834 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=249, PETRI_DIFFERENCE_MINUEND_FLOW=280, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=282, PETRI_PLACES=81, PETRI_TRANSITIONS=61} [2023-08-03 19:50:07,834 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 28 predicate places. [2023-08-03 19:50:07,835 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 61 transitions, 282 flow [2023-08-03 19:50:07,835 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 123.8) internal successors, (619), 5 states have internal predecessors, (619), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:50:07,835 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:50:07,835 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:50:07,839 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-08-03 19:50:08,035 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:50:08,036 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 19:50:08,036 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:50:08,036 INFO L85 PathProgramCache]: Analyzing trace with hash -729078192, now seen corresponding path program 1 times [2023-08-03 19:50:08,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:50:08,036 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [161475695] [2023-08-03 19:50:08,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:50:08,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:50:08,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:50:08,711 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2023-08-03 19:50:08,711 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:50:08,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [161475695] [2023-08-03 19:50:08,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [161475695] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:50:08,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [954958633] [2023-08-03 19:50:08,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:50:08,712 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:50:08,712 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:50:08,713 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 19:50:08,739 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-08-03 19:50:08,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:50:08,822 INFO L262 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-03 19:50:08,824 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:50:11,364 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2023-08-03 19:50:11,364 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 19:50:11,772 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2023-08-03 19:50:11,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [954958633] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 19:50:11,772 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 19:50:11,772 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2023-08-03 19:50:11,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1996237582] [2023-08-03 19:50:11,772 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 19:50:11,773 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-08-03 19:50:11,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:50:11,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-08-03 19:50:11,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2023-08-03 19:50:11,829 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 249 [2023-08-03 19:50:11,830 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 61 transitions, 282 flow. Second operand has 11 states, 11 states have (on average 115.0) internal successors, (1265), 11 states have internal predecessors, (1265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:50:11,830 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:50:11,830 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 249 [2023-08-03 19:50:11,830 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:50:15,330 INFO L124 PetriNetUnfolderBase]: 17435/28149 cut-off events. [2023-08-03 19:50:15,331 INFO L125 PetriNetUnfolderBase]: For 17480/17480 co-relation queries the response was YES. [2023-08-03 19:50:15,424 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70168 conditions, 28149 events. 17435/28149 cut-off events. For 17480/17480 co-relation queries the response was YES. Maximal size of possible extension queue 797. Compared 197462 event pairs, 3218 based on Foata normal form. 3/28074 useless extension candidates. Maximal degree in co-relation 69536. Up to 7386 conditions per place. [2023-08-03 19:50:15,462 INFO L140 encePairwiseOnDemand]: 241/249 looper letters, 246 selfloop transitions, 29 changer transitions 53/334 dead transitions. [2023-08-03 19:50:15,463 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 334 transitions, 2246 flow [2023-08-03 19:50:15,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-03 19:50:15,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-08-03 19:50:15,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1461 transitions. [2023-08-03 19:50:15,466 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5334063526834611 [2023-08-03 19:50:15,466 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1461 transitions. [2023-08-03 19:50:15,466 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1461 transitions. [2023-08-03 19:50:15,467 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:50:15,467 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1461 transitions. [2023-08-03 19:50:15,470 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 132.8181818181818) internal successors, (1461), 11 states have internal predecessors, (1461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:50:15,473 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 249.0) internal successors, (2988), 12 states have internal predecessors, (2988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:50:15,474 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 249.0) internal successors, (2988), 12 states have internal predecessors, (2988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:50:15,474 INFO L175 Difference]: Start difference. First operand has 81 places, 61 transitions, 282 flow. Second operand 11 states and 1461 transitions. [2023-08-03 19:50:15,474 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 334 transitions, 2246 flow [2023-08-03 19:50:15,966 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 334 transitions, 2180 flow, removed 5 selfloop flow, removed 4 redundant places. [2023-08-03 19:50:15,968 INFO L231 Difference]: Finished difference. Result has 93 places, 91 transitions, 459 flow [2023-08-03 19:50:15,969 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=249, PETRI_DIFFERENCE_MINUEND_FLOW=272, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=459, PETRI_PLACES=93, PETRI_TRANSITIONS=91} [2023-08-03 19:50:15,969 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 40 predicate places. [2023-08-03 19:50:15,969 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 91 transitions, 459 flow [2023-08-03 19:50:15,970 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 115.0) internal successors, (1265), 11 states have internal predecessors, (1265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:50:15,970 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:50:15,970 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:50:15,978 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-08-03 19:50:16,174 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-08-03 19:50:16,175 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 19:50:16,175 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:50:16,175 INFO L85 PathProgramCache]: Analyzing trace with hash -1077579158, now seen corresponding path program 1 times [2023-08-03 19:50:16,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:50:16,175 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1587810670] [2023-08-03 19:50:16,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:50:16,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:50:16,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:50:16,931 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2023-08-03 19:50:16,932 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:50:16,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1587810670] [2023-08-03 19:50:16,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1587810670] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:50:16,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1520777364] [2023-08-03 19:50:16,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:50:16,932 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:50:16,932 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:50:16,934 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 19:50:16,936 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-08-03 19:50:17,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:50:17,045 INFO L262 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-03 19:50:17,048 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:50:17,265 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2023-08-03 19:50:17,265 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 19:50:17,372 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2023-08-03 19:50:17,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1520777364] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 19:50:17,372 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 19:50:17,372 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 3] total 8 [2023-08-03 19:50:17,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377329404] [2023-08-03 19:50:17,372 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 19:50:17,373 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-03 19:50:17,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:50:17,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-03 19:50:17,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-08-03 19:50:17,440 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 249 [2023-08-03 19:50:17,441 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 91 transitions, 459 flow. Second operand has 9 states, 9 states have (on average 115.0) internal successors, (1035), 9 states have internal predecessors, (1035), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:50:17,441 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:50:17,441 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 249 [2023-08-03 19:50:17,441 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:50:20,732 INFO L124 PetriNetUnfolderBase]: 18692/31289 cut-off events. [2023-08-03 19:50:20,732 INFO L125 PetriNetUnfolderBase]: For 68082/68082 co-relation queries the response was YES. [2023-08-03 19:50:20,816 INFO L83 FinitePrefix]: Finished finitePrefix Result has 108691 conditions, 31289 events. 18692/31289 cut-off events. For 68082/68082 co-relation queries the response was YES. Maximal size of possible extension queue 968. Compared 241501 event pairs, 1281 based on Foata normal form. 4/31148 useless extension candidates. Maximal degree in co-relation 108664. Up to 8981 conditions per place. [2023-08-03 19:50:20,838 INFO L140 encePairwiseOnDemand]: 241/249 looper letters, 0 selfloop transitions, 0 changer transitions 292/292 dead transitions. [2023-08-03 19:50:20,838 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 292 transitions, 2070 flow [2023-08-03 19:50:20,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-03 19:50:20,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-03 19:50:20,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1188 transitions. [2023-08-03 19:50:20,842 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5301204819277109 [2023-08-03 19:50:20,842 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1188 transitions. [2023-08-03 19:50:20,842 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1188 transitions. [2023-08-03 19:50:20,842 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:50:20,843 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1188 transitions. [2023-08-03 19:50:20,845 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 132.0) internal successors, (1188), 9 states have internal predecessors, (1188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:50:20,847 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 249.0) internal successors, (2490), 10 states have internal predecessors, (2490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:50:20,848 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 249.0) internal successors, (2490), 10 states have internal predecessors, (2490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:50:20,848 INFO L175 Difference]: Start difference. First operand has 93 places, 91 transitions, 459 flow. Second operand 9 states and 1188 transitions. [2023-08-03 19:50:20,848 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 292 transitions, 2070 flow [2023-08-03 19:50:21,675 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 292 transitions, 2043 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-03 19:50:21,677 INFO L231 Difference]: Finished difference. Result has 95 places, 0 transitions, 0 flow [2023-08-03 19:50:21,677 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=249, PETRI_DIFFERENCE_MINUEND_FLOW=436, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=0, PETRI_PLACES=95, PETRI_TRANSITIONS=0} [2023-08-03 19:50:21,677 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 42 predicate places. [2023-08-03 19:50:21,677 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 0 transitions, 0 flow [2023-08-03 19:50:21,678 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 115.0) internal successors, (1035), 9 states have internal predecessors, (1035), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:50:21,678 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2023-08-03 19:50:21,678 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2023-08-03 19:50:21,678 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-08-03 19:50:21,678 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-08-03 19:50:21,682 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2023-08-03 19:50:21,878 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-08-03 19:50:21,879 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:50:21,880 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 2 thread instances [2023-08-03 19:50:21,880 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-03 19:50:21,883 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.08 07:50:21 BasicIcfg [2023-08-03 19:50:21,883 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-03 19:50:21,884 INFO L158 Benchmark]: Toolchain (without parser) took 55909.91ms. Allocated memory was 354.4MB in the beginning and 13.1GB in the end (delta: 12.8GB). Free memory was 307.0MB in the beginning and 10.4GB in the end (delta: -10.1GB). Peak memory consumption was 3.1GB. Max. memory is 16.0GB. [2023-08-03 19:50:21,884 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 354.4MB. Free memory is still 302.6MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-03 19:50:21,884 INFO L158 Benchmark]: CACSL2BoogieTranslator took 231.81ms. Allocated memory is still 354.4MB. Free memory was 306.7MB in the beginning and 295.5MB in the end (delta: 11.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.0GB. [2023-08-03 19:50:21,884 INFO L158 Benchmark]: Boogie Procedure Inliner took 31.18ms. Allocated memory is still 354.4MB. Free memory was 295.5MB in the beginning and 293.8MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-03 19:50:21,885 INFO L158 Benchmark]: Boogie Preprocessor took 32.62ms. Allocated memory is still 354.4MB. Free memory was 293.8MB in the beginning and 292.4MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-03 19:50:21,885 INFO L158 Benchmark]: RCFGBuilder took 430.89ms. Allocated memory is still 354.4MB. Free memory was 292.0MB in the beginning and 277.3MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. [2023-08-03 19:50:21,885 INFO L158 Benchmark]: TraceAbstraction took 55177.76ms. Allocated memory was 354.4MB in the beginning and 13.1GB in the end (delta: 12.8GB). Free memory was 276.6MB in the beginning and 10.4GB in the end (delta: -10.1GB). Peak memory consumption was 3.1GB. Max. memory is 16.0GB. [2023-08-03 19:50:21,886 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 354.4MB. Free memory is still 302.6MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 231.81ms. Allocated memory is still 354.4MB. Free memory was 306.7MB in the beginning and 295.5MB in the end (delta: 11.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 31.18ms. Allocated memory is still 354.4MB. Free memory was 295.5MB in the beginning and 293.8MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 32.62ms. Allocated memory is still 354.4MB. Free memory was 293.8MB in the beginning and 292.4MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.0GB. * RCFGBuilder took 430.89ms. Allocated memory is still 354.4MB. Free memory was 292.0MB in the beginning and 277.3MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. * TraceAbstraction took 55177.76ms. Allocated memory was 354.4MB in the beginning and 13.1GB in the end (delta: 12.8GB). Free memory was 276.6MB in the beginning and 10.4GB in the end (delta: -10.1GB). Peak memory consumption was 3.1GB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.4s, 113 PlacesBefore, 38 PlacesAfterwards, 122 TransitionsBefore, 40 TransitionsAfterwards, 1260 CoEnabledTransitionPairs, 6 FixpointIterations, 27 TrivialSequentialCompositions, 44 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 15 ConcurrentYvCompositions, 7 ChoiceCompositions, 93 TotalNumberOfCompositions, 3926 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2969, independent: 2915, independent conditional: 0, independent unconditional: 2915, dependent: 54, dependent conditional: 0, dependent unconditional: 54, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 724, independent: 709, independent conditional: 0, independent unconditional: 709, dependent: 15, dependent conditional: 0, dependent unconditional: 15, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 2969, independent: 2206, independent conditional: 0, independent unconditional: 2206, dependent: 39, dependent conditional: 0, dependent unconditional: 39, unknown: 724, unknown conditional: 0, unknown unconditional: 724] , Statistics on independence cache: Total cache size (in pairs): 69, Positive cache size: 66, Positive conditional cache size: 0, Positive unconditional cache size: 66, Negative cache size: 3, Negative conditional cache size: 0, Negative unconditional cache size: 3, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.4s, 131 PlacesBefore, 53 PlacesAfterwards, 143 TransitionsBefore, 58 TransitionsAfterwards, 3060 CoEnabledTransitionPairs, 6 FixpointIterations, 27 TrivialSequentialCompositions, 47 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 15 ConcurrentYvCompositions, 7 ChoiceCompositions, 96 TotalNumberOfCompositions, 11688 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 7902, independent: 7798, independent conditional: 0, independent unconditional: 7798, dependent: 104, dependent conditional: 0, dependent unconditional: 104, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1724, independent: 1707, independent conditional: 0, independent unconditional: 1707, dependent: 17, dependent conditional: 0, dependent unconditional: 17, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 7902, independent: 6091, independent conditional: 0, independent unconditional: 6091, dependent: 87, dependent conditional: 0, dependent unconditional: 87, unknown: 1724, unknown conditional: 0, unknown unconditional: 1724] , Statistics on independence cache: Total cache size (in pairs): 209, Positive cache size: 206, Positive conditional cache size: 0, Positive unconditional cache size: 206, Negative cache size: 3, Negative conditional cache size: 0, Negative unconditional cache size: 3, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 76]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 129 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 2.8s, OverallIterations: 1, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.6s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=122occurred in iteration=0, InterpolantAutomatonStates: 0, 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, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 6 NumberOfCodeBlocks, 6 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 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 - StatisticsResult: Ultimate Automizer benchmark data with 2 thread instances CFG has 10 procedures, 141 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 52.3s, OverallIterations: 17, TraceHistogramMax: 3, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 38.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.9s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1389 SdHoareTripleChecker+Valid, 2.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1231 mSDsluCounter, 114 SdHoareTripleChecker+Invalid, 2.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 74 mSDsCounter, 104 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3363 IncrementalHoareTripleChecker+Invalid, 3467 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 104 mSolverCounterUnsat, 40 mSDtfsCounter, 3363 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 962 GetRequests, 873 SyntacticMatches, 12 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 1.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=459occurred in iteration=16, InterpolantAutomatonStates: 77, 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: 0.2s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 5.9s InterpolantComputationTime, 1079 NumberOfCodeBlocks, 1079 NumberOfCodeBlocksAsserted, 33 NumberOfCheckSat, 1396 ConstructedInterpolants, 0 QuantifiedInterpolants, 8385 SizeOfPredicates, 9 NumberOfNonLiveVariables, 2751 ConjunctsInSsa, 55 ConjunctsInUnsatCore, 41 InterpolantComputations, 9 PerfectInterpolantSequences, 645/707 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! [2023-08-03 19:50:21,905 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...