/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_bench-exp2x4.wvr_bound2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-19404b3-m [2023-08-03 19:22:42,342 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-03 19:22:42,396 INFO L114 SettingsManager]: Loading settings from /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-03 19:22:42,402 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-03 19:22:42,402 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-08-03 19:22:42,402 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Translation Mode: [2023-08-03 19:22:42,402 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-03 19:22:42,426 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-03 19:22:42,426 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-03 19:22:42,426 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-03 19:22:42,427 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-03 19:22:42,427 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-03 19:22:42,427 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-03 19:22:42,428 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-03 19:22:42,428 INFO L153 SettingsManager]: * Use SBE=true [2023-08-03 19:22:42,428 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-03 19:22:42,428 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-03 19:22:42,430 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-03 19:22:42,430 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-03 19:22:42,430 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-03 19:22:42,433 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-03 19:22:42,433 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-03 19:22:42,433 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-03 19:22:42,434 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-03 19:22:42,435 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-03 19:22:42,435 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-03 19:22:42,435 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-03 19:22:42,436 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-03 19:22:42,436 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-03 19:22:42,436 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-03 19:22:42,437 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 19:22:42,437 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-03 19:22:42,437 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-03 19:22:42,437 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-03 19:22:42,437 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-03 19:22:42,437 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-03 19:22:42,437 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-03 19:22:42,438 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-03 19:22:42,438 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-03 19:22:42,438 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-03 19:22:42,438 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-03 19:22:42,438 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> TOGETHER [2023-08-03 19:22:42,605 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-03 19:22:42,617 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-03 19:22:42,619 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-03 19:22:42,619 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-03 19:22:42,621 INFO L274 PluginConnector]: CDTParser initialized [2023-08-03 19:22:42,621 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/CAV22/benchmarks/increased_bounds/weaver_bench-exp2x4.wvr_bound2.c [2023-08-03 19:22:43,508 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-03 19:22:43,657 INFO L384 CDTParser]: Found 1 translation units. [2023-08-03 19:22:43,657 INFO L180 CDTParser]: Scanning /storage/repos/CAV22/benchmarks/increased_bounds/weaver_bench-exp2x4.wvr_bound2.c [2023-08-03 19:22:43,662 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/898c4cf76/26c490dd48d84d6f96ea9ab3f250853e/FLAGf656e842f [2023-08-03 19:22:43,671 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/898c4cf76/26c490dd48d84d6f96ea9ab3f250853e [2023-08-03 19:22:43,672 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-03 19:22:43,673 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-03 19:22:43,674 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-03 19:22:43,674 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-03 19:22:43,676 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-03 19:22:43,677 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 07:22:43" (1/1) ... [2023-08-03 19:22:43,677 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6e45cdc5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:22:43, skipping insertion in model container [2023-08-03 19:22:43,677 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 07:22:43" (1/1) ... [2023-08-03 19:22:43,691 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-03 19:22:43,821 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_bench-exp2x4.wvr_bound2.c[2633,2646] [2023-08-03 19:22:43,826 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 19:22:43,834 INFO L201 MainTranslator]: Completed pre-run [2023-08-03 19:22:43,870 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_bench-exp2x4.wvr_bound2.c[2633,2646] [2023-08-03 19:22:43,870 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 19:22:43,879 INFO L206 MainTranslator]: Completed translation [2023-08-03 19:22:43,880 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:22:43 WrapperNode [2023-08-03 19:22:43,880 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-03 19:22:43,882 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-03 19:22:43,882 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-03 19:22:43,882 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-03 19:22:43,886 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:22:43" (1/1) ... [2023-08-03 19:22:43,901 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:22:43" (1/1) ... [2023-08-03 19:22:43,923 INFO L138 Inliner]: procedures = 20, calls = 32, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 160 [2023-08-03 19:22:43,923 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-03 19:22:43,924 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-03 19:22:43,924 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-03 19:22:43,924 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-03 19:22:43,930 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:22:43" (1/1) ... [2023-08-03 19:22:43,930 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:22:43" (1/1) ... [2023-08-03 19:22:43,939 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:22:43" (1/1) ... [2023-08-03 19:22:43,940 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:22:43" (1/1) ... [2023-08-03 19:22:43,948 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:22:43" (1/1) ... [2023-08-03 19:22:43,951 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:22:43" (1/1) ... [2023-08-03 19:22:43,952 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:22:43" (1/1) ... [2023-08-03 19:22:43,953 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:22:43" (1/1) ... [2023-08-03 19:22:43,955 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-03 19:22:43,955 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-03 19:22:43,955 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-03 19:22:43,955 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-03 19:22:43,956 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:22:43" (1/1) ... [2023-08-03 19:22:43,964 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 19:22:43,971 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:22:43,981 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 19:22:43,988 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 19:22:44,004 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-03 19:22:44,004 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-03 19:22:44,004 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-03 19:22:44,004 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-03 19:22:44,004 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-03 19:22:44,004 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-08-03 19:22:44,005 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-08-03 19:22:44,005 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2023-08-03 19:22:44,005 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2023-08-03 19:22:44,005 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-03 19:22:44,005 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-03 19:22:44,006 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-03 19:22:44,006 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-03 19:22:44,006 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-03 19:22:44,006 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-03 19:22:44,007 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-03 19:22:44,008 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 19:22:44,082 INFO L236 CfgBuilder]: Building ICFG [2023-08-03 19:22:44,083 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-03 19:22:44,316 INFO L277 CfgBuilder]: Performing block encoding [2023-08-03 19:22:44,321 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-03 19:22:44,321 INFO L302 CfgBuilder]: Removed 12 assume(true) statements. [2023-08-03 19:22:44,323 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 07:22:44 BoogieIcfgContainer [2023-08-03 19:22:44,323 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-03 19:22:44,324 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-03 19:22:44,324 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-03 19:22:44,326 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-03 19:22:44,326 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.08 07:22:43" (1/3) ... [2023-08-03 19:22:44,327 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e866b4d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 07:22:44, skipping insertion in model container [2023-08-03 19:22:44,327 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:22:43" (2/3) ... [2023-08-03 19:22:44,327 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e866b4d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 07:22:44, skipping insertion in model container [2023-08-03 19:22:44,327 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 07:22:44" (3/3) ... [2023-08-03 19:22:44,328 INFO L112 eAbstractionObserver]: Analyzing ICFG weaver_bench-exp2x4.wvr_bound2.c [2023-08-03 19:22:44,333 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-03 19:22:44,338 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-03 19:22:44,339 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-03 19:22:44,339 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-03 19:22:44,391 INFO L144 ThreadInstanceAdder]: Constructed 16 joinOtherThreadTransitions. [2023-08-03 19:22:44,416 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 170 places, 195 transitions, 458 flow [2023-08-03 19:22:44,601 INFO L124 PetriNetUnfolderBase]: 269/1452 cut-off events. [2023-08-03 19:22:44,601 INFO L125 PetriNetUnfolderBase]: For 128/128 co-relation queries the response was YES. [2023-08-03 19:22:44,610 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1630 conditions, 1452 events. 269/1452 cut-off events. For 128/128 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 9671 event pairs, 0 based on Foata normal form. 0/1201 useless extension candidates. Maximal degree in co-relation 805. Up to 33 conditions per place. [2023-08-03 19:22:44,610 INFO L82 GeneralOperation]: Start removeDead. Operand has 170 places, 195 transitions, 458 flow [2023-08-03 19:22:44,617 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 170 places, 195 transitions, 458 flow [2023-08-03 19:22:44,619 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 19:22:44,624 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 170 places, 195 transitions, 458 flow [2023-08-03 19:22:44,626 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 170 places, 195 transitions, 458 flow [2023-08-03 19:22:44,626 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 170 places, 195 transitions, 458 flow [2023-08-03 19:22:44,721 INFO L124 PetriNetUnfolderBase]: 269/1452 cut-off events. [2023-08-03 19:22:44,721 INFO L125 PetriNetUnfolderBase]: For 128/128 co-relation queries the response was YES. [2023-08-03 19:22:44,727 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1630 conditions, 1452 events. 269/1452 cut-off events. For 128/128 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 9671 event pairs, 0 based on Foata normal form. 0/1201 useless extension candidates. Maximal degree in co-relation 805. Up to 33 conditions per place. [2023-08-03 19:22:44,741 INFO L119 LiptonReduction]: Number of co-enabled transitions 6244 [2023-08-03 19:22:47,780 INFO L134 LiptonReduction]: Checked pairs total: 16931 [2023-08-03 19:22:47,780 INFO L136 LiptonReduction]: Total number of compositions: 149 [2023-08-03 19:22:47,797 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-03 19:22:47,802 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;@6d1c67f2, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 19:22:47,802 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2023-08-03 19:22:47,808 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 19:22:47,808 INFO L124 PetriNetUnfolderBase]: 3/33 cut-off events. [2023-08-03 19:22:47,808 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 19:22:47,809 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:22:47,809 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-03 19:22:47,810 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 2 more)] === [2023-08-03 19:22:47,814 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:22:47,814 INFO L85 PathProgramCache]: Analyzing trace with hash -754791672, now seen corresponding path program 1 times [2023-08-03 19:22:47,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:22:47,820 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [451131568] [2023-08-03 19:22:47,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:22:47,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:22:47,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 19:22:47,898 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-03 19:22:47,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 19:22:47,926 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-03 19:22:47,927 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-03 19:22:47,928 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 5 remaining) [2023-08-03 19:22:47,929 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 5 remaining) [2023-08-03 19:22:47,929 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 5 remaining) [2023-08-03 19:22:47,929 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 5 remaining) [2023-08-03 19:22:47,929 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 5 remaining) [2023-08-03 19:22:47,930 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-03 19:22:47,930 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-03 19:22:47,932 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-03 19:22:47,932 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-03 19:22:47,955 INFO L144 ThreadInstanceAdder]: Constructed 32 joinOtherThreadTransitions. [2023-08-03 19:22:47,958 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 202 places, 243 transitions, 630 flow [2023-08-03 19:22:49,748 INFO L124 PetriNetUnfolderBase]: 5482/20120 cut-off events. [2023-08-03 19:22:49,749 INFO L125 PetriNetUnfolderBase]: For 4176/4176 co-relation queries the response was YES. [2023-08-03 19:22:49,842 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24505 conditions, 20120 events. 5482/20120 cut-off events. For 4176/4176 co-relation queries the response was YES. Maximal size of possible extension queue 370. Compared 211067 event pairs, 162 based on Foata normal form. 0/17159 useless extension candidates. Maximal degree in co-relation 12103. Up to 1024 conditions per place. [2023-08-03 19:22:49,843 INFO L82 GeneralOperation]: Start removeDead. Operand has 202 places, 243 transitions, 630 flow [2023-08-03 19:22:49,927 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 202 places, 243 transitions, 630 flow [2023-08-03 19:22:49,927 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 19:22:49,927 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 202 places, 243 transitions, 630 flow [2023-08-03 19:22:49,927 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 202 places, 243 transitions, 630 flow [2023-08-03 19:22:49,928 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 202 places, 243 transitions, 630 flow [2023-08-03 19:22:51,600 INFO L124 PetriNetUnfolderBase]: 5482/20120 cut-off events. [2023-08-03 19:22:51,600 INFO L125 PetriNetUnfolderBase]: For 4176/4176 co-relation queries the response was YES. [2023-08-03 19:22:51,678 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24505 conditions, 20120 events. 5482/20120 cut-off events. For 4176/4176 co-relation queries the response was YES. Maximal size of possible extension queue 370. Compared 211067 event pairs, 162 based on Foata normal form. 0/17159 useless extension candidates. Maximal degree in co-relation 12103. Up to 1024 conditions per place. [2023-08-03 19:22:51,856 INFO L119 LiptonReduction]: Number of co-enabled transitions 16072 [2023-08-03 19:22:54,867 INFO L134 LiptonReduction]: Checked pairs total: 77946 [2023-08-03 19:22:54,867 INFO L136 LiptonReduction]: Total number of compositions: 159 [2023-08-03 19:22:54,869 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-03 19:22:54,869 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;@6d1c67f2, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 19:22:54,869 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2023-08-03 19:22:54,872 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 19:22:54,872 INFO L124 PetriNetUnfolderBase]: 4/63 cut-off events. [2023-08-03 19:22:54,873 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-08-03 19:22:54,873 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:22:54,873 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:22:54,873 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-03 19:22:54,873 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:22:54,873 INFO L85 PathProgramCache]: Analyzing trace with hash 1458395524, now seen corresponding path program 1 times [2023-08-03 19:22:54,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:22:54,873 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [262599589] [2023-08-03 19:22:54,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:22:54,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:22:54,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:22:54,968 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 19:22:54,968 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:22:54,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [262599589] [2023-08-03 19:22:54,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [262599589] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 19:22:54,968 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 19:22:54,969 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-03 19:22:54,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196405158] [2023-08-03 19:22:54,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 19:22:54,974 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 19:22:54,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:22:54,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 19:22:54,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 19:22:55,009 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 180 out of 402 [2023-08-03 19:22:55,013 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 110 transitions, 364 flow. Second operand has 3 states, 3 states have (on average 183.0) internal successors, (549), 3 states have internal predecessors, (549), 0 states have call successors, (0), 0 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 19:22:55,013 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:22:55,014 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 180 of 402 [2023-08-03 19:22:55,014 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:23:21,091 INFO L124 PetriNetUnfolderBase]: 308292/425078 cut-off events. [2023-08-03 19:23:21,091 INFO L125 PetriNetUnfolderBase]: For 107486/107486 co-relation queries the response was YES. [2023-08-03 19:23:23,346 INFO L83 FinitePrefix]: Finished finitePrefix Result has 897582 conditions, 425078 events. 308292/425078 cut-off events. For 107486/107486 co-relation queries the response was YES. Maximal size of possible extension queue 6511. Compared 3047381 event pairs, 212879 based on Foata normal form. 0/395777 useless extension candidates. Maximal degree in co-relation 371446. Up to 398775 conditions per place. [2023-08-03 19:23:25,204 INFO L140 encePairwiseOnDemand]: 398/402 looper letters, 74 selfloop transitions, 2 changer transitions 0/112 dead transitions. [2023-08-03 19:23:25,204 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 112 transitions, 520 flow [2023-08-03 19:23:25,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 19:23:25,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 19:23:25,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 618 transitions. [2023-08-03 19:23:25,214 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5124378109452736 [2023-08-03 19:23:25,214 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 618 transitions. [2023-08-03 19:23:25,214 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 618 transitions. [2023-08-03 19:23:25,216 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:23:25,217 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 618 transitions. [2023-08-03 19:23:25,220 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 206.0) internal successors, (618), 3 states have internal predecessors, (618), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:23:25,223 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 402.0) internal successors, (1608), 4 states have internal predecessors, (1608), 0 states have call successors, (0), 0 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 19:23:25,224 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 402.0) internal successors, (1608), 4 states have internal predecessors, (1608), 0 states have call successors, (0), 0 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 19:23:25,225 INFO L175 Difference]: Start difference. First operand has 87 places, 110 transitions, 364 flow. Second operand 3 states and 618 transitions. [2023-08-03 19:23:25,226 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 112 transitions, 520 flow [2023-08-03 19:23:25,316 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 112 transitions, 520 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-03 19:23:25,318 INFO L231 Difference]: Finished difference. Result has 89 places, 110 transitions, 374 flow [2023-08-03 19:23:25,319 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=402, PETRI_DIFFERENCE_MINUEND_FLOW=362, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=374, PETRI_PLACES=89, PETRI_TRANSITIONS=110} [2023-08-03 19:23:25,321 INFO L281 CegarLoopForPetriNet]: 87 programPoint places, 2 predicate places. [2023-08-03 19:23:25,321 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 110 transitions, 374 flow [2023-08-03 19:23:25,321 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 183.0) internal successors, (549), 3 states have internal predecessors, (549), 0 states have call successors, (0), 0 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 19:23:25,321 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:23:25,322 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-08-03 19:23:25,322 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-03 19:23:25,322 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-03 19:23:25,322 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:23:25,322 INFO L85 PathProgramCache]: Analyzing trace with hash -1670290548, now seen corresponding path program 1 times [2023-08-03 19:23:25,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:23:25,322 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1720688535] [2023-08-03 19:23:25,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:23:25,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:23:25,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:23:25,385 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 19:23:25,385 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:23:25,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1720688535] [2023-08-03 19:23:25,385 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1720688535] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:23:25,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [666776375] [2023-08-03 19:23:25,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:23:25,386 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:23:25,386 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:23:25,388 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 19:23:25,389 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 19:23:25,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:23:25,444 INFO L262 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-03 19:23:25,445 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:23:25,494 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 19:23:25,495 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 19:23:25,495 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [666776375] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 19:23:25,495 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 19:23:25,495 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 5 [2023-08-03 19:23:25,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960148879] [2023-08-03 19:23:25,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 19:23:25,496 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 19:23:25,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:23:25,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 19:23:25,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-03 19:23:25,506 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 179 out of 402 [2023-08-03 19:23:25,507 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 110 transitions, 374 flow. Second operand has 5 states, 5 states have (on average 180.6) internal successors, (903), 5 states have internal predecessors, (903), 0 states have call successors, (0), 0 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 19:23:25,507 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:23:25,507 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 179 of 402 [2023-08-03 19:23:25,507 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:23:50,961 INFO L124 PetriNetUnfolderBase]: 308290/425076 cut-off events. [2023-08-03 19:23:50,961 INFO L125 PetriNetUnfolderBase]: For 107480/107480 co-relation queries the response was YES. [2023-08-03 19:23:53,443 INFO L83 FinitePrefix]: Finished finitePrefix Result has 897585 conditions, 425076 events. 308290/425076 cut-off events. For 107480/107480 co-relation queries the response was YES. Maximal size of possible extension queue 6505. Compared 3046977 event pairs, 182676 based on Foata normal form. 4/395787 useless extension candidates. Maximal degree in co-relation 557134. Up to 398754 conditions per place. [2023-08-03 19:23:55,781 INFO L140 encePairwiseOnDemand]: 398/402 looper letters, 75 selfloop transitions, 4 changer transitions 0/114 dead transitions. [2023-08-03 19:23:55,782 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 114 transitions, 538 flow [2023-08-03 19:23:55,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-03 19:23:55,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-03 19:23:55,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 975 transitions. [2023-08-03 19:23:55,801 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48507462686567165 [2023-08-03 19:23:55,801 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 975 transitions. [2023-08-03 19:23:55,802 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 975 transitions. [2023-08-03 19:23:55,802 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:23:55,802 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 975 transitions. [2023-08-03 19:23:55,804 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 195.0) internal successors, (975), 5 states have internal predecessors, (975), 0 states have call successors, (0), 0 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 19:23:55,820 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 402.0) internal successors, (2412), 6 states have internal predecessors, (2412), 0 states have call successors, (0), 0 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 19:23:55,821 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 402.0) internal successors, (2412), 6 states have internal predecessors, (2412), 0 states have call successors, (0), 0 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 19:23:55,821 INFO L175 Difference]: Start difference. First operand has 89 places, 110 transitions, 374 flow. Second operand 5 states and 975 transitions. [2023-08-03 19:23:55,821 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 114 transitions, 538 flow [2023-08-03 19:23:55,898 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 114 transitions, 526 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-03 19:23:55,900 INFO L231 Difference]: Finished difference. Result has 91 places, 110 transitions, 377 flow [2023-08-03 19:23:55,901 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=402, PETRI_DIFFERENCE_MINUEND_FLOW=356, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=377, PETRI_PLACES=91, PETRI_TRANSITIONS=110} [2023-08-03 19:23:55,901 INFO L281 CegarLoopForPetriNet]: 87 programPoint places, 4 predicate places. [2023-08-03 19:23:55,901 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 110 transitions, 377 flow [2023-08-03 19:23:55,902 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 180.6) internal successors, (903), 5 states have internal predecessors, (903), 0 states have call successors, (0), 0 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 19:23:55,902 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:23:55,902 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:23:55,910 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-08-03 19:23:56,106 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 19:23:56,106 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-03 19:23:56,107 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:23:56,107 INFO L85 PathProgramCache]: Analyzing trace with hash -1190630007, now seen corresponding path program 1 times [2023-08-03 19:23:56,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:23:56,107 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [582647348] [2023-08-03 19:23:56,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:23:56,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:23:56,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:23:56,212 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 19:23:56,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:23:56,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [582647348] [2023-08-03 19:23:56,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [582647348] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:23:56,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [897869026] [2023-08-03 19:23:56,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:23:56,213 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:23:56,213 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:23:56,229 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 19:23:56,294 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 19:23:56,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:23:56,365 INFO L262 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-03 19:23:56,365 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:23:56,372 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 19:23:56,372 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 19:23:56,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [897869026] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 19:23:56,373 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 19:23:56,373 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-08-03 19:23:56,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604621292] [2023-08-03 19:23:56,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 19:23:56,373 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 19:23:56,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:23:56,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 19:23:56,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-03 19:23:56,381 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 180 out of 402 [2023-08-03 19:23:56,381 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 110 transitions, 377 flow. Second operand has 3 states, 3 states have (on average 184.0) internal successors, (552), 3 states have internal predecessors, (552), 0 states have call successors, (0), 0 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 19:23:56,381 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:23:56,381 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 180 of 402 [2023-08-03 19:23:56,382 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:24:21,466 INFO L124 PetriNetUnfolderBase]: 305996/419818 cut-off events. [2023-08-03 19:24:21,467 INFO L125 PetriNetUnfolderBase]: For 99854/99854 co-relation queries the response was YES. [2023-08-03 19:24:24,113 INFO L83 FinitePrefix]: Finished finitePrefix Result has 879888 conditions, 419818 events. 305996/419818 cut-off events. For 99854/99854 co-relation queries the response was YES. Maximal size of possible extension queue 6764. Compared 2976489 event pairs, 211814 based on Foata normal form. 0/390369 useless extension candidates. Maximal degree in co-relation 389065. Up to 395497 conditions per place. [2023-08-03 19:24:25,925 INFO L140 encePairwiseOnDemand]: 399/402 looper letters, 77 selfloop transitions, 3 changer transitions 0/115 dead transitions. [2023-08-03 19:24:25,926 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 115 transitions, 547 flow [2023-08-03 19:24:25,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 19:24:25,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 19:24:25,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 619 transitions. [2023-08-03 19:24:25,929 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5132669983416253 [2023-08-03 19:24:25,929 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 619 transitions. [2023-08-03 19:24:25,929 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 619 transitions. [2023-08-03 19:24:25,929 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:24:25,929 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 619 transitions. [2023-08-03 19:24:25,930 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 206.33333333333334) internal successors, (619), 3 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 19:24:25,932 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 402.0) internal successors, (1608), 4 states have internal predecessors, (1608), 0 states have call successors, (0), 0 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 19:24:25,932 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 402.0) internal successors, (1608), 4 states have internal predecessors, (1608), 0 states have call successors, (0), 0 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 19:24:25,932 INFO L175 Difference]: Start difference. First operand has 91 places, 110 transitions, 377 flow. Second operand 3 states and 619 transitions. [2023-08-03 19:24:25,932 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 115 transitions, 547 flow [2023-08-03 19:24:25,977 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 115 transitions, 540 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-08-03 19:24:25,979 INFO L231 Difference]: Finished difference. Result has 92 places, 111 transitions, 385 flow [2023-08-03 19:24:25,979 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=402, PETRI_DIFFERENCE_MINUEND_FLOW=370, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=385, PETRI_PLACES=92, PETRI_TRANSITIONS=111} [2023-08-03 19:24:25,980 INFO L281 CegarLoopForPetriNet]: 87 programPoint places, 5 predicate places. [2023-08-03 19:24:25,980 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 111 transitions, 385 flow [2023-08-03 19:24:25,980 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 184.0) internal successors, (552), 3 states have internal predecessors, (552), 0 states have call successors, (0), 0 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 19:24:25,980 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:24:25,980 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:24:25,985 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-08-03 19:24:26,185 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 19:24:26,187 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-03 19:24:26,187 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:24:26,187 INFO L85 PathProgramCache]: Analyzing trace with hash 1876183727, now seen corresponding path program 1 times [2023-08-03 19:24:26,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:24:26,188 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2089716249] [2023-08-03 19:24:26,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:24:26,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:24:26,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:24:26,248 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 19:24:26,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:24:26,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2089716249] [2023-08-03 19:24:26,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2089716249] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:24:26,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [970064036] [2023-08-03 19:24:26,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:24:26,248 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:24:26,249 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:24:26,250 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 19:24:26,251 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 19:24:26,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:24:26,307 INFO L262 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-03 19:24:26,307 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:24:26,320 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 19:24:26,320 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 19:24:26,337 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 19:24:26,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [970064036] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 19:24:26,337 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 19:24:26,337 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 4 [2023-08-03 19:24:26,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2045718658] [2023-08-03 19:24:26,337 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 19:24:26,338 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 19:24:26,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:24:26,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 19:24:26,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-03 19:24:26,347 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 179 out of 402 [2023-08-03 19:24:26,347 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 111 transitions, 385 flow. Second operand has 5 states, 5 states have (on average 181.6) internal successors, (908), 5 states have internal predecessors, (908), 0 states have call successors, (0), 0 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 19:24:26,347 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:24:26,348 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 179 of 402 [2023-08-03 19:24:26,348 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:24:51,981 INFO L124 PetriNetUnfolderBase]: 300254/410342 cut-off events. [2023-08-03 19:24:51,981 INFO L125 PetriNetUnfolderBase]: For 98708/98708 co-relation queries the response was YES. [2023-08-03 19:24:54,511 INFO L83 FinitePrefix]: Finished finitePrefix Result has 861878 conditions, 410342 events. 300254/410342 cut-off events. For 98708/98708 co-relation queries the response was YES. Maximal size of possible extension queue 6671. Compared 2874651 event pairs, 179558 based on Foata normal form. 2/381339 useless extension candidates. Maximal degree in co-relation 335115. Up to 388021 conditions per place. [2023-08-03 19:24:56,279 INFO L140 encePairwiseOnDemand]: 399/402 looper letters, 76 selfloop transitions, 3 changer transitions 0/114 dead transitions. [2023-08-03 19:24:56,279 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 114 transitions, 544 flow [2023-08-03 19:24:56,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 19:24:56,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 19:24:56,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 795 transitions. [2023-08-03 19:24:56,281 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4944029850746269 [2023-08-03 19:24:56,281 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 795 transitions. [2023-08-03 19:24:56,281 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 795 transitions. [2023-08-03 19:24:56,281 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:24:56,282 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 795 transitions. [2023-08-03 19:24:56,283 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 198.75) internal successors, (795), 4 states have internal predecessors, (795), 0 states have call successors, (0), 0 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 19:24:56,285 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 402.0) internal successors, (2010), 5 states have internal predecessors, (2010), 0 states have call successors, (0), 0 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 19:24:56,285 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 402.0) internal successors, (2010), 5 states have internal predecessors, (2010), 0 states have call successors, (0), 0 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 19:24:56,285 INFO L175 Difference]: Start difference. First operand has 92 places, 111 transitions, 385 flow. Second operand 4 states and 795 transitions. [2023-08-03 19:24:56,285 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 114 transitions, 544 flow [2023-08-03 19:24:56,394 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 114 transitions, 542 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 19:24:56,396 INFO L231 Difference]: Finished difference. Result has 94 places, 110 transitions, 380 flow [2023-08-03 19:24:56,396 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=402, PETRI_DIFFERENCE_MINUEND_FLOW=374, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=380, PETRI_PLACES=94, PETRI_TRANSITIONS=110} [2023-08-03 19:24:56,397 INFO L281 CegarLoopForPetriNet]: 87 programPoint places, 7 predicate places. [2023-08-03 19:24:56,397 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 110 transitions, 380 flow [2023-08-03 19:24:56,397 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 181.6) internal successors, (908), 5 states have internal predecessors, (908), 0 states have call successors, (0), 0 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 19:24:56,397 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:24:56,397 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:24:56,402 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-03 19:24:56,601 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 19:24:56,602 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-03 19:24:56,602 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:24:56,602 INFO L85 PathProgramCache]: Analyzing trace with hash 169762985, now seen corresponding path program 1 times [2023-08-03 19:24:56,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:24:56,602 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1356654205] [2023-08-03 19:24:56,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:24:56,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:24:56,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:24:56,649 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 19:24:56,649 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:24:56,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1356654205] [2023-08-03 19:24:56,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1356654205] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:24:56,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [137657350] [2023-08-03 19:24:56,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:24:56,650 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:24:56,650 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:24:56,651 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 19:24:56,653 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 19:24:56,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:24:56,713 INFO L262 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-03 19:24:56,714 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:24:56,729 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 19:24:56,730 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 19:24:56,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [137657350] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 19:24:56,730 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 19:24:56,730 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 6 [2023-08-03 19:24:56,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086769098] [2023-08-03 19:24:56,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 19:24:56,730 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 19:24:56,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:24:56,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 19:24:56,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-03 19:24:56,742 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 179 out of 402 [2023-08-03 19:24:56,742 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 110 transitions, 380 flow. Second operand has 5 states, 5 states have (on average 181.6) internal successors, (908), 5 states have internal predecessors, (908), 0 states have call successors, (0), 0 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 19:24:56,742 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:24:56,743 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 179 of 402 [2023-08-03 19:24:56,743 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:25:21,425 INFO L124 PetriNetUnfolderBase]: 300222/410286 cut-off events. [2023-08-03 19:25:21,426 INFO L125 PetriNetUnfolderBase]: For 98688/98688 co-relation queries the response was YES. [2023-08-03 19:25:23,941 INFO L83 FinitePrefix]: Finished finitePrefix Result has 861757 conditions, 410286 events. 300222/410286 cut-off events. For 98688/98688 co-relation queries the response was YES. Maximal size of possible extension queue 6683. Compared 2874847 event pairs, 120480 based on Foata normal form. 16/381297 useless extension candidates. Maximal degree in co-relation 539039. Up to 387852 conditions per place. [2023-08-03 19:25:25,703 INFO L140 encePairwiseOnDemand]: 398/402 looper letters, 82 selfloop transitions, 4 changer transitions 0/120 dead transitions. [2023-08-03 19:25:25,703 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 120 transitions, 570 flow [2023-08-03 19:25:25,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-03 19:25:25,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-03 19:25:25,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 981 transitions. [2023-08-03 19:25:25,706 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4880597014925373 [2023-08-03 19:25:25,706 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 981 transitions. [2023-08-03 19:25:25,706 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 981 transitions. [2023-08-03 19:25:25,706 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:25:25,706 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 981 transitions. [2023-08-03 19:25:25,708 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 196.2) internal successors, (981), 5 states have internal predecessors, (981), 0 states have call successors, (0), 0 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 19:25:25,710 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 402.0) internal successors, (2412), 6 states have internal predecessors, (2412), 0 states have call successors, (0), 0 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 19:25:25,711 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 402.0) internal successors, (2412), 6 states have internal predecessors, (2412), 0 states have call successors, (0), 0 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 19:25:25,711 INFO L175 Difference]: Start difference. First operand has 94 places, 110 transitions, 380 flow. Second operand 5 states and 981 transitions. [2023-08-03 19:25:25,711 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 120 transitions, 570 flow [2023-08-03 19:25:25,795 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 120 transitions, 554 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-08-03 19:25:25,796 INFO L231 Difference]: Finished difference. Result has 94 places, 110 transitions, 379 flow [2023-08-03 19:25:25,796 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=402, PETRI_DIFFERENCE_MINUEND_FLOW=358, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=379, PETRI_PLACES=94, PETRI_TRANSITIONS=110} [2023-08-03 19:25:25,797 INFO L281 CegarLoopForPetriNet]: 87 programPoint places, 7 predicate places. [2023-08-03 19:25:25,797 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 110 transitions, 379 flow [2023-08-03 19:25:25,797 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 181.6) internal successors, (908), 5 states have internal predecessors, (908), 0 states have call successors, (0), 0 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 19:25:25,797 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:25:25,797 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:25:25,807 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 19:25:26,001 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 19:25:26,001 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-03 19:25:26,001 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:25:26,002 INFO L85 PathProgramCache]: Analyzing trace with hash 1808840971, now seen corresponding path program 1 times [2023-08-03 19:25:26,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:25:26,002 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [196425392] [2023-08-03 19:25:26,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:25:26,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:25:26,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:25:26,054 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-03 19:25:26,055 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:25:26,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [196425392] [2023-08-03 19:25:26,055 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [196425392] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:25:26,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1197220976] [2023-08-03 19:25:26,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:25:26,055 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:25:26,055 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:25:26,056 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 19:25:26,057 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 19:25:26,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:25:26,115 INFO L262 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-03 19:25:26,116 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:25:26,126 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-08-03 19:25:26,126 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 19:25:26,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1197220976] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 19:25:26,127 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 19:25:26,127 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2023-08-03 19:25:26,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855691797] [2023-08-03 19:25:26,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 19:25:26,127 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 19:25:26,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:25:26,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 19:25:26,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-03 19:25:26,134 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 180 out of 402 [2023-08-03 19:25:26,134 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 110 transitions, 379 flow. Second operand has 3 states, 3 states have (on average 185.33333333333334) internal successors, (556), 3 states have internal predecessors, (556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:25:26,134 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:25:26,134 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 180 of 402 [2023-08-03 19:25:26,134 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:25:50,372 INFO L124 PetriNetUnfolderBase]: 298934/408932 cut-off events. [2023-08-03 19:25:50,373 INFO L125 PetriNetUnfolderBase]: For 80774/80774 co-relation queries the response was YES. [2023-08-03 19:25:52,853 INFO L83 FinitePrefix]: Finished finitePrefix Result has 849817 conditions, 408932 events. 298934/408932 cut-off events. For 80774/80774 co-relation queries the response was YES. Maximal size of possible extension queue 7232. Compared 2878503 event pairs, 208958 based on Foata normal form. 0/380293 useless extension candidates. Maximal degree in co-relation 532043. Up to 385901 conditions per place. [2023-08-03 19:25:54,616 INFO L140 encePairwiseOnDemand]: 399/402 looper letters, 80 selfloop transitions, 3 changer transitions 0/117 dead transitions. [2023-08-03 19:25:54,616 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 117 transitions, 559 flow [2023-08-03 19:25:54,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 19:25:54,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 19:25:54,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 621 transitions. [2023-08-03 19:25:54,620 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5149253731343284 [2023-08-03 19:25:54,620 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 621 transitions. [2023-08-03 19:25:54,620 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 621 transitions. [2023-08-03 19:25:54,620 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:25:54,620 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 621 transitions. [2023-08-03 19:25:54,621 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 207.0) internal successors, (621), 3 states have internal predecessors, (621), 0 states have call successors, (0), 0 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 19:25:54,622 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 402.0) internal successors, (1608), 4 states have internal predecessors, (1608), 0 states have call successors, (0), 0 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 19:25:54,622 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 402.0) internal successors, (1608), 4 states have internal predecessors, (1608), 0 states have call successors, (0), 0 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 19:25:54,622 INFO L175 Difference]: Start difference. First operand has 94 places, 110 transitions, 379 flow. Second operand 3 states and 621 transitions. [2023-08-03 19:25:54,623 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 117 transitions, 559 flow [2023-08-03 19:25:54,672 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 117 transitions, 552 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-08-03 19:25:54,674 INFO L231 Difference]: Finished difference. Result has 95 places, 111 transitions, 387 flow [2023-08-03 19:25:54,674 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=402, PETRI_DIFFERENCE_MINUEND_FLOW=372, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=387, PETRI_PLACES=95, PETRI_TRANSITIONS=111} [2023-08-03 19:25:54,674 INFO L281 CegarLoopForPetriNet]: 87 programPoint places, 8 predicate places. [2023-08-03 19:25:54,675 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 111 transitions, 387 flow [2023-08-03 19:25:54,675 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 185.33333333333334) internal successors, (556), 3 states have internal predecessors, (556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:25:54,675 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:25:54,675 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 19:25:54,684 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-08-03 19:25:54,881 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 19:25:54,881 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-03 19:25:54,881 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:25:54,881 INFO L85 PathProgramCache]: Analyzing trace with hash -1774588358, now seen corresponding path program 1 times [2023-08-03 19:25:54,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:25:54,882 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [716100678] [2023-08-03 19:25:54,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:25:54,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:25:54,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:25:54,925 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 19:25:54,926 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:25:54,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [716100678] [2023-08-03 19:25:54,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [716100678] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:25:54,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [123170564] [2023-08-03 19:25:54,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:25:54,926 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:25:54,926 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:25:54,927 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 19:25:54,929 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 19:25:54,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:25:54,992 INFO L262 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-03 19:25:54,993 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:25:55,002 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 19:25:55,003 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 19:25:55,018 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 19:25:55,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [123170564] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 19:25:55,018 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 19:25:55,018 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 5 [2023-08-03 19:25:55,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062880294] [2023-08-03 19:25:55,018 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 19:25:55,018 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 19:25:55,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:25:55,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 19:25:55,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-03 19:25:55,028 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 179 out of 402 [2023-08-03 19:25:55,029 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 111 transitions, 387 flow. Second operand has 5 states, 5 states have (on average 182.6) internal successors, (913), 5 states have internal predecessors, (913), 0 states have call successors, (0), 0 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 19:25:55,029 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:25:55,029 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 179 of 402 [2023-08-03 19:25:55,029 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:26:19,817 INFO L124 PetriNetUnfolderBase]: 295326/403348 cut-off events. [2023-08-03 19:26:19,817 INFO L125 PetriNetUnfolderBase]: For 79682/79682 co-relation queries the response was YES. [2023-08-03 19:26:22,616 INFO L83 FinitePrefix]: Finished finitePrefix Result has 839150 conditions, 403348 events. 295326/403348 cut-off events. For 79682/79682 co-relation queries the response was YES. Maximal size of possible extension queue 6879. Compared 2821610 event pairs, 179226 based on Foata normal form. 8/375157 useless extension candidates. Maximal degree in co-relation 527269. Up to 381453 conditions per place. [2023-08-03 19:26:24,331 INFO L140 encePairwiseOnDemand]: 399/402 looper letters, 81 selfloop transitions, 3 changer transitions 0/118 dead transitions. [2023-08-03 19:26:24,331 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 118 transitions, 564 flow [2023-08-03 19:26:24,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 19:26:24,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 19:26:24,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 799 transitions. [2023-08-03 19:26:24,333 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4968905472636816 [2023-08-03 19:26:24,333 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 799 transitions. [2023-08-03 19:26:24,333 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 799 transitions. [2023-08-03 19:26:24,334 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:26:24,334 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 799 transitions. [2023-08-03 19:26:24,335 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 199.75) internal successors, (799), 4 states have internal predecessors, (799), 0 states have call successors, (0), 0 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 19:26:24,336 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 402.0) internal successors, (2010), 5 states have internal predecessors, (2010), 0 states have call successors, (0), 0 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 19:26:24,337 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 402.0) internal successors, (2010), 5 states have internal predecessors, (2010), 0 states have call successors, (0), 0 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 19:26:24,337 INFO L175 Difference]: Start difference. First operand has 95 places, 111 transitions, 387 flow. Second operand 4 states and 799 transitions. [2023-08-03 19:26:24,337 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 118 transitions, 564 flow [2023-08-03 19:26:24,375 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 118 transitions, 562 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 19:26:24,376 INFO L231 Difference]: Finished difference. Result has 97 places, 110 transitions, 382 flow [2023-08-03 19:26:24,377 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=402, PETRI_DIFFERENCE_MINUEND_FLOW=376, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=382, PETRI_PLACES=97, PETRI_TRANSITIONS=110} [2023-08-03 19:26:24,377 INFO L281 CegarLoopForPetriNet]: 87 programPoint places, 10 predicate places. [2023-08-03 19:26:24,377 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 110 transitions, 382 flow [2023-08-03 19:26:24,377 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 182.6) internal successors, (913), 5 states have internal predecessors, (913), 0 states have call successors, (0), 0 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 19:26:24,377 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:26:24,378 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 19:26:24,381 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 19:26:24,580 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 19:26:24,580 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-03 19:26:24,581 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:26:24,581 INFO L85 PathProgramCache]: Analyzing trace with hash 1976486677, now seen corresponding path program 1 times [2023-08-03 19:26:24,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:26:24,581 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1318654365] [2023-08-03 19:26:24,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:26:24,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:26:24,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:26:24,633 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 19:26:24,633 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:26:24,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1318654365] [2023-08-03 19:26:24,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1318654365] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:26:24,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1191664364] [2023-08-03 19:26:24,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:26:24,634 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:26:24,634 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:26:24,636 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 19:26:24,638 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 19:26:24,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:26:24,706 INFO L262 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-03 19:26:24,707 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:26:24,721 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 19:26:24,721 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 19:26:24,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1191664364] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 19:26:24,721 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 19:26:24,721 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 6 [2023-08-03 19:26:24,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575524459] [2023-08-03 19:26:24,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 19:26:24,721 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 19:26:24,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:26:24,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 19:26:24,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-03 19:26:24,731 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 179 out of 402 [2023-08-03 19:26:24,732 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 110 transitions, 382 flow. Second operand has 5 states, 5 states have (on average 182.6) internal successors, (913), 5 states have internal predecessors, (913), 0 states have call successors, (0), 0 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 19:26:24,732 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:26:24,732 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 179 of 402 [2023-08-03 19:26:24,732 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:26:48,769 INFO L124 PetriNetUnfolderBase]: 295134/403060 cut-off events. [2023-08-03 19:26:48,770 INFO L125 PetriNetUnfolderBase]: For 79614/79614 co-relation queries the response was YES. [2023-08-03 19:26:51,464 INFO L83 FinitePrefix]: Finished finitePrefix Result has 838538 conditions, 403060 events. 295134/403060 cut-off events. For 79614/79614 co-relation queries the response was YES. Maximal size of possible extension queue 6884. Compared 2822139 event pairs, 63598 based on Foata normal form. 64/374925 useless extension candidates. Maximal degree in co-relation 526995. Up to 380484 conditions per place. [2023-08-03 19:26:53,073 INFO L140 encePairwiseOnDemand]: 398/402 looper letters, 89 selfloop transitions, 4 changer transitions 0/126 dead transitions. [2023-08-03 19:26:53,073 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 126 transitions, 598 flow [2023-08-03 19:26:53,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-03 19:26:53,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-03 19:26:53,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 987 transitions. [2023-08-03 19:26:53,075 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.491044776119403 [2023-08-03 19:26:53,075 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 987 transitions. [2023-08-03 19:26:53,076 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 987 transitions. [2023-08-03 19:26:53,076 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:26:53,076 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 987 transitions. [2023-08-03 19:26:53,077 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 197.4) internal successors, (987), 5 states have internal predecessors, (987), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:26:53,079 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 402.0) internal successors, (2412), 6 states have internal predecessors, (2412), 0 states have call successors, (0), 0 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 19:26:53,079 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 402.0) internal successors, (2412), 6 states have internal predecessors, (2412), 0 states have call successors, (0), 0 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 19:26:53,079 INFO L175 Difference]: Start difference. First operand has 97 places, 110 transitions, 382 flow. Second operand 5 states and 987 transitions. [2023-08-03 19:26:53,079 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 126 transitions, 598 flow [2023-08-03 19:26:53,112 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 126 transitions, 582 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-08-03 19:26:53,113 INFO L231 Difference]: Finished difference. Result has 97 places, 110 transitions, 381 flow [2023-08-03 19:26:53,113 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=402, PETRI_DIFFERENCE_MINUEND_FLOW=360, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=381, PETRI_PLACES=97, PETRI_TRANSITIONS=110} [2023-08-03 19:26:53,113 INFO L281 CegarLoopForPetriNet]: 87 programPoint places, 10 predicate places. [2023-08-03 19:26:53,114 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 110 transitions, 381 flow [2023-08-03 19:26:53,114 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 182.6) internal successors, (913), 5 states have internal predecessors, (913), 0 states have call successors, (0), 0 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 19:26:53,114 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:26:53,114 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] [2023-08-03 19:26:53,118 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 19:26:53,316 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 19:26:53,317 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-03 19:26:53,317 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:26:53,317 INFO L85 PathProgramCache]: Analyzing trace with hash 818071932, now seen corresponding path program 1 times [2023-08-03 19:26:53,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:26:53,318 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1811245147] [2023-08-03 19:26:53,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:26:53,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:26:53,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:26:53,360 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-08-03 19:26:53,361 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:26:53,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1811245147] [2023-08-03 19:26:53,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1811245147] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:26:53,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1058479516] [2023-08-03 19:26:53,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:26:53,361 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:26:53,361 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:26:53,362 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 19:26:53,366 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 19:26:53,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:26:53,438 INFO L262 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-03 19:26:53,439 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:26:53,446 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-08-03 19:26:53,446 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 19:26:53,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1058479516] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 19:26:53,447 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 19:26:53,447 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2023-08-03 19:26:53,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484838732] [2023-08-03 19:26:53,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 19:26:53,447 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 19:26:53,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:26:53,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 19:26:53,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-03 19:26:53,453 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 180 out of 402 [2023-08-03 19:26:53,454 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 110 transitions, 381 flow. Second operand has 3 states, 3 states have (on average 186.66666666666666) internal successors, (560), 3 states have internal predecessors, (560), 0 states have call successors, (0), 0 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 19:26:53,454 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:26:53,454 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 180 of 402 [2023-08-03 19:26:53,454 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:27:18,689 INFO L124 PetriNetUnfolderBase]: 295038/408028 cut-off events. [2023-08-03 19:27:18,689 INFO L125 PetriNetUnfolderBase]: For 47190/47190 co-relation queries the response was YES. [2023-08-03 19:27:21,270 INFO L83 FinitePrefix]: Finished finitePrefix Result has 834955 conditions, 408028 events. 295038/408028 cut-off events. For 47190/47190 co-relation queries the response was YES. Maximal size of possible extension queue 7387. Compared 2944772 event pairs, 208050 based on Foata normal form. 0/381191 useless extension candidates. Maximal degree in co-relation 524717. Up to 379741 conditions per place. [2023-08-03 19:27:23,003 INFO L140 encePairwiseOnDemand]: 399/402 looper letters, 83 selfloop transitions, 3 changer transitions 0/119 dead transitions. [2023-08-03 19:27:23,003 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 119 transitions, 571 flow [2023-08-03 19:27:23,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 19:27:23,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 19:27:23,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 623 transitions. [2023-08-03 19:27:23,005 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5165837479270315 [2023-08-03 19:27:23,005 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 623 transitions. [2023-08-03 19:27:23,005 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 623 transitions. [2023-08-03 19:27:23,005 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:27:23,005 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 623 transitions. [2023-08-03 19:27:23,006 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 207.66666666666666) internal successors, (623), 3 states have internal predecessors, (623), 0 states have call successors, (0), 0 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 19:27:23,007 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 402.0) internal successors, (1608), 4 states have internal predecessors, (1608), 0 states have call successors, (0), 0 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 19:27:23,007 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 402.0) internal successors, (1608), 4 states have internal predecessors, (1608), 0 states have call successors, (0), 0 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 19:27:23,008 INFO L175 Difference]: Start difference. First operand has 97 places, 110 transitions, 381 flow. Second operand 3 states and 623 transitions. [2023-08-03 19:27:23,008 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 119 transitions, 571 flow [2023-08-03 19:27:23,057 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 119 transitions, 564 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-08-03 19:27:23,059 INFO L231 Difference]: Finished difference. Result has 98 places, 111 transitions, 389 flow [2023-08-03 19:27:23,059 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=402, PETRI_DIFFERENCE_MINUEND_FLOW=374, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=389, PETRI_PLACES=98, PETRI_TRANSITIONS=111} [2023-08-03 19:27:23,059 INFO L281 CegarLoopForPetriNet]: 87 programPoint places, 11 predicate places. [2023-08-03 19:27:23,059 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 111 transitions, 389 flow [2023-08-03 19:27:23,060 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 186.66666666666666) internal successors, (560), 3 states have internal predecessors, (560), 0 states have call successors, (0), 0 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 19:27:23,060 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:27:23,060 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] [2023-08-03 19:27:23,063 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 19:27:23,263 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 19:27:23,263 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-03 19:27:23,264 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:27:23,264 INFO L85 PathProgramCache]: Analyzing trace with hash -518333327, now seen corresponding path program 1 times [2023-08-03 19:27:23,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:27:23,264 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [557773249] [2023-08-03 19:27:23,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:27:23,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:27:23,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:27:23,306 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 19:27:23,306 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:27:23,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [557773249] [2023-08-03 19:27:23,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [557773249] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:27:23,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1506243368] [2023-08-03 19:27:23,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:27:23,306 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:27:23,307 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:27:23,308 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 19:27:23,309 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 19:27:23,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:27:23,379 INFO L262 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-03 19:27:23,380 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:27:23,384 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 19:27:23,385 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 19:27:23,385 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1506243368] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 19:27:23,385 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 19:27:23,385 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2023-08-03 19:27:23,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1825763631] [2023-08-03 19:27:23,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 19:27:23,385 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 19:27:23,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:27:23,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 19:27:23,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-03 19:27:23,392 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 180 out of 402 [2023-08-03 19:27:23,392 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 111 transitions, 389 flow. Second operand has 3 states, 3 states have (on average 187.66666666666666) internal successors, (563), 3 states have internal predecessors, (563), 0 states have call successors, (0), 0 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 19:27:23,392 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:27:23,392 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 180 of 402 [2023-08-03 19:27:23,392 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:27:48,345 INFO L124 PetriNetUnfolderBase]: 279966/387708 cut-off events. [2023-08-03 19:27:48,346 INFO L125 PetriNetUnfolderBase]: For 45078/45078 co-relation queries the response was YES. [2023-08-03 19:27:51,350 INFO L83 FinitePrefix]: Finished finitePrefix Result has 796476 conditions, 387708 events. 279966/387708 cut-off events. For 45078/45078 co-relation queries the response was YES. Maximal size of possible extension queue 8743. Compared 2786696 event pairs, 210016 based on Foata normal form. 0/362471 useless extension candidates. Maximal degree in co-relation 505413. Up to 348893 conditions per place. [2023-08-03 19:27:53,094 INFO L140 encePairwiseOnDemand]: 399/402 looper letters, 94 selfloop transitions, 2 changer transitions 0/129 dead transitions. [2023-08-03 19:27:53,095 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 129 transitions, 635 flow [2023-08-03 19:27:53,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 19:27:53,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 19:27:53,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 632 transitions. [2023-08-03 19:27:53,096 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5240464344941956 [2023-08-03 19:27:53,096 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 632 transitions. [2023-08-03 19:27:53,096 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 632 transitions. [2023-08-03 19:27:53,096 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:27:53,096 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 632 transitions. [2023-08-03 19:27:53,108 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 210.66666666666666) internal successors, (632), 3 states have internal predecessors, (632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:27:53,109 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 402.0) internal successors, (1608), 4 states have internal predecessors, (1608), 0 states have call successors, (0), 0 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 19:27:53,110 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 402.0) internal successors, (1608), 4 states have internal predecessors, (1608), 0 states have call successors, (0), 0 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 19:27:53,110 INFO L175 Difference]: Start difference. First operand has 98 places, 111 transitions, 389 flow. Second operand 3 states and 632 transitions. [2023-08-03 19:27:53,110 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 129 transitions, 635 flow [2023-08-03 19:27:53,155 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 129 transitions, 632 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 19:27:53,156 INFO L231 Difference]: Finished difference. Result has 100 places, 112 transitions, 398 flow [2023-08-03 19:27:53,157 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=402, PETRI_DIFFERENCE_MINUEND_FLOW=386, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=398, PETRI_PLACES=100, PETRI_TRANSITIONS=112} [2023-08-03 19:27:53,157 INFO L281 CegarLoopForPetriNet]: 87 programPoint places, 13 predicate places. [2023-08-03 19:27:53,158 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 112 transitions, 398 flow [2023-08-03 19:27:53,158 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 187.66666666666666) internal successors, (563), 3 states have internal predecessors, (563), 0 states have call successors, (0), 0 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 19:27:53,158 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:27:53,158 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:27:53,162 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-08-03 19:27:53,362 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 19:27:53,363 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-03 19:27:53,363 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:27:53,363 INFO L85 PathProgramCache]: Analyzing trace with hash 1651192897, now seen corresponding path program 1 times [2023-08-03 19:27:53,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:27:53,363 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1990909549] [2023-08-03 19:27:53,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:27:53,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:27:53,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:27:53,466 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 19:27:53,466 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:27:53,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1990909549] [2023-08-03 19:27:53,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1990909549] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:27:53,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1762550815] [2023-08-03 19:27:53,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:27:53,466 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:27:53,466 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:27:53,481 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 19:27:53,513 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 19:27:53,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:27:53,597 INFO L262 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-03 19:27:53,599 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:27:53,643 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 19:27:53,643 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 19:27:53,654 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 19:27:53,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1762550815] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 19:27:53,654 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 19:27:53,654 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 5 [2023-08-03 19:27:53,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035247444] [2023-08-03 19:27:53,655 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 19:27:53,656 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 19:27:53,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:27:53,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 19:27:53,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-03 19:27:53,668 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 179 out of 402 [2023-08-03 19:27:53,669 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 112 transitions, 398 flow. Second operand has 5 states, 5 states have (on average 183.6) internal successors, (918), 5 states have internal predecessors, (918), 0 states have call successors, (0), 0 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 19:27:53,669 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:27:53,669 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 179 of 402 [2023-08-03 19:27:53,669 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:28:18,644 INFO L124 PetriNetUnfolderBase]: 274334/379548 cut-off events. [2023-08-03 19:28:18,645 INFO L125 PetriNetUnfolderBase]: For 52199/52199 co-relation queries the response was YES. [2023-08-03 19:28:21,585 INFO L83 FinitePrefix]: Finished finitePrefix Result has 794591 conditions, 379548 events. 274334/379548 cut-off events. For 52199/52199 co-relation queries the response was YES. Maximal size of possible extension queue 8163. Compared 2715275 event pairs, 168814 based on Foata normal form. 32/360648 useless extension candidates. Maximal degree in co-relation 506977. Up to 355165 conditions per place. [2023-08-03 19:28:23,376 INFO L140 encePairwiseOnDemand]: 399/402 looper letters, 87 selfloop transitions, 3 changer transitions 0/123 dead transitions. [2023-08-03 19:28:23,377 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 123 transitions, 596 flow [2023-08-03 19:28:23,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 19:28:23,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 19:28:23,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 803 transitions. [2023-08-03 19:28:23,384 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4993781094527363 [2023-08-03 19:28:23,384 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 803 transitions. [2023-08-03 19:28:23,384 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 803 transitions. [2023-08-03 19:28:23,385 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:28:23,385 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 803 transitions. [2023-08-03 19:28:23,392 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 200.75) internal successors, (803), 4 states have internal predecessors, (803), 0 states have call successors, (0), 0 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 19:28:23,393 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 402.0) internal successors, (2010), 5 states have internal predecessors, (2010), 0 states have call successors, (0), 0 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 19:28:23,394 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 402.0) internal successors, (2010), 5 states have internal predecessors, (2010), 0 states have call successors, (0), 0 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 19:28:23,394 INFO L175 Difference]: Start difference. First operand has 100 places, 112 transitions, 398 flow. Second operand 4 states and 803 transitions. [2023-08-03 19:28:23,394 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 123 transitions, 596 flow [2023-08-03 19:28:23,470 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 123 transitions, 594 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 19:28:23,471 INFO L231 Difference]: Finished difference. Result has 102 places, 111 transitions, 394 flow [2023-08-03 19:28:23,471 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=402, PETRI_DIFFERENCE_MINUEND_FLOW=388, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=394, PETRI_PLACES=102, PETRI_TRANSITIONS=111} [2023-08-03 19:28:23,472 INFO L281 CegarLoopForPetriNet]: 87 programPoint places, 15 predicate places. [2023-08-03 19:28:23,472 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 111 transitions, 394 flow [2023-08-03 19:28:23,473 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 183.6) internal successors, (918), 5 states have internal predecessors, (918), 0 states have call successors, (0), 0 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 19:28:23,473 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:28:23,473 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:28:23,477 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2023-08-03 19:28:23,677 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 19:28:23,677 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-03 19:28:23,677 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:28:23,677 INFO L85 PathProgramCache]: Analyzing trace with hash -1102452598, now seen corresponding path program 1 times [2023-08-03 19:28:23,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:28:23,678 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1915833354] [2023-08-03 19:28:23,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:28:23,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:28:23,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:28:23,778 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-08-03 19:28:23,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:28:23,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1915833354] [2023-08-03 19:28:23,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1915833354] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:28:23,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1511938143] [2023-08-03 19:28:23,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:28:23,779 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:28:23,779 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:28:23,780 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 19:28:23,809 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 19:28:23,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:28:23,895 INFO L262 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-03 19:28:23,896 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:28:23,915 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-08-03 19:28:23,915 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 19:28:23,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1511938143] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 19:28:23,916 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 19:28:23,916 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 6 [2023-08-03 19:28:23,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283326132] [2023-08-03 19:28:23,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 19:28:23,916 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 19:28:23,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:28:23,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 19:28:23,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-03 19:28:23,927 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 179 out of 402 [2023-08-03 19:28:23,927 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 111 transitions, 394 flow. Second operand has 5 states, 5 states have (on average 183.6) internal successors, (918), 5 states have internal predecessors, (918), 0 states have call successors, (0), 0 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 19:28:23,927 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:28:23,927 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 179 of 402 [2023-08-03 19:28:23,927 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:28:47,281 INFO L124 PetriNetUnfolderBase]: 273310/378140 cut-off events. [2023-08-03 19:28:47,281 INFO L125 PetriNetUnfolderBase]: For 50391/50391 co-relation queries the response was YES. [2023-08-03 19:28:49,678 INFO L83 FinitePrefix]: Finished finitePrefix Result has 790287 conditions, 378140 events. 273310/378140 cut-off events. For 50391/50391 co-relation queries the response was YES. Maximal size of possible extension queue 8163. Compared 2705354 event pairs, 10324 based on Foata normal form. 256/359464 useless extension candidates. Maximal degree in co-relation 504857. Up to 350116 conditions per place. [2023-08-03 19:28:51,175 INFO L140 encePairwiseOnDemand]: 398/402 looper letters, 97 selfloop transitions, 4 changer transitions 0/133 dead transitions. [2023-08-03 19:28:51,176 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 133 transitions, 640 flow [2023-08-03 19:28:51,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-03 19:28:51,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-03 19:28:51,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 993 transitions. [2023-08-03 19:28:51,178 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49402985074626865 [2023-08-03 19:28:51,178 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 993 transitions. [2023-08-03 19:28:51,178 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 993 transitions. [2023-08-03 19:28:51,178 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:28:51,178 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 993 transitions. [2023-08-03 19:28:51,179 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 198.6) internal successors, (993), 5 states have internal predecessors, (993), 0 states have call successors, (0), 0 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 19:28:51,181 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 402.0) internal successors, (2412), 6 states have internal predecessors, (2412), 0 states have call successors, (0), 0 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 19:28:51,182 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 402.0) internal successors, (2412), 6 states have internal predecessors, (2412), 0 states have call successors, (0), 0 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 19:28:51,182 INFO L175 Difference]: Start difference. First operand has 102 places, 111 transitions, 394 flow. Second operand 5 states and 993 transitions. [2023-08-03 19:28:51,182 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 133 transitions, 640 flow [2023-08-03 19:28:51,238 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 133 transitions, 624 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-08-03 19:28:51,239 INFO L231 Difference]: Finished difference. Result has 102 places, 111 transitions, 395 flow [2023-08-03 19:28:51,239 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=402, PETRI_DIFFERENCE_MINUEND_FLOW=372, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=395, PETRI_PLACES=102, PETRI_TRANSITIONS=111} [2023-08-03 19:28:51,240 INFO L281 CegarLoopForPetriNet]: 87 programPoint places, 15 predicate places. [2023-08-03 19:28:51,240 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 111 transitions, 395 flow [2023-08-03 19:28:51,240 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 183.6) internal successors, (918), 5 states have internal predecessors, (918), 0 states have call successors, (0), 0 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 19:28:51,240 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:28:51,240 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] [2023-08-03 19:28:51,245 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 19:28:51,444 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 19:28:51,445 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-03 19:28:51,445 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:28:51,445 INFO L85 PathProgramCache]: Analyzing trace with hash -1776508371, now seen corresponding path program 1 times [2023-08-03 19:28:51,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:28:51,445 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1590286123] [2023-08-03 19:28:51,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:28:51,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:28:51,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:28:51,505 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2023-08-03 19:28:51,505 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:28:51,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1590286123] [2023-08-03 19:28:51,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1590286123] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:28:51,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1861923574] [2023-08-03 19:28:51,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:28:51,505 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:28:51,506 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:28:51,507 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 19:28:51,508 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 19:28:51,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:28:51,591 INFO L262 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-03 19:28:51,592 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:28:51,599 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-08-03 19:28:51,599 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 19:28:51,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1861923574] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 19:28:51,599 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 19:28:51,599 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2023-08-03 19:28:51,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076298498] [2023-08-03 19:28:51,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 19:28:51,600 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 19:28:51,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:28:51,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 19:28:51,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-03 19:28:51,608 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 180 out of 402 [2023-08-03 19:28:51,608 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 111 transitions, 395 flow. Second operand has 3 states, 3 states have (on average 189.33333333333334) internal successors, (568), 3 states have internal predecessors, (568), 0 states have call successors, (0), 0 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 19:28:51,608 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:28:51,608 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 180 of 402 [2023-08-03 19:28:51,608 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:29:17,078 INFO L124 PetriNetUnfolderBase]: 278365/388447 cut-off events. [2023-08-03 19:29:17,078 INFO L125 PetriNetUnfolderBase]: For 48135/48135 co-relation queries the response was YES. [2023-08-03 19:29:19,816 INFO L83 FinitePrefix]: Finished finitePrefix Result has 806661 conditions, 388447 events. 278365/388447 cut-off events. For 48135/48135 co-relation queries the response was YES. Maximal size of possible extension queue 9160. Compared 2851704 event pairs, 180364 based on Foata normal form. 0/372587 useless extension candidates. Maximal degree in co-relation 526830. Up to 290013 conditions per place. [2023-08-03 19:29:21,331 INFO L140 encePairwiseOnDemand]: 399/402 looper letters, 95 selfloop transitions, 2 changer transitions 0/129 dead transitions. [2023-08-03 19:29:21,331 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 129 transitions, 641 flow [2023-08-03 19:29:21,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 19:29:21,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 19:29:21,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 632 transitions. [2023-08-03 19:29:21,332 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5240464344941956 [2023-08-03 19:29:21,332 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 632 transitions. [2023-08-03 19:29:21,332 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 632 transitions. [2023-08-03 19:29:21,333 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:29:21,333 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 632 transitions. [2023-08-03 19:29:21,333 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 210.66666666666666) internal successors, (632), 3 states have internal predecessors, (632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:29:21,335 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 402.0) internal successors, (1608), 4 states have internal predecessors, (1608), 0 states have call successors, (0), 0 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 19:29:21,335 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 402.0) internal successors, (1608), 4 states have internal predecessors, (1608), 0 states have call successors, (0), 0 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 19:29:21,335 INFO L175 Difference]: Start difference. First operand has 102 places, 111 transitions, 395 flow. Second operand 3 states and 632 transitions. [2023-08-03 19:29:21,335 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 129 transitions, 641 flow [2023-08-03 19:29:21,397 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 129 transitions, 634 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-08-03 19:29:21,398 INFO L231 Difference]: Finished difference. Result has 103 places, 112 transitions, 400 flow [2023-08-03 19:29:21,399 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=402, PETRI_DIFFERENCE_MINUEND_FLOW=388, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=400, PETRI_PLACES=103, PETRI_TRANSITIONS=112} [2023-08-03 19:29:21,399 INFO L281 CegarLoopForPetriNet]: 87 programPoint places, 16 predicate places. [2023-08-03 19:29:21,399 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 112 transitions, 400 flow [2023-08-03 19:29:21,399 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 189.33333333333334) internal successors, (568), 3 states have internal predecessors, (568), 0 states have call successors, (0), 0 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 19:29:21,399 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:29:21,399 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, 1] [2023-08-03 19:29:21,405 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 19:29:21,604 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 19:29:21,604 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-03 19:29:21,604 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:29:21,604 INFO L85 PathProgramCache]: Analyzing trace with hash 426421926, now seen corresponding path program 1 times [2023-08-03 19:29:21,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:29:21,605 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1776388161] [2023-08-03 19:29:21,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:29:21,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:29:21,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:29:21,676 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 19:29:21,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:29:21,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1776388161] [2023-08-03 19:29:21,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1776388161] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:29:21,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [67594523] [2023-08-03 19:29:21,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:29:21,677 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:29:21,677 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:29:21,681 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 19:29:21,683 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 19:29:21,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:29:21,772 INFO L262 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-03 19:29:21,773 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:29:21,777 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-08-03 19:29:21,777 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 19:29:21,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [67594523] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 19:29:21,777 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 19:29:21,777 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2023-08-03 19:29:21,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1432833029] [2023-08-03 19:29:21,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 19:29:21,778 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 19:29:21,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:29:21,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 19:29:21,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-03 19:29:21,784 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 180 out of 402 [2023-08-03 19:29:21,794 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 112 transitions, 400 flow. Second operand has 3 states, 3 states have (on average 190.66666666666666) internal successors, (572), 3 states have internal predecessors, (572), 0 states have call successors, (0), 0 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 19:29:21,794 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:29:21,794 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 180 of 402 [2023-08-03 19:29:21,794 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:29:48,612 INFO L124 PetriNetUnfolderBase]: 274460/385954 cut-off events. [2023-08-03 19:29:48,612 INFO L125 PetriNetUnfolderBase]: For 62806/62806 co-relation queries the response was YES. [2023-08-03 19:29:51,742 INFO L83 FinitePrefix]: Finished finitePrefix Result has 828028 conditions, 385954 events. 274460/385954 cut-off events. For 62806/62806 co-relation queries the response was YES. Maximal size of possible extension queue 7453. Compared 2873976 event pairs, 193845 based on Foata normal form. 0/378959 useless extension candidates. Maximal degree in co-relation 548817. Up to 305791 conditions per place. [2023-08-03 19:29:53,250 INFO L140 encePairwiseOnDemand]: 399/402 looper letters, 96 selfloop transitions, 2 changer transitions 0/130 dead transitions. [2023-08-03 19:29:53,250 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 130 transitions, 648 flow [2023-08-03 19:29:53,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 19:29:53,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 19:29:53,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 632 transitions. [2023-08-03 19:29:53,251 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5240464344941956 [2023-08-03 19:29:53,251 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 632 transitions. [2023-08-03 19:29:53,251 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 632 transitions. [2023-08-03 19:29:53,252 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:29:53,252 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 632 transitions. [2023-08-03 19:29:53,253 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 210.66666666666666) internal successors, (632), 3 states have internal predecessors, (632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:29:53,254 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 402.0) internal successors, (1608), 4 states have internal predecessors, (1608), 0 states have call successors, (0), 0 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 19:29:53,255 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 402.0) internal successors, (1608), 4 states have internal predecessors, (1608), 0 states have call successors, (0), 0 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 19:29:53,255 INFO L175 Difference]: Start difference. First operand has 103 places, 112 transitions, 400 flow. Second operand 3 states and 632 transitions. [2023-08-03 19:29:53,255 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 130 transitions, 648 flow [2023-08-03 19:30:01,322 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 130 transitions, 646 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 19:30:01,323 INFO L231 Difference]: Finished difference. Result has 105 places, 113 transitions, 410 flow [2023-08-03 19:30:01,323 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=402, PETRI_DIFFERENCE_MINUEND_FLOW=398, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=410, PETRI_PLACES=105, PETRI_TRANSITIONS=113} [2023-08-03 19:30:01,324 INFO L281 CegarLoopForPetriNet]: 87 programPoint places, 18 predicate places. [2023-08-03 19:30:01,324 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 113 transitions, 410 flow [2023-08-03 19:30:01,324 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 190.66666666666666) internal successors, (572), 3 states have internal predecessors, (572), 0 states have call successors, (0), 0 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 19:30:01,324 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:30:01,324 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, 1, 1, 1, 1, 1, 1] [2023-08-03 19:30:01,330 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 19:30:01,524 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 19:30:01,525 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 2 more)] === [2023-08-03 19:30:01,525 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:30:01,525 INFO L85 PathProgramCache]: Analyzing trace with hash -2048203801, now seen corresponding path program 1 times [2023-08-03 19:30:01,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:30:01,525 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1693057169] [2023-08-03 19:30:01,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:30:01,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:30:01,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:30:01,564 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-08-03 19:30:01,565 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:30:01,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1693057169] [2023-08-03 19:30:01,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1693057169] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:30:01,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [292442142] [2023-08-03 19:30:01,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:30:01,565 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:30:01,565 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:30:01,566 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 19:30:01,568 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 19:30:01,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:30:01,659 INFO L262 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-03 19:30:01,660 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:30:01,671 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-08-03 19:30:01,671 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 19:30:01,671 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [292442142] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 19:30:01,671 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 19:30:01,671 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2023-08-03 19:30:01,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [507472790] [2023-08-03 19:30:01,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 19:30:01,671 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 19:30:01,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:30:01,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 19:30:01,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-03 19:30:01,679 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 180 out of 402 [2023-08-03 19:30:01,679 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 113 transitions, 410 flow. Second operand has 3 states, 3 states have (on average 192.0) internal successors, (576), 3 states have internal predecessors, (576), 0 states have call successors, (0), 0 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 19:30:01,679 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:30:01,680 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 180 of 402 [2023-08-03 19:30:01,680 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:30:30,569 INFO L124 PetriNetUnfolderBase]: 278171/392421 cut-off events. [2023-08-03 19:30:30,569 INFO L125 PetriNetUnfolderBase]: For 68484/68484 co-relation queries the response was YES. [2023-08-03 19:30:33,706 INFO L83 FinitePrefix]: Finished finitePrefix Result has 854066 conditions, 392421 events. 278171/392421 cut-off events. For 68484/68484 co-relation queries the response was YES. Maximal size of possible extension queue 7213. Compared 2937158 event pairs, 213150 based on Foata normal form. 0/390707 useless extension candidates. Maximal degree in co-relation 569902. Up to 335873 conditions per place. [2023-08-03 19:30:35,169 INFO L140 encePairwiseOnDemand]: 399/402 looper letters, 97 selfloop transitions, 2 changer transitions 0/131 dead transitions. [2023-08-03 19:30:35,169 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 131 transitions, 660 flow [2023-08-03 19:30:35,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 19:30:35,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 19:30:35,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 632 transitions. [2023-08-03 19:30:35,171 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5240464344941956 [2023-08-03 19:30:35,171 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 632 transitions. [2023-08-03 19:30:35,171 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 632 transitions. [2023-08-03 19:30:35,171 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:30:35,171 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 632 transitions. [2023-08-03 19:30:35,172 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 210.66666666666666) internal successors, (632), 3 states have internal predecessors, (632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:30:35,173 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 402.0) internal successors, (1608), 4 states have internal predecessors, (1608), 0 states have call successors, (0), 0 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 19:30:35,173 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 402.0) internal successors, (1608), 4 states have internal predecessors, (1608), 0 states have call successors, (0), 0 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 19:30:35,173 INFO L175 Difference]: Start difference. First operand has 105 places, 113 transitions, 410 flow. Second operand 3 states and 632 transitions. [2023-08-03 19:30:35,173 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 131 transitions, 660 flow [2023-08-03 19:31:03,561 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 131 transitions, 658 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 19:31:03,562 INFO L231 Difference]: Finished difference. Result has 107 places, 114 transitions, 420 flow [2023-08-03 19:31:03,562 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=402, PETRI_DIFFERENCE_MINUEND_FLOW=408, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=420, PETRI_PLACES=107, PETRI_TRANSITIONS=114} [2023-08-03 19:31:03,563 INFO L281 CegarLoopForPetriNet]: 87 programPoint places, 20 predicate places. [2023-08-03 19:31:03,563 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 114 transitions, 420 flow [2023-08-03 19:31:03,563 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 192.0) internal successors, (576), 3 states have internal predecessors, (576), 0 states have call successors, (0), 0 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 19:31:03,563 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:31:03,563 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:31:03,567 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2023-08-03 19:31:03,763 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 19:31:03,764 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 2 more)] === [2023-08-03 19:31:03,764 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:31:03,764 INFO L85 PathProgramCache]: Analyzing trace with hash 1436411960, now seen corresponding path program 1 times [2023-08-03 19:31:03,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:31:03,764 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1204651824] [2023-08-03 19:31:03,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:31:03,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:31:03,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:31:03,822 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-08-03 19:31:03,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:31:03,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1204651824] [2023-08-03 19:31:03,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1204651824] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:31:03,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1375168992] [2023-08-03 19:31:03,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:31:03,822 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:31:03,822 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:31:03,825 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 19:31:03,827 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 19:31:03,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:31:03,916 INFO L262 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-03 19:31:03,917 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:31:03,926 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-08-03 19:31:03,927 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 19:31:03,948 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-08-03 19:31:03,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1375168992] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 19:31:03,948 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 19:31:03,948 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 5 [2023-08-03 19:31:03,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1290295892] [2023-08-03 19:31:03,948 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 19:31:03,949 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 19:31:03,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:31:03,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 19:31:03,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-03 19:31:03,959 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 179 out of 402 [2023-08-03 19:31:03,960 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 114 transitions, 420 flow. Second operand has 5 states, 5 states have (on average 187.8) internal successors, (939), 5 states have internal predecessors, (939), 0 states have call successors, (0), 0 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 19:31:03,960 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:31:03,960 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 179 of 402 [2023-08-03 19:31:03,960 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:31:33,691 INFO L124 PetriNetUnfolderBase]: 275483/388581 cut-off events. [2023-08-03 19:31:33,691 INFO L125 PetriNetUnfolderBase]: For 67174/67174 co-relation queries the response was YES. [2023-08-03 19:31:36,617 INFO L83 FinitePrefix]: Finished finitePrefix Result has 851415 conditions, 388581 events. 275483/388581 cut-off events. For 67174/67174 co-relation queries the response was YES. Maximal size of possible extension queue 7394. Compared 2898654 event pairs, 175870 based on Foata normal form. 128/388692 useless extension candidates. Maximal degree in co-relation 728932. Up to 361699 conditions per place. [2023-08-03 19:31:38,058 INFO L140 encePairwiseOnDemand]: 399/402 looper letters, 94 selfloop transitions, 3 changer transitions 0/129 dead transitions. [2023-08-03 19:31:38,058 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 129 transitions, 640 flow [2023-08-03 19:31:38,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 19:31:38,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 19:31:38,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 807 transitions. [2023-08-03 19:31:38,060 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5018656716417911 [2023-08-03 19:31:38,060 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 807 transitions. [2023-08-03 19:31:38,060 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 807 transitions. [2023-08-03 19:31:38,061 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:31:38,061 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 807 transitions. [2023-08-03 19:31:38,062 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 201.75) internal successors, (807), 4 states have internal predecessors, (807), 0 states have call successors, (0), 0 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 19:31:38,063 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 402.0) internal successors, (2010), 5 states have internal predecessors, (2010), 0 states have call successors, (0), 0 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 19:31:38,063 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 402.0) internal successors, (2010), 5 states have internal predecessors, (2010), 0 states have call successors, (0), 0 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 19:31:38,063 INFO L175 Difference]: Start difference. First operand has 107 places, 114 transitions, 420 flow. Second operand 4 states and 807 transitions. [2023-08-03 19:31:38,063 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 129 transitions, 640 flow [2023-08-03 19:32:03,909 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 129 transitions, 638 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 19:32:03,910 INFO L231 Difference]: Finished difference. Result has 109 places, 113 transitions, 416 flow [2023-08-03 19:32:03,910 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=402, PETRI_DIFFERENCE_MINUEND_FLOW=410, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=416, PETRI_PLACES=109, PETRI_TRANSITIONS=113} [2023-08-03 19:32:03,910 INFO L281 CegarLoopForPetriNet]: 87 programPoint places, 22 predicate places. [2023-08-03 19:32:03,911 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 113 transitions, 416 flow [2023-08-03 19:32:03,911 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 187.8) internal successors, (939), 5 states have internal predecessors, (939), 0 states have call successors, (0), 0 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 19:32:03,911 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:32:03,911 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:32:03,917 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 19:32:04,111 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 19:32:04,111 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 2 more)] === [2023-08-03 19:32:04,112 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:32:04,112 INFO L85 PathProgramCache]: Analyzing trace with hash -722026356, now seen corresponding path program 1 times [2023-08-03 19:32:04,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:32:04,112 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [940152092] [2023-08-03 19:32:04,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:32:04,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:32:04,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:32:04,153 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2023-08-03 19:32:04,154 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:32:04,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [940152092] [2023-08-03 19:32:04,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [940152092] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:32:04,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [624176850] [2023-08-03 19:32:04,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:32:04,154 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:32:04,154 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:32:04,155 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 19:32:04,161 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 19:32:04,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:32:04,257 INFO L262 TraceCheckSpWp]: Trace formula consists of 269 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-03 19:32:04,258 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:32:04,266 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2023-08-03 19:32:04,266 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 19:32:04,276 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2023-08-03 19:32:04,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [624176850] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 19:32:04,276 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 19:32:04,276 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 5 [2023-08-03 19:32:04,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445218308] [2023-08-03 19:32:04,276 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 19:32:04,277 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 19:32:04,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:32:04,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 19:32:04,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-03 19:32:04,290 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 179 out of 402 [2023-08-03 19:32:04,290 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 113 transitions, 416 flow. Second operand has 5 states, 5 states have (on average 188.0) internal successors, (940), 5 states have internal predecessors, (940), 0 states have call successors, (0), 0 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 19:32:04,290 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:32:04,291 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 179 of 402 [2023-08-03 19:32:04,291 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:32:22,144 INFO L124 PetriNetUnfolderBase]: 181851/259077 cut-off events. [2023-08-03 19:32:22,144 INFO L125 PetriNetUnfolderBase]: For 44837/44837 co-relation queries the response was YES. [2023-08-03 19:32:23,974 INFO L83 FinitePrefix]: Finished finitePrefix Result has 568054 conditions, 259077 events. 181851/259077 cut-off events. For 44837/44837 co-relation queries the response was YES. Maximal size of possible extension queue 5083. Compared 1867581 event pairs, 111137 based on Foata normal form. 1024/260084 useless extension candidates. Maximal degree in co-relation 523876. Up to 179674 conditions per place. [2023-08-03 19:32:24,952 INFO L140 encePairwiseOnDemand]: 398/402 looper letters, 103 selfloop transitions, 4 changer transitions 0/139 dead transitions. [2023-08-03 19:32:24,953 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 139 transitions, 698 flow [2023-08-03 19:32:24,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 19:32:24,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 19:32:24,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 817 transitions. [2023-08-03 19:32:24,954 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5080845771144279 [2023-08-03 19:32:24,954 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 817 transitions. [2023-08-03 19:32:24,955 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 817 transitions. [2023-08-03 19:32:24,955 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:32:24,955 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 817 transitions. [2023-08-03 19:32:24,956 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 204.25) internal successors, (817), 4 states have internal predecessors, (817), 0 states have call successors, (0), 0 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 19:32:24,957 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 402.0) internal successors, (2010), 5 states have internal predecessors, (2010), 0 states have call successors, (0), 0 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 19:32:24,957 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 402.0) internal successors, (2010), 5 states have internal predecessors, (2010), 0 states have call successors, (0), 0 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 19:32:24,957 INFO L175 Difference]: Start difference. First operand has 109 places, 113 transitions, 416 flow. Second operand 4 states and 817 transitions. [2023-08-03 19:32:24,957 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 139 transitions, 698 flow [2023-08-03 19:32:36,335 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 139 transitions, 692 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-03 19:32:36,336 INFO L231 Difference]: Finished difference. Result has 111 places, 114 transitions, 430 flow [2023-08-03 19:32:36,336 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=402, PETRI_DIFFERENCE_MINUEND_FLOW=410, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=430, PETRI_PLACES=111, PETRI_TRANSITIONS=114} [2023-08-03 19:32:36,337 INFO L281 CegarLoopForPetriNet]: 87 programPoint places, 24 predicate places. [2023-08-03 19:32:36,337 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 114 transitions, 430 flow [2023-08-03 19:32:36,337 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 188.0) internal successors, (940), 5 states have internal predecessors, (940), 0 states have call successors, (0), 0 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 19:32:36,337 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:32:36,337 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:32:36,341 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-08-03 19:32:36,537 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 19:32:36,538 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-03 19:32:36,538 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:32:36,538 INFO L85 PathProgramCache]: Analyzing trace with hash -571349990, now seen corresponding path program 1 times [2023-08-03 19:32:36,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:32:36,538 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1134562670] [2023-08-03 19:32:36,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:32:36,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:32:36,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:32:36,580 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2023-08-03 19:32:36,580 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:32:36,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1134562670] [2023-08-03 19:32:36,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1134562670] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:32:36,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1551267018] [2023-08-03 19:32:36,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:32:36,580 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:32:36,580 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:32:36,582 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 19:32:36,583 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-08-03 19:32:36,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:32:36,691 INFO L262 TraceCheckSpWp]: Trace formula consists of 282 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-03 19:32:36,692 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:32:36,702 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2023-08-03 19:32:36,702 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 19:32:36,712 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2023-08-03 19:32:36,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1551267018] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 19:32:36,712 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 19:32:36,712 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 5 [2023-08-03 19:32:36,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835818359] [2023-08-03 19:32:36,712 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 19:32:36,713 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 19:32:36,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:32:36,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 19:32:36,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-03 19:32:36,721 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 179 out of 402 [2023-08-03 19:32:36,722 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 114 transitions, 430 flow. Second operand has 5 states, 5 states have (on average 188.4) internal successors, (942), 5 states have internal predecessors, (942), 0 states have call successors, (0), 0 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 19:32:36,722 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:32:36,722 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 179 of 402 [2023-08-03 19:32:36,722 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:32:52,335 INFO L124 PetriNetUnfolderBase]: 153187/218446 cut-off events. [2023-08-03 19:32:52,335 INFO L125 PetriNetUnfolderBase]: For 68842/68842 co-relation queries the response was YES. [2023-08-03 19:32:53,915 INFO L83 FinitePrefix]: Finished finitePrefix Result has 504478 conditions, 218446 events. 153187/218446 cut-off events. For 68842/68842 co-relation queries the response was YES. Maximal size of possible extension queue 4282. Compared 1537418 event pairs, 80793 based on Foata normal form. 3489/221918 useless extension candidates. Maximal degree in co-relation 493339. Up to 114103 conditions per place. [2023-08-03 19:32:54,769 INFO L140 encePairwiseOnDemand]: 398/402 looper letters, 104 selfloop transitions, 4 changer transitions 0/140 dead transitions. [2023-08-03 19:32:54,769 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 140 transitions, 714 flow [2023-08-03 19:32:54,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 19:32:54,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 19:32:54,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 817 transitions. [2023-08-03 19:32:54,771 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5080845771144279 [2023-08-03 19:32:54,771 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 817 transitions. [2023-08-03 19:32:54,771 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 817 transitions. [2023-08-03 19:32:54,771 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:32:54,771 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 817 transitions. [2023-08-03 19:32:54,772 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 204.25) internal successors, (817), 4 states have internal predecessors, (817), 0 states have call successors, (0), 0 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 19:32:54,773 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 402.0) internal successors, (2010), 5 states have internal predecessors, (2010), 0 states have call successors, (0), 0 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 19:32:54,773 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 402.0) internal successors, (2010), 5 states have internal predecessors, (2010), 0 states have call successors, (0), 0 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 19:32:54,773 INFO L175 Difference]: Start difference. First operand has 111 places, 114 transitions, 430 flow. Second operand 4 states and 817 transitions. [2023-08-03 19:32:54,773 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 140 transitions, 714 flow [2023-08-03 19:33:02,871 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 140 transitions, 710 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-03 19:33:02,873 INFO L231 Difference]: Finished difference. Result has 115 places, 115 transitions, 446 flow [2023-08-03 19:33:02,873 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=402, PETRI_DIFFERENCE_MINUEND_FLOW=426, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=446, PETRI_PLACES=115, PETRI_TRANSITIONS=115} [2023-08-03 19:33:02,873 INFO L281 CegarLoopForPetriNet]: 87 programPoint places, 28 predicate places. [2023-08-03 19:33:02,873 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 115 transitions, 446 flow [2023-08-03 19:33:02,874 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 188.4) internal successors, (942), 5 states have internal predecessors, (942), 0 states have call successors, (0), 0 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 19:33:02,874 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:33:02,874 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:33:02,879 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-08-03 19:33:03,076 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:33:03,077 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-03 19:33:03,077 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:33:03,077 INFO L85 PathProgramCache]: Analyzing trace with hash 2092860411, now seen corresponding path program 1 times [2023-08-03 19:33:03,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:33:03,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2101904230] [2023-08-03 19:33:03,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:33:03,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:33:03,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:33:03,152 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2023-08-03 19:33:03,152 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:33:03,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2101904230] [2023-08-03 19:33:03,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2101904230] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:33:03,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1666104807] [2023-08-03 19:33:03,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:33:03,154 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:33:03,154 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:33:03,155 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 19:33:03,157 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-08-03 19:33:03,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:33:03,259 INFO L262 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-03 19:33:03,260 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:33:03,280 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2023-08-03 19:33:03,280 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 19:33:03,291 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2023-08-03 19:33:03,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1666104807] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 19:33:03,291 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 19:33:03,291 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 5 [2023-08-03 19:33:03,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269424979] [2023-08-03 19:33:03,291 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 19:33:03,291 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 19:33:03,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:33:03,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 19:33:03,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-03 19:33:03,303 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 179 out of 402 [2023-08-03 19:33:03,303 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 115 transitions, 446 flow. Second operand has 5 states, 5 states have (on average 188.8) internal successors, (944), 5 states have internal predecessors, (944), 0 states have call successors, (0), 0 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 19:33:03,303 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:33:03,303 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 179 of 402 [2023-08-03 19:33:03,303 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:33:19,172 INFO L124 PetriNetUnfolderBase]: 150835/214735 cut-off events. [2023-08-03 19:33:19,172 INFO L125 PetriNetUnfolderBase]: For 91180/91180 co-relation queries the response was YES. [2023-08-03 19:33:20,908 INFO L83 FinitePrefix]: Finished finitePrefix Result has 521427 conditions, 214735 events. 150835/214735 cut-off events. For 91180/91180 co-relation queries the response was YES. Maximal size of possible extension queue 4282. Compared 1506565 event pairs, 123449 based on Foata normal form. 577/215295 useless extension candidates. Maximal degree in co-relation 519606. Up to 184440 conditions per place. [2023-08-03 19:33:21,770 INFO L140 encePairwiseOnDemand]: 398/402 looper letters, 105 selfloop transitions, 4 changer transitions 0/141 dead transitions. [2023-08-03 19:33:21,770 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 141 transitions, 732 flow [2023-08-03 19:33:21,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 19:33:21,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 19:33:21,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 817 transitions. [2023-08-03 19:33:21,771 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5080845771144279 [2023-08-03 19:33:21,772 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 817 transitions. [2023-08-03 19:33:21,772 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 817 transitions. [2023-08-03 19:33:21,772 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:33:21,772 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 817 transitions. [2023-08-03 19:33:21,773 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 204.25) internal successors, (817), 4 states have internal predecessors, (817), 0 states have call successors, (0), 0 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 19:33:21,774 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 402.0) internal successors, (2010), 5 states have internal predecessors, (2010), 0 states have call successors, (0), 0 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 19:33:21,774 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 402.0) internal successors, (2010), 5 states have internal predecessors, (2010), 0 states have call successors, (0), 0 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 19:33:21,774 INFO L175 Difference]: Start difference. First operand has 115 places, 115 transitions, 446 flow. Second operand 4 states and 817 transitions. [2023-08-03 19:33:21,774 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 141 transitions, 732 flow [2023-08-03 19:33:38,432 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 141 transitions, 728 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-03 19:33:38,433 INFO L231 Difference]: Finished difference. Result has 119 places, 116 transitions, 462 flow [2023-08-03 19:33:38,433 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=402, PETRI_DIFFERENCE_MINUEND_FLOW=442, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=462, PETRI_PLACES=119, PETRI_TRANSITIONS=116} [2023-08-03 19:33:38,434 INFO L281 CegarLoopForPetriNet]: 87 programPoint places, 32 predicate places. [2023-08-03 19:33:38,434 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 116 transitions, 462 flow [2023-08-03 19:33:38,434 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 188.8) internal successors, (944), 5 states have internal predecessors, (944), 0 states have call successors, (0), 0 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 19:33:38,434 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:33:38,434 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:33:38,440 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-08-03 19:33:38,634 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:33:38,635 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-03 19:33:38,635 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:33:38,635 INFO L85 PathProgramCache]: Analyzing trace with hash -721674626, now seen corresponding path program 1 times [2023-08-03 19:33:38,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:33:38,635 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1245183562] [2023-08-03 19:33:38,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:33:38,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:33:38,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:33:38,696 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2023-08-03 19:33:38,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:33:38,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1245183562] [2023-08-03 19:33:38,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1245183562] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:33:38,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1850144066] [2023-08-03 19:33:38,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:33:38,696 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:33:38,697 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:33:38,698 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 19:33:38,700 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-08-03 19:33:38,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:33:38,812 INFO L262 TraceCheckSpWp]: Trace formula consists of 308 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-03 19:33:38,813 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:33:38,822 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2023-08-03 19:33:38,822 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 19:33:38,831 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2023-08-03 19:33:38,831 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1850144066] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 19:33:38,831 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 19:33:38,831 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 4 [2023-08-03 19:33:38,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255903665] [2023-08-03 19:33:38,831 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 19:33:38,832 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 19:33:38,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:33:38,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 19:33:38,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-03 19:33:38,840 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 179 out of 402 [2023-08-03 19:33:38,841 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 116 transitions, 462 flow. Second operand has 5 states, 5 states have (on average 189.2) internal successors, (946), 5 states have internal predecessors, (946), 0 states have call successors, (0), 0 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 19:33:38,841 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:33:38,841 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 179 of 402 [2023-08-03 19:33:38,841 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand Received shutdown request... [2023-08-03 19:33:48,223 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-08-03 19:33:48,223 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-08-03 19:33:49,233 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 [2023-08-03 19:33:49,257 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2023-08-03 19:33:49,490 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (4 of 5 remaining) [2023-08-03 19:33:49,490 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-08-03 19:33:49,490 WARN L619 AbstractCegarLoop]: Verification canceled: while executing Executor. [2023-08-03 19:33:49,490 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 5 remaining) [2023-08-03 19:33:49,490 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 5 remaining) [2023-08-03 19:33:49,490 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 5 remaining) [2023-08-03 19:33:49,490 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 5 remaining) [2023-08-03 19:33:49,491 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:33:49,492 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 2 thread instances [2023-08-03 19:33:49,492 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-03 19:33:49,495 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.08 07:33:49 BasicIcfg [2023-08-03 19:33:49,495 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-03 19:33:49,495 INFO L158 Benchmark]: Toolchain (without parser) took 665821.79ms. Allocated memory was 574.6MB in the beginning and 16.0GB in the end (delta: 15.4GB). Free memory was 533.5MB in the beginning and 9.4GB in the end (delta: -8.8GB). Peak memory consumption was 7.9GB. Max. memory is 16.0GB. [2023-08-03 19:33:49,495 INFO L158 Benchmark]: CDTParser took 0.08ms. Allocated memory is still 341.8MB. Free memory was 290.8MB in the beginning and 290.7MB in the end (delta: 139.9kB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-03 19:33:49,495 INFO L158 Benchmark]: CACSL2BoogieTranslator took 205.94ms. Allocated memory is still 574.6MB. Free memory was 533.5MB in the beginning and 521.5MB in the end (delta: 12.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.0GB. [2023-08-03 19:33:49,496 INFO L158 Benchmark]: Boogie Procedure Inliner took 41.68ms. Allocated memory is still 574.6MB. Free memory was 521.5MB in the beginning and 519.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-03 19:33:49,496 INFO L158 Benchmark]: Boogie Preprocessor took 31.09ms. Allocated memory is still 574.6MB. Free memory was 519.4MB in the beginning and 518.1MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-03 19:33:49,496 INFO L158 Benchmark]: RCFGBuilder took 367.61ms. Allocated memory is still 574.6MB. Free memory was 517.7MB in the beginning and 500.0MB in the end (delta: 17.8MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. [2023-08-03 19:33:49,496 INFO L158 Benchmark]: TraceAbstraction took 665170.54ms. Allocated memory was 574.6MB in the beginning and 16.0GB in the end (delta: 15.4GB). Free memory was 499.6MB in the beginning and 9.4GB in the end (delta: -8.9GB). Peak memory consumption was 7.9GB. Max. memory is 16.0GB. [2023-08-03 19:33:49,497 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.08ms. Allocated memory is still 341.8MB. Free memory was 290.8MB in the beginning and 290.7MB in the end (delta: 139.9kB). There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 205.94ms. Allocated memory is still 574.6MB. Free memory was 533.5MB in the beginning and 521.5MB in the end (delta: 12.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 41.68ms. Allocated memory is still 574.6MB. Free memory was 521.5MB in the beginning and 519.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 31.09ms. Allocated memory is still 574.6MB. Free memory was 519.4MB in the beginning and 518.1MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 367.61ms. Allocated memory is still 574.6MB. Free memory was 517.7MB in the beginning and 500.0MB in the end (delta: 17.8MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. * TraceAbstraction took 665170.54ms. Allocated memory was 574.6MB in the beginning and 16.0GB in the end (delta: 15.4GB). Free memory was 499.6MB in the beginning and 9.4GB in the end (delta: -8.9GB). Peak memory consumption was 7.9GB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3.2s, 170 PlacesBefore, 55 PlacesAfterwards, 195 TransitionsBefore, 66 TransitionsAfterwards, 6244 CoEnabledTransitionPairs, 6 FixpointIterations, 40 TrivialSequentialCompositions, 68 ConcurrentSequentialCompositions, 1 TrivialYvCompositions, 26 ConcurrentYvCompositions, 14 ChoiceCompositions, 149 TotalNumberOfCompositions, 16931 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 15529, independent: 15472, independent conditional: 0, independent unconditional: 15472, dependent: 57, dependent conditional: 0, dependent unconditional: 57, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 3472, independent: 3443, independent conditional: 0, independent unconditional: 3443, dependent: 29, dependent conditional: 0, dependent unconditional: 29, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 15529, independent: 12029, independent conditional: 0, independent unconditional: 12029, dependent: 28, dependent conditional: 0, dependent unconditional: 28, unknown: 3472, unknown conditional: 0, unknown unconditional: 3472] , Statistics on independence cache: Total cache size (in pairs): 482, Positive cache size: 474, Positive conditional cache size: 0, Positive unconditional cache size: 474, Negative cache size: 8, Negative conditional cache size: 0, Negative unconditional cache size: 8, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 4.9s, 202 PlacesBefore, 87 PlacesAfterwards, 243 TransitionsBefore, 110 TransitionsAfterwards, 16072 CoEnabledTransitionPairs, 6 FixpointIterations, 42 TrivialSequentialCompositions, 64 ConcurrentSequentialCompositions, 1 TrivialYvCompositions, 34 ConcurrentYvCompositions, 18 ChoiceCompositions, 159 TotalNumberOfCompositions, 77946 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 48783, independent: 48378, independent conditional: 0, independent unconditional: 48378, dependent: 405, dependent conditional: 0, dependent unconditional: 405, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 8799, independent: 8717, independent conditional: 0, independent unconditional: 8717, dependent: 82, dependent conditional: 0, dependent unconditional: 82, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 48783, independent: 39661, independent conditional: 0, independent unconditional: 39661, dependent: 323, dependent conditional: 0, dependent unconditional: 323, unknown: 8799, unknown conditional: 0, unknown unconditional: 8799] , Statistics on independence cache: Total cache size (in pairs): 1968, Positive cache size: 1944, Positive conditional cache size: 0, Positive unconditional cache size: 1944, Negative cache size: 24, Negative conditional cache size: 0, Negative unconditional cache size: 24, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - TimeoutResultAtElement [Line: 96]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while executing Executor. - TimeoutResultAtElement [Line: 86]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while executing Executor. - TimeoutResultAtElement [Line: 89]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while executing Executor. - TimeoutResultAtElement [Line: 88]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while executing Executor. - TimeoutResultAtElement [Line: 87]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while executing Executor. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 9 procedures, 186 locations, 5 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 3.5s, OverallIterations: 1, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.4s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=200occurred 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 13 procedures, 210 locations, 5 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 661.5s, OverallIterations: 20, TraceHistogramMax: 3, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 647.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 6.9s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 950 SdHoareTripleChecker+Valid, 2.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 796 mSDsluCounter, 24 SdHoareTripleChecker+Invalid, 2.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 68 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3684 IncrementalHoareTripleChecker+Invalid, 3752 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 68 mSolverCounterUnsat, 24 mSDtfsCounter, 3684 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1198 GetRequests, 1120 SyntacticMatches, 16 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=462occurred in iteration=19, InterpolantAutomatonStates: 72, 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, 1.3s InterpolantComputationTime, 1491 NumberOfCodeBlocks, 1491 NumberOfCodeBlocksAsserted, 39 NumberOfCheckSat, 1850 ConstructedInterpolants, 0 QuantifiedInterpolants, 2320 SizeOfPredicates, 0 NumberOfNonLiveVariables, 3868 ConjunctsInSsa, 54 ConjunctsInUnsatCore, 47 InterpolantComputations, 12 PerfectInterpolantSequences, 893/944 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 RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown