/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf --traceabstraction.order.of.the.error.locations.to.be.checked TOGETHER -tc /storage/repos/CAV22/benchmarks/AutomizerCInline.xml -i /storage/repos/CAV22/benchmarks/increased_bounds/weaver_chl-simpl-str-trans.wvr_bound2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-19404b3-m [2023-08-03 19:47:36,829 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-03 19:47:36,897 INFO L114 SettingsManager]: Loading settings from /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-03 19:47:36,902 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-03 19:47:36,903 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-08-03 19:47:36,903 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Translation Mode: [2023-08-03 19:47:36,903 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-03 19:47:36,930 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-03 19:47:36,931 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-03 19:47:36,931 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-03 19:47:36,932 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-03 19:47:36,932 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-03 19:47:36,935 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-03 19:47:36,939 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-03 19:47:36,939 INFO L153 SettingsManager]: * Use SBE=true [2023-08-03 19:47:36,939 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-03 19:47:36,940 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-03 19:47:36,941 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-03 19:47:36,941 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-03 19:47:36,941 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-03 19:47:36,941 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-03 19:47:36,941 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-03 19:47:36,942 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-03 19:47:36,943 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-03 19:47:36,943 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-03 19:47:36,943 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-03 19:47:36,943 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-03 19:47:36,944 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-03 19:47:36,944 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-03 19:47:36,944 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-03 19:47:36,945 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 19:47:36,945 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-03 19:47:36,946 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-03 19:47:36,946 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-03 19:47:36,946 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-03 19:47:36,946 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-03 19:47:36,946 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-03 19:47:36,946 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-03 19:47:36,946 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-03 19:47:36,947 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-03 19:47:36,947 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-03 19:47:36,947 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> TOGETHER [2023-08-03 19:47:37,200 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-03 19:47:37,217 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-03 19:47:37,219 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-03 19:47:37,220 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-03 19:47:37,220 INFO L274 PluginConnector]: CDTParser initialized [2023-08-03 19:47:37,221 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/CAV22/benchmarks/increased_bounds/weaver_chl-simpl-str-trans.wvr_bound2.c [2023-08-03 19:47:38,366 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-03 19:47:38,550 INFO L384 CDTParser]: Found 1 translation units. [2023-08-03 19:47:38,550 INFO L180 CDTParser]: Scanning /storage/repos/CAV22/benchmarks/increased_bounds/weaver_chl-simpl-str-trans.wvr_bound2.c [2023-08-03 19:47:38,556 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b0f45f309/eb606a51053f4b44aa7fb7760f80504f/FLAG7e0dfb4c6 [2023-08-03 19:47:38,567 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b0f45f309/eb606a51053f4b44aa7fb7760f80504f [2023-08-03 19:47:38,569 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-03 19:47:38,570 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-03 19:47:38,571 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-03 19:47:38,571 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-03 19:47:38,577 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-03 19:47:38,578 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 07:47:38" (1/1) ... [2023-08-03 19:47:38,579 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7fa23b4d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:47:38, skipping insertion in model container [2023-08-03 19:47:38,579 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 07:47:38" (1/1) ... [2023-08-03 19:47:38,596 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-03 19:47:38,725 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/CAV22/benchmarks/increased_bounds/weaver_chl-simpl-str-trans.wvr_bound2.c[2757,2770] [2023-08-03 19:47:38,728 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 19:47:38,736 INFO L201 MainTranslator]: Completed pre-run [2023-08-03 19:47:38,762 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/CAV22/benchmarks/increased_bounds/weaver_chl-simpl-str-trans.wvr_bound2.c[2757,2770] [2023-08-03 19:47:38,764 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 19:47:38,776 INFO L206 MainTranslator]: Completed translation [2023-08-03 19:47:38,776 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:47:38 WrapperNode [2023-08-03 19:47:38,776 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-03 19:47:38,777 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-03 19:47:38,777 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-03 19:47:38,777 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-03 19:47:38,783 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:47:38" (1/1) ... [2023-08-03 19:47:38,790 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:47:38" (1/1) ... [2023-08-03 19:47:38,814 INFO L138 Inliner]: procedures = 23, calls = 30, calls flagged for inlining = 8, calls inlined = 12, statements flattened = 217 [2023-08-03 19:47:38,815 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-03 19:47:38,815 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-03 19:47:38,815 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-03 19:47:38,815 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-03 19:47:38,822 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:47:38" (1/1) ... [2023-08-03 19:47:38,823 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:47:38" (1/1) ... [2023-08-03 19:47:38,825 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:47:38" (1/1) ... [2023-08-03 19:47:38,826 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:47:38" (1/1) ... [2023-08-03 19:47:38,831 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:47:38" (1/1) ... [2023-08-03 19:47:38,834 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:47:38" (1/1) ... [2023-08-03 19:47:38,837 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:47:38" (1/1) ... [2023-08-03 19:47:38,838 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:47:38" (1/1) ... [2023-08-03 19:47:38,840 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-03 19:47:38,841 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-03 19:47:38,841 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-03 19:47:38,841 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-03 19:47:38,842 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:47:38" (1/1) ... [2023-08-03 19:47:38,846 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 19:47:38,857 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:47:38,878 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 19:47:38,890 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 19:47:38,918 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-03 19:47:38,918 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-03 19:47:38,918 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-03 19:47:38,919 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-03 19:47:38,919 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-03 19:47:38,919 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-08-03 19:47:38,919 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-08-03 19:47:38,919 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-03 19:47:38,919 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-03 19:47:38,919 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-03 19:47:38,919 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-03 19:47:38,921 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-03 19:47:38,921 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-03 19:47:38,922 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-03 19:47:38,923 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 19:47:39,039 INFO L236 CfgBuilder]: Building ICFG [2023-08-03 19:47:39,042 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-03 19:47:39,411 INFO L277 CfgBuilder]: Performing block encoding [2023-08-03 19:47:39,419 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-03 19:47:39,419 INFO L302 CfgBuilder]: Removed 6 assume(true) statements. [2023-08-03 19:47:39,421 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 07:47:39 BoogieIcfgContainer [2023-08-03 19:47:39,421 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-03 19:47:39,423 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-03 19:47:39,423 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-03 19:47:39,430 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-03 19:47:39,430 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.08 07:47:38" (1/3) ... [2023-08-03 19:47:39,431 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d007e6d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 07:47:39, skipping insertion in model container [2023-08-03 19:47:39,431 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:47:38" (2/3) ... [2023-08-03 19:47:39,432 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d007e6d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 07:47:39, skipping insertion in model container [2023-08-03 19:47:39,432 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 07:47:39" (3/3) ... [2023-08-03 19:47:39,433 INFO L112 eAbstractionObserver]: Analyzing ICFG weaver_chl-simpl-str-trans.wvr_bound2.c [2023-08-03 19:47:39,441 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-03 19:47:39,449 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-03 19:47:39,449 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-03 19:47:39,449 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-03 19:47:39,573 INFO L144 ThreadInstanceAdder]: Constructed 9 joinOtherThreadTransitions. [2023-08-03 19:47:39,608 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 222 places, 243 transitions, 528 flow [2023-08-03 19:47:39,845 INFO L124 PetriNetUnfolderBase]: 110/807 cut-off events. [2023-08-03 19:47:39,845 INFO L125 PetriNetUnfolderBase]: For 36/36 co-relation queries the response was YES. [2023-08-03 19:47:39,861 INFO L83 FinitePrefix]: Finished finitePrefix Result has 868 conditions, 807 events. 110/807 cut-off events. For 36/36 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 4853 event pairs, 0 based on Foata normal form. 0/687 useless extension candidates. Maximal degree in co-relation 424. Up to 16 conditions per place. [2023-08-03 19:47:39,861 INFO L82 GeneralOperation]: Start removeDead. Operand has 222 places, 243 transitions, 528 flow [2023-08-03 19:47:39,872 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 222 places, 243 transitions, 528 flow [2023-08-03 19:47:39,876 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 19:47:39,887 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 222 places, 243 transitions, 528 flow [2023-08-03 19:47:39,889 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 222 places, 243 transitions, 528 flow [2023-08-03 19:47:39,890 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 222 places, 243 transitions, 528 flow [2023-08-03 19:47:40,003 INFO L124 PetriNetUnfolderBase]: 110/807 cut-off events. [2023-08-03 19:47:40,004 INFO L125 PetriNetUnfolderBase]: For 36/36 co-relation queries the response was YES. [2023-08-03 19:47:40,010 INFO L83 FinitePrefix]: Finished finitePrefix Result has 868 conditions, 807 events. 110/807 cut-off events. For 36/36 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 4853 event pairs, 0 based on Foata normal form. 0/687 useless extension candidates. Maximal degree in co-relation 424. Up to 16 conditions per place. [2023-08-03 19:47:40,041 INFO L119 LiptonReduction]: Number of co-enabled transitions 22644 [2023-08-03 19:47:46,087 INFO L134 LiptonReduction]: Checked pairs total: 24633 [2023-08-03 19:47:46,087 INFO L136 LiptonReduction]: Total number of compositions: 255 [2023-08-03 19:47:46,099 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-03 19:47:46,105 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;@72132b1f, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 19:47:46,105 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-08-03 19:47:46,111 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 19:47:46,112 INFO L124 PetriNetUnfolderBase]: 0/26 cut-off events. [2023-08-03 19:47:46,112 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 19:47:46,112 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:47:46,112 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-03 19:47:46,113 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 19:47:46,117 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:47:46,117 INFO L85 PathProgramCache]: Analyzing trace with hash -1285135905, now seen corresponding path program 1 times [2023-08-03 19:47:46,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:47:46,125 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [261533233] [2023-08-03 19:47:46,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:47:46,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:47:46,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 19:47:46,222 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-03 19:47:46,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 19:47:46,258 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-03 19:47:46,259 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-03 19:47:46,260 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 4 remaining) [2023-08-03 19:47:46,261 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 4 remaining) [2023-08-03 19:47:46,262 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-08-03 19:47:46,262 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-08-03 19:47:46,262 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-03 19:47:46,263 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-03 19:47:46,265 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-03 19:47:46,266 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-03 19:47:46,341 INFO L144 ThreadInstanceAdder]: Constructed 18 joinOtherThreadTransitions. [2023-08-03 19:47:46,351 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 321 places, 357 transitions, 804 flow [2023-08-03 19:47:47,438 INFO L124 PetriNetUnfolderBase]: 938/4752 cut-off events. [2023-08-03 19:47:47,439 INFO L125 PetriNetUnfolderBase]: For 602/602 co-relation queries the response was YES. [2023-08-03 19:47:47,483 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5426 conditions, 4752 events. 938/4752 cut-off events. For 602/602 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 41389 event pairs, 22 based on Foata normal form. 0/4058 useless extension candidates. Maximal degree in co-relation 2850. Up to 192 conditions per place. [2023-08-03 19:47:47,483 INFO L82 GeneralOperation]: Start removeDead. Operand has 321 places, 357 transitions, 804 flow [2023-08-03 19:47:47,524 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 321 places, 357 transitions, 804 flow [2023-08-03 19:47:47,524 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 19:47:47,525 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 321 places, 357 transitions, 804 flow [2023-08-03 19:47:47,525 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 321 places, 357 transitions, 804 flow [2023-08-03 19:47:47,526 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 321 places, 357 transitions, 804 flow [2023-08-03 19:47:48,477 INFO L124 PetriNetUnfolderBase]: 938/4752 cut-off events. [2023-08-03 19:47:48,478 INFO L125 PetriNetUnfolderBase]: For 602/602 co-relation queries the response was YES. [2023-08-03 19:47:48,527 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5426 conditions, 4752 events. 938/4752 cut-off events. For 602/602 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 41389 event pairs, 22 based on Foata normal form. 0/4058 useless extension candidates. Maximal degree in co-relation 2850. Up to 192 conditions per place. [2023-08-03 19:47:48,708 INFO L119 LiptonReduction]: Number of co-enabled transitions 70380 [2023-08-03 19:47:57,062 INFO L134 LiptonReduction]: Checked pairs total: 88938 [2023-08-03 19:47:57,063 INFO L136 LiptonReduction]: Total number of compositions: 401 [2023-08-03 19:47:57,065 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-03 19:47:57,066 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;@72132b1f, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 19:47:57,066 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-08-03 19:47:57,069 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 19:47:57,069 INFO L124 PetriNetUnfolderBase]: 0/26 cut-off events. [2023-08-03 19:47:57,069 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-03 19:47:57,069 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:47:57,069 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:47:57,070 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 19:47:57,070 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:47:57,070 INFO L85 PathProgramCache]: Analyzing trace with hash 1775646613, now seen corresponding path program 1 times [2023-08-03 19:47:57,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:47:57,070 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1787343375] [2023-08-03 19:47:57,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:47:57,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:47:57,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:47:57,218 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 19:47:57,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:47:57,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1787343375] [2023-08-03 19:47:57,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1787343375] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 19:47:57,219 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 19:47:57,219 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-03 19:47:57,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235478567] [2023-08-03 19:47:57,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 19:47:57,226 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 19:47:57,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:47:57,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 19:47:57,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 19:47:57,267 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 309 out of 758 [2023-08-03 19:47:57,271 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 59 transitions, 208 flow. Second operand has 3 states, 3 states have (on average 311.3333333333333) internal successors, (934), 3 states have internal predecessors, (934), 0 states have call successors, (0), 0 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 19:47:57,271 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:47:57,271 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 309 of 758 [2023-08-03 19:47:57,272 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:48:01,069 INFO L124 PetriNetUnfolderBase]: 19931/30055 cut-off events. [2023-08-03 19:48:01,069 INFO L125 PetriNetUnfolderBase]: For 6700/6700 co-relation queries the response was YES. [2023-08-03 19:48:01,109 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63034 conditions, 30055 events. 19931/30055 cut-off events. For 6700/6700 co-relation queries the response was YES. Maximal size of possible extension queue 680. Compared 189781 event pairs, 13302 based on Foata normal form. 0/27501 useless extension candidates. Maximal degree in co-relation 25364. Up to 28006 conditions per place. [2023-08-03 19:48:01,221 INFO L140 encePairwiseOnDemand]: 754/758 looper letters, 50 selfloop transitions, 2 changer transitions 0/61 dead transitions. [2023-08-03 19:48:01,222 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 61 transitions, 316 flow [2023-08-03 19:48:01,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 19:48:01,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 19:48:01,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 981 transitions. [2023-08-03 19:48:01,241 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4313984168865435 [2023-08-03 19:48:01,242 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 981 transitions. [2023-08-03 19:48:01,242 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 981 transitions. [2023-08-03 19:48:01,246 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:48:01,248 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 981 transitions. [2023-08-03 19:48:01,254 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 327.0) internal successors, (981), 3 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 19:48:01,264 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 758.0) internal successors, (3032), 4 states have internal predecessors, (3032), 0 states have call successors, (0), 0 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 19:48:01,266 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 758.0) internal successors, (3032), 4 states have internal predecessors, (3032), 0 states have call successors, (0), 0 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 19:48:01,268 INFO L175 Difference]: Start difference. First operand has 54 places, 59 transitions, 208 flow. Second operand 3 states and 981 transitions. [2023-08-03 19:48:01,268 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 61 transitions, 316 flow [2023-08-03 19:48:01,282 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 61 transitions, 316 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-03 19:48:01,285 INFO L231 Difference]: Finished difference. Result has 56 places, 59 transitions, 218 flow [2023-08-03 19:48:01,286 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=758, PETRI_DIFFERENCE_MINUEND_FLOW=206, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=218, PETRI_PLACES=56, PETRI_TRANSITIONS=59} [2023-08-03 19:48:01,289 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 2 predicate places. [2023-08-03 19:48:01,289 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 59 transitions, 218 flow [2023-08-03 19:48:01,291 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 311.3333333333333) internal successors, (934), 3 states have internal predecessors, (934), 0 states have call successors, (0), 0 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 19:48:01,291 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:48:01,291 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-08-03 19:48:01,291 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-03 19:48:01,292 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 19:48:01,295 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:48:01,295 INFO L85 PathProgramCache]: Analyzing trace with hash -3856424, now seen corresponding path program 1 times [2023-08-03 19:48:01,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:48:01,300 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [589722550] [2023-08-03 19:48:01,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:48:01,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:48:01,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:48:01,422 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 19:48:01,422 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:48:01,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [589722550] [2023-08-03 19:48:01,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [589722550] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:48:01,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1866256380] [2023-08-03 19:48:01,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:48:01,423 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:48:01,423 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:48:01,429 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 19:48:01,431 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 19:48:01,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:48:01,512 INFO L262 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-03 19:48:01,514 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:48:01,556 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 19:48:01,557 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 19:48:01,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1866256380] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 19:48:01,557 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 19:48:01,557 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 5 [2023-08-03 19:48:01,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140480099] [2023-08-03 19:48:01,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 19:48:01,558 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 19:48:01,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:48:01,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 19:48:01,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-03 19:48:01,584 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 308 out of 758 [2023-08-03 19:48:01,586 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 59 transitions, 218 flow. Second operand has 5 states, 5 states have (on average 309.6) internal successors, (1548), 5 states have internal predecessors, (1548), 0 states have call successors, (0), 0 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 19:48:01,586 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:48:01,586 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 308 of 758 [2023-08-03 19:48:01,586 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:48:05,036 INFO L124 PetriNetUnfolderBase]: 19927/30047 cut-off events. [2023-08-03 19:48:05,036 INFO L125 PetriNetUnfolderBase]: For 6694/6694 co-relation queries the response was YES. [2023-08-03 19:48:05,088 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63031 conditions, 30047 events. 19927/30047 cut-off events. For 6694/6694 co-relation queries the response was YES. Maximal size of possible extension queue 675. Compared 189616 event pairs, 10644 based on Foata normal form. 4/27503 useless extension candidates. Maximal degree in co-relation 38108. Up to 27985 conditions per place. [2023-08-03 19:48:05,192 INFO L140 encePairwiseOnDemand]: 754/758 looper letters, 51 selfloop transitions, 4 changer transitions 0/63 dead transitions. [2023-08-03 19:48:05,193 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 63 transitions, 334 flow [2023-08-03 19:48:05,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-03 19:48:05,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-03 19:48:05,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1596 transitions. [2023-08-03 19:48:05,197 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42110817941952505 [2023-08-03 19:48:05,197 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1596 transitions. [2023-08-03 19:48:05,197 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1596 transitions. [2023-08-03 19:48:05,198 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:48:05,198 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1596 transitions. [2023-08-03 19:48:05,202 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 319.2) internal successors, (1596), 5 states have internal predecessors, (1596), 0 states have call successors, (0), 0 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 19:48:05,207 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 758.0) internal successors, (4548), 6 states have internal predecessors, (4548), 0 states have call successors, (0), 0 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 19:48:05,209 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 758.0) internal successors, (4548), 6 states have internal predecessors, (4548), 0 states have call successors, (0), 0 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 19:48:05,209 INFO L175 Difference]: Start difference. First operand has 56 places, 59 transitions, 218 flow. Second operand 5 states and 1596 transitions. [2023-08-03 19:48:05,209 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 63 transitions, 334 flow [2023-08-03 19:48:05,219 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 63 transitions, 324 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-03 19:48:05,220 INFO L231 Difference]: Finished difference. Result has 58 places, 59 transitions, 223 flow [2023-08-03 19:48:05,220 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=758, PETRI_DIFFERENCE_MINUEND_FLOW=202, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=223, PETRI_PLACES=58, PETRI_TRANSITIONS=59} [2023-08-03 19:48:05,221 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 4 predicate places. [2023-08-03 19:48:05,221 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 59 transitions, 223 flow [2023-08-03 19:48:05,222 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 309.6) internal successors, (1548), 5 states have internal predecessors, (1548), 0 states have call successors, (0), 0 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 19:48:05,222 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:48:05,222 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:48:05,234 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-03 19:48:05,431 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 19:48:05,432 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 19:48:05,432 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:48:05,432 INFO L85 PathProgramCache]: Analyzing trace with hash -1888980753, now seen corresponding path program 1 times [2023-08-03 19:48:05,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:48:05,432 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1997344054] [2023-08-03 19:48:05,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:48:05,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:48:05,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:48:05,476 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 19:48:05,476 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:48:05,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1997344054] [2023-08-03 19:48:05,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1997344054] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:48:05,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1872125437] [2023-08-03 19:48:05,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:48:05,477 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:48:05,477 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:48:05,480 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 19:48:05,482 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 19:48:05,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:48:05,556 INFO L262 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-03 19:48:05,558 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:48:05,565 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 19:48:05,565 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 19:48:05,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1872125437] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 19:48:05,566 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 19:48:05,566 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-08-03 19:48:05,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388507010] [2023-08-03 19:48:05,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 19:48:05,567 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 19:48:05,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:48:05,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 19:48:05,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-03 19:48:05,578 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 309 out of 758 [2023-08-03 19:48:05,580 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 59 transitions, 223 flow. Second operand has 3 states, 3 states have (on average 312.3333333333333) internal successors, (937), 3 states have internal predecessors, (937), 0 states have call successors, (0), 0 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 19:48:05,580 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:48:05,580 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 309 of 758 [2023-08-03 19:48:05,580 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:48:08,907 INFO L124 PetriNetUnfolderBase]: 19713/29605 cut-off events. [2023-08-03 19:48:08,908 INFO L125 PetriNetUnfolderBase]: For 5675/5675 co-relation queries the response was YES. [2023-08-03 19:48:08,946 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61473 conditions, 29605 events. 19713/29605 cut-off events. For 5675/5675 co-relation queries the response was YES. Maximal size of possible extension queue 706. Compared 185298 event pairs, 13225 based on Foata normal form. 0/27123 useless extension candidates. Maximal degree in co-relation 26846. Up to 27624 conditions per place. [2023-08-03 19:48:09,043 INFO L140 encePairwiseOnDemand]: 755/758 looper letters, 53 selfloop transitions, 3 changer transitions 0/64 dead transitions. [2023-08-03 19:48:09,044 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 64 transitions, 345 flow [2023-08-03 19:48:09,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 19:48:09,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 19:48:09,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 982 transitions. [2023-08-03 19:48:09,047 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4318381706244503 [2023-08-03 19:48:09,047 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 982 transitions. [2023-08-03 19:48:09,047 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 982 transitions. [2023-08-03 19:48:09,047 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:48:09,048 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 982 transitions. [2023-08-03 19:48:09,050 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 327.3333333333333) internal successors, (982), 3 states have internal predecessors, (982), 0 states have call successors, (0), 0 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 19:48:09,053 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 758.0) internal successors, (3032), 4 states have internal predecessors, (3032), 0 states have call successors, (0), 0 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 19:48:09,054 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 758.0) internal successors, (3032), 4 states have internal predecessors, (3032), 0 states have call successors, (0), 0 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 19:48:09,055 INFO L175 Difference]: Start difference. First operand has 58 places, 59 transitions, 223 flow. Second operand 3 states and 982 transitions. [2023-08-03 19:48:09,055 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 64 transitions, 345 flow [2023-08-03 19:48:09,059 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 64 transitions, 338 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-08-03 19:48:09,061 INFO L231 Difference]: Finished difference. Result has 59 places, 60 transitions, 231 flow [2023-08-03 19:48:09,061 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=758, PETRI_DIFFERENCE_MINUEND_FLOW=216, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=231, PETRI_PLACES=59, PETRI_TRANSITIONS=60} [2023-08-03 19:48:09,063 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 5 predicate places. [2023-08-03 19:48:09,063 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 60 transitions, 231 flow [2023-08-03 19:48:09,064 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 312.3333333333333) internal successors, (937), 3 states have internal predecessors, (937), 0 states have call successors, (0), 0 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 19:48:09,064 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:48:09,064 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:48:09,074 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-03 19:48:09,272 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 19:48:09,272 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 19:48:09,272 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:48:09,273 INFO L85 PathProgramCache]: Analyzing trace with hash 694171578, now seen corresponding path program 1 times [2023-08-03 19:48:09,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:48:09,273 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [20933951] [2023-08-03 19:48:09,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:48:09,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:48:09,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:48:09,360 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-03 19:48:09,360 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:48:09,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [20933951] [2023-08-03 19:48:09,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [20933951] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:48:09,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [141327203] [2023-08-03 19:48:09,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:48:09,361 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:48:09,361 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:48:09,363 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 19:48:09,365 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 19:48:09,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:48:09,436 INFO L262 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-03 19:48:09,436 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:48:09,443 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-03 19:48:09,443 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 19:48:09,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [141327203] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 19:48:09,443 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 19:48:09,443 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-08-03 19:48:09,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397206178] [2023-08-03 19:48:09,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 19:48:09,444 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 19:48:09,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:48:09,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 19:48:09,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-03 19:48:09,451 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 309 out of 758 [2023-08-03 19:48:09,452 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 60 transitions, 231 flow. Second operand has 3 states, 3 states have (on average 313.3333333333333) internal successors, (940), 3 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 19:48:09,452 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:48:09,452 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 309 of 758 [2023-08-03 19:48:09,452 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:48:12,934 INFO L124 PetriNetUnfolderBase]: 19677/29839 cut-off events. [2023-08-03 19:48:12,935 INFO L125 PetriNetUnfolderBase]: For 4226/4226 co-relation queries the response was YES. [2023-08-03 19:48:12,967 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61755 conditions, 29839 events. 19677/29839 cut-off events. For 4226/4226 co-relation queries the response was YES. Maximal size of possible extension queue 791. Compared 190431 event pairs, 13170 based on Foata normal form. 0/27429 useless extension candidates. Maximal degree in co-relation 26912. Up to 27248 conditions per place. [2023-08-03 19:48:13,045 INFO L140 encePairwiseOnDemand]: 755/758 looper letters, 57 selfloop transitions, 2 changer transitions 0/67 dead transitions. [2023-08-03 19:48:13,045 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 67 transitions, 363 flow [2023-08-03 19:48:13,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 19:48:13,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 19:48:13,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 984 transitions. [2023-08-03 19:48:13,048 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43271767810026385 [2023-08-03 19:48:13,048 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 984 transitions. [2023-08-03 19:48:13,048 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 984 transitions. [2023-08-03 19:48:13,049 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:48:13,049 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 984 transitions. [2023-08-03 19:48:13,051 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 328.0) internal successors, (984), 3 states have internal predecessors, (984), 0 states have call successors, (0), 0 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 19:48:13,054 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 758.0) internal successors, (3032), 4 states have internal predecessors, (3032), 0 states have call successors, (0), 0 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 19:48:13,055 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 758.0) internal successors, (3032), 4 states have internal predecessors, (3032), 0 states have call successors, (0), 0 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 19:48:13,056 INFO L175 Difference]: Start difference. First operand has 59 places, 60 transitions, 231 flow. Second operand 3 states and 984 transitions. [2023-08-03 19:48:13,056 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 67 transitions, 363 flow [2023-08-03 19:48:13,059 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 67 transitions, 360 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 19:48:13,061 INFO L231 Difference]: Finished difference. Result has 61 places, 61 transitions, 240 flow [2023-08-03 19:48:13,061 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=758, PETRI_DIFFERENCE_MINUEND_FLOW=228, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=240, PETRI_PLACES=61, PETRI_TRANSITIONS=61} [2023-08-03 19:48:13,062 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 7 predicate places. [2023-08-03 19:48:13,062 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 61 transitions, 240 flow [2023-08-03 19:48:13,063 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 313.3333333333333) internal successors, (940), 3 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 19:48:13,063 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:48:13,063 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:48:13,071 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 19:48:13,268 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 19:48:13,268 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 19:48:13,268 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:48:13,269 INFO L85 PathProgramCache]: Analyzing trace with hash -273156651, now seen corresponding path program 1 times [2023-08-03 19:48:13,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:48:13,269 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [698634347] [2023-08-03 19:48:13,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:48:13,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:48:13,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:48:13,333 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 19:48:13,333 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:48:13,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [698634347] [2023-08-03 19:48:13,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [698634347] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:48:13,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1076937066] [2023-08-03 19:48:13,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:48:13,337 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:48:13,337 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:48:13,339 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 19:48:13,366 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 19:48:13,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:48:13,429 INFO L262 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-03 19:48:13,430 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:48:13,445 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 19:48:13,446 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 19:48:13,466 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 19:48:13,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1076937066] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 19:48:13,466 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 19:48:13,466 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 4 [2023-08-03 19:48:13,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156246685] [2023-08-03 19:48:13,466 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 19:48:13,467 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 19:48:13,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:48:13,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 19:48:13,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-03 19:48:13,482 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 308 out of 758 [2023-08-03 19:48:13,484 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 61 transitions, 240 flow. Second operand has 5 states, 5 states have (on average 310.6) internal successors, (1553), 5 states have internal predecessors, (1553), 0 states have call successors, (0), 0 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 19:48:13,484 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:48:13,484 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 308 of 758 [2023-08-03 19:48:13,484 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:48:16,677 INFO L124 PetriNetUnfolderBase]: 19097/28909 cut-off events. [2023-08-03 19:48:16,677 INFO L125 PetriNetUnfolderBase]: For 4369/4369 co-relation queries the response was YES. [2023-08-03 19:48:16,720 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60116 conditions, 28909 events. 19097/28909 cut-off events. For 4369/4369 co-relation queries the response was YES. Maximal size of possible extension queue 809. Compared 182930 event pairs, 10459 based on Foata normal form. 2/26719 useless extension candidates. Maximal degree in co-relation 23254. Up to 26756 conditions per place. [2023-08-03 19:48:16,803 INFO L140 encePairwiseOnDemand]: 755/758 looper letters, 53 selfloop transitions, 3 changer transitions 0/64 dead transitions. [2023-08-03 19:48:16,803 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 64 transitions, 354 flow [2023-08-03 19:48:16,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 19:48:16,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 19:48:16,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1287 transitions. [2023-08-03 19:48:16,807 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4244722955145119 [2023-08-03 19:48:16,807 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1287 transitions. [2023-08-03 19:48:16,807 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1287 transitions. [2023-08-03 19:48:16,808 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:48:16,808 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1287 transitions. [2023-08-03 19:48:16,811 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 321.75) internal successors, (1287), 4 states have internal predecessors, (1287), 0 states have call successors, (0), 0 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 19:48:16,815 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 758.0) internal successors, (3790), 5 states have internal predecessors, (3790), 0 states have call successors, (0), 0 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 19:48:16,817 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 758.0) internal successors, (3790), 5 states have internal predecessors, (3790), 0 states have call successors, (0), 0 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 19:48:16,817 INFO L175 Difference]: Start difference. First operand has 61 places, 61 transitions, 240 flow. Second operand 4 states and 1287 transitions. [2023-08-03 19:48:16,817 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 64 transitions, 354 flow [2023-08-03 19:48:16,822 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 64 transitions, 352 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 19:48:16,825 INFO L231 Difference]: Finished difference. Result has 63 places, 60 transitions, 236 flow [2023-08-03 19:48:16,825 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=758, PETRI_DIFFERENCE_MINUEND_FLOW=230, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=236, PETRI_PLACES=63, PETRI_TRANSITIONS=60} [2023-08-03 19:48:16,827 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 9 predicate places. [2023-08-03 19:48:16,827 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 60 transitions, 236 flow [2023-08-03 19:48:16,829 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 310.6) internal successors, (1553), 5 states have internal predecessors, (1553), 0 states have call successors, (0), 0 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 19:48:16,829 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:48:16,829 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:48:16,837 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-03 19:48:17,033 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 19:48:17,034 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 19:48:17,034 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:48:17,034 INFO L85 PathProgramCache]: Analyzing trace with hash 205876058, now seen corresponding path program 1 times [2023-08-03 19:48:17,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:48:17,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1476478979] [2023-08-03 19:48:17,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:48:17,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:48:17,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:48:17,091 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 19:48:17,091 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:48:17,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1476478979] [2023-08-03 19:48:17,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1476478979] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:48:17,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1895900663] [2023-08-03 19:48:17,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:48:17,092 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:48:17,092 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:48:17,093 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 19:48:17,101 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 19:48:17,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:48:17,201 INFO L262 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-03 19:48:17,203 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:48:17,228 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 19:48:17,228 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 19:48:17,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1895900663] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 19:48:17,228 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 19:48:17,228 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 6 [2023-08-03 19:48:17,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1802851634] [2023-08-03 19:48:17,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 19:48:17,229 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 19:48:17,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:48:17,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 19:48:17,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-03 19:48:17,242 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 308 out of 758 [2023-08-03 19:48:17,243 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 60 transitions, 236 flow. Second operand has 5 states, 5 states have (on average 310.6) internal successors, (1553), 5 states have internal predecessors, (1553), 0 states have call successors, (0), 0 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 19:48:17,243 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:48:17,243 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 308 of 758 [2023-08-03 19:48:17,243 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:48:20,000 INFO L124 PetriNetUnfolderBase]: 19065/28853 cut-off events. [2023-08-03 19:48:20,000 INFO L125 PetriNetUnfolderBase]: For 4289/4289 co-relation queries the response was YES. [2023-08-03 19:48:20,077 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59955 conditions, 28853 events. 19065/28853 cut-off events. For 4289/4289 co-relation queries the response was YES. Maximal size of possible extension queue 806. Compared 182583 event pairs, 5351 based on Foata normal form. 16/26677 useless extension candidates. Maximal degree in co-relation 36723. Up to 26587 conditions per place. [2023-08-03 19:48:20,184 INFO L140 encePairwiseOnDemand]: 754/758 looper letters, 59 selfloop transitions, 4 changer transitions 0/70 dead transitions. [2023-08-03 19:48:20,184 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 70 transitions, 382 flow [2023-08-03 19:48:20,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-03 19:48:20,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-03 19:48:20,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1602 transitions. [2023-08-03 19:48:20,188 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42269129287598944 [2023-08-03 19:48:20,188 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1602 transitions. [2023-08-03 19:48:20,188 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1602 transitions. [2023-08-03 19:48:20,189 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:48:20,190 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1602 transitions. [2023-08-03 19:48:20,192 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 320.4) internal successors, (1602), 5 states have internal predecessors, (1602), 0 states have call successors, (0), 0 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 19:48:20,197 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 758.0) internal successors, (4548), 6 states have internal predecessors, (4548), 0 states have call successors, (0), 0 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 19:48:20,198 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 758.0) internal successors, (4548), 6 states have internal predecessors, (4548), 0 states have call successors, (0), 0 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 19:48:20,198 INFO L175 Difference]: Start difference. First operand has 63 places, 60 transitions, 236 flow. Second operand 5 states and 1602 transitions. [2023-08-03 19:48:20,198 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 70 transitions, 382 flow [2023-08-03 19:48:20,204 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 70 transitions, 368 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-08-03 19:48:20,206 INFO L231 Difference]: Finished difference. Result has 63 places, 60 transitions, 239 flow [2023-08-03 19:48:20,206 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=758, PETRI_DIFFERENCE_MINUEND_FLOW=216, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=239, PETRI_PLACES=63, PETRI_TRANSITIONS=60} [2023-08-03 19:48:20,208 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 9 predicate places. [2023-08-03 19:48:20,208 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 60 transitions, 239 flow [2023-08-03 19:48:20,209 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 310.6) internal successors, (1553), 5 states have internal predecessors, (1553), 0 states have call successors, (0), 0 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 19:48:20,210 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:48:20,210 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:48:20,217 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 19:48:20,410 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 19:48:20,410 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 19:48:20,411 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:48:20,411 INFO L85 PathProgramCache]: Analyzing trace with hash -244496479, now seen corresponding path program 1 times [2023-08-03 19:48:20,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:48:20,411 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [951049320] [2023-08-03 19:48:20,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:48:20,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:48:20,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:48:20,478 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-08-03 19:48:20,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:48:20,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [951049320] [2023-08-03 19:48:20,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [951049320] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:48:20,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [806428580] [2023-08-03 19:48:20,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:48:20,479 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:48:20,479 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:48:20,481 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 19:48:20,490 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 19:48:20,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:48:20,560 INFO L262 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-03 19:48:20,561 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:48:20,572 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-03 19:48:20,572 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 19:48:20,573 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [806428580] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 19:48:20,573 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 19:48:20,573 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2023-08-03 19:48:20,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [637060869] [2023-08-03 19:48:20,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 19:48:20,573 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 19:48:20,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:48:20,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 19:48:20,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-03 19:48:20,586 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 309 out of 758 [2023-08-03 19:48:20,587 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 60 transitions, 239 flow. Second operand has 3 states, 3 states have (on average 314.6666666666667) internal successors, (944), 3 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 19:48:20,587 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:48:20,587 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 309 of 758 [2023-08-03 19:48:20,587 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:48:23,181 INFO L124 PetriNetUnfolderBase]: 17593/26805 cut-off events. [2023-08-03 19:48:23,181 INFO L125 PetriNetUnfolderBase]: For 3446/3446 co-relation queries the response was YES. [2023-08-03 19:48:23,237 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55292 conditions, 26805 events. 17593/26805 cut-off events. For 3446/3446 co-relation queries the response was YES. Maximal size of possible extension queue 854. Compared 170517 event pairs, 12582 based on Foata normal form. 0/24805 useless extension candidates. Maximal degree in co-relation 34289. Up to 22628 conditions per place. [2023-08-03 19:48:23,304 INFO L140 encePairwiseOnDemand]: 755/758 looper letters, 65 selfloop transitions, 2 changer transitions 0/74 dead transitions. [2023-08-03 19:48:23,304 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 74 transitions, 415 flow [2023-08-03 19:48:23,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 19:48:23,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 19:48:23,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 991 transitions. [2023-08-03 19:48:23,307 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43579595426561124 [2023-08-03 19:48:23,307 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 991 transitions. [2023-08-03 19:48:23,307 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 991 transitions. [2023-08-03 19:48:23,308 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:48:23,308 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 991 transitions. [2023-08-03 19:48:23,310 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 330.3333333333333) internal successors, (991), 3 states have internal predecessors, (991), 0 states have call successors, (0), 0 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 19:48:23,312 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 758.0) internal successors, (3032), 4 states have internal predecessors, (3032), 0 states have call successors, (0), 0 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 19:48:23,313 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 758.0) internal successors, (3032), 4 states have internal predecessors, (3032), 0 states have call successors, (0), 0 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 19:48:23,313 INFO L175 Difference]: Start difference. First operand has 63 places, 60 transitions, 239 flow. Second operand 3 states and 991 transitions. [2023-08-03 19:48:23,313 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 74 transitions, 415 flow [2023-08-03 19:48:23,317 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 74 transitions, 408 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-08-03 19:48:23,321 INFO L231 Difference]: Finished difference. Result has 64 places, 61 transitions, 244 flow [2023-08-03 19:48:23,321 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=758, PETRI_DIFFERENCE_MINUEND_FLOW=232, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=244, PETRI_PLACES=64, PETRI_TRANSITIONS=61} [2023-08-03 19:48:23,323 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 10 predicate places. [2023-08-03 19:48:23,323 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 61 transitions, 244 flow [2023-08-03 19:48:23,323 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 314.6666666666667) internal successors, (944), 3 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 19:48:23,324 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:48:23,324 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 19:48:23,329 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 19:48:23,528 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 19:48:23,528 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 19:48:23,529 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:48:23,529 INFO L85 PathProgramCache]: Analyzing trace with hash 577905192, now seen corresponding path program 1 times [2023-08-03 19:48:23,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:48:23,529 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1330676121] [2023-08-03 19:48:23,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:48:23,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:48:23,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:48:23,584 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 19:48:23,585 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:48:23,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1330676121] [2023-08-03 19:48:23,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1330676121] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:48:23,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1357779055] [2023-08-03 19:48:23,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:48:23,585 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:48:23,585 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:48:23,591 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 19:48:23,594 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 19:48:23,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:48:23,690 INFO L262 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-03 19:48:23,691 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:48:23,704 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 19:48:23,704 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 19:48:23,719 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 19:48:23,720 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1357779055] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 19:48:23,720 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 19:48:23,720 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 5 [2023-08-03 19:48:23,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106261845] [2023-08-03 19:48:23,722 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 19:48:23,722 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 19:48:23,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:48:23,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 19:48:23,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-03 19:48:23,734 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 308 out of 758 [2023-08-03 19:48:23,735 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 61 transitions, 244 flow. Second operand has 5 states, 5 states have (on average 311.6) internal successors, (1558), 5 states have internal predecessors, (1558), 0 states have call successors, (0), 0 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 19:48:23,736 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:48:23,736 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 308 of 758 [2023-08-03 19:48:23,736 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:48:26,072 INFO L124 PetriNetUnfolderBase]: 16745/25469 cut-off events. [2023-08-03 19:48:26,073 INFO L125 PetriNetUnfolderBase]: For 4239/4239 co-relation queries the response was YES. [2023-08-03 19:48:26,161 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54203 conditions, 25469 events. 16745/25469 cut-off events. For 4239/4239 co-relation queries the response was YES. Maximal size of possible extension queue 836. Compared 159607 event pairs, 9446 based on Foata normal form. 8/24142 useless extension candidates. Maximal degree in co-relation 34067. Up to 23572 conditions per place. [2023-08-03 19:48:26,232 INFO L140 encePairwiseOnDemand]: 755/758 looper letters, 58 selfloop transitions, 3 changer transitions 0/68 dead transitions. [2023-08-03 19:48:26,232 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 68 transitions, 376 flow [2023-08-03 19:48:26,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 19:48:26,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 19:48:26,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1291 transitions. [2023-08-03 19:48:26,235 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4257915567282322 [2023-08-03 19:48:26,235 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1291 transitions. [2023-08-03 19:48:26,235 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1291 transitions. [2023-08-03 19:48:26,236 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:48:26,236 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1291 transitions. [2023-08-03 19:48:26,238 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 322.75) internal successors, (1291), 4 states have internal predecessors, (1291), 0 states have call successors, (0), 0 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 19:48:26,241 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 758.0) internal successors, (3790), 5 states have internal predecessors, (3790), 0 states have call successors, (0), 0 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 19:48:26,242 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 758.0) internal successors, (3790), 5 states have internal predecessors, (3790), 0 states have call successors, (0), 0 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 19:48:26,242 INFO L175 Difference]: Start difference. First operand has 64 places, 61 transitions, 244 flow. Second operand 4 states and 1291 transitions. [2023-08-03 19:48:26,242 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 68 transitions, 376 flow [2023-08-03 19:48:26,248 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 68 transitions, 374 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 19:48:26,249 INFO L231 Difference]: Finished difference. Result has 66 places, 60 transitions, 240 flow [2023-08-03 19:48:26,249 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=758, PETRI_DIFFERENCE_MINUEND_FLOW=234, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=240, PETRI_PLACES=66, PETRI_TRANSITIONS=60} [2023-08-03 19:48:26,250 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 12 predicate places. [2023-08-03 19:48:26,250 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 60 transitions, 240 flow [2023-08-03 19:48:26,251 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 311.6) internal successors, (1558), 5 states have internal predecessors, (1558), 0 states have call successors, (0), 0 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 19:48:26,251 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:48:26,251 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 19:48:26,256 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-08-03 19:48:26,456 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 19:48:26,456 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 19:48:26,456 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:48:26,456 INFO L85 PathProgramCache]: Analyzing trace with hash -1199068334, now seen corresponding path program 1 times [2023-08-03 19:48:26,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:48:26,457 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [666206274] [2023-08-03 19:48:26,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:48:26,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:48:26,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:48:26,538 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 19:48:26,538 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:48:26,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [666206274] [2023-08-03 19:48:26,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [666206274] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:48:26,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1537574976] [2023-08-03 19:48:26,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:48:26,539 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:48:26,539 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:48:26,540 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 19:48:26,556 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 19:48:26,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:48:26,630 INFO L262 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-03 19:48:26,632 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:48:26,648 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 19:48:26,648 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 19:48:26,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1537574976] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 19:48:26,648 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 19:48:26,649 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 6 [2023-08-03 19:48:26,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1636235480] [2023-08-03 19:48:26,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 19:48:26,649 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 19:48:26,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:48:26,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 19:48:26,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-03 19:48:26,660 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 308 out of 758 [2023-08-03 19:48:26,661 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 60 transitions, 240 flow. Second operand has 5 states, 5 states have (on average 311.6) internal successors, (1558), 5 states have internal predecessors, (1558), 0 states have call successors, (0), 0 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 19:48:26,661 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:48:26,662 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 308 of 758 [2023-08-03 19:48:26,662 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:48:28,924 INFO L124 PetriNetUnfolderBase]: 16553/25181 cut-off events. [2023-08-03 19:48:28,924 INFO L125 PetriNetUnfolderBase]: For 3835/3835 co-relation queries the response was YES. [2023-08-03 19:48:29,011 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53351 conditions, 25181 events. 16553/25181 cut-off events. For 3835/3835 co-relation queries the response was YES. Maximal size of possible extension queue 836. Compared 157713 event pairs, 766 based on Foata normal form. 64/23910 useless extension candidates. Maximal degree in co-relation 33649. Up to 22603 conditions per place. [2023-08-03 19:48:29,084 INFO L140 encePairwiseOnDemand]: 754/758 looper letters, 66 selfloop transitions, 4 changer transitions 0/76 dead transitions. [2023-08-03 19:48:29,085 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 76 transitions, 412 flow [2023-08-03 19:48:29,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-03 19:48:29,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-03 19:48:29,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1608 transitions. [2023-08-03 19:48:29,088 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42427440633245384 [2023-08-03 19:48:29,088 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1608 transitions. [2023-08-03 19:48:29,088 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1608 transitions. [2023-08-03 19:48:29,089 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:48:29,089 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1608 transitions. [2023-08-03 19:48:29,092 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 321.6) internal successors, (1608), 5 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 19:48:29,096 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 758.0) internal successors, (4548), 6 states have internal predecessors, (4548), 0 states have call successors, (0), 0 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 19:48:29,096 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 758.0) internal successors, (4548), 6 states have internal predecessors, (4548), 0 states have call successors, (0), 0 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 19:48:29,096 INFO L175 Difference]: Start difference. First operand has 66 places, 60 transitions, 240 flow. Second operand 5 states and 1608 transitions. [2023-08-03 19:48:29,096 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 76 transitions, 412 flow [2023-08-03 19:48:29,106 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 76 transitions, 398 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-08-03 19:48:29,107 INFO L231 Difference]: Finished difference. Result has 66 places, 60 transitions, 243 flow [2023-08-03 19:48:29,107 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=758, PETRI_DIFFERENCE_MINUEND_FLOW=220, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=243, PETRI_PLACES=66, PETRI_TRANSITIONS=60} [2023-08-03 19:48:29,108 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 12 predicate places. [2023-08-03 19:48:29,108 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 60 transitions, 243 flow [2023-08-03 19:48:29,109 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 311.6) internal successors, (1558), 5 states have internal predecessors, (1558), 0 states have call successors, (0), 0 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 19:48:29,109 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:48:29,109 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:48:29,113 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 19:48:29,313 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 19:48:29,313 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 19:48:29,313 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:48:29,314 INFO L85 PathProgramCache]: Analyzing trace with hash 758459598, now seen corresponding path program 1 times [2023-08-03 19:48:29,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:48:29,314 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [632134515] [2023-08-03 19:48:29,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:48:29,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:48:29,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:48:29,368 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 19:48:29,368 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:48:29,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [632134515] [2023-08-03 19:48:29,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [632134515] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:48:29,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1275378751] [2023-08-03 19:48:29,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:48:29,368 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:48:29,368 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:48:29,370 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 19:48:29,372 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 19:48:29,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:48:29,456 INFO L262 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-03 19:48:29,457 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:48:29,463 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 19:48:29,463 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 19:48:29,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1275378751] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 19:48:29,463 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 19:48:29,463 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2023-08-03 19:48:29,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [175647329] [2023-08-03 19:48:29,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 19:48:29,464 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 19:48:29,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:48:29,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 19:48:29,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-03 19:48:29,473 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 309 out of 758 [2023-08-03 19:48:29,474 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 60 transitions, 243 flow. Second operand has 3 states, 3 states have (on average 316.3333333333333) internal successors, (949), 3 states have internal predecessors, (949), 0 states have call successors, (0), 0 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 19:48:29,474 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:48:29,474 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 309 of 758 [2023-08-03 19:48:29,474 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:48:31,895 INFO L124 PetriNetUnfolderBase]: 16344/25328 cut-off events. [2023-08-03 19:48:31,895 INFO L125 PetriNetUnfolderBase]: For 4135/4135 co-relation queries the response was YES. [2023-08-03 19:48:31,945 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53433 conditions, 25328 events. 16344/25328 cut-off events. For 4135/4135 co-relation queries the response was YES. Maximal size of possible extension queue 758. Compared 163750 event pairs, 10450 based on Foata normal form. 0/24377 useless extension candidates. Maximal degree in co-relation 34552. Up to 17668 conditions per place. [2023-08-03 19:48:32,004 INFO L140 encePairwiseOnDemand]: 755/758 looper letters, 66 selfloop transitions, 2 changer transitions 0/74 dead transitions. [2023-08-03 19:48:32,004 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 74 transitions, 419 flow [2023-08-03 19:48:32,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 19:48:32,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 19:48:32,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 991 transitions. [2023-08-03 19:48:32,006 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43579595426561124 [2023-08-03 19:48:32,006 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 991 transitions. [2023-08-03 19:48:32,006 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 991 transitions. [2023-08-03 19:48:32,006 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:48:32,006 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 991 transitions. [2023-08-03 19:48:32,008 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 330.3333333333333) internal successors, (991), 3 states have internal predecessors, (991), 0 states have call successors, (0), 0 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 19:48:32,010 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 758.0) internal successors, (3032), 4 states have internal predecessors, (3032), 0 states have call successors, (0), 0 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 19:48:32,011 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 758.0) internal successors, (3032), 4 states have internal predecessors, (3032), 0 states have call successors, (0), 0 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 19:48:32,011 INFO L175 Difference]: Start difference. First operand has 66 places, 60 transitions, 243 flow. Second operand 3 states and 991 transitions. [2023-08-03 19:48:32,011 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 74 transitions, 419 flow [2023-08-03 19:48:32,017 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 74 transitions, 412 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-08-03 19:48:32,018 INFO L231 Difference]: Finished difference. Result has 67 places, 61 transitions, 248 flow [2023-08-03 19:48:32,018 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=758, PETRI_DIFFERENCE_MINUEND_FLOW=236, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=248, PETRI_PLACES=67, PETRI_TRANSITIONS=61} [2023-08-03 19:48:32,018 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 13 predicate places. [2023-08-03 19:48:32,018 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 61 transitions, 248 flow [2023-08-03 19:48:32,019 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 316.3333333333333) internal successors, (949), 3 states have internal predecessors, (949), 0 states have call successors, (0), 0 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 19:48:32,019 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:48:32,019 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:48:32,027 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-08-03 19:48:32,223 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 19:48:32,224 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 19:48:32,224 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:48:32,224 INFO L85 PathProgramCache]: Analyzing trace with hash -1371889589, now seen corresponding path program 1 times [2023-08-03 19:48:32,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:48:32,224 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1998466927] [2023-08-03 19:48:32,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:48:32,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:48:32,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:48:32,301 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 19:48:32,302 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:48:32,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1998466927] [2023-08-03 19:48:32,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1998466927] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:48:32,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [487039194] [2023-08-03 19:48:32,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:48:32,303 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:48:32,303 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:48:32,306 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 19:48:32,317 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 19:48:32,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:48:32,419 INFO L262 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-03 19:48:32,424 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:48:32,431 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-08-03 19:48:32,431 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 19:48:32,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [487039194] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 19:48:32,431 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 19:48:32,431 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2023-08-03 19:48:32,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487396522] [2023-08-03 19:48:32,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 19:48:32,433 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 19:48:32,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:48:32,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 19:48:32,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-03 19:48:32,441 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 309 out of 758 [2023-08-03 19:48:32,442 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 61 transitions, 248 flow. Second operand has 3 states, 3 states have (on average 317.6666666666667) internal successors, (953), 3 states have internal predecessors, (953), 0 states have call successors, (0), 0 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 19:48:32,442 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:48:32,442 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 309 of 758 [2023-08-03 19:48:32,442 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:48:34,883 INFO L124 PetriNetUnfolderBase]: 16615/25971 cut-off events. [2023-08-03 19:48:34,883 INFO L125 PetriNetUnfolderBase]: For 5291/5291 co-relation queries the response was YES. [2023-08-03 19:48:34,970 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57005 conditions, 25971 events. 16615/25971 cut-off events. For 5291/5291 co-relation queries the response was YES. Maximal size of possible extension queue 728. Compared 169711 event pairs, 12321 based on Foata normal form. 0/25733 useless extension candidates. Maximal degree in co-relation 37425. Up to 20542 conditions per place. [2023-08-03 19:48:35,043 INFO L140 encePairwiseOnDemand]: 755/758 looper letters, 67 selfloop transitions, 2 changer transitions 0/75 dead transitions. [2023-08-03 19:48:35,044 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 75 transitions, 426 flow [2023-08-03 19:48:35,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 19:48:35,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 19:48:35,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 991 transitions. [2023-08-03 19:48:35,047 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43579595426561124 [2023-08-03 19:48:35,047 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 991 transitions. [2023-08-03 19:48:35,047 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 991 transitions. [2023-08-03 19:48:35,047 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:48:35,047 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 991 transitions. [2023-08-03 19:48:35,049 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 330.3333333333333) internal successors, (991), 3 states have internal predecessors, (991), 0 states have call successors, (0), 0 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 19:48:35,051 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 758.0) internal successors, (3032), 4 states have internal predecessors, (3032), 0 states have call successors, (0), 0 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 19:48:35,052 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 758.0) internal successors, (3032), 4 states have internal predecessors, (3032), 0 states have call successors, (0), 0 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 19:48:35,052 INFO L175 Difference]: Start difference. First operand has 67 places, 61 transitions, 248 flow. Second operand 3 states and 991 transitions. [2023-08-03 19:48:35,052 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 75 transitions, 426 flow [2023-08-03 19:48:35,248 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 75 transitions, 424 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 19:48:35,250 INFO L231 Difference]: Finished difference. Result has 69 places, 62 transitions, 258 flow [2023-08-03 19:48:35,250 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=758, PETRI_DIFFERENCE_MINUEND_FLOW=246, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=258, PETRI_PLACES=69, PETRI_TRANSITIONS=62} [2023-08-03 19:48:35,250 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 15 predicate places. [2023-08-03 19:48:35,250 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 62 transitions, 258 flow [2023-08-03 19:48:35,251 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 317.6666666666667) internal successors, (953), 3 states have internal predecessors, (953), 0 states have call successors, (0), 0 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 19:48:35,251 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:48:35,251 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:48:35,260 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-08-03 19:48:35,455 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 19:48:35,456 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 19:48:35,456 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:48:35,456 INFO L85 PathProgramCache]: Analyzing trace with hash -1729858751, now seen corresponding path program 1 times [2023-08-03 19:48:35,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:48:35,456 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [51604879] [2023-08-03 19:48:35,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:48:35,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:48:35,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:48:35,544 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-08-03 19:48:35,545 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:48:35,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [51604879] [2023-08-03 19:48:35,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [51604879] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:48:35,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [304783650] [2023-08-03 19:48:35,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:48:35,545 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:48:35,545 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:48:35,546 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 19:48:35,556 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 19:48:35,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:48:35,642 INFO L262 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-03 19:48:35,643 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:48:35,653 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-08-03 19:48:35,653 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 19:48:35,665 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-08-03 19:48:35,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [304783650] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 19:48:35,666 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 19:48:35,666 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 5 [2023-08-03 19:48:35,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718326983] [2023-08-03 19:48:35,666 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 19:48:35,666 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 19:48:35,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:48:35,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 19:48:35,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-03 19:48:35,679 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 308 out of 758 [2023-08-03 19:48:35,680 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 62 transitions, 258 flow. Second operand has 5 states, 5 states have (on average 314.8) internal successors, (1574), 5 states have internal predecessors, (1574), 0 states have call successors, (0), 0 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 19:48:35,680 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:48:35,680 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 308 of 758 [2023-08-03 19:48:35,680 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:48:38,218 INFO L124 PetriNetUnfolderBase]: 16215/25347 cut-off events. [2023-08-03 19:48:38,218 INFO L125 PetriNetUnfolderBase]: For 5005/5005 co-relation queries the response was YES. [2023-08-03 19:48:38,303 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56386 conditions, 25347 events. 16215/25347 cut-off events. For 5005/5005 co-relation queries the response was YES. Maximal size of possible extension queue 702. Compared 164112 event pairs, 9491 based on Foata normal form. 32/25374 useless extension candidates. Maximal degree in co-relation 42454. Up to 22968 conditions per place. [2023-08-03 19:48:38,367 INFO L140 encePairwiseOnDemand]: 755/758 looper letters, 64 selfloop transitions, 3 changer transitions 0/73 dead transitions. [2023-08-03 19:48:38,368 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 73 transitions, 410 flow [2023-08-03 19:48:38,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 19:48:38,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 19:48:38,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1295 transitions. [2023-08-03 19:48:38,370 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4271108179419525 [2023-08-03 19:48:38,370 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1295 transitions. [2023-08-03 19:48:38,370 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1295 transitions. [2023-08-03 19:48:38,370 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:48:38,370 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1295 transitions. [2023-08-03 19:48:38,372 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 323.75) internal successors, (1295), 4 states have internal predecessors, (1295), 0 states have call successors, (0), 0 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 19:48:38,376 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 758.0) internal successors, (3790), 5 states have internal predecessors, (3790), 0 states have call successors, (0), 0 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 19:48:38,377 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 758.0) internal successors, (3790), 5 states have internal predecessors, (3790), 0 states have call successors, (0), 0 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 19:48:38,377 INFO L175 Difference]: Start difference. First operand has 69 places, 62 transitions, 258 flow. Second operand 4 states and 1295 transitions. [2023-08-03 19:48:38,377 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 73 transitions, 410 flow [2023-08-03 19:48:38,604 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 73 transitions, 408 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 19:48:38,605 INFO L231 Difference]: Finished difference. Result has 71 places, 61 transitions, 254 flow [2023-08-03 19:48:38,605 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=758, PETRI_DIFFERENCE_MINUEND_FLOW=248, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=254, PETRI_PLACES=71, PETRI_TRANSITIONS=61} [2023-08-03 19:48:38,605 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 17 predicate places. [2023-08-03 19:48:38,606 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 61 transitions, 254 flow [2023-08-03 19:48:38,606 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 314.8) internal successors, (1574), 5 states have internal predecessors, (1574), 0 states have call successors, (0), 0 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 19:48:38,606 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:48:38,606 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:48:38,610 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 19:48:38,806 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 19:48:38,807 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 19:48:38,807 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:48:38,807 INFO L85 PathProgramCache]: Analyzing trace with hash -1841885682, now seen corresponding path program 1 times [2023-08-03 19:48:38,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:48:38,807 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [42949914] [2023-08-03 19:48:38,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:48:38,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:48:38,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:48:38,873 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 19:48:38,873 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:48:38,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [42949914] [2023-08-03 19:48:38,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [42949914] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:48:38,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [497597802] [2023-08-03 19:48:38,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:48:38,874 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:48:38,874 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:48:38,875 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 19:48:38,901 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 19:48:38,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:48:38,995 INFO L262 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-03 19:48:38,997 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:48:39,009 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 19:48:39,009 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 19:48:39,021 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 19:48:39,021 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [497597802] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 19:48:39,021 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 19:48:39,022 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 5 [2023-08-03 19:48:39,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739656877] [2023-08-03 19:48:39,022 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 19:48:39,022 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 19:48:39,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:48:39,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 19:48:39,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-03 19:48:39,036 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 308 out of 758 [2023-08-03 19:48:39,037 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 61 transitions, 254 flow. Second operand has 5 states, 5 states have (on average 315.0) internal successors, (1575), 5 states have internal predecessors, (1575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:48:39,037 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:48:39,037 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 308 of 758 [2023-08-03 19:48:39,037 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:48:40,573 INFO L124 PetriNetUnfolderBase]: 10315/16383 cut-off events. [2023-08-03 19:48:40,573 INFO L125 PetriNetUnfolderBase]: For 3568/3568 co-relation queries the response was YES. [2023-08-03 19:48:40,612 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36473 conditions, 16383 events. 10315/16383 cut-off events. For 3568/3568 co-relation queries the response was YES. Maximal size of possible extension queue 465. Compared 98895 event pairs, 5374 based on Foata normal form. 192/16570 useless extension candidates. Maximal degree in co-relation 31654. Up to 9425 conditions per place. [2023-08-03 19:48:40,653 INFO L140 encePairwiseOnDemand]: 754/758 looper letters, 71 selfloop transitions, 4 changer transitions 0/81 dead transitions. [2023-08-03 19:48:40,653 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 81 transitions, 456 flow [2023-08-03 19:48:40,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 19:48:40,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 19:48:40,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1303 transitions. [2023-08-03 19:48:40,655 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42974934036939316 [2023-08-03 19:48:40,656 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1303 transitions. [2023-08-03 19:48:40,656 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1303 transitions. [2023-08-03 19:48:40,656 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:48:40,656 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1303 transitions. [2023-08-03 19:48:40,657 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 325.75) internal successors, (1303), 4 states have internal predecessors, (1303), 0 states have call successors, (0), 0 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 19:48:40,660 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 758.0) internal successors, (3790), 5 states have internal predecessors, (3790), 0 states have call successors, (0), 0 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 19:48:40,660 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 758.0) internal successors, (3790), 5 states have internal predecessors, (3790), 0 states have call successors, (0), 0 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 19:48:40,660 INFO L175 Difference]: Start difference. First operand has 71 places, 61 transitions, 254 flow. Second operand 4 states and 1303 transitions. [2023-08-03 19:48:40,660 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 81 transitions, 456 flow [2023-08-03 19:48:40,745 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 81 transitions, 450 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-03 19:48:40,746 INFO L231 Difference]: Finished difference. Result has 73 places, 62 transitions, 268 flow [2023-08-03 19:48:40,747 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=758, PETRI_DIFFERENCE_MINUEND_FLOW=248, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=268, PETRI_PLACES=73, PETRI_TRANSITIONS=62} [2023-08-03 19:48:40,747 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 19 predicate places. [2023-08-03 19:48:40,747 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 62 transitions, 268 flow [2023-08-03 19:48:40,747 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 315.0) internal successors, (1575), 5 states have internal predecessors, (1575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:48:40,747 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:48:40,748 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:48:40,753 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 19:48:40,952 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 19:48:40,953 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 19:48:40,953 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:48:40,953 INFO L85 PathProgramCache]: Analyzing trace with hash 481417368, now seen corresponding path program 1 times [2023-08-03 19:48:40,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:48:40,953 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1566166107] [2023-08-03 19:48:40,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:48:40,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:48:40,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:48:41,074 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-08-03 19:48:41,074 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:48:41,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1566166107] [2023-08-03 19:48:41,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1566166107] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:48:41,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2097592408] [2023-08-03 19:48:41,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:48:41,075 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:48:41,075 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:48:41,076 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 19:48:41,096 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 19:48:41,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:48:41,188 INFO L262 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-03 19:48:41,190 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:48:41,200 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-08-03 19:48:41,200 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 19:48:41,213 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-08-03 19:48:41,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2097592408] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 19:48:41,213 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 19:48:41,213 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 5 [2023-08-03 19:48:41,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327342437] [2023-08-03 19:48:41,213 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 19:48:41,213 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 19:48:41,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:48:41,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 19:48:41,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-03 19:48:41,226 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 308 out of 758 [2023-08-03 19:48:41,227 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 62 transitions, 268 flow. Second operand has 5 states, 5 states have (on average 315.4) internal successors, (1577), 5 states have internal predecessors, (1577), 0 states have call successors, (0), 0 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 19:48:41,228 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:48:41,228 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 308 of 758 [2023-08-03 19:48:41,228 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:48:42,647 INFO L124 PetriNetUnfolderBase]: 9415/14912 cut-off events. [2023-08-03 19:48:42,648 INFO L125 PetriNetUnfolderBase]: For 6527/6527 co-relation queries the response was YES. [2023-08-03 19:48:42,676 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35831 conditions, 14912 events. 9415/14912 cut-off events. For 6527/6527 co-relation queries the response was YES. Maximal size of possible extension queue 409. Compared 88020 event pairs, 5942 based on Foata normal form. 233/15140 useless extension candidates. Maximal degree in co-relation 34761. Up to 8732 conditions per place. [2023-08-03 19:48:42,704 INFO L140 encePairwiseOnDemand]: 754/758 looper letters, 72 selfloop transitions, 4 changer transitions 0/82 dead transitions. [2023-08-03 19:48:42,704 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 82 transitions, 472 flow [2023-08-03 19:48:42,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 19:48:42,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 19:48:42,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1303 transitions. [2023-08-03 19:48:42,706 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42974934036939316 [2023-08-03 19:48:42,707 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1303 transitions. [2023-08-03 19:48:42,707 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1303 transitions. [2023-08-03 19:48:42,707 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:48:42,707 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1303 transitions. [2023-08-03 19:48:42,708 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 325.75) internal successors, (1303), 4 states have internal predecessors, (1303), 0 states have call successors, (0), 0 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 19:48:42,710 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 758.0) internal successors, (3790), 5 states have internal predecessors, (3790), 0 states have call successors, (0), 0 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 19:48:42,711 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 758.0) internal successors, (3790), 5 states have internal predecessors, (3790), 0 states have call successors, (0), 0 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 19:48:42,711 INFO L175 Difference]: Start difference. First operand has 73 places, 62 transitions, 268 flow. Second operand 4 states and 1303 transitions. [2023-08-03 19:48:42,711 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 82 transitions, 472 flow [2023-08-03 19:48:42,767 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 82 transitions, 468 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-03 19:48:42,768 INFO L231 Difference]: Finished difference. Result has 77 places, 63 transitions, 284 flow [2023-08-03 19:48:42,768 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=758, PETRI_DIFFERENCE_MINUEND_FLOW=264, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=284, PETRI_PLACES=77, PETRI_TRANSITIONS=63} [2023-08-03 19:48:42,768 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 23 predicate places. [2023-08-03 19:48:42,768 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 63 transitions, 284 flow [2023-08-03 19:48:42,769 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 315.4) internal successors, (1577), 5 states have internal predecessors, (1577), 0 states have call successors, (0), 0 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 19:48:42,769 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:48:42,769 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:48:42,773 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 19:48:42,972 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 19:48:42,973 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 19:48:42,973 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:48:42,973 INFO L85 PathProgramCache]: Analyzing trace with hash -95894056, now seen corresponding path program 1 times [2023-08-03 19:48:42,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:48:42,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1457628833] [2023-08-03 19:48:42,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:48:42,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:48:42,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:48:43,050 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-08-03 19:48:43,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:48:43,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1457628833] [2023-08-03 19:48:43,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1457628833] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:48:43,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1458410292] [2023-08-03 19:48:43,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:48:43,051 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:48:43,051 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:48:43,052 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 19:48:43,079 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 19:48:43,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:48:43,184 INFO L262 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-03 19:48:43,188 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:48:43,203 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-08-03 19:48:43,203 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 19:48:43,216 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-08-03 19:48:43,217 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1458410292] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 19:48:43,217 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 19:48:43,217 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 4 [2023-08-03 19:48:43,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [270413725] [2023-08-03 19:48:43,217 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 19:48:43,217 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 19:48:43,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:48:43,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 19:48:43,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-03 19:48:43,229 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 308 out of 758 [2023-08-03 19:48:43,230 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 63 transitions, 284 flow. Second operand has 5 states, 5 states have (on average 315.8) internal successors, (1579), 5 states have internal predecessors, (1579), 0 states have call successors, (0), 0 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 19:48:43,230 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:48:43,230 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 308 of 758 [2023-08-03 19:48:43,230 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:48:44,697 INFO L124 PetriNetUnfolderBase]: 9409/14895 cut-off events. [2023-08-03 19:48:44,697 INFO L125 PetriNetUnfolderBase]: For 7481/7481 co-relation queries the response was YES. [2023-08-03 19:48:44,755 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37500 conditions, 14895 events. 9409/14895 cut-off events. For 7481/7481 co-relation queries the response was YES. Maximal size of possible extension queue 409. Compared 87869 event pairs, 8414 based on Foata normal form. 13/14903 useless extension candidates. Maximal degree in co-relation 36401. Up to 13453 conditions per place. [2023-08-03 19:48:44,786 INFO L140 encePairwiseOnDemand]: 754/758 looper letters, 71 selfloop transitions, 3 changer transitions 3/83 dead transitions. [2023-08-03 19:48:44,787 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 83 transitions, 490 flow [2023-08-03 19:48:44,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 19:48:44,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 19:48:44,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1303 transitions. [2023-08-03 19:48:44,789 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42974934036939316 [2023-08-03 19:48:44,789 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1303 transitions. [2023-08-03 19:48:44,789 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1303 transitions. [2023-08-03 19:48:44,789 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:48:44,789 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1303 transitions. [2023-08-03 19:48:44,791 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 325.75) internal successors, (1303), 4 states have internal predecessors, (1303), 0 states have call successors, (0), 0 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 19:48:44,793 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 758.0) internal successors, (3790), 5 states have internal predecessors, (3790), 0 states have call successors, (0), 0 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 19:48:44,793 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 758.0) internal successors, (3790), 5 states have internal predecessors, (3790), 0 states have call successors, (0), 0 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 19:48:44,793 INFO L175 Difference]: Start difference. First operand has 77 places, 63 transitions, 284 flow. Second operand 4 states and 1303 transitions. [2023-08-03 19:48:44,793 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 83 transitions, 490 flow [2023-08-03 19:48:44,921 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 83 transitions, 486 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-03 19:48:44,922 INFO L231 Difference]: Finished difference. Result has 81 places, 61 transitions, 282 flow [2023-08-03 19:48:44,922 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=758, PETRI_DIFFERENCE_MINUEND_FLOW=280, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=282, PETRI_PLACES=81, PETRI_TRANSITIONS=61} [2023-08-03 19:48:44,922 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 27 predicate places. [2023-08-03 19:48:44,922 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 61 transitions, 282 flow [2023-08-03 19:48:44,922 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 315.8) internal successors, (1579), 5 states have internal predecessors, (1579), 0 states have call successors, (0), 0 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 19:48:44,922 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:48:44,923 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:48:44,929 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-08-03 19:48:45,123 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 19:48:45,123 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 19:48:45,123 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:48:45,123 INFO L85 PathProgramCache]: Analyzing trace with hash 104624854, now seen corresponding path program 1 times [2023-08-03 19:48:45,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:48:45,124 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [216318221] [2023-08-03 19:48:45,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:48:45,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:48:45,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:48:46,134 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-08-03 19:48:46,135 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:48:46,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [216318221] [2023-08-03 19:48:46,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [216318221] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:48:46,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1426456545] [2023-08-03 19:48:46,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:48:46,135 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:48:46,135 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:48:46,136 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 19:48:46,139 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 19:48:46,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:48:46,283 INFO L262 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-03 19:48:46,286 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:48:49,459 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2023-08-03 19:48:49,459 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 19:48:50,270 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2023-08-03 19:48:50,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1426456545] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 19:48:50,270 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 19:48:50,270 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 11 [2023-08-03 19:48:50,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497744567] [2023-08-03 19:48:50,270 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 19:48:50,271 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-03 19:48:50,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:48:50,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-03 19:48:50,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2023-08-03 19:48:50,816 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 276 out of 758 [2023-08-03 19:48:50,818 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 61 transitions, 282 flow. Second operand has 12 states, 12 states have (on average 284.3333333333333) internal successors, (3412), 12 states have internal predecessors, (3412), 0 states have call successors, (0), 0 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 19:48:50,818 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:48:50,818 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 276 of 758 [2023-08-03 19:48:50,818 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:48:54,050 INFO L124 PetriNetUnfolderBase]: 14536/23003 cut-off events. [2023-08-03 19:48:54,050 INFO L125 PetriNetUnfolderBase]: For 13363/13363 co-relation queries the response was YES. [2023-08-03 19:48:54,136 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56648 conditions, 23003 events. 14536/23003 cut-off events. For 13363/13363 co-relation queries the response was YES. Maximal size of possible extension queue 627. Compared 150348 event pairs, 3224 based on Foata normal form. 1/22931 useless extension candidates. Maximal degree in co-relation 56230. Up to 7483 conditions per place. [2023-08-03 19:48:54,182 INFO L140 encePairwiseOnDemand]: 750/758 looper letters, 220 selfloop transitions, 25 changer transitions 1/252 dead transitions. [2023-08-03 19:48:54,182 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 252 transitions, 1682 flow [2023-08-03 19:48:54,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-03 19:48:54,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-03 19:48:54,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2704 transitions. [2023-08-03 19:48:54,186 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.396364702433304 [2023-08-03 19:48:54,186 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2704 transitions. [2023-08-03 19:48:54,186 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2704 transitions. [2023-08-03 19:48:54,187 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:48:54,187 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2704 transitions. [2023-08-03 19:48:54,190 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 300.44444444444446) internal successors, (2704), 9 states have internal predecessors, (2704), 0 states have call successors, (0), 0 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 19:48:54,195 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 758.0) internal successors, (7580), 10 states have internal predecessors, (7580), 0 states have call successors, (0), 0 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 19:48:54,195 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 758.0) internal successors, (7580), 10 states have internal predecessors, (7580), 0 states have call successors, (0), 0 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 19:48:54,195 INFO L175 Difference]: Start difference. First operand has 81 places, 61 transitions, 282 flow. Second operand 9 states and 2704 transitions. [2023-08-03 19:48:54,195 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 252 transitions, 1682 flow [2023-08-03 19:48:54,524 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 252 transitions, 1636 flow, removed 3 selfloop flow, removed 4 redundant places. [2023-08-03 19:48:54,526 INFO L231 Difference]: Finished difference. Result has 89 places, 91 transitions, 443 flow [2023-08-03 19:48:54,526 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=758, PETRI_DIFFERENCE_MINUEND_FLOW=272, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=443, PETRI_PLACES=89, PETRI_TRANSITIONS=91} [2023-08-03 19:48:54,527 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 35 predicate places. [2023-08-03 19:48:54,527 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 91 transitions, 443 flow [2023-08-03 19:48:54,528 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 284.3333333333333) internal successors, (3412), 12 states have internal predecessors, (3412), 0 states have call successors, (0), 0 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 19:48:54,528 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:48:54,528 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:48:54,532 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 19:48:54,728 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 19:48:54,728 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 19:48:54,728 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:48:54,729 INFO L85 PathProgramCache]: Analyzing trace with hash -1963823198, now seen corresponding path program 1 times [2023-08-03 19:48:54,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:48:54,729 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1974455881] [2023-08-03 19:48:54,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:48:54,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:48:54,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:48:55,691 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2023-08-03 19:48:55,691 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:48:55,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1974455881] [2023-08-03 19:48:55,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1974455881] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:48:55,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [25244253] [2023-08-03 19:48:55,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:48:55,691 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:48:55,691 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:48:55,693 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 19:48:55,722 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 19:48:55,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:48:55,834 INFO L262 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-03 19:48:55,838 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:48:58,225 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-08-03 19:48:58,225 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 19:48:58,800 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-08-03 19:48:58,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [25244253] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 19:48:58,800 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 19:48:58,800 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 10 [2023-08-03 19:48:58,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1010160625] [2023-08-03 19:48:58,800 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 19:48:58,800 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-08-03 19:48:58,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:48:58,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-08-03 19:48:58,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2023-08-03 19:48:59,218 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 276 out of 758 [2023-08-03 19:48:59,220 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 91 transitions, 443 flow. Second operand has 11 states, 11 states have (on average 284.0) internal successors, (3124), 11 states have internal predecessors, (3124), 0 states have call successors, (0), 0 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 19:48:59,220 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:48:59,220 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 276 of 758 [2023-08-03 19:48:59,220 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:49:03,500 INFO L124 PetriNetUnfolderBase]: 21992/34872 cut-off events. [2023-08-03 19:49:03,500 INFO L125 PetriNetUnfolderBase]: For 58744/58744 co-relation queries the response was YES. [2023-08-03 19:49:03,688 INFO L83 FinitePrefix]: Finished finitePrefix Result has 114884 conditions, 34872 events. 21992/34872 cut-off events. For 58744/58744 co-relation queries the response was YES. Maximal size of possible extension queue 991. Compared 248462 event pairs, 2401 based on Foata normal form. 1/34712 useless extension candidates. Maximal degree in co-relation 114782. Up to 12845 conditions per place. [2023-08-03 19:49:03,742 INFO L140 encePairwiseOnDemand]: 750/758 looper letters, 158 selfloop transitions, 19 changer transitions 59/242 dead transitions. [2023-08-03 19:49:03,742 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 242 transitions, 1695 flow [2023-08-03 19:49:03,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-03 19:49:03,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-03 19:49:03,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2407 transitions. [2023-08-03 19:49:03,749 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3969327176781003 [2023-08-03 19:49:03,749 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2407 transitions. [2023-08-03 19:49:03,749 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2407 transitions. [2023-08-03 19:49:03,750 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:49:03,750 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2407 transitions. [2023-08-03 19:49:03,753 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 300.875) internal successors, (2407), 8 states have internal predecessors, (2407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:49:03,757 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 758.0) internal successors, (6822), 9 states have internal predecessors, (6822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:49:03,758 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 758.0) internal successors, (6822), 9 states have internal predecessors, (6822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:49:03,758 INFO L175 Difference]: Start difference. First operand has 89 places, 91 transitions, 443 flow. Second operand 8 states and 2407 transitions. [2023-08-03 19:49:03,758 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 242 transitions, 1695 flow [2023-08-03 19:49:04,577 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 242 transitions, 1694 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 19:49:04,579 INFO L231 Difference]: Finished difference. Result has 98 places, 85 transitions, 474 flow [2023-08-03 19:49:04,579 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=758, PETRI_DIFFERENCE_MINUEND_FLOW=442, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=474, PETRI_PLACES=98, PETRI_TRANSITIONS=85} [2023-08-03 19:49:04,579 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 44 predicate places. [2023-08-03 19:49:04,579 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 85 transitions, 474 flow [2023-08-03 19:49:04,580 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 284.0) internal successors, (3124), 11 states have internal predecessors, (3124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:49:04,580 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:49:04,580 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:49:04,585 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 19:49:04,780 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 19:49:04,780 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 1 more)] === [2023-08-03 19:49:04,781 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:49:04,781 INFO L85 PathProgramCache]: Analyzing trace with hash -1816764058, now seen corresponding path program 1 times [2023-08-03 19:49:04,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:49:04,781 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [854960819] [2023-08-03 19:49:04,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:49:04,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:49:04,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:49:05,538 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-08-03 19:49:05,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:49:05,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [854960819] [2023-08-03 19:49:05,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [854960819] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:49:05,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1644418312] [2023-08-03 19:49:05,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:49:05,539 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:49:05,539 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:49:05,541 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 19:49:05,564 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 19:49:05,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:49:05,683 INFO L262 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 9 conjunts are in the unsatisfiable core [2023-08-03 19:49:05,686 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:49:07,596 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-08-03 19:49:07,596 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 19:49:08,053 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-08-03 19:49:08,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1644418312] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 19:49:08,053 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 19:49:08,053 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5, 4] total 11 [2023-08-03 19:49:08,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269499804] [2023-08-03 19:49:08,053 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 19:49:08,054 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-03 19:49:08,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:49:08,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-03 19:49:08,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2023-08-03 19:49:08,545 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 280 out of 758 [2023-08-03 19:49:08,547 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 85 transitions, 474 flow. Second operand has 12 states, 12 states have (on average 286.75) internal successors, (3441), 12 states have internal predecessors, (3441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:49:08,547 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:49:08,547 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 280 of 758 [2023-08-03 19:49:08,547 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:49:12,134 INFO L124 PetriNetUnfolderBase]: 14128/25128 cut-off events. [2023-08-03 19:49:12,134 INFO L125 PetriNetUnfolderBase]: For 66460/66460 co-relation queries the response was YES. [2023-08-03 19:49:12,256 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88430 conditions, 25128 events. 14128/25128 cut-off events. For 66460/66460 co-relation queries the response was YES. Maximal size of possible extension queue 836. Compared 201794 event pairs, 2186 based on Foata normal form. 1/25040 useless extension candidates. Maximal degree in co-relation 88378. Up to 9915 conditions per place. [2023-08-03 19:49:12,300 INFO L140 encePairwiseOnDemand]: 750/758 looper letters, 218 selfloop transitions, 21 changer transitions 26/271 dead transitions. [2023-08-03 19:49:12,300 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 271 transitions, 1987 flow [2023-08-03 19:49:12,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-03 19:49:12,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-03 19:49:12,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2743 transitions. [2023-08-03 19:49:12,305 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4020815010260921 [2023-08-03 19:49:12,305 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2743 transitions. [2023-08-03 19:49:12,305 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2743 transitions. [2023-08-03 19:49:12,306 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:49:12,306 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2743 transitions. [2023-08-03 19:49:12,309 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 304.77777777777777) internal successors, (2743), 9 states have internal predecessors, (2743), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:49:12,312 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 758.0) internal successors, (7580), 10 states have internal predecessors, (7580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:49:12,312 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 758.0) internal successors, (7580), 10 states have internal predecessors, (7580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:49:12,312 INFO L175 Difference]: Start difference. First operand has 98 places, 85 transitions, 474 flow. Second operand 9 states and 2743 transitions. [2023-08-03 19:49:12,312 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 271 transitions, 1987 flow [2023-08-03 19:49:12,794 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 271 transitions, 1915 flow, removed 22 selfloop flow, removed 6 redundant places. [2023-08-03 19:49:12,797 INFO L231 Difference]: Finished difference. Result has 103 places, 91 transitions, 552 flow [2023-08-03 19:49:12,797 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=758, PETRI_DIFFERENCE_MINUEND_FLOW=430, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=552, PETRI_PLACES=103, PETRI_TRANSITIONS=91} [2023-08-03 19:49:12,797 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 49 predicate places. [2023-08-03 19:49:12,798 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 91 transitions, 552 flow [2023-08-03 19:49:12,798 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 286.75) internal successors, (3441), 12 states have internal predecessors, (3441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:49:12,798 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:49:12,798 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:49:12,812 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 19:49:13,003 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 19:49:13,003 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 1 more)] === [2023-08-03 19:49:13,003 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:49:13,003 INFO L85 PathProgramCache]: Analyzing trace with hash -1720724322, now seen corresponding path program 1 times [2023-08-03 19:49:13,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:49:13,003 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [137776450] [2023-08-03 19:49:13,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:49:13,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:49:13,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:49:13,800 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-08-03 19:49:13,800 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:49:13,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [137776450] [2023-08-03 19:49:13,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [137776450] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:49:13,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1802136886] [2023-08-03 19:49:13,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:49:13,801 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:49:13,801 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:49:13,805 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 19:49:13,834 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 19:49:13,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:49:13,951 INFO L262 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-03 19:49:13,953 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:49:15,867 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-08-03 19:49:15,868 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 19:49:16,287 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-08-03 19:49:16,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1802136886] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 19:49:16,287 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 19:49:16,287 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2023-08-03 19:49:16,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880313836] [2023-08-03 19:49:16,287 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 19:49:16,288 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-08-03 19:49:16,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:49:16,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-08-03 19:49:16,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2023-08-03 19:49:16,641 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 280 out of 758 [2023-08-03 19:49:16,642 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 91 transitions, 552 flow. Second operand has 11 states, 11 states have (on average 287.27272727272725) internal successors, (3160), 11 states have internal predecessors, (3160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:49:16,642 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:49:16,642 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 280 of 758 [2023-08-03 19:49:16,642 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:49:21,584 INFO L124 PetriNetUnfolderBase]: 18420/33786 cut-off events. [2023-08-03 19:49:21,584 INFO L125 PetriNetUnfolderBase]: For 117390/117390 co-relation queries the response was YES. [2023-08-03 19:49:21,666 INFO L83 FinitePrefix]: Finished finitePrefix Result has 128880 conditions, 33786 events. 18420/33786 cut-off events. For 117390/117390 co-relation queries the response was YES. Maximal size of possible extension queue 1150. Compared 295938 event pairs, 3780 based on Foata normal form. 3/33695 useless extension candidates. Maximal degree in co-relation 128820. Up to 11705 conditions per place. [2023-08-03 19:49:21,703 INFO L140 encePairwiseOnDemand]: 750/758 looper letters, 166 selfloop transitions, 25 changer transitions 25/222 dead transitions. [2023-08-03 19:49:21,703 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 222 transitions, 1718 flow [2023-08-03 19:49:21,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-03 19:49:21,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-03 19:49:21,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1842 transitions. [2023-08-03 19:49:21,706 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4050131926121372 [2023-08-03 19:49:21,706 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1842 transitions. [2023-08-03 19:49:21,706 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1842 transitions. [2023-08-03 19:49:21,707 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:49:21,707 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1842 transitions. [2023-08-03 19:49:21,709 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 307.0) internal successors, (1842), 6 states have internal predecessors, (1842), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:49:21,711 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 758.0) internal successors, (5306), 7 states have internal predecessors, (5306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:49:21,711 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 758.0) internal successors, (5306), 7 states have internal predecessors, (5306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:49:21,711 INFO L175 Difference]: Start difference. First operand has 103 places, 91 transitions, 552 flow. Second operand 6 states and 1842 transitions. [2023-08-03 19:49:21,711 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 222 transitions, 1718 flow [2023-08-03 19:49:22,657 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 222 transitions, 1660 flow, removed 12 selfloop flow, removed 5 redundant places. [2023-08-03 19:49:22,659 INFO L231 Difference]: Finished difference. Result has 106 places, 99 transitions, 687 flow [2023-08-03 19:49:22,660 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=758, PETRI_DIFFERENCE_MINUEND_FLOW=514, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=687, PETRI_PLACES=106, PETRI_TRANSITIONS=99} [2023-08-03 19:49:22,660 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 52 predicate places. [2023-08-03 19:49:22,660 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 99 transitions, 687 flow [2023-08-03 19:49:22,661 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 287.27272727272725) internal successors, (3160), 11 states have internal predecessors, (3160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:49:22,661 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:49:22,661 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:49:22,666 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 19:49:22,865 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 19:49:22,866 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 1 more)] === [2023-08-03 19:49:22,866 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:49:22,866 INFO L85 PathProgramCache]: Analyzing trace with hash -457781804, now seen corresponding path program 1 times [2023-08-03 19:49:22,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:49:22,866 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1928029618] [2023-08-03 19:49:22,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:49:22,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:49:22,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:49:23,695 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2023-08-03 19:49:23,695 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:49:23,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1928029618] [2023-08-03 19:49:23,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1928029618] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 19:49:23,695 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 19:49:23,695 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-03 19:49:23,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054036193] [2023-08-03 19:49:23,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 19:49:23,696 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 19:49:23,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:49:23,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 19:49:23,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-03 19:49:23,861 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 284 out of 758 [2023-08-03 19:49:23,862 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 99 transitions, 687 flow. Second operand has 5 states, 5 states have (on average 291.6) internal successors, (1458), 5 states have internal predecessors, (1458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:49:23,862 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:49:23,862 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 284 of 758 [2023-08-03 19:49:23,862 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:49:28,234 INFO L124 PetriNetUnfolderBase]: 18824/34972 cut-off events. [2023-08-03 19:49:28,235 INFO L125 PetriNetUnfolderBase]: For 151095/151095 co-relation queries the response was YES. [2023-08-03 19:49:28,379 INFO L83 FinitePrefix]: Finished finitePrefix Result has 140440 conditions, 34972 events. 18824/34972 cut-off events. For 151095/151095 co-relation queries the response was YES. Maximal size of possible extension queue 1217. Compared 314937 event pairs, 2913 based on Foata normal form. 2/34839 useless extension candidates. Maximal degree in co-relation 140378. Up to 15034 conditions per place. [2023-08-03 19:49:28,415 INFO L140 encePairwiseOnDemand]: 750/758 looper letters, 153 selfloop transitions, 21 changer transitions 31/211 dead transitions. [2023-08-03 19:49:28,415 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 211 transitions, 1703 flow [2023-08-03 19:49:28,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-03 19:49:28,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-03 19:49:28,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1863 transitions. [2023-08-03 19:49:28,418 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4096306068601583 [2023-08-03 19:49:28,418 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1863 transitions. [2023-08-03 19:49:28,418 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1863 transitions. [2023-08-03 19:49:28,419 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:49:28,419 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1863 transitions. [2023-08-03 19:49:28,421 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 310.5) internal successors, (1863), 6 states have internal predecessors, (1863), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:49:28,423 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 758.0) internal successors, (5306), 7 states have internal predecessors, (5306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:49:28,423 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 758.0) internal successors, (5306), 7 states have internal predecessors, (5306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:49:28,423 INFO L175 Difference]: Start difference. First operand has 106 places, 99 transitions, 687 flow. Second operand 6 states and 1863 transitions. [2023-08-03 19:49:28,423 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 211 transitions, 1703 flow [2023-08-03 19:49:29,715 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 211 transitions, 1670 flow, removed 6 selfloop flow, removed 2 redundant places. [2023-08-03 19:49:29,717 INFO L231 Difference]: Finished difference. Result has 110 places, 91 transitions, 650 flow [2023-08-03 19:49:29,717 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=758, PETRI_DIFFERENCE_MINUEND_FLOW=658, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=650, PETRI_PLACES=110, PETRI_TRANSITIONS=91} [2023-08-03 19:49:29,717 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 56 predicate places. [2023-08-03 19:49:29,717 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 91 transitions, 650 flow [2023-08-03 19:49:29,717 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 291.6) internal successors, (1458), 5 states have internal predecessors, (1458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:49:29,718 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:49:29,718 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:49:29,718 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-08-03 19:49:29,718 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 19:49:29,718 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:49:29,718 INFO L85 PathProgramCache]: Analyzing trace with hash 721910774, now seen corresponding path program 2 times [2023-08-03 19:49:29,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:49:29,718 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1856957013] [2023-08-03 19:49:29,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:49:29,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:49:29,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:49:30,231 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2023-08-03 19:49:30,231 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:49:30,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1856957013] [2023-08-03 19:49:30,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1856957013] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 19:49:30,232 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 19:49:30,232 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-03 19:49:30,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1387566978] [2023-08-03 19:49:30,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 19:49:30,233 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 19:49:30,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:49:30,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 19:49:30,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-03 19:49:30,430 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 284 out of 758 [2023-08-03 19:49:30,431 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 91 transitions, 650 flow. Second operand has 5 states, 5 states have (on average 291.6) internal successors, (1458), 5 states have internal predecessors, (1458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:49:30,431 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:49:30,431 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 284 of 758 [2023-08-03 19:49:30,431 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:49:32,903 INFO L124 PetriNetUnfolderBase]: 9322/17043 cut-off events. [2023-08-03 19:49:32,903 INFO L125 PetriNetUnfolderBase]: For 92463/92463 co-relation queries the response was YES. [2023-08-03 19:49:32,948 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71765 conditions, 17043 events. 9322/17043 cut-off events. For 92463/92463 co-relation queries the response was YES. Maximal size of possible extension queue 606. Compared 135176 event pairs, 1016 based on Foata normal form. 2/16942 useless extension candidates. Maximal degree in co-relation 71702. Up to 7854 conditions per place. [2023-08-03 19:49:32,960 INFO L140 encePairwiseOnDemand]: 750/758 looper letters, 0 selfloop transitions, 0 changer transitions 164/164 dead transitions. [2023-08-03 19:49:32,960 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 164 transitions, 1331 flow [2023-08-03 19:49:32,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-03 19:49:32,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-03 19:49:32,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1832 transitions. [2023-08-03 19:49:32,963 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40281442392260336 [2023-08-03 19:49:32,963 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1832 transitions. [2023-08-03 19:49:32,963 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1832 transitions. [2023-08-03 19:49:32,964 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:49:32,964 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1832 transitions. [2023-08-03 19:49:32,968 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 305.3333333333333) internal successors, (1832), 6 states have internal predecessors, (1832), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:49:32,970 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 758.0) internal successors, (5306), 7 states have internal predecessors, (5306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:49:32,971 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 758.0) internal successors, (5306), 7 states have internal predecessors, (5306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:49:32,971 INFO L175 Difference]: Start difference. First operand has 110 places, 91 transitions, 650 flow. Second operand 6 states and 1832 transitions. [2023-08-03 19:49:32,971 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 164 transitions, 1331 flow [2023-08-03 19:49:33,835 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 164 transitions, 1253 flow, removed 12 selfloop flow, removed 11 redundant places. [2023-08-03 19:49:33,836 INFO L231 Difference]: Finished difference. Result has 100 places, 0 transitions, 0 flow [2023-08-03 19:49:33,836 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=758, PETRI_DIFFERENCE_MINUEND_FLOW=564, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=100, PETRI_TRANSITIONS=0} [2023-08-03 19:49:33,837 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 46 predicate places. [2023-08-03 19:49:33,837 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 0 transitions, 0 flow [2023-08-03 19:49:33,837 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 291.6) internal successors, (1458), 5 states have internal predecessors, (1458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:49:33,837 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2023-08-03 19:49:33,837 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2023-08-03 19:49:33,837 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-08-03 19:49:33,837 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-08-03 19:49:33,837 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-08-03 19:49:33,838 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:49:33,839 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 2 thread instances [2023-08-03 19:49:33,839 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-03 19:49:33,841 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.08 07:49:33 BasicIcfg [2023-08-03 19:49:33,841 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-03 19:49:33,842 INFO L158 Benchmark]: Toolchain (without parser) took 115271.63ms. Allocated memory was 335.5MB in the beginning and 9.9GB in the end (delta: 9.6GB). Free memory was 288.5MB in the beginning and 7.8GB in the end (delta: -7.5GB). Peak memory consumption was 2.5GB. Max. memory is 16.0GB. [2023-08-03 19:49:33,842 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 335.5MB. Free memory is still 288.3MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-03 19:49:33,842 INFO L158 Benchmark]: CACSL2BoogieTranslator took 205.37ms. Allocated memory is still 335.5MB. Free memory was 288.5MB in the beginning and 276.7MB in the end (delta: 11.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. [2023-08-03 19:49:33,842 INFO L158 Benchmark]: Boogie Procedure Inliner took 37.62ms. Allocated memory is still 335.5MB. Free memory was 276.7MB in the beginning and 274.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-03 19:49:33,842 INFO L158 Benchmark]: Boogie Preprocessor took 24.92ms. Allocated memory is still 335.5MB. Free memory was 274.6MB in the beginning and 272.8MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-03 19:49:33,842 INFO L158 Benchmark]: RCFGBuilder took 580.48ms. Allocated memory is still 335.5MB. Free memory was 272.8MB in the beginning and 253.3MB in the end (delta: 19.6MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. [2023-08-03 19:49:33,843 INFO L158 Benchmark]: TraceAbstraction took 114418.55ms. Allocated memory was 335.5MB in the beginning and 9.9GB in the end (delta: 9.6GB). Free memory was 252.6MB in the beginning and 7.8GB in the end (delta: -7.5GB). Peak memory consumption was 2.4GB. Max. memory is 16.0GB. [2023-08-03 19:49:33,844 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 335.5MB. Free memory is still 288.3MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 205.37ms. Allocated memory is still 335.5MB. Free memory was 288.5MB in the beginning and 276.7MB in the end (delta: 11.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 37.62ms. Allocated memory is still 335.5MB. Free memory was 276.7MB in the beginning and 274.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 24.92ms. Allocated memory is still 335.5MB. Free memory was 274.6MB in the beginning and 272.8MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 580.48ms. Allocated memory is still 335.5MB. Free memory was 272.8MB in the beginning and 253.3MB in the end (delta: 19.6MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. * TraceAbstraction took 114418.55ms. Allocated memory was 335.5MB in the beginning and 9.9GB in the end (delta: 9.6GB). Free memory was 252.6MB in the beginning and 7.8GB in the end (delta: -7.5GB). Peak memory consumption was 2.4GB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 6.2s, 222 PlacesBefore, 39 PlacesAfterwards, 243 TransitionsBefore, 41 TransitionsAfterwards, 22644 CoEnabledTransitionPairs, 7 FixpointIterations, 45 TrivialSequentialCompositions, 132 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 59 ConcurrentYvCompositions, 19 ChoiceCompositions, 255 TotalNumberOfCompositions, 24633 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 23705, independent: 23675, independent conditional: 0, independent unconditional: 23675, dependent: 30, dependent conditional: 0, dependent unconditional: 30, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 13348, independent: 13330, independent conditional: 0, independent unconditional: 13330, dependent: 18, dependent conditional: 0, dependent unconditional: 18, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 23705, independent: 10345, independent conditional: 0, independent unconditional: 10345, dependent: 12, dependent conditional: 0, dependent unconditional: 12, unknown: 13348, unknown conditional: 0, unknown unconditional: 13348] , Statistics on independence cache: Total cache size (in pairs): 48, Positive cache size: 45, Positive conditional cache size: 0, Positive unconditional cache size: 45, Negative cache size: 3, Negative conditional cache size: 0, Negative unconditional cache size: 3, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 9.5s, 321 PlacesBefore, 54 PlacesAfterwards, 357 TransitionsBefore, 59 TransitionsAfterwards, 70380 CoEnabledTransitionPairs, 8 FixpointIterations, 45 TrivialSequentialCompositions, 215 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 110 ConcurrentYvCompositions, 31 ChoiceCompositions, 401 TotalNumberOfCompositions, 88938 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 84220, independent: 84145, independent conditional: 0, independent unconditional: 84145, dependent: 75, dependent conditional: 0, dependent unconditional: 75, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 42117, independent: 42083, independent conditional: 0, independent unconditional: 42083, dependent: 34, dependent conditional: 0, dependent unconditional: 34, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 84220, independent: 42062, independent conditional: 0, independent unconditional: 42062, dependent: 41, dependent conditional: 0, dependent unconditional: 41, unknown: 42117, unknown conditional: 0, unknown unconditional: 42117] , Statistics on independence cache: Total cache size (in pairs): 166, Positive cache size: 163, Positive conditional cache size: 0, Positive unconditional cache size: 163, Negative cache size: 3, Negative conditional cache size: 0, Negative unconditional cache size: 3, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 80]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 309 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 6.7s, OverallIterations: 1, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 6.5s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=124occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 6 NumberOfCodeBlocks, 6 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - StatisticsResult: Ultimate Automizer benchmark data with 2 thread instances CFG has 10 procedures, 402 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 107.5s, OverallIterations: 21, TraceHistogramMax: 3, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 73.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 10.7s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 3812 SdHoareTripleChecker+Valid, 5.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 3246 mSDsluCounter, 1350 SdHoareTripleChecker+Invalid, 4.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1089 mSDsCounter, 244 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 8291 IncrementalHoareTripleChecker+Invalid, 8535 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 244 mSolverCounterUnsat, 261 mSDtfsCounter, 8291 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1244 GetRequests, 1114 SyntacticMatches, 16 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 181 ImplicationChecksByTransitivity, 3.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=687occurred in iteration=19, InterpolantAutomatonStates: 101, 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: 0.3s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 17.4s InterpolantComputationTime, 1445 NumberOfCodeBlocks, 1445 NumberOfCodeBlocksAsserted, 39 NumberOfCheckSat, 1876 ConstructedInterpolants, 0 QuantifiedInterpolants, 21094 SizeOfPredicates, 209 NumberOfNonLiveVariables, 3263 ConjunctsInSsa, 73 ConjunctsInUnsatCore, 49 InterpolantComputations, 11 PerfectInterpolantSequences, 887/971 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-03 19:49:33,860 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...