/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 INSUFFICIENT_FIRST -tc /storage/repos/CAV22/benchmarks/AutomizerCInline.xml -i /storage/repos/CAV22/benchmarks/increased_bounds/weaver_bench-exp2x3.wvr_bound2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-19404b3-m [2023-08-04 01:47:54,397 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-04 01:47:54,431 INFO L114 SettingsManager]: Loading settings from /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-04 01:47:54,434 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-04 01:47:54,434 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-08-04 01:47:54,435 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Translation Mode: [2023-08-04 01:47:54,435 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-04 01:47:54,460 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-04 01:47:54,461 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-04 01:47:54,461 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-04 01:47:54,461 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-04 01:47:54,462 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-04 01:47:54,462 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-04 01:47:54,462 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-04 01:47:54,463 INFO L153 SettingsManager]: * Use SBE=true [2023-08-04 01:47:54,463 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-04 01:47:54,463 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-04 01:47:54,463 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-04 01:47:54,463 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-04 01:47:54,464 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-04 01:47:54,464 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-04 01:47:54,464 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-04 01:47:54,465 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-04 01:47:54,465 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-04 01:47:54,465 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-04 01:47:54,465 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-04 01:47:54,465 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-04 01:47:54,466 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-04 01:47:54,466 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-04 01:47:54,466 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-04 01:47:54,466 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-04 01:47:54,467 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-04 01:47:54,467 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-04 01:47:54,467 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-04 01:47:54,467 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-04 01:47:54,467 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-04 01:47:54,468 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-04 01:47:54,468 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-04 01:47:54,468 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-04 01:47:54,468 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-04 01:47:54,468 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-04 01:47:54,470 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> INSUFFICIENT_FIRST [2023-08-04 01:47:54,653 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-04 01:47:54,667 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-04 01:47:54,669 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-04 01:47:54,669 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-04 01:47:54,671 INFO L274 PluginConnector]: CDTParser initialized [2023-08-04 01:47:54,672 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/CAV22/benchmarks/increased_bounds/weaver_bench-exp2x3.wvr_bound2.c [2023-08-04 01:47:55,553 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-04 01:47:55,721 INFO L384 CDTParser]: Found 1 translation units. [2023-08-04 01:47:55,721 INFO L180 CDTParser]: Scanning /storage/repos/CAV22/benchmarks/increased_bounds/weaver_bench-exp2x3.wvr_bound2.c [2023-08-04 01:47:55,727 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1658aaabd/50a0ddc6ad47459498483af2f119f767/FLAG51da3599d [2023-08-04 01:47:55,737 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1658aaabd/50a0ddc6ad47459498483af2f119f767 [2023-08-04 01:47:55,739 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-04 01:47:55,740 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-04 01:47:55,740 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-04 01:47:55,740 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-04 01:47:55,743 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-04 01:47:55,743 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.08 01:47:55" (1/1) ... [2023-08-04 01:47:55,744 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@26673399 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 01:47:55, skipping insertion in model container [2023-08-04 01:47:55,744 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.08 01:47:55" (1/1) ... [2023-08-04 01:47:55,759 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-04 01:47:55,870 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/CAV22/benchmarks/increased_bounds/weaver_bench-exp2x3.wvr_bound2.c[2561,2574] [2023-08-04 01:47:55,871 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-04 01:47:55,877 INFO L201 MainTranslator]: Completed pre-run [2023-08-04 01:47:55,897 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/CAV22/benchmarks/increased_bounds/weaver_bench-exp2x3.wvr_bound2.c[2561,2574] [2023-08-04 01:47:55,897 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-04 01:47:55,907 INFO L206 MainTranslator]: Completed translation [2023-08-04 01:47:55,907 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 01:47:55 WrapperNode [2023-08-04 01:47:55,907 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-04 01:47:55,908 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-04 01:47:55,908 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-04 01:47:55,908 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-04 01:47:55,913 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 01:47:55" (1/1) ... [2023-08-04 01:47:55,918 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 01:47:55" (1/1) ... [2023-08-04 01:47:55,933 INFO L138 Inliner]: procedures = 20, calls = 32, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 160 [2023-08-04 01:47:55,934 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-04 01:47:55,934 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-04 01:47:55,934 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-04 01:47:55,935 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-04 01:47:55,941 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 01:47:55" (1/1) ... [2023-08-04 01:47:55,941 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 01:47:55" (1/1) ... [2023-08-04 01:47:55,943 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 01:47:55" (1/1) ... [2023-08-04 01:47:55,943 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 01:47:55" (1/1) ... [2023-08-04 01:47:55,948 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 01:47:55" (1/1) ... [2023-08-04 01:47:55,951 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 01:47:55" (1/1) ... [2023-08-04 01:47:55,952 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 01:47:55" (1/1) ... [2023-08-04 01:47:55,953 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 01:47:55" (1/1) ... [2023-08-04 01:47:55,955 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-04 01:47:55,956 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-04 01:47:55,956 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-04 01:47:55,956 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-04 01:47:55,956 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 01:47:55" (1/1) ... [2023-08-04 01:47:55,962 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-04 01:47:55,971 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 01:47:55,982 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) [2023-08-04 01:47:56,010 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 [2023-08-04 01:47:56,029 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-04 01:47:56,029 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-04 01:47:56,029 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-04 01:47:56,029 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-04 01:47:56,029 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-04 01:47:56,029 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-08-04 01:47:56,029 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-08-04 01:47:56,029 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2023-08-04 01:47:56,030 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2023-08-04 01:47:56,030 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-04 01:47:56,030 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-04 01:47:56,031 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-04 01:47:56,031 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-04 01:47:56,031 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-04 01:47:56,031 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-04 01:47:56,031 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-04 01:47:56,032 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-04 01:47:56,119 INFO L236 CfgBuilder]: Building ICFG [2023-08-04 01:47:56,121 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-04 01:47:56,361 INFO L277 CfgBuilder]: Performing block encoding [2023-08-04 01:47:56,367 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-04 01:47:56,367 INFO L302 CfgBuilder]: Removed 12 assume(true) statements. [2023-08-04 01:47:56,368 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.08 01:47:56 BoogieIcfgContainer [2023-08-04 01:47:56,368 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-04 01:47:56,370 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-04 01:47:56,370 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-04 01:47:56,372 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-04 01:47:56,372 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.08 01:47:55" (1/3) ... [2023-08-04 01:47:56,373 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c97e46e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.08 01:47:56, skipping insertion in model container [2023-08-04 01:47:56,373 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 01:47:55" (2/3) ... [2023-08-04 01:47:56,373 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c97e46e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.08 01:47:56, skipping insertion in model container [2023-08-04 01:47:56,373 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.08 01:47:56" (3/3) ... [2023-08-04 01:47:56,374 INFO L112 eAbstractionObserver]: Analyzing ICFG weaver_bench-exp2x3.wvr_bound2.c [2023-08-04 01:47:56,379 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-04 01:47:56,386 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-04 01:47:56,386 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-04 01:47:56,386 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-04 01:47:56,448 INFO L144 ThreadInstanceAdder]: Constructed 16 joinOtherThreadTransitions. [2023-08-04 01:47:56,488 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 166 places, 191 transitions, 450 flow [2023-08-04 01:47:56,683 INFO L124 PetriNetUnfolderBase]: 269/1437 cut-off events. [2023-08-04 01:47:56,683 INFO L125 PetriNetUnfolderBase]: For 128/128 co-relation queries the response was YES. [2023-08-04 01:47:56,693 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1615 conditions, 1437 events. 269/1437 cut-off events. For 128/128 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 9424 event pairs, 0 based on Foata normal form. 0/1186 useless extension candidates. Maximal degree in co-relation 798. Up to 33 conditions per place. [2023-08-04 01:47:56,694 INFO L82 GeneralOperation]: Start removeDead. Operand has 166 places, 191 transitions, 450 flow [2023-08-04 01:47:56,701 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 166 places, 191 transitions, 450 flow [2023-08-04 01:47:56,703 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-04 01:47:56,709 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 166 places, 191 transitions, 450 flow [2023-08-04 01:47:56,711 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 166 places, 191 transitions, 450 flow [2023-08-04 01:47:56,711 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 166 places, 191 transitions, 450 flow [2023-08-04 01:47:56,801 INFO L124 PetriNetUnfolderBase]: 269/1437 cut-off events. [2023-08-04 01:47:56,802 INFO L125 PetriNetUnfolderBase]: For 128/128 co-relation queries the response was YES. [2023-08-04 01:47:56,807 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1615 conditions, 1437 events. 269/1437 cut-off events. For 128/128 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 9424 event pairs, 0 based on Foata normal form. 0/1186 useless extension candidates. Maximal degree in co-relation 798. Up to 33 conditions per place. [2023-08-04 01:47:56,820 INFO L119 LiptonReduction]: Number of co-enabled transitions 5280 [2023-08-04 01:47:59,754 INFO L134 LiptonReduction]: Checked pairs total: 12402 [2023-08-04 01:47:59,754 INFO L136 LiptonReduction]: Total number of compositions: 147 [2023-08-04 01:47:59,764 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-04 01:47:59,767 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;@59cc21aa, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-04 01:47:59,768 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-08-04 01:47:59,771 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-04 01:47:59,771 INFO L124 PetriNetUnfolderBase]: 4/31 cut-off events. [2023-08-04 01:47:59,771 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 01:47:59,771 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 01:47:59,771 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-04 01:47:59,772 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-04 01:47:59,774 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 01:47:59,775 INFO L85 PathProgramCache]: Analyzing trace with hash -1160639439, now seen corresponding path program 1 times [2023-08-04 01:47:59,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 01:47:59,780 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2032318512] [2023-08-04 01:47:59,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 01:47:59,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 01:47:59,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-04 01:47:59,863 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-04 01:47:59,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-04 01:47:59,890 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-04 01:47:59,891 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-04 01:47:59,892 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 4 remaining) [2023-08-04 01:47:59,893 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2023-08-04 01:47:59,894 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-08-04 01:47:59,894 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-08-04 01:47:59,894 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-04 01:47:59,894 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-04 01:47:59,896 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE,UNKNOWN,UNKNOWN,UNKNOWN (1/2) [2023-08-04 01:47:59,896 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-04 01:47:59,896 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-04 01:47:59,922 INFO L144 ThreadInstanceAdder]: Constructed 32 joinOtherThreadTransitions. [2023-08-04 01:47:59,941 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 194 places, 235 transitions, 614 flow [2023-08-04 01:48:01,763 INFO L124 PetriNetUnfolderBase]: 5482/20040 cut-off events. [2023-08-04 01:48:01,763 INFO L125 PetriNetUnfolderBase]: For 4176/4176 co-relation queries the response was YES. [2023-08-04 01:48:01,855 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24425 conditions, 20040 events. 5482/20040 cut-off events. For 4176/4176 co-relation queries the response was YES. Maximal size of possible extension queue 370. Compared 209353 event pairs, 162 based on Foata normal form. 0/17079 useless extension candidates. Maximal degree in co-relation 12057. Up to 1024 conditions per place. [2023-08-04 01:48:01,856 INFO L82 GeneralOperation]: Start removeDead. Operand has 194 places, 235 transitions, 614 flow [2023-08-04 01:48:01,926 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 194 places, 235 transitions, 614 flow [2023-08-04 01:48:01,926 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-04 01:48:01,926 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 194 places, 235 transitions, 614 flow [2023-08-04 01:48:01,927 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 194 places, 235 transitions, 614 flow [2023-08-04 01:48:01,927 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 194 places, 235 transitions, 614 flow [2023-08-04 01:48:03,431 INFO L124 PetriNetUnfolderBase]: 5482/20040 cut-off events. [2023-08-04 01:48:03,432 INFO L125 PetriNetUnfolderBase]: For 4176/4176 co-relation queries the response was YES. [2023-08-04 01:48:03,512 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24425 conditions, 20040 events. 5482/20040 cut-off events. For 4176/4176 co-relation queries the response was YES. Maximal size of possible extension queue 370. Compared 209353 event pairs, 162 based on Foata normal form. 0/17079 useless extension candidates. Maximal degree in co-relation 12057. Up to 1024 conditions per place. [2023-08-04 01:48:03,665 INFO L119 LiptonReduction]: Number of co-enabled transitions 13440 [2023-08-04 01:48:06,479 INFO L134 LiptonReduction]: Checked pairs total: 65126 [2023-08-04 01:48:06,480 INFO L136 LiptonReduction]: Total number of compositions: 155 [2023-08-04 01:48:06,481 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-04 01:48:06,482 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;@59cc21aa, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-04 01:48:06,482 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-08-04 01:48:06,488 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-04 01:48:06,489 INFO L124 PetriNetUnfolderBase]: 20/148 cut-off events. [2023-08-04 01:48:06,489 INFO L125 PetriNetUnfolderBase]: For 15/15 co-relation queries the response was YES. [2023-08-04 01:48:06,489 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 01:48:06,489 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-08-04 01:48:06,489 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-04 01:48:06,489 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 01:48:06,490 INFO L85 PathProgramCache]: Analyzing trace with hash 28579356, now seen corresponding path program 1 times [2023-08-04 01:48:06,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 01:48:06,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [87857536] [2023-08-04 01:48:06,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 01:48:06,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 01:48:06,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 01:48:06,644 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 01:48:06,644 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 01:48:06,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [87857536] [2023-08-04 01:48:06,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [87857536] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 01:48:06,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [685415264] [2023-08-04 01:48:06,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 01:48:06,645 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 01:48:06,645 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 01:48:06,648 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) [2023-08-04 01:48:06,649 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-04 01:48:06,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 01:48:06,711 INFO L262 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-04 01:48:06,712 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 01:48:06,739 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 01:48:06,739 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-04 01:48:06,740 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [685415264] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 01:48:06,740 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-04 01:48:06,740 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 5 [2023-08-04 01:48:06,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632559711] [2023-08-04 01:48:06,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 01:48:06,745 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-04 01:48:06,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 01:48:06,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-04 01:48:06,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-04 01:48:06,773 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 171 out of 390 [2023-08-04 01:48:06,776 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 102 transitions, 348 flow. Second operand has 5 states, 5 states have (on average 172.6) internal successors, (863), 5 states have internal predecessors, (863), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:48:06,776 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 01:48:06,776 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 171 of 390 [2023-08-04 01:48:06,777 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 01:48:34,334 INFO L124 PetriNetUnfolderBase]: 311218/431593 cut-off events. [2023-08-04 01:48:34,334 INFO L125 PetriNetUnfolderBase]: For 94812/94812 co-relation queries the response was YES. [2023-08-04 01:48:36,722 INFO L83 FinitePrefix]: Finished finitePrefix Result has 908820 conditions, 431593 events. 311218/431593 cut-off events. For 94812/94812 co-relation queries the response was YES. Maximal size of possible extension queue 6297. Compared 3125930 event pairs, 184474 based on Foata normal form. 0/402308 useless extension candidates. Maximal degree in co-relation 372997. Up to 402421 conditions per place. [2023-08-04 01:48:38,488 INFO L140 encePairwiseOnDemand]: 385/390 looper letters, 75 selfloop transitions, 5 changer transitions 0/107 dead transitions. [2023-08-04 01:48:38,489 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 107 transitions, 514 flow [2023-08-04 01:48:38,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-04 01:48:38,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-04 01:48:38,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 937 transitions. [2023-08-04 01:48:38,501 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4805128205128205 [2023-08-04 01:48:38,501 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 937 transitions. [2023-08-04 01:48:38,501 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 937 transitions. [2023-08-04 01:48:38,503 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 01:48:38,505 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 937 transitions. [2023-08-04 01:48:38,510 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 187.4) internal successors, (937), 5 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) [2023-08-04 01:48:38,515 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 390.0) internal successors, (2340), 6 states have internal predecessors, (2340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:48:38,516 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 390.0) internal successors, (2340), 6 states have internal predecessors, (2340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:48:38,521 INFO L175 Difference]: Start difference. First operand has 79 places, 102 transitions, 348 flow. Second operand 5 states and 937 transitions. [2023-08-04 01:48:38,521 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 107 transitions, 514 flow [2023-08-04 01:48:38,577 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 107 transitions, 504 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-04 01:48:38,580 INFO L231 Difference]: Finished difference. Result has 80 places, 103 transitions, 353 flow [2023-08-04 01:48:38,581 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=390, PETRI_DIFFERENCE_MINUEND_FLOW=330, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=353, PETRI_PLACES=80, PETRI_TRANSITIONS=103} [2023-08-04 01:48:38,584 INFO L281 CegarLoopForPetriNet]: 79 programPoint places, 1 predicate places. [2023-08-04 01:48:38,584 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 103 transitions, 353 flow [2023-08-04 01:48:38,585 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 172.6) internal successors, (863), 5 states have internal predecessors, (863), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:48:38,585 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 01:48:38,585 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1] [2023-08-04 01:48:38,591 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-04 01:48:38,791 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 01:48:38,792 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-04 01:48:38,792 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 01:48:38,792 INFO L85 PathProgramCache]: Analyzing trace with hash 1147892009, now seen corresponding path program 1 times [2023-08-04 01:48:38,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 01:48:38,792 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [162555362] [2023-08-04 01:48:38,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 01:48:38,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 01:48:38,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 01:48:38,862 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-04 01:48:38,863 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 01:48:38,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [162555362] [2023-08-04 01:48:38,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [162555362] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 01:48:38,863 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 01:48:38,863 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-04 01:48:38,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [368257247] [2023-08-04 01:48:38,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 01:48:38,864 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 01:48:38,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 01:48:38,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 01:48:38,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-04 01:48:38,880 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 172 out of 390 [2023-08-04 01:48:38,881 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 103 transitions, 353 flow. Second operand has 3 states, 3 states have (on average 174.0) internal successors, (522), 3 states have internal predecessors, (522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:48:38,881 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 01:48:38,881 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 172 of 390 [2023-08-04 01:48:38,881 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 01:49:03,958 INFO L124 PetriNetUnfolderBase]: 308542/425703 cut-off events. [2023-08-04 01:49:03,958 INFO L125 PetriNetUnfolderBase]: For 89252/89252 co-relation queries the response was YES. [2023-08-04 01:49:06,346 INFO L83 FinitePrefix]: Finished finitePrefix Result has 889846 conditions, 425703 events. 308542/425703 cut-off events. For 89252/89252 co-relation queries the response was YES. Maximal size of possible extension queue 6479. Compared 3054874 event pairs, 212877 based on Foata normal form. 1/396382 useless extension candidates. Maximal degree in co-relation 275158. Up to 398767 conditions per place. [2023-08-04 01:49:08,059 INFO L140 encePairwiseOnDemand]: 387/390 looper letters, 75 selfloop transitions, 2 changer transitions 0/104 dead transitions. [2023-08-04 01:49:08,059 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 104 transitions, 508 flow [2023-08-04 01:49:08,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 01:49:08,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 01:49:08,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 593 transitions. [2023-08-04 01:49:08,078 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5068376068376068 [2023-08-04 01:49:08,078 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 593 transitions. [2023-08-04 01:49:08,078 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 593 transitions. [2023-08-04 01:49:08,078 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 01:49:08,078 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 593 transitions. [2023-08-04 01:49:08,079 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 197.66666666666666) internal successors, (593), 3 states have internal predecessors, (593), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:49:08,081 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 390.0) internal successors, (1560), 4 states have internal predecessors, (1560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:49:08,082 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 390.0) internal successors, (1560), 4 states have internal predecessors, (1560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:49:08,082 INFO L175 Difference]: Start difference. First operand has 80 places, 103 transitions, 353 flow. Second operand 3 states and 593 transitions. [2023-08-04 01:49:08,082 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 104 transitions, 508 flow [2023-08-04 01:49:08,169 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 104 transitions, 507 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-04 01:49:08,172 INFO L231 Difference]: Finished difference. Result has 81 places, 102 transitions, 351 flow [2023-08-04 01:49:08,172 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=390, PETRI_DIFFERENCE_MINUEND_FLOW=347, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=351, PETRI_PLACES=81, PETRI_TRANSITIONS=102} [2023-08-04 01:49:08,173 INFO L281 CegarLoopForPetriNet]: 79 programPoint places, 2 predicate places. [2023-08-04 01:49:08,173 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 102 transitions, 351 flow [2023-08-04 01:49:08,173 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 174.0) internal successors, (522), 3 states have internal predecessors, (522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:49:08,188 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 01:49:08,189 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 01:49:08,190 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-04 01:49:08,190 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-04 01:49:08,191 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 01:49:08,191 INFO L85 PathProgramCache]: Analyzing trace with hash -196788038, now seen corresponding path program 1 times [2023-08-04 01:49:08,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 01:49:08,194 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1471544515] [2023-08-04 01:49:08,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 01:49:08,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 01:49:08,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 01:49:08,278 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-04 01:49:08,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 01:49:08,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1471544515] [2023-08-04 01:49:08,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1471544515] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 01:49:08,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [863101059] [2023-08-04 01:49:08,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 01:49:08,279 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 01:49:08,279 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 01:49:08,281 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) [2023-08-04 01:49:08,343 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-04 01:49:08,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 01:49:08,422 INFO L262 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-04 01:49:08,423 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 01:49:08,437 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-04 01:49:08,437 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-04 01:49:08,452 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-04 01:49:08,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [863101059] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-04 01:49:08,453 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-04 01:49:08,453 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 4 [2023-08-04 01:49:08,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736904146] [2023-08-04 01:49:08,453 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-04 01:49:08,454 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-04 01:49:08,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 01:49:08,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-04 01:49:08,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-04 01:49:08,465 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 171 out of 390 [2023-08-04 01:49:08,466 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 102 transitions, 351 flow. Second operand has 5 states, 5 states have (on average 173.6) internal successors, (868), 5 states have internal predecessors, (868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:49:08,466 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 01:49:08,466 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 171 of 390 [2023-08-04 01:49:08,467 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 01:49:35,768 INFO L124 PetriNetUnfolderBase]: 302050/414999 cut-off events. [2023-08-04 01:49:35,769 INFO L125 PetriNetUnfolderBase]: For 88256/88256 co-relation queries the response was YES. [2023-08-04 01:49:38,716 INFO L83 FinitePrefix]: Finished finitePrefix Result has 869301 conditions, 414999 events. 302050/414999 cut-off events. For 88256/88256 co-relation queries the response was YES. Maximal size of possible extension queue 6222. Compared 2939474 event pairs, 179809 based on Foata normal form. 2/386231 useless extension candidates. Maximal degree in co-relation 542836. Up to 390281 conditions per place. [2023-08-04 01:49:40,701 INFO L140 encePairwiseOnDemand]: 387/390 looper letters, 75 selfloop transitions, 3 changer transitions 0/105 dead transitions. [2023-08-04 01:49:40,702 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 105 transitions, 512 flow [2023-08-04 01:49:40,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-04 01:49:40,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-04 01:49:40,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 763 transitions. [2023-08-04 01:49:40,704 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4891025641025641 [2023-08-04 01:49:40,704 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 763 transitions. [2023-08-04 01:49:40,704 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 763 transitions. [2023-08-04 01:49:40,705 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 01:49:40,705 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 763 transitions. [2023-08-04 01:49:40,706 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 190.75) internal successors, (763), 4 states have internal predecessors, (763), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:49:40,717 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 390.0) internal successors, (1950), 5 states have internal predecessors, (1950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:49:40,718 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 390.0) internal successors, (1950), 5 states have internal predecessors, (1950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:49:40,718 INFO L175 Difference]: Start difference. First operand has 81 places, 102 transitions, 351 flow. Second operand 4 states and 763 transitions. [2023-08-04 01:49:40,718 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 105 transitions, 512 flow [2023-08-04 01:49:40,755 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 105 transitions, 508 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-04 01:49:40,757 INFO L231 Difference]: Finished difference. Result has 82 places, 101 transitions, 348 flow [2023-08-04 01:49:40,757 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=390, PETRI_DIFFERENCE_MINUEND_FLOW=342, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=348, PETRI_PLACES=82, PETRI_TRANSITIONS=101} [2023-08-04 01:49:40,757 INFO L281 CegarLoopForPetriNet]: 79 programPoint places, 3 predicate places. [2023-08-04 01:49:40,758 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 101 transitions, 348 flow [2023-08-04 01:49:40,758 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 173.6) internal successors, (868), 5 states have internal predecessors, (868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:49:40,758 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 01:49:40,758 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 01:49:40,779 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-04 01:49:40,962 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 [2023-08-04 01:49:40,963 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-04 01:49:40,963 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 01:49:40,963 INFO L85 PathProgramCache]: Analyzing trace with hash 1584965994, now seen corresponding path program 1 times [2023-08-04 01:49:40,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 01:49:40,963 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1082469957] [2023-08-04 01:49:40,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 01:49:40,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 01:49:40,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 01:49:41,012 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-04 01:49:41,013 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 01:49:41,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1082469957] [2023-08-04 01:49:41,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1082469957] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 01:49:41,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [107127721] [2023-08-04 01:49:41,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 01:49:41,013 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 01:49:41,013 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 01:49:41,015 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) [2023-08-04 01:49:41,017 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-04 01:49:41,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 01:49:41,077 INFO L262 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-04 01:49:41,078 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 01:49:41,098 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-04 01:49:41,098 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-04 01:49:41,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [107127721] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 01:49:41,099 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-04 01:49:41,099 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 6 [2023-08-04 01:49:41,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434322678] [2023-08-04 01:49:41,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 01:49:41,099 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-04 01:49:41,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 01:49:41,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-04 01:49:41,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-04 01:49:41,110 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 171 out of 390 [2023-08-04 01:49:41,110 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 101 transitions, 348 flow. Second operand has 5 states, 5 states have (on average 173.6) internal successors, (868), 5 states have internal predecessors, (868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:49:41,111 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 01:49:41,111 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 171 of 390 [2023-08-04 01:49:41,111 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 01:50:12,231 INFO L124 PetriNetUnfolderBase]: 302050/415219 cut-off events. [2023-08-04 01:50:12,232 INFO L125 PetriNetUnfolderBase]: For 86668/86668 co-relation queries the response was YES. [2023-08-04 01:50:14,877 INFO L83 FinitePrefix]: Finished finitePrefix Result has 869461 conditions, 415219 events. 302050/415219 cut-off events. For 86668/86668 co-relation queries the response was YES. Maximal size of possible extension queue 6219. Compared 2950474 event pairs, 120731 based on Foata normal form. 0/386523 useless extension candidates. Maximal degree in co-relation 542960. Up to 390112 conditions per place. [2023-08-04 01:50:17,078 INFO L140 encePairwiseOnDemand]: 386/390 looper letters, 82 selfloop transitions, 5 changer transitions 0/113 dead transitions. [2023-08-04 01:50:17,078 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 113 transitions, 542 flow [2023-08-04 01:50:17,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-04 01:50:17,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-04 01:50:17,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 942 transitions. [2023-08-04 01:50:17,094 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48307692307692307 [2023-08-04 01:50:17,094 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 942 transitions. [2023-08-04 01:50:17,094 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 942 transitions. [2023-08-04 01:50:17,094 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 01:50:17,094 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 942 transitions. [2023-08-04 01:50:17,105 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 188.4) internal successors, (942), 5 states have internal predecessors, (942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:50:17,108 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 390.0) internal successors, (2340), 6 states have internal predecessors, (2340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:50:17,109 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 390.0) internal successors, (2340), 6 states have internal predecessors, (2340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:50:17,109 INFO L175 Difference]: Start difference. First operand has 82 places, 101 transitions, 348 flow. Second operand 5 states and 942 transitions. [2023-08-04 01:50:17,109 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 113 transitions, 542 flow [2023-08-04 01:50:17,171 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 113 transitions, 526 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-08-04 01:50:17,173 INFO L231 Difference]: Finished difference. Result has 81 places, 103 transitions, 349 flow [2023-08-04 01:50:17,173 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=390, PETRI_DIFFERENCE_MINUEND_FLOW=326, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=349, PETRI_PLACES=81, PETRI_TRANSITIONS=103} [2023-08-04 01:50:17,174 INFO L281 CegarLoopForPetriNet]: 79 programPoint places, 2 predicate places. [2023-08-04 01:50:17,174 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 103 transitions, 349 flow [2023-08-04 01:50:17,175 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 173.6) internal successors, (868), 5 states have internal predecessors, (868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:50:17,175 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 01:50:17,175 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 01:50:17,182 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-04 01:50:17,379 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 [2023-08-04 01:50:17,380 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-04 01:50:17,380 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 01:50:17,380 INFO L85 PathProgramCache]: Analyzing trace with hash -974329723, now seen corresponding path program 1 times [2023-08-04 01:50:17,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 01:50:17,381 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [467779991] [2023-08-04 01:50:17,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 01:50:17,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 01:50:17,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 01:50:17,449 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-08-04 01:50:17,449 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 01:50:17,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [467779991] [2023-08-04 01:50:17,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [467779991] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 01:50:17,451 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 01:50:17,451 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-04 01:50:17,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467865553] [2023-08-04 01:50:17,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 01:50:17,454 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 01:50:17,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 01:50:17,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 01:50:17,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-04 01:50:17,463 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 172 out of 390 [2023-08-04 01:50:17,464 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 103 transitions, 349 flow. Second operand has 3 states, 3 states have (on average 175.66666666666666) internal successors, (527), 3 states have internal predecessors, (527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:50:17,464 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 01:50:17,464 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 172 of 390 [2023-08-04 01:50:17,464 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 01:50:47,359 INFO L124 PetriNetUnfolderBase]: 300342/411003 cut-off events. [2023-08-04 01:50:47,360 INFO L125 PetriNetUnfolderBase]: For 81546/81546 co-relation queries the response was YES. [2023-08-04 01:50:49,809 INFO L83 FinitePrefix]: Finished finitePrefix Result has 853902 conditions, 411003 events. 300342/411003 cut-off events. For 81546/81546 co-relation queries the response was YES. Maximal size of possible extension queue 6671. Compared 2890201 event pairs, 209413 based on Foata normal form. 4/382131 useless extension candidates. Maximal degree in co-relation 331616. Up to 387957 conditions per place. [2023-08-04 01:50:51,577 INFO L140 encePairwiseOnDemand]: 387/390 looper letters, 78 selfloop transitions, 2 changer transitions 0/106 dead transitions. [2023-08-04 01:50:51,577 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 106 transitions, 514 flow [2023-08-04 01:50:51,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 01:50:51,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 01:50:51,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 595 transitions. [2023-08-04 01:50:51,579 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5085470085470085 [2023-08-04 01:50:51,579 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 595 transitions. [2023-08-04 01:50:51,579 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 595 transitions. [2023-08-04 01:50:51,592 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 01:50:51,592 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 595 transitions. [2023-08-04 01:50:51,593 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 198.33333333333334) internal successors, (595), 3 states have internal predecessors, (595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:50:51,595 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 390.0) internal successors, (1560), 4 states have internal predecessors, (1560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:50:51,595 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 390.0) internal successors, (1560), 4 states have internal predecessors, (1560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:50:51,595 INFO L175 Difference]: Start difference. First operand has 81 places, 103 transitions, 349 flow. Second operand 3 states and 595 transitions. [2023-08-04 01:50:51,596 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 106 transitions, 514 flow [2023-08-04 01:50:51,708 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 106 transitions, 513 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-04 01:50:51,709 INFO L231 Difference]: Finished difference. Result has 82 places, 102 transitions, 347 flow [2023-08-04 01:50:51,709 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=390, PETRI_DIFFERENCE_MINUEND_FLOW=343, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=347, PETRI_PLACES=82, PETRI_TRANSITIONS=102} [2023-08-04 01:50:51,710 INFO L281 CegarLoopForPetriNet]: 79 programPoint places, 3 predicate places. [2023-08-04 01:50:51,710 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 102 transitions, 347 flow [2023-08-04 01:50:51,710 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 175.66666666666666) internal successors, (527), 3 states have internal predecessors, (527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:50:51,710 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 01:50:51,710 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 01:50:51,711 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-04 01:50:51,711 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-04 01:50:51,711 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 01:50:51,711 INFO L85 PathProgramCache]: Analyzing trace with hash -1746678203, now seen corresponding path program 1 times [2023-08-04 01:50:51,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 01:50:51,711 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2087316464] [2023-08-04 01:50:51,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 01:50:51,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 01:50:51,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 01:50:51,749 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-08-04 01:50:51,750 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 01:50:51,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2087316464] [2023-08-04 01:50:51,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2087316464] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 01:50:51,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1688219856] [2023-08-04 01:50:51,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 01:50:51,750 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 01:50:51,750 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 01:50:51,751 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) [2023-08-04 01:50:51,753 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-04 01:50:51,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 01:50:51,817 INFO L262 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-04 01:50:51,818 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 01:50:51,834 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-08-04 01:50:51,835 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-04 01:50:51,854 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-08-04 01:50:51,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1688219856] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-04 01:50:51,854 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-04 01:50:51,855 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 5 [2023-08-04 01:50:51,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [850384307] [2023-08-04 01:50:51,855 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-04 01:50:51,856 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-04 01:50:51,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 01:50:51,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-04 01:50:51,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-04 01:50:51,867 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 171 out of 390 [2023-08-04 01:50:51,868 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 102 transitions, 347 flow. Second operand has 5 states, 5 states have (on average 174.6) internal successors, (873), 5 states have internal predecessors, (873), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:50:51,869 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 01:50:51,869 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 171 of 390 [2023-08-04 01:50:51,869 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 01:51:20,989 INFO L124 PetriNetUnfolderBase]: 296286/404595 cut-off events. [2023-08-04 01:51:20,990 INFO L125 PetriNetUnfolderBase]: For 80982/80982 co-relation queries the response was YES. [2023-08-04 01:51:23,544 INFO L83 FinitePrefix]: Finished finitePrefix Result has 841570 conditions, 404595 events. 296286/404595 cut-off events. For 80982/80982 co-relation queries the response was YES. Maximal size of possible extension queue 6507. Compared 2824154 event pairs, 179121 based on Foata normal form. 8/376063 useless extension candidates. Maximal degree in co-relation 329172. Up to 382717 conditions per place. [2023-08-04 01:51:25,282 INFO L140 encePairwiseOnDemand]: 387/390 looper letters, 80 selfloop transitions, 3 changer transitions 0/109 dead transitions. [2023-08-04 01:51:25,282 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 109 transitions, 526 flow [2023-08-04 01:51:25,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-04 01:51:25,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-04 01:51:25,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 767 transitions. [2023-08-04 01:51:25,295 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49166666666666664 [2023-08-04 01:51:25,295 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 767 transitions. [2023-08-04 01:51:25,295 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 767 transitions. [2023-08-04 01:51:25,295 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 01:51:25,296 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 767 transitions. [2023-08-04 01:51:25,297 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 191.75) internal successors, (767), 4 states have internal predecessors, (767), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:51:25,299 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 390.0) internal successors, (1950), 5 states have internal predecessors, (1950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:51:25,300 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 390.0) internal successors, (1950), 5 states have internal predecessors, (1950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:51:25,300 INFO L175 Difference]: Start difference. First operand has 82 places, 102 transitions, 347 flow. Second operand 4 states and 767 transitions. [2023-08-04 01:51:25,300 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 109 transitions, 526 flow [2023-08-04 01:51:25,419 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 109 transitions, 522 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-04 01:51:25,420 INFO L231 Difference]: Finished difference. Result has 83 places, 101 transitions, 344 flow [2023-08-04 01:51:25,420 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=390, PETRI_DIFFERENCE_MINUEND_FLOW=338, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=344, PETRI_PLACES=83, PETRI_TRANSITIONS=101} [2023-08-04 01:51:25,421 INFO L281 CegarLoopForPetriNet]: 79 programPoint places, 4 predicate places. [2023-08-04 01:51:25,421 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 101 transitions, 344 flow [2023-08-04 01:51:25,421 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 174.6) internal successors, (873), 5 states have internal predecessors, (873), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:51:25,422 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 01:51:25,422 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 01:51:25,427 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-04 01:51:25,627 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 01:51:25,628 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-04 01:51:25,628 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 01:51:25,628 INFO L85 PathProgramCache]: Analyzing trace with hash 105880996, now seen corresponding path program 1 times [2023-08-04 01:51:25,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 01:51:25,628 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [672189292] [2023-08-04 01:51:25,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 01:51:25,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 01:51:25,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 01:51:25,704 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-08-04 01:51:25,704 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 01:51:25,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [672189292] [2023-08-04 01:51:25,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [672189292] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 01:51:25,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [354415251] [2023-08-04 01:51:25,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 01:51:25,704 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 01:51:25,705 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 01:51:25,722 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) [2023-08-04 01:51:25,724 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-04 01:51:25,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 01:51:25,794 INFO L262 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-04 01:51:25,795 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 01:51:25,809 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-08-04 01:51:25,810 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-04 01:51:25,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [354415251] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 01:51:25,810 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-04 01:51:25,810 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 6 [2023-08-04 01:51:25,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761494230] [2023-08-04 01:51:25,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 01:51:25,810 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-04 01:51:25,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 01:51:25,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-04 01:51:25,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-04 01:51:25,820 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 171 out of 390 [2023-08-04 01:51:25,821 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 101 transitions, 344 flow. Second operand has 5 states, 5 states have (on average 174.6) internal successors, (873), 5 states have internal predecessors, (873), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:51:25,821 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 01:51:25,821 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 171 of 390 [2023-08-04 01:51:25,821 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 01:51:53,024 INFO L124 PetriNetUnfolderBase]: 296126/405573 cut-off events. [2023-08-04 01:51:53,024 INFO L125 PetriNetUnfolderBase]: For 73934/73934 co-relation queries the response was YES. [2023-08-04 01:51:55,911 INFO L83 FinitePrefix]: Finished finitePrefix Result has 842244 conditions, 405573 events. 296126/405573 cut-off events. For 73934/73934 co-relation queries the response was YES. Maximal size of possible extension queue 6512. Compared 2861897 event pairs, 63173 based on Foata normal form. 0/377455 useless extension candidates. Maximal degree in co-relation 329656. Up to 381748 conditions per place. [2023-08-04 01:51:57,890 INFO L140 encePairwiseOnDemand]: 386/390 looper letters, 89 selfloop transitions, 5 changer transitions 0/119 dead transitions. [2023-08-04 01:51:57,890 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 119 transitions, 564 flow [2023-08-04 01:51:57,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-04 01:51:57,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-04 01:51:57,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 948 transitions. [2023-08-04 01:51:57,893 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48615384615384616 [2023-08-04 01:51:57,893 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 948 transitions. [2023-08-04 01:51:57,893 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 948 transitions. [2023-08-04 01:51:57,894 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 01:51:57,894 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 948 transitions. [2023-08-04 01:51:57,896 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 189.6) internal successors, (948), 5 states have internal predecessors, (948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:51:57,898 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 390.0) internal successors, (2340), 6 states have internal predecessors, (2340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:51:57,898 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 390.0) internal successors, (2340), 6 states have internal predecessors, (2340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:51:57,898 INFO L175 Difference]: Start difference. First operand has 83 places, 101 transitions, 344 flow. Second operand 5 states and 948 transitions. [2023-08-04 01:51:57,899 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 119 transitions, 564 flow [2023-08-04 01:51:57,974 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 119 transitions, 548 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-08-04 01:51:57,976 INFO L231 Difference]: Finished difference. Result has 82 places, 103 transitions, 345 flow [2023-08-04 01:51:57,976 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=390, PETRI_DIFFERENCE_MINUEND_FLOW=322, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=345, PETRI_PLACES=82, PETRI_TRANSITIONS=103} [2023-08-04 01:51:57,978 INFO L281 CegarLoopForPetriNet]: 79 programPoint places, 3 predicate places. [2023-08-04 01:51:57,978 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 103 transitions, 345 flow [2023-08-04 01:51:57,978 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 174.6) internal successors, (873), 5 states have internal predecessors, (873), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:51:57,978 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 01:51:57,979 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 01:51:57,993 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-08-04 01:51:58,184 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 01:51:58,184 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-04 01:51:58,184 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 01:51:58,185 INFO L85 PathProgramCache]: Analyzing trace with hash -768416161, now seen corresponding path program 1 times [2023-08-04 01:51:58,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 01:51:58,185 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1419912302] [2023-08-04 01:51:58,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 01:51:58,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 01:51:58,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 01:51:58,236 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-08-04 01:51:58,236 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 01:51:58,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1419912302] [2023-08-04 01:51:58,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1419912302] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 01:51:58,236 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 01:51:58,236 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-04 01:51:58,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442760612] [2023-08-04 01:51:58,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 01:51:58,237 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 01:51:58,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 01:51:58,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 01:51:58,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-04 01:51:58,245 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 172 out of 390 [2023-08-04 01:51:58,245 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 103 transitions, 345 flow. Second operand has 3 states, 3 states have (on average 177.33333333333334) internal successors, (532), 3 states have internal predecessors, (532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:51:58,245 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 01:51:58,245 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 172 of 390 [2023-08-04 01:51:58,245 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 01:52:25,256 INFO L124 PetriNetUnfolderBase]: 295134/402709 cut-off events. [2023-08-04 01:52:25,256 INFO L125 PetriNetUnfolderBase]: For 68422/68422 co-relation queries the response was YES. [2023-08-04 01:52:27,668 INFO L83 FinitePrefix]: Finished finitePrefix Result has 829372 conditions, 402709 events. 295134/402709 cut-off events. For 68422/68422 co-relation queries the response was YES. Maximal size of possible extension queue 6884. Compared 2808440 event pairs, 208089 based on Foata normal form. 16/374427 useless extension candidates. Maximal degree in co-relation 324646. Up to 381117 conditions per place. [2023-08-04 01:52:29,205 INFO L140 encePairwiseOnDemand]: 387/390 looper letters, 81 selfloop transitions, 2 changer transitions 0/108 dead transitions. [2023-08-04 01:52:29,205 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 108 transitions, 520 flow [2023-08-04 01:52:29,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 01:52:29,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 01:52:29,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 597 transitions. [2023-08-04 01:52:29,229 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5102564102564102 [2023-08-04 01:52:29,229 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 597 transitions. [2023-08-04 01:52:29,229 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 597 transitions. [2023-08-04 01:52:29,229 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 01:52:29,229 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 597 transitions. [2023-08-04 01:52:29,230 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 199.0) internal successors, (597), 3 states have internal predecessors, (597), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:52:29,231 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 390.0) internal successors, (1560), 4 states have internal predecessors, (1560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:52:29,232 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 390.0) internal successors, (1560), 4 states have internal predecessors, (1560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:52:29,232 INFO L175 Difference]: Start difference. First operand has 82 places, 103 transitions, 345 flow. Second operand 3 states and 597 transitions. [2023-08-04 01:52:29,232 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 108 transitions, 520 flow [2023-08-04 01:52:29,307 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 108 transitions, 519 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-04 01:52:29,308 INFO L231 Difference]: Finished difference. Result has 83 places, 102 transitions, 343 flow [2023-08-04 01:52:29,309 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=390, PETRI_DIFFERENCE_MINUEND_FLOW=339, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=343, PETRI_PLACES=83, PETRI_TRANSITIONS=102} [2023-08-04 01:52:29,309 INFO L281 CegarLoopForPetriNet]: 79 programPoint places, 4 predicate places. [2023-08-04 01:52:29,309 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 102 transitions, 343 flow [2023-08-04 01:52:29,309 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 177.33333333333334) internal successors, (532), 3 states have internal predecessors, (532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:52:29,309 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 01:52:29,309 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 01:52:29,310 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-04 01:52:29,310 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-04 01:52:29,310 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 01:52:29,310 INFO L85 PathProgramCache]: Analyzing trace with hash -641028711, now seen corresponding path program 1 times [2023-08-04 01:52:29,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 01:52:29,310 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1896094182] [2023-08-04 01:52:29,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 01:52:29,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 01:52:29,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 01:52:29,349 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-08-04 01:52:29,350 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 01:52:29,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1896094182] [2023-08-04 01:52:29,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1896094182] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 01:52:29,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1747929428] [2023-08-04 01:52:29,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 01:52:29,350 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 01:52:29,350 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 01:52:29,360 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) [2023-08-04 01:52:29,362 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-08-04 01:52:29,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 01:52:29,436 INFO L262 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-04 01:52:29,437 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 01:52:29,448 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-08-04 01:52:29,449 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-04 01:52:29,460 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-08-04 01:52:29,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1747929428] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-04 01:52:29,460 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-04 01:52:29,461 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 5 [2023-08-04 01:52:29,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238864536] [2023-08-04 01:52:29,461 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-04 01:52:29,461 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-04 01:52:29,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 01:52:29,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-04 01:52:29,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-04 01:52:29,473 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 171 out of 390 [2023-08-04 01:52:29,473 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 102 transitions, 343 flow. Second operand has 5 states, 5 states have (on average 175.6) internal successors, (878), 5 states have internal predecessors, (878), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:52:29,473 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 01:52:29,474 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 171 of 390 [2023-08-04 01:52:29,474 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 01:52:56,300 INFO L124 PetriNetUnfolderBase]: 292830/399253 cut-off events. [2023-08-04 01:52:56,301 INFO L125 PetriNetUnfolderBase]: For 68134/68134 co-relation queries the response was YES. [2023-08-04 01:52:58,628 INFO L83 FinitePrefix]: Finished finitePrefix Result has 822700 conditions, 399253 events. 292830/399253 cut-off events. For 68134/68134 co-relation queries the response was YES. Maximal size of possible extension queue 6618. Compared 2772146 event pairs, 179541 based on Foata normal form. 32/371243 useless extension candidates. Maximal degree in co-relation 323298. Up to 377821 conditions per place. [2023-08-04 01:53:00,296 INFO L140 encePairwiseOnDemand]: 387/390 looper letters, 85 selfloop transitions, 3 changer transitions 0/113 dead transitions. [2023-08-04 01:53:00,296 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 113 transitions, 540 flow [2023-08-04 01:53:00,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-04 01:53:00,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-04 01:53:00,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 771 transitions. [2023-08-04 01:53:00,306 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49423076923076925 [2023-08-04 01:53:00,306 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 771 transitions. [2023-08-04 01:53:00,306 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 771 transitions. [2023-08-04 01:53:00,306 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 01:53:00,306 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 771 transitions. [2023-08-04 01:53:00,307 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 192.75) internal successors, (771), 4 states have internal predecessors, (771), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:53:00,309 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 390.0) internal successors, (1950), 5 states have internal predecessors, (1950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:53:00,309 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 390.0) internal successors, (1950), 5 states have internal predecessors, (1950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:53:00,309 INFO L175 Difference]: Start difference. First operand has 83 places, 102 transitions, 343 flow. Second operand 4 states and 771 transitions. [2023-08-04 01:53:00,309 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 113 transitions, 540 flow [2023-08-04 01:53:00,340 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 113 transitions, 536 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-04 01:53:00,341 INFO L231 Difference]: Finished difference. Result has 84 places, 101 transitions, 340 flow [2023-08-04 01:53:00,341 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=390, PETRI_DIFFERENCE_MINUEND_FLOW=334, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=340, PETRI_PLACES=84, PETRI_TRANSITIONS=101} [2023-08-04 01:53:00,342 INFO L281 CegarLoopForPetriNet]: 79 programPoint places, 5 predicate places. [2023-08-04 01:53:00,342 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 101 transitions, 340 flow [2023-08-04 01:53:00,342 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 175.6) internal successors, (878), 5 states have internal predecessors, (878), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:53:00,342 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 01:53:00,342 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 01:53:00,347 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-08-04 01:53:00,546 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 01:53:00,546 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-04 01:53:00,546 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 01:53:00,547 INFO L85 PathProgramCache]: Analyzing trace with hash 389419378, now seen corresponding path program 1 times [2023-08-04 01:53:00,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 01:53:00,547 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [216501101] [2023-08-04 01:53:00,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 01:53:00,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 01:53:00,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 01:53:00,618 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-08-04 01:53:00,618 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 01:53:00,618 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [216501101] [2023-08-04 01:53:00,618 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [216501101] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 01:53:00,618 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1453698457] [2023-08-04 01:53:00,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 01:53:00,618 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 01:53:00,618 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 01:53:00,620 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) [2023-08-04 01:53:00,621 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-08-04 01:53:00,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 01:53:00,698 INFO L262 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-04 01:53:00,699 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 01:53:00,711 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-08-04 01:53:00,711 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-04 01:53:00,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1453698457] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 01:53:00,711 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-04 01:53:00,711 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 6 [2023-08-04 01:53:00,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1848296310] [2023-08-04 01:53:00,711 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 01:53:00,711 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-04 01:53:00,712 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 01:53:00,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-04 01:53:00,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-04 01:53:00,723 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 171 out of 390 [2023-08-04 01:53:00,723 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 101 transitions, 340 flow. Second operand has 5 states, 5 states have (on average 175.6) internal successors, (878), 5 states have internal predecessors, (878), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:53:00,723 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 01:53:00,723 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 171 of 390 [2023-08-04 01:53:00,723 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 01:53:27,790 INFO L124 PetriNetUnfolderBase]: 291806/403165 cut-off events. [2023-08-04 01:53:27,791 INFO L125 PetriNetUnfolderBase]: For 44518/44518 co-relation queries the response was YES. [2023-08-04 01:53:30,311 INFO L83 FinitePrefix]: Finished finitePrefix Result has 825140 conditions, 403165 events. 291806/403165 cut-off events. For 44518/44518 co-relation queries the response was YES. Maximal size of possible extension queue 6618. Compared 2912241 event pairs, 9211 based on Foata normal form. 0/376709 useless extension candidates. Maximal degree in co-relation 325170. Up to 372772 conditions per place. [2023-08-04 01:53:30,539 INFO L140 encePairwiseOnDemand]: 386/390 looper letters, 0 selfloop transitions, 0 changer transitions 125/125 dead transitions. [2023-08-04 01:53:30,539 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 125 transitions, 586 flow [2023-08-04 01:53:30,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-04 01:53:30,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-04 01:53:30,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 954 transitions. [2023-08-04 01:53:30,542 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48923076923076925 [2023-08-04 01:53:30,542 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 954 transitions. [2023-08-04 01:53:30,542 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 954 transitions. [2023-08-04 01:53:30,542 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 01:53:30,543 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 954 transitions. [2023-08-04 01:53:30,544 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 190.8) internal successors, (954), 5 states have internal predecessors, (954), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:53:30,546 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 390.0) internal successors, (2340), 6 states have internal predecessors, (2340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:53:30,546 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 390.0) internal successors, (2340), 6 states have internal predecessors, (2340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:53:30,546 INFO L175 Difference]: Start difference. First operand has 84 places, 101 transitions, 340 flow. Second operand 5 states and 954 transitions. [2023-08-04 01:53:30,546 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 125 transitions, 586 flow [2023-08-04 01:53:30,603 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 125 transitions, 570 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-08-04 01:53:30,604 INFO L231 Difference]: Finished difference. Result has 82 places, 0 transitions, 0 flow [2023-08-04 01:53:30,604 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=390, PETRI_DIFFERENCE_MINUEND_FLOW=318, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=82, PETRI_TRANSITIONS=0} [2023-08-04 01:53:30,604 INFO L281 CegarLoopForPetriNet]: 79 programPoint places, 3 predicate places. [2023-08-04 01:53:30,604 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 0 transitions, 0 flow [2023-08-04 01:53:30,605 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 175.6) internal successors, (878), 5 states have internal predecessors, (878), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:53:30,605 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 4 remaining) [2023-08-04 01:53:30,605 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2023-08-04 01:53:30,605 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-08-04 01:53:30,605 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-08-04 01:53:30,610 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-08-04 01:53:30,810 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 01:53:30,811 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 01:53:30,811 INFO L307 ceAbstractionStarter]: Result for error location InUseError was SAFE,SAFE,SAFE,SAFE (1/2) [2023-08-04 01:53:30,815 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 194 places, 235 transitions, 614 flow [2023-08-04 01:53:32,359 INFO L124 PetriNetUnfolderBase]: 5482/20040 cut-off events. [2023-08-04 01:53:32,359 INFO L125 PetriNetUnfolderBase]: For 4176/4176 co-relation queries the response was YES. [2023-08-04 01:53:32,460 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24425 conditions, 20040 events. 5482/20040 cut-off events. For 4176/4176 co-relation queries the response was YES. Maximal size of possible extension queue 370. Compared 209353 event pairs, 162 based on Foata normal form. 0/17079 useless extension candidates. Maximal degree in co-relation 12057. Up to 1024 conditions per place. [2023-08-04 01:53:32,460 INFO L82 GeneralOperation]: Start removeDead. Operand has 194 places, 235 transitions, 614 flow [2023-08-04 01:53:32,537 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 194 places, 235 transitions, 614 flow [2023-08-04 01:53:32,538 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-04 01:53:32,538 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 194 places, 235 transitions, 614 flow [2023-08-04 01:53:32,538 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 194 places, 235 transitions, 614 flow [2023-08-04 01:53:32,538 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 194 places, 235 transitions, 614 flow [2023-08-04 01:53:33,879 INFO L124 PetriNetUnfolderBase]: 5482/20040 cut-off events. [2023-08-04 01:53:33,879 INFO L125 PetriNetUnfolderBase]: For 4176/4176 co-relation queries the response was YES. [2023-08-04 01:53:34,011 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24425 conditions, 20040 events. 5482/20040 cut-off events. For 4176/4176 co-relation queries the response was YES. Maximal size of possible extension queue 370. Compared 209353 event pairs, 162 based on Foata normal form. 0/17079 useless extension candidates. Maximal degree in co-relation 12057. Up to 1024 conditions per place. [2023-08-04 01:53:34,225 INFO L119 LiptonReduction]: Number of co-enabled transitions 13440 [2023-08-04 01:53:37,078 INFO L134 LiptonReduction]: Checked pairs total: 65246 [2023-08-04 01:53:37,079 INFO L136 LiptonReduction]: Total number of compositions: 155 [2023-08-04 01:53:37,080 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-04 01:53:37,080 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;@59cc21aa, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-04 01:53:37,080 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-04 01:53:37,082 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-04 01:53:37,082 INFO L124 PetriNetUnfolderBase]: 5/59 cut-off events. [2023-08-04 01:53:37,083 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-08-04 01:53:37,083 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 01:53:37,083 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 01:53:37,083 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 01:53:37,083 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 01:53:37,083 INFO L85 PathProgramCache]: Analyzing trace with hash 8769335, now seen corresponding path program 1 times [2023-08-04 01:53:37,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 01:53:37,083 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [219709816] [2023-08-04 01:53:37,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 01:53:37,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 01:53:37,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 01:53:37,134 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 01:53:37,135 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 01:53:37,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [219709816] [2023-08-04 01:53:37,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [219709816] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 01:53:37,135 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 01:53:37,135 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-04 01:53:37,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964182525] [2023-08-04 01:53:37,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 01:53:37,136 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 01:53:37,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 01:53:37,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 01:53:37,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-04 01:53:37,143 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 172 out of 390 [2023-08-04 01:53:37,144 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 102 transitions, 348 flow. Second operand has 3 states, 3 states have (on average 175.0) internal successors, (525), 3 states have internal predecessors, (525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:53:37,144 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 01:53:37,144 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 172 of 390 [2023-08-04 01:53:37,144 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 01:54:08,136 INFO L124 PetriNetUnfolderBase]: 308546/425713 cut-off events. [2023-08-04 01:54:08,136 INFO L125 PetriNetUnfolderBase]: For 99890/99890 co-relation queries the response was YES. [2023-08-04 01:54:10,978 INFO L83 FinitePrefix]: Finished finitePrefix Result has 898601 conditions, 425713 events. 308546/425713 cut-off events. For 99890/99890 co-relation queries the response was YES. Maximal size of possible extension queue 6469. Compared 3054286 event pairs, 212879 based on Foata normal form. 0/396385 useless extension candidates. Maximal degree in co-relation 371895. Up to 398775 conditions per place. [2023-08-04 01:54:13,108 INFO L140 encePairwiseOnDemand]: 386/390 looper letters, 74 selfloop transitions, 2 changer transitions 0/104 dead transitions. [2023-08-04 01:54:13,108 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 104 transitions, 504 flow [2023-08-04 01:54:13,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 01:54:13,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 01:54:13,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 594 transitions. [2023-08-04 01:54:13,110 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5076923076923077 [2023-08-04 01:54:13,110 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 594 transitions. [2023-08-04 01:54:13,110 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 594 transitions. [2023-08-04 01:54:13,110 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 01:54:13,110 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 594 transitions. [2023-08-04 01:54:13,111 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 198.0) internal successors, (594), 3 states have internal predecessors, (594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:54:13,113 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 390.0) internal successors, (1560), 4 states have internal predecessors, (1560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:54:13,113 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 390.0) internal successors, (1560), 4 states have internal predecessors, (1560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:54:13,113 INFO L175 Difference]: Start difference. First operand has 79 places, 102 transitions, 348 flow. Second operand 3 states and 594 transitions. [2023-08-04 01:54:13,113 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 104 transitions, 504 flow [2023-08-04 01:54:13,168 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 104 transitions, 504 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-04 01:54:13,169 INFO L231 Difference]: Finished difference. Result has 81 places, 102 transitions, 358 flow [2023-08-04 01:54:13,170 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=390, PETRI_DIFFERENCE_MINUEND_FLOW=346, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=358, PETRI_PLACES=81, PETRI_TRANSITIONS=102} [2023-08-04 01:54:13,170 INFO L281 CegarLoopForPetriNet]: 79 programPoint places, 2 predicate places. [2023-08-04 01:54:13,170 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 102 transitions, 358 flow [2023-08-04 01:54:13,171 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 175.0) internal successors, (525), 3 states have internal predecessors, (525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:54:13,171 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 01:54:13,171 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 01:54:13,171 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-04 01:54:13,171 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 01:54:13,171 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 01:54:13,171 INFO L85 PathProgramCache]: Analyzing trace with hash -1655093435, now seen corresponding path program 1 times [2023-08-04 01:54:13,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 01:54:13,172 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [430698621] [2023-08-04 01:54:13,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 01:54:13,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 01:54:13,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 01:54:13,207 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 01:54:13,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 01:54:13,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [430698621] [2023-08-04 01:54:13,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [430698621] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 01:54:13,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1674856577] [2023-08-04 01:54:13,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 01:54:13,208 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 01:54:13,208 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 01:54:13,221 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) [2023-08-04 01:54:13,233 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-08-04 01:54:13,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 01:54:13,294 INFO L262 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-04 01:54:13,295 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 01:54:13,301 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-04 01:54:13,301 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-04 01:54:13,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1674856577] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 01:54:13,301 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-04 01:54:13,301 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-08-04 01:54:13,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1872422638] [2023-08-04 01:54:13,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 01:54:13,302 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 01:54:13,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 01:54:13,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 01:54:13,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-04 01:54:13,309 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 172 out of 390 [2023-08-04 01:54:13,309 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 102 transitions, 358 flow. Second operand has 3 states, 3 states have (on average 176.0) internal successors, (528), 3 states have internal predecessors, (528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:54:13,309 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 01:54:13,309 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 172 of 390 [2023-08-04 01:54:13,309 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 01:54:41,986 INFO L124 PetriNetUnfolderBase]: 306192/420467 cut-off events. [2023-08-04 01:54:41,987 INFO L125 PetriNetUnfolderBase]: For 104295/104295 co-relation queries the response was YES. [2023-08-04 01:54:44,586 INFO L83 FinitePrefix]: Finished finitePrefix Result has 889566 conditions, 420467 events. 306192/420467 cut-off events. For 104295/104295 co-relation queries the response was YES. Maximal size of possible extension queue 6752. Compared 2988374 event pairs, 211818 based on Foata normal form. 0/391049 useless extension candidates. Maximal degree in co-relation 889534. Up to 395505 conditions per place. [2023-08-04 01:54:46,375 INFO L140 encePairwiseOnDemand]: 387/390 looper letters, 77 selfloop transitions, 2 changer transitions 0/107 dead transitions. [2023-08-04 01:54:46,375 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 107 transitions, 526 flow [2023-08-04 01:54:46,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 01:54:46,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 01:54:46,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 595 transitions. [2023-08-04 01:54:46,376 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5085470085470085 [2023-08-04 01:54:46,377 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 595 transitions. [2023-08-04 01:54:46,377 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 595 transitions. [2023-08-04 01:54:46,377 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 01:54:46,377 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 595 transitions. [2023-08-04 01:54:46,378 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 198.33333333333334) internal successors, (595), 3 states have internal predecessors, (595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:54:46,379 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 390.0) internal successors, (1560), 4 states have internal predecessors, (1560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:54:46,379 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 390.0) internal successors, (1560), 4 states have internal predecessors, (1560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:54:46,379 INFO L175 Difference]: Start difference. First operand has 81 places, 102 transitions, 358 flow. Second operand 3 states and 595 transitions. [2023-08-04 01:54:46,379 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 107 transitions, 526 flow [2023-08-04 01:54:46,462 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 107 transitions, 524 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-04 01:54:46,463 INFO L231 Difference]: Finished difference. Result has 83 places, 103 transitions, 368 flow [2023-08-04 01:54:46,463 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=390, PETRI_DIFFERENCE_MINUEND_FLOW=356, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=368, PETRI_PLACES=83, PETRI_TRANSITIONS=103} [2023-08-04 01:54:46,463 INFO L281 CegarLoopForPetriNet]: 79 programPoint places, 4 predicate places. [2023-08-04 01:54:46,463 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 103 transitions, 368 flow [2023-08-04 01:54:46,464 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 176.0) internal successors, (528), 3 states have internal predecessors, (528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:54:46,464 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 01:54:46,464 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 01:54:46,471 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-08-04 01:54:46,668 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,SelfDestructingSolverStorable12 [2023-08-04 01:54:46,669 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 01:54:46,669 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 01:54:46,669 INFO L85 PathProgramCache]: Analyzing trace with hash -1088859315, now seen corresponding path program 1 times [2023-08-04 01:54:46,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 01:54:46,669 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1452286478] [2023-08-04 01:54:46,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 01:54:46,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 01:54:46,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 01:54:46,694 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-04 01:54:46,694 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 01:54:46,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1452286478] [2023-08-04 01:54:46,694 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1452286478] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 01:54:46,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1280261367] [2023-08-04 01:54:46,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 01:54:46,694 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 01:54:46,694 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 01:54:46,695 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) [2023-08-04 01:54:46,709 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-08-04 01:54:46,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 01:54:46,772 INFO L262 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-04 01:54:46,773 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 01:54:46,776 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-04 01:54:46,776 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-04 01:54:46,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1280261367] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 01:54:46,777 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-04 01:54:46,777 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-08-04 01:54:46,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1592502980] [2023-08-04 01:54:46,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 01:54:46,777 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 01:54:46,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 01:54:46,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 01:54:46,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-04 01:54:46,783 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 172 out of 390 [2023-08-04 01:54:46,784 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 103 transitions, 368 flow. Second operand has 3 states, 3 states have (on average 177.0) internal successors, (531), 3 states have internal predecessors, (531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:54:46,784 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 01:54:46,784 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 172 of 390 [2023-08-04 01:54:46,784 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 01:55:14,410 INFO L124 PetriNetUnfolderBase]: 304272/416909 cut-off events. [2023-08-04 01:55:14,411 INFO L125 PetriNetUnfolderBase]: For 101861/101861 co-relation queries the response was YES. [2023-08-04 01:55:17,007 INFO L83 FinitePrefix]: Finished finitePrefix Result has 883061 conditions, 416909 events. 304272/416909 cut-off events. For 101861/101861 co-relation queries the response was YES. Maximal size of possible extension queue 7169. Compared 2945141 event pairs, 210923 based on Foata normal form. 0/387653 useless extension candidates. Maximal degree in co-relation 392288. Up to 392561 conditions per place. [2023-08-04 01:55:18,872 INFO L140 encePairwiseOnDemand]: 387/390 looper letters, 80 selfloop transitions, 2 changer transitions 0/110 dead transitions. [2023-08-04 01:55:18,872 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 110 transitions, 546 flow [2023-08-04 01:55:18,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 01:55:18,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 01:55:18,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 597 transitions. [2023-08-04 01:55:18,873 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5102564102564102 [2023-08-04 01:55:18,873 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 597 transitions. [2023-08-04 01:55:18,874 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 597 transitions. [2023-08-04 01:55:18,874 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 01:55:18,874 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 597 transitions. [2023-08-04 01:55:18,875 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 199.0) internal successors, (597), 3 states have internal predecessors, (597), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:55:18,876 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 390.0) internal successors, (1560), 4 states have internal predecessors, (1560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:55:18,876 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 390.0) internal successors, (1560), 4 states have internal predecessors, (1560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:55:18,876 INFO L175 Difference]: Start difference. First operand has 83 places, 103 transitions, 368 flow. Second operand 3 states and 597 transitions. [2023-08-04 01:55:18,876 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 110 transitions, 546 flow [2023-08-04 01:55:18,951 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 110 transitions, 544 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-04 01:55:18,952 INFO L231 Difference]: Finished difference. Result has 85 places, 104 transitions, 378 flow [2023-08-04 01:55:18,952 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=390, PETRI_DIFFERENCE_MINUEND_FLOW=366, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=378, PETRI_PLACES=85, PETRI_TRANSITIONS=104} [2023-08-04 01:55:18,952 INFO L281 CegarLoopForPetriNet]: 79 programPoint places, 6 predicate places. [2023-08-04 01:55:18,953 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 104 transitions, 378 flow [2023-08-04 01:55:18,953 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 177.0) internal successors, (531), 3 states have internal predecessors, (531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:55:18,953 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 01:55:18,953 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 01:55:18,958 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-08-04 01:55:19,157 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-08-04 01:55:19,157 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 01:55:19,158 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 01:55:19,158 INFO L85 PathProgramCache]: Analyzing trace with hash 123824589, now seen corresponding path program 1 times [2023-08-04 01:55:19,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 01:55:19,158 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1139289553] [2023-08-04 01:55:19,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 01:55:19,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 01:55:19,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 01:55:19,185 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-04 01:55:19,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 01:55:19,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1139289553] [2023-08-04 01:55:19,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1139289553] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 01:55:19,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [109165388] [2023-08-04 01:55:19,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 01:55:19,185 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 01:55:19,185 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 01:55:19,205 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) [2023-08-04 01:55:19,215 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-08-04 01:55:19,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 01:55:19,283 INFO L262 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-04 01:55:19,284 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 01:55:19,288 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-04 01:55:19,289 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-04 01:55:19,289 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [109165388] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 01:55:19,289 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-04 01:55:19,289 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-08-04 01:55:19,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678808244] [2023-08-04 01:55:19,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 01:55:19,289 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 01:55:19,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 01:55:19,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 01:55:19,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-04 01:55:19,297 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 172 out of 390 [2023-08-04 01:55:19,297 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 104 transitions, 378 flow. Second operand has 3 states, 3 states have (on average 178.0) internal successors, (534), 3 states have internal predecessors, (534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:55:19,297 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 01:55:19,297 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 172 of 390 [2023-08-04 01:55:19,297 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 01:55:47,015 INFO L124 PetriNetUnfolderBase]: 304056/420797 cut-off events. [2023-08-04 01:55:47,015 INFO L125 PetriNetUnfolderBase]: For 74213/74213 co-relation queries the response was YES. [2023-08-04 01:55:49,655 INFO L83 FinitePrefix]: Finished finitePrefix Result has 887262 conditions, 420797 events. 304056/420797 cut-off events. For 74213/74213 co-relation queries the response was YES. Maximal size of possible extension queue 7681. Compared 3042354 event pairs, 210236 based on Foata normal form. 0/392999 useless extension candidates. Maximal degree in co-relation 393424. Up to 389705 conditions per place. [2023-08-04 01:55:51,713 INFO L140 encePairwiseOnDemand]: 387/390 looper letters, 83 selfloop transitions, 2 changer transitions 0/113 dead transitions. [2023-08-04 01:55:51,713 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 113 transitions, 566 flow [2023-08-04 01:55:51,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 01:55:51,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 01:55:51,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 599 transitions. [2023-08-04 01:55:51,715 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5119658119658119 [2023-08-04 01:55:51,715 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 599 transitions. [2023-08-04 01:55:51,728 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 599 transitions. [2023-08-04 01:55:51,729 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 01:55:51,729 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 599 transitions. [2023-08-04 01:55:51,730 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 199.66666666666666) internal successors, (599), 3 states have internal predecessors, (599), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:55:51,739 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 390.0) internal successors, (1560), 4 states have internal predecessors, (1560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:55:51,748 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 390.0) internal successors, (1560), 4 states have internal predecessors, (1560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:55:51,749 INFO L175 Difference]: Start difference. First operand has 85 places, 104 transitions, 378 flow. Second operand 3 states and 599 transitions. [2023-08-04 01:55:51,749 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 113 transitions, 566 flow [2023-08-04 01:55:51,813 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 113 transitions, 564 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-04 01:55:51,814 INFO L231 Difference]: Finished difference. Result has 87 places, 105 transitions, 388 flow [2023-08-04 01:55:51,814 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=390, PETRI_DIFFERENCE_MINUEND_FLOW=376, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=388, PETRI_PLACES=87, PETRI_TRANSITIONS=105} [2023-08-04 01:55:51,815 INFO L281 CegarLoopForPetriNet]: 79 programPoint places, 8 predicate places. [2023-08-04 01:55:51,816 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 105 transitions, 388 flow [2023-08-04 01:55:51,817 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 178.0) internal successors, (534), 3 states have internal predecessors, (534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:55:51,817 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 01:55:51,817 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 01:55:51,830 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2023-08-04 01:55:52,021 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,SelfDestructingSolverStorable14 [2023-08-04 01:55:52,021 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 01:55:52,021 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 01:55:52,021 INFO L85 PathProgramCache]: Analyzing trace with hash -424989648, now seen corresponding path program 1 times [2023-08-04 01:55:52,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 01:55:52,022 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [28870119] [2023-08-04 01:55:52,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 01:55:52,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 01:55:52,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 01:55:52,086 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-04 01:55:52,086 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 01:55:52,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [28870119] [2023-08-04 01:55:52,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [28870119] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 01:55:52,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [802147118] [2023-08-04 01:55:52,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 01:55:52,086 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 01:55:52,087 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 01:55:52,105 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) [2023-08-04 01:55:52,176 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-08-04 01:55:52,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 01:55:52,239 INFO L262 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-04 01:55:52,240 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 01:55:52,249 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-08-04 01:55:52,249 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-04 01:55:52,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [802147118] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 01:55:52,250 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-04 01:55:52,250 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-08-04 01:55:52,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [116608973] [2023-08-04 01:55:52,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 01:55:52,250 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 01:55:52,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 01:55:52,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 01:55:52,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-04 01:55:52,258 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 172 out of 390 [2023-08-04 01:55:52,258 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 105 transitions, 388 flow. Second operand has 3 states, 3 states have (on average 179.0) internal successors, (537), 3 states have internal predecessors, (537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:55:52,258 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 01:55:52,259 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 172 of 390 [2023-08-04 01:55:52,259 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 01:56:21,185 INFO L124 PetriNetUnfolderBase]: 298968/415069 cut-off events. [2023-08-04 01:56:21,185 INFO L125 PetriNetUnfolderBase]: For 74869/74869 co-relation queries the response was YES. [2023-08-04 01:56:23,864 INFO L83 FinitePrefix]: Finished finitePrefix Result has 879663 conditions, 415069 events. 298968/415069 cut-off events. For 74869/74869 co-relation queries the response was YES. Maximal size of possible extension queue 8201. Compared 3024715 event pairs, 215818 based on Foata normal form. 0/389591 useless extension candidates. Maximal degree in co-relation 419080. Up to 361273 conditions per place. [2023-08-04 01:56:25,896 INFO L140 encePairwiseOnDemand]: 387/390 looper letters, 93 selfloop transitions, 2 changer transitions 0/123 dead transitions. [2023-08-04 01:56:25,896 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 123 transitions, 638 flow [2023-08-04 01:56:25,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 01:56:25,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 01:56:25,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 608 transitions. [2023-08-04 01:56:25,898 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5196581196581197 [2023-08-04 01:56:25,898 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 608 transitions. [2023-08-04 01:56:25,898 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 608 transitions. [2023-08-04 01:56:25,898 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 01:56:25,898 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 608 transitions. [2023-08-04 01:56:25,899 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 202.66666666666666) internal successors, (608), 3 states have internal predecessors, (608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:56:25,900 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 390.0) internal successors, (1560), 4 states have internal predecessors, (1560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:56:25,900 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 390.0) internal successors, (1560), 4 states have internal predecessors, (1560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:56:25,900 INFO L175 Difference]: Start difference. First operand has 87 places, 105 transitions, 388 flow. Second operand 3 states and 608 transitions. [2023-08-04 01:56:25,900 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 123 transitions, 638 flow [2023-08-04 01:56:25,983 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 123 transitions, 636 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-04 01:56:25,985 INFO L231 Difference]: Finished difference. Result has 89 places, 106 transitions, 398 flow [2023-08-04 01:56:25,985 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=390, PETRI_DIFFERENCE_MINUEND_FLOW=386, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=398, PETRI_PLACES=89, PETRI_TRANSITIONS=106} [2023-08-04 01:56:25,985 INFO L281 CegarLoopForPetriNet]: 79 programPoint places, 10 predicate places. [2023-08-04 01:56:25,985 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 106 transitions, 398 flow [2023-08-04 01:56:25,985 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 179.0) internal successors, (537), 3 states have internal predecessors, (537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:56:25,985 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 01:56:25,986 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 01:56:26,004 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-08-04 01:56:26,191 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,SelfDestructingSolverStorable15 [2023-08-04 01:56:26,194 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 01:56:26,194 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 01:56:26,194 INFO L85 PathProgramCache]: Analyzing trace with hash -1581918274, now seen corresponding path program 1 times [2023-08-04 01:56:26,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 01:56:26,194 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1129527959] [2023-08-04 01:56:26,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 01:56:26,196 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 01:56:26,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 01:56:26,278 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-08-04 01:56:26,279 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 01:56:26,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1129527959] [2023-08-04 01:56:26,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1129527959] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 01:56:26,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [117884599] [2023-08-04 01:56:26,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 01:56:26,279 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 01:56:26,279 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 01:56:26,280 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) [2023-08-04 01:56:26,282 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-08-04 01:56:26,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 01:56:26,387 INFO L262 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-04 01:56:26,388 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 01:56:26,392 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-08-04 01:56:26,392 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-04 01:56:26,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [117884599] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 01:56:26,393 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-04 01:56:26,393 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-08-04 01:56:26,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [41395174] [2023-08-04 01:56:26,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 01:56:26,394 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 01:56:26,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 01:56:26,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 01:56:26,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-04 01:56:26,417 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 172 out of 390 [2023-08-04 01:56:26,418 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 106 transitions, 398 flow. Second operand has 3 states, 3 states have (on average 180.33333333333334) internal successors, (541), 3 states have internal predecessors, (541), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:56:26,418 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 01:56:26,418 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 172 of 390 [2023-08-04 01:56:26,418 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 01:56:56,601 INFO L124 PetriNetUnfolderBase]: 304023/425376 cut-off events. [2023-08-04 01:56:56,602 INFO L125 PetriNetUnfolderBase]: For 95550/95550 co-relation queries the response was YES. [2023-08-04 01:56:59,928 INFO L83 FinitePrefix]: Finished finitePrefix Result has 925807 conditions, 425376 events. 304023/425376 cut-off events. For 95550/95550 co-relation queries the response was YES. Maximal size of possible extension queue 7791. Compared 3143416 event pairs, 199163 based on Foata normal form. 0/409275 useless extension candidates. Maximal degree in co-relation 479376. Up to 322953 conditions per place. [2023-08-04 01:57:02,021 INFO L140 encePairwiseOnDemand]: 387/390 looper letters, 94 selfloop transitions, 2 changer transitions 0/124 dead transitions. [2023-08-04 01:57:02,021 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 124 transitions, 650 flow [2023-08-04 01:57:02,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 01:57:02,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 01:57:02,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 608 transitions. [2023-08-04 01:57:02,023 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5196581196581197 [2023-08-04 01:57:02,023 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 608 transitions. [2023-08-04 01:57:02,023 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 608 transitions. [2023-08-04 01:57:02,023 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 01:57:02,023 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 608 transitions. [2023-08-04 01:57:02,024 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 202.66666666666666) internal successors, (608), 3 states have internal predecessors, (608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:57:02,034 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 390.0) internal successors, (1560), 4 states have internal predecessors, (1560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:57:02,034 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 390.0) internal successors, (1560), 4 states have internal predecessors, (1560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:57:02,034 INFO L175 Difference]: Start difference. First operand has 89 places, 106 transitions, 398 flow. Second operand 3 states and 608 transitions. [2023-08-04 01:57:02,034 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 124 transitions, 650 flow [2023-08-04 01:57:02,408 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 124 transitions, 648 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-04 01:57:02,409 INFO L231 Difference]: Finished difference. Result has 91 places, 107 transitions, 408 flow [2023-08-04 01:57:02,409 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=390, PETRI_DIFFERENCE_MINUEND_FLOW=396, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=408, PETRI_PLACES=91, PETRI_TRANSITIONS=107} [2023-08-04 01:57:02,410 INFO L281 CegarLoopForPetriNet]: 79 programPoint places, 12 predicate places. [2023-08-04 01:57:02,410 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 107 transitions, 408 flow [2023-08-04 01:57:02,410 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 180.33333333333334) internal successors, (541), 3 states have internal predecessors, (541), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:57:02,410 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 01:57:02,410 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 01:57:02,433 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-08-04 01:57:02,617 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,SelfDestructingSolverStorable16 [2023-08-04 01:57:02,619 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 01:57:02,619 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 01:57:02,619 INFO L85 PathProgramCache]: Analyzing trace with hash -1200403274, now seen corresponding path program 1 times [2023-08-04 01:57:02,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 01:57:02,619 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [807603272] [2023-08-04 01:57:02,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 01:57:02,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 01:57:02,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 01:57:02,710 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-08-04 01:57:02,710 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 01:57:02,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [807603272] [2023-08-04 01:57:02,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [807603272] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 01:57:02,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [931032188] [2023-08-04 01:57:02,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 01:57:02,710 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 01:57:02,711 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 01:57:02,737 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) [2023-08-04 01:57:02,753 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-08-04 01:57:02,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 01:57:02,871 INFO L262 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-04 01:57:02,871 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 01:57:02,888 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-04 01:57:02,889 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-04 01:57:02,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [931032188] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 01:57:02,889 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-04 01:57:02,889 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-08-04 01:57:02,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1978153733] [2023-08-04 01:57:02,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 01:57:02,889 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 01:57:02,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 01:57:02,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 01:57:02,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-04 01:57:02,897 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 172 out of 390 [2023-08-04 01:57:02,897 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 107 transitions, 408 flow. Second operand has 3 states, 3 states have (on average 181.66666666666666) internal successors, (545), 3 states have internal predecessors, (545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:57:02,897 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 01:57:02,897 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 172 of 390 [2023-08-04 01:57:02,897 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 01:57:33,789 INFO L124 PetriNetUnfolderBase]: 300118/422883 cut-off events. [2023-08-04 01:57:33,789 INFO L125 PetriNetUnfolderBase]: For 110169/110169 co-relation queries the response was YES. [2023-08-04 01:57:36,905 INFO L83 FinitePrefix]: Finished finitePrefix Result has 945058 conditions, 422883 events. 300118/422883 cut-off events. For 110169/110169 co-relation queries the response was YES. Maximal size of possible extension queue 6760. Compared 3131997 event pairs, 212644 based on Foata normal form. 0/415647 useless extension candidates. Maximal degree in co-relation 507320. Up to 338731 conditions per place. [2023-08-04 01:57:38,836 INFO L140 encePairwiseOnDemand]: 387/390 looper letters, 95 selfloop transitions, 2 changer transitions 0/125 dead transitions. [2023-08-04 01:57:38,836 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 125 transitions, 662 flow [2023-08-04 01:57:38,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 01:57:38,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 01:57:38,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 608 transitions. [2023-08-04 01:57:38,838 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5196581196581197 [2023-08-04 01:57:38,838 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 608 transitions. [2023-08-04 01:57:38,838 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 608 transitions. [2023-08-04 01:57:38,838 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 01:57:38,838 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 608 transitions. [2023-08-04 01:57:38,839 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 202.66666666666666) internal successors, (608), 3 states have internal predecessors, (608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:57:38,840 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 390.0) internal successors, (1560), 4 states have internal predecessors, (1560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:57:38,840 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 390.0) internal successors, (1560), 4 states have internal predecessors, (1560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:57:38,840 INFO L175 Difference]: Start difference. First operand has 91 places, 107 transitions, 408 flow. Second operand 3 states and 608 transitions. [2023-08-04 01:57:38,840 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 125 transitions, 662 flow [2023-08-04 01:58:00,100 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 125 transitions, 660 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-04 01:58:00,102 INFO L231 Difference]: Finished difference. Result has 93 places, 108 transitions, 418 flow [2023-08-04 01:58:00,102 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=390, PETRI_DIFFERENCE_MINUEND_FLOW=406, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=418, PETRI_PLACES=93, PETRI_TRANSITIONS=108} [2023-08-04 01:58:00,103 INFO L281 CegarLoopForPetriNet]: 79 programPoint places, 14 predicate places. [2023-08-04 01:58:00,103 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 108 transitions, 418 flow [2023-08-04 01:58:00,103 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 181.66666666666666) internal successors, (545), 3 states have internal predecessors, (545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:58:00,103 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 01:58:00,104 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 01:58:00,111 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-08-04 01:58:00,309 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,SelfDestructingSolverStorable17 [2023-08-04 01:58:00,309 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 01:58:00,309 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 01:58:00,309 INFO L85 PathProgramCache]: Analyzing trace with hash -1671979025, now seen corresponding path program 1 times [2023-08-04 01:58:00,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 01:58:00,309 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [981721119] [2023-08-04 01:58:00,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 01:58:00,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 01:58:00,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 01:58:00,343 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-04 01:58:00,344 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 01:58:00,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [981721119] [2023-08-04 01:58:00,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [981721119] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 01:58:00,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [813736588] [2023-08-04 01:58:00,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 01:58:00,344 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 01:58:00,344 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 01:58:00,345 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) [2023-08-04 01:58:00,347 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-08-04 01:58:00,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 01:58:00,438 INFO L262 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-04 01:58:00,438 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 01:58:00,442 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-08-04 01:58:00,442 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-04 01:58:00,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [813736588] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 01:58:00,442 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-04 01:58:00,443 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 5 [2023-08-04 01:58:00,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935523090] [2023-08-04 01:58:00,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 01:58:00,443 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 01:58:00,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 01:58:00,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 01:58:00,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-04 01:58:00,450 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 172 out of 390 [2023-08-04 01:58:00,450 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 108 transitions, 418 flow. Second operand has 3 states, 3 states have (on average 183.0) internal successors, (549), 3 states have internal predecessors, (549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:58:00,450 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 01:58:00,450 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 172 of 390 [2023-08-04 01:58:00,450 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 01:58:33,865 INFO L124 PetriNetUnfolderBase]: 303829/429350 cut-off events. [2023-08-04 01:58:33,866 INFO L125 PetriNetUnfolderBase]: For 117363/117363 co-relation queries the response was YES. [2023-08-04 01:58:37,221 INFO L83 FinitePrefix]: Finished finitePrefix Result has 972612 conditions, 429350 events. 303829/429350 cut-off events. For 117363/117363 co-relation queries the response was YES. Maximal size of possible extension queue 6696. Compared 3180770 event pairs, 231949 based on Foata normal form. 0/427395 useless extension candidates. Maximal degree in co-relation 627234. Up to 368813 conditions per place. [2023-08-04 01:58:38,909 INFO L140 encePairwiseOnDemand]: 387/390 looper letters, 96 selfloop transitions, 2 changer transitions 0/126 dead transitions. [2023-08-04 01:58:38,909 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 126 transitions, 674 flow [2023-08-04 01:58:38,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 01:58:38,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 01:58:38,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 608 transitions. [2023-08-04 01:58:38,911 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5196581196581197 [2023-08-04 01:58:38,911 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 608 transitions. [2023-08-04 01:58:38,911 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 608 transitions. [2023-08-04 01:58:38,911 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 01:58:38,911 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 608 transitions. [2023-08-04 01:58:38,912 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 202.66666666666666) internal successors, (608), 3 states have internal predecessors, (608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:58:38,913 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 390.0) internal successors, (1560), 4 states have internal predecessors, (1560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:58:38,913 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 390.0) internal successors, (1560), 4 states have internal predecessors, (1560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:58:38,913 INFO L175 Difference]: Start difference. First operand has 93 places, 108 transitions, 418 flow. Second operand 3 states and 608 transitions. [2023-08-04 01:58:38,913 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 126 transitions, 674 flow Received shutdown request... [2023-08-04 01:58:57,686 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-08-04 01:58:57,686 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-08-04 01:58:57,782 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-08-04 01:58:57,787 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-08-04 01:58:57,986 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 01:58:57,987 WARN L619 AbstractCegarLoop]: Verification canceled: while executing RemoveRedundantFlow. [2023-08-04 01:58:57,987 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 01:58:57,987 INFO L307 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was TIMEOUT (2/2) [2023-08-04 01:58:57,988 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 2 thread instances [2023-08-04 01:58:57,988 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-04 01:58:57,991 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.08 01:58:57 BasicIcfg [2023-08-04 01:58:57,991 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-04 01:58:57,991 INFO L158 Benchmark]: Toolchain (without parser) took 662251.54ms. Allocated memory was 371.2MB in the beginning and 16.0GB in the end (delta: 15.6GB). Free memory was 338.2MB in the beginning and 11.3GB in the end (delta: -10.9GB). Peak memory consumption was 9.1GB. Max. memory is 16.0GB. [2023-08-04 01:58:57,991 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 255.9MB. Free memory is still 214.5MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-04 01:58:57,991 INFO L158 Benchmark]: CACSL2BoogieTranslator took 167.04ms. Allocated memory is still 371.2MB. Free memory was 338.2MB in the beginning and 326.6MB in the end (delta: 11.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. [2023-08-04 01:58:57,991 INFO L158 Benchmark]: Boogie Procedure Inliner took 26.02ms. Allocated memory is still 371.2MB. Free memory was 326.2MB in the beginning and 323.7MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-04 01:58:57,992 INFO L158 Benchmark]: Boogie Preprocessor took 20.98ms. Allocated memory is still 371.2MB. Free memory was 323.7MB in the beginning and 322.0MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-04 01:58:57,992 INFO L158 Benchmark]: RCFGBuilder took 412.68ms. Allocated memory is still 371.2MB. Free memory was 322.0MB in the beginning and 304.4MB in the end (delta: 17.6MB). Peak memory consumption was 16.8MB. Max. memory is 16.0GB. [2023-08-04 01:58:57,992 INFO L158 Benchmark]: TraceAbstraction took 661620.87ms. Allocated memory was 371.2MB in the beginning and 16.0GB in the end (delta: 15.6GB). Free memory was 303.6MB in the beginning and 11.3GB in the end (delta: -11.0GB). Peak memory consumption was 9.1GB. Max. memory is 16.0GB. [2023-08-04 01:58:57,993 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 255.9MB. Free memory is still 214.5MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 167.04ms. Allocated memory is still 371.2MB. Free memory was 338.2MB in the beginning and 326.6MB in the end (delta: 11.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 26.02ms. Allocated memory is still 371.2MB. Free memory was 326.2MB in the beginning and 323.7MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 20.98ms. Allocated memory is still 371.2MB. Free memory was 323.7MB in the beginning and 322.0MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 412.68ms. Allocated memory is still 371.2MB. Free memory was 322.0MB in the beginning and 304.4MB in the end (delta: 17.6MB). Peak memory consumption was 16.8MB. Max. memory is 16.0GB. * TraceAbstraction took 661620.87ms. Allocated memory was 371.2MB in the beginning and 16.0GB in the end (delta: 15.6GB). Free memory was 303.6MB in the beginning and 11.3GB in the end (delta: -11.0GB). Peak memory consumption was 9.1GB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3.0s, 166 PlacesBefore, 51 PlacesAfterwards, 191 TransitionsBefore, 62 TransitionsAfterwards, 5280 CoEnabledTransitionPairs, 6 FixpointIterations, 39 TrivialSequentialCompositions, 67 ConcurrentSequentialCompositions, 1 TrivialYvCompositions, 26 ConcurrentYvCompositions, 14 ChoiceCompositions, 147 TotalNumberOfCompositions, 12402 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 12374, independent: 12370, independent conditional: 0, independent unconditional: 12370, dependent: 4, dependent conditional: 0, dependent unconditional: 4, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 2838, independent: 2836, independent conditional: 0, independent unconditional: 2836, dependent: 2, dependent conditional: 0, dependent unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 12374, independent: 9534, independent conditional: 0, independent unconditional: 9534, dependent: 2, dependent conditional: 0, dependent unconditional: 2, unknown: 2838, unknown conditional: 0, unknown unconditional: 2838] , Statistics on independence cache: Total cache size (in pairs): 254, Positive cache size: 254, Positive conditional cache size: 0, Positive unconditional cache size: 254, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 4.6s, 194 PlacesBefore, 79 PlacesAfterwards, 235 TransitionsBefore, 102 TransitionsAfterwards, 13440 CoEnabledTransitionPairs, 7 FixpointIterations, 39 TrivialSequentialCompositions, 63 ConcurrentSequentialCompositions, 1 TrivialYvCompositions, 34 ConcurrentYvCompositions, 18 ChoiceCompositions, 155 TotalNumberOfCompositions, 65126 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 43490, independent: 43150, independent conditional: 0, independent unconditional: 43150, dependent: 340, dependent conditional: 0, dependent unconditional: 340, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 7448, independent: 7414, independent conditional: 0, independent unconditional: 7414, dependent: 34, dependent conditional: 0, dependent unconditional: 34, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 43490, independent: 35736, independent conditional: 0, independent unconditional: 35736, dependent: 306, dependent conditional: 0, dependent unconditional: 306, unknown: 7448, unknown conditional: 0, unknown unconditional: 7448] , Statistics on independence cache: Total cache size (in pairs): 1455, Positive cache size: 1439, Positive conditional cache size: 0, Positive unconditional cache size: 1439, Negative cache size: 16, Negative conditional cache size: 0, Negative unconditional cache size: 16, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 4.5s, 194 PlacesBefore, 79 PlacesAfterwards, 235 TransitionsBefore, 102 TransitionsAfterwards, 13440 CoEnabledTransitionPairs, 7 FixpointIterations, 39 TrivialSequentialCompositions, 63 ConcurrentSequentialCompositions, 1 TrivialYvCompositions, 34 ConcurrentYvCompositions, 18 ChoiceCompositions, 155 TotalNumberOfCompositions, 65246 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 41674, independent: 41334, independent conditional: 0, independent unconditional: 41334, dependent: 340, dependent conditional: 0, dependent unconditional: 340, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 7480, independent: 7441, independent conditional: 0, independent unconditional: 7441, dependent: 39, dependent conditional: 0, dependent unconditional: 39, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 41674, independent: 33893, independent conditional: 0, independent unconditional: 33893, dependent: 301, dependent conditional: 0, dependent unconditional: 301, unknown: 7480, unknown conditional: 0, unknown unconditional: 7480] , Statistics on independence cache: Total cache size (in pairs): 1388, Positive cache size: 1372, Positive conditional cache size: 0, Positive unconditional cache size: 1372, Negative cache size: 16, Negative conditional cache size: 0, Negative unconditional cache size: 16, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - TimeoutResultAtElement [Line: 92]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while executing RemoveRedundantFlow. - StatisticsResult: Ultimate Automizer benchmark data for thread instance sufficiency with 1 thread instances CFG has 9 procedures, 178 locations, 5 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 3.4s, OverallIterations: 1, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.3s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=192occurred 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 for thread instance sufficiency with 2 thread instances CFG has 13 procedures, 198 locations, 5 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 330.9s, OverallIterations: 10, TraceHistogramMax: 3, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 321.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 6.6s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 580 SdHoareTripleChecker+Valid, 1.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 503 mSDsluCounter, 11 SdHoareTripleChecker+Invalid, 0.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 36 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1756 IncrementalHoareTripleChecker+Invalid, 1792 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 36 mSolverCounterUnsat, 11 mSDtfsCounter, 1756 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 276 GetRequests, 242 SyntacticMatches, 6 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=353occurred in iteration=1, InterpolantAutomatonStates: 41, 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: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 409 NumberOfCodeBlocks, 409 NumberOfCodeBlocksAsserted, 17 NumberOfCheckSat, 464 ConstructedInterpolants, 0 QuantifiedInterpolants, 704 SizeOfPredicates, 0 NumberOfNonLiveVariables, 1142 ConjunctsInSsa, 25 ConjunctsInUnsatCore, 20 InterpolantComputations, 7 PerfectInterpolantSequences, 284/313 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 1 thread instances CFG has 13 procedures, 198 locations, 5 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 327.2s, OverallIterations: 8, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 318.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 6.3s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 205 SdHoareTripleChecker+Valid, 1.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 124 mSDsluCounter, 18 SdHoareTripleChecker+Invalid, 0.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 20 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1276 IncrementalHoareTripleChecker+Invalid, 1296 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 20 mSolverCounterUnsat, 18 mSDtfsCounter, 1276 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 197 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=418occurred in iteration=7, InterpolantAutomatonStates: 21, 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: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 371 NumberOfCodeBlocks, 371 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 356 ConstructedInterpolants, 0 QuantifiedInterpolants, 448 SizeOfPredicates, 0 NumberOfNonLiveVariables, 1121 ConjunctsInSsa, 14 ConjunctsInUnsatCore, 15 InterpolantComputations, 8 PerfectInterpolantSequences, 49/56 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown