/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 PROGRAM_FIRST -tc /storage/repos/CAV22/benchmarks/AutomizerCInline.xml -i /storage/repos/CAV22/benchmarks/increased_bounds/pthread-wmm_mix010.opt_bound2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-19404b3-m [2023-08-04 05:36:36,661 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-04 05:36:36,727 INFO L114 SettingsManager]: Loading settings from /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-04 05:36:36,732 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-04 05:36:36,732 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-08-04 05:36:36,733 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Translation Mode: [2023-08-04 05:36:36,733 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-04 05:36:36,758 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-04 05:36:36,759 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-04 05:36:36,761 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-04 05:36:36,762 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-04 05:36:36,762 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-04 05:36:36,763 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-04 05:36:36,764 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-04 05:36:36,764 INFO L153 SettingsManager]: * Use SBE=true [2023-08-04 05:36:36,764 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-04 05:36:36,764 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-04 05:36:36,764 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-04 05:36:36,764 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-04 05:36:36,765 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-04 05:36:36,765 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-04 05:36:36,765 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-04 05:36:36,765 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-04 05:36:36,765 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-04 05:36:36,766 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-04 05:36:36,766 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-04 05:36:36,767 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-04 05:36:36,767 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-04 05:36:36,767 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-04 05:36:36,767 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-04 05:36:36,768 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-04 05:36:36,768 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-04 05:36:36,768 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-04 05:36:36,768 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-04 05:36:36,769 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-04 05:36:36,769 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-04 05:36:36,769 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-04 05:36:36,769 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-04 05:36:36,769 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-04 05:36:36,769 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-04 05:36:36,769 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-04 05:36:36,769 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> PROGRAM_FIRST [2023-08-04 05:36:36,964 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-04 05:36:36,979 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-04 05:36:36,980 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-04 05:36:36,981 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-04 05:36:36,982 INFO L274 PluginConnector]: CDTParser initialized [2023-08-04 05:36:36,983 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/CAV22/benchmarks/increased_bounds/pthread-wmm_mix010.opt_bound2.i [2023-08-04 05:36:37,924 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-04 05:36:38,099 INFO L384 CDTParser]: Found 1 translation units. [2023-08-04 05:36:38,099 INFO L180 CDTParser]: Scanning /storage/repos/CAV22/benchmarks/increased_bounds/pthread-wmm_mix010.opt_bound2.i [2023-08-04 05:36:38,115 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fd0c1905f/898a1d05fbcb40c8ab22a1bcf5c6cadf/FLAG114a5ee87 [2023-08-04 05:36:38,123 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fd0c1905f/898a1d05fbcb40c8ab22a1bcf5c6cadf [2023-08-04 05:36:38,126 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-04 05:36:38,127 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-04 05:36:38,129 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-04 05:36:38,129 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-04 05:36:38,131 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-04 05:36:38,132 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.08 05:36:38" (1/1) ... [2023-08-04 05:36:38,132 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b083dbf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 05:36:38, skipping insertion in model container [2023-08-04 05:36:38,132 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.08 05:36:38" (1/1) ... [2023-08-04 05:36:38,172 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-04 05:36:38,309 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/CAV22/benchmarks/increased_bounds/pthread-wmm_mix010.opt_bound2.i[944,957] [2023-08-04 05:36:38,498 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-04 05:36:38,508 INFO L201 MainTranslator]: Completed pre-run [2023-08-04 05:36:38,517 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/CAV22/benchmarks/increased_bounds/pthread-wmm_mix010.opt_bound2.i[944,957] [2023-08-04 05:36:38,537 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [267] [2023-08-04 05:36:38,538 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [267] [2023-08-04 05:36:38,558 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-04 05:36:38,612 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-04 05:36:38,612 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-04 05:36:38,617 INFO L206 MainTranslator]: Completed translation [2023-08-04 05:36:38,617 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 05:36:38 WrapperNode [2023-08-04 05:36:38,617 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-04 05:36:38,618 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-04 05:36:38,618 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-04 05:36:38,618 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-04 05:36:38,623 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 05:36:38" (1/1) ... [2023-08-04 05:36:38,637 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 05:36:38" (1/1) ... [2023-08-04 05:36:38,655 INFO L138 Inliner]: procedures = 176, calls = 60, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 176 [2023-08-04 05:36:38,655 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-04 05:36:38,656 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-04 05:36:38,656 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-04 05:36:38,656 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-04 05:36:38,667 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 05:36:38" (1/1) ... [2023-08-04 05:36:38,668 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 05:36:38" (1/1) ... [2023-08-04 05:36:38,671 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 05:36:38" (1/1) ... [2023-08-04 05:36:38,671 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 05:36:38" (1/1) ... [2023-08-04 05:36:38,687 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 05:36:38" (1/1) ... [2023-08-04 05:36:38,689 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 05:36:38" (1/1) ... [2023-08-04 05:36:38,691 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 05:36:38" (1/1) ... [2023-08-04 05:36:38,693 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 05:36:38" (1/1) ... [2023-08-04 05:36:38,696 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-04 05:36:38,696 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-04 05:36:38,696 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-04 05:36:38,696 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-04 05:36:38,697 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 05:36:38" (1/1) ... [2023-08-04 05:36:38,709 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-04 05:36:38,719 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 05:36:38,742 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 05:36:38,751 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 05:36:38,775 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-04 05:36:38,776 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-04 05:36:38,776 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-04 05:36:38,776 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-04 05:36:38,776 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-04 05:36:38,777 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-08-04 05:36:38,777 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-08-04 05:36:38,778 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-08-04 05:36:38,778 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-08-04 05:36:38,778 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-08-04 05:36:38,778 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-08-04 05:36:38,778 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-04 05:36:38,778 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-04 05:36:38,778 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-04 05:36:38,778 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-04 05:36:38,780 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 05:36:38,910 INFO L236 CfgBuilder]: Building ICFG [2023-08-04 05:36:38,911 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-04 05:36:39,218 INFO L277 CfgBuilder]: Performing block encoding [2023-08-04 05:36:39,312 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-04 05:36:39,313 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2023-08-04 05:36:39,315 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.08 05:36:39 BoogieIcfgContainer [2023-08-04 05:36:39,315 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-04 05:36:39,317 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-04 05:36:39,317 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-04 05:36:39,319 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-04 05:36:39,320 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.08 05:36:38" (1/3) ... [2023-08-04 05:36:39,321 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52db2dfa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.08 05:36:39, skipping insertion in model container [2023-08-04 05:36:39,321 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 05:36:38" (2/3) ... [2023-08-04 05:36:39,322 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52db2dfa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.08 05:36:39, skipping insertion in model container [2023-08-04 05:36:39,322 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.08 05:36:39" (3/3) ... [2023-08-04 05:36:39,323 INFO L112 eAbstractionObserver]: Analyzing ICFG pthread-wmm_mix010.opt_bound2.i [2023-08-04 05:36:39,328 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-04 05:36:39,334 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-04 05:36:39,334 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-08-04 05:36:39,334 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-04 05:36:39,378 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-04 05:36:39,408 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 136 places, 134 transitions, 283 flow [2023-08-04 05:36:39,510 INFO L124 PetriNetUnfolderBase]: 30/460 cut-off events. [2023-08-04 05:36:39,510 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 05:36:39,515 INFO L83 FinitePrefix]: Finished finitePrefix Result has 485 conditions, 460 events. 30/460 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 2024 event pairs, 0 based on Foata normal form. 0/404 useless extension candidates. Maximal degree in co-relation 273. Up to 16 conditions per place. [2023-08-04 05:36:39,515 INFO L82 GeneralOperation]: Start removeDead. Operand has 136 places, 134 transitions, 283 flow [2023-08-04 05:36:39,521 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 134 places, 132 transitions, 275 flow [2023-08-04 05:36:39,523 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-04 05:36:39,533 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 134 places, 132 transitions, 275 flow [2023-08-04 05:36:39,535 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 134 places, 132 transitions, 275 flow [2023-08-04 05:36:39,535 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 134 places, 132 transitions, 275 flow [2023-08-04 05:36:39,597 INFO L124 PetriNetUnfolderBase]: 30/457 cut-off events. [2023-08-04 05:36:39,598 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 05:36:39,600 INFO L83 FinitePrefix]: Finished finitePrefix Result has 479 conditions, 457 events. 30/457 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 1998 event pairs, 0 based on Foata normal form. 0/401 useless extension candidates. Maximal degree in co-relation 267. Up to 16 conditions per place. [2023-08-04 05:36:39,604 INFO L119 LiptonReduction]: Number of co-enabled transitions 2702 [2023-08-04 05:36:42,814 INFO L134 LiptonReduction]: Checked pairs total: 6777 [2023-08-04 05:36:42,814 INFO L136 LiptonReduction]: Total number of compositions: 115 [2023-08-04 05:36:42,823 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-04 05:36:42,827 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;@36400738, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-04 05:36:42,828 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-08-04 05:36:42,831 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-04 05:36:42,831 INFO L124 PetriNetUnfolderBase]: 1/20 cut-off events. [2023-08-04 05:36:42,831 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 05:36:42,832 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 05:36:42,832 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-04 05:36:42,832 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P2Err0ASSERT_VIOLATIONERROR_FUNCTION, P2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 05:36:42,835 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 05:36:42,835 INFO L85 PathProgramCache]: Analyzing trace with hash 425172172, now seen corresponding path program 1 times [2023-08-04 05:36:42,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 05:36:42,841 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [215835722] [2023-08-04 05:36:42,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 05:36:42,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 05:36:42,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 05:36:43,036 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 05:36:43,037 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 05:36:43,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [215835722] [2023-08-04 05:36:43,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [215835722] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 05:36:43,038 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 05:36:43,038 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-04 05:36:43,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048654936] [2023-08-04 05:36:43,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 05:36:43,045 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 05:36:43,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 05:36:43,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 05:36:43,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-04 05:36:43,080 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 249 [2023-08-04 05:36:43,084 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 33 transitions, 77 flow. Second operand has 3 states, 3 states have (on average 117.0) internal successors, (351), 3 states have internal predecessors, (351), 0 states have call successors, (0), 0 states 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 05:36:43,084 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 05:36:43,084 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 249 [2023-08-04 05:36:43,085 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 05:36:43,450 INFO L124 PetriNetUnfolderBase]: 1828/2911 cut-off events. [2023-08-04 05:36:43,450 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-08-04 05:36:43,455 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5777 conditions, 2911 events. 1828/2911 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 158. Compared 16035 event pairs, 1501 based on Foata normal form. 105/2521 useless extension candidates. Maximal degree in co-relation 5764. Up to 2807 conditions per place. [2023-08-04 05:36:43,463 INFO L140 encePairwiseOnDemand]: 245/249 looper letters, 28 selfloop transitions, 2 changer transitions 1/35 dead transitions. [2023-08-04 05:36:43,463 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 35 transitions, 143 flow [2023-08-04 05:36:43,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 05:36:43,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 05:36:43,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 378 transitions. [2023-08-04 05:36:43,477 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5060240963855421 [2023-08-04 05:36:43,478 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 378 transitions. [2023-08-04 05:36:43,478 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 378 transitions. [2023-08-04 05:36:43,480 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 05:36:43,481 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 378 transitions. [2023-08-04 05:36:43,485 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 126.0) internal successors, (378), 3 states have internal predecessors, (378), 0 states have call successors, (0), 0 states 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 05:36:43,489 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 249.0) internal successors, (996), 4 states have internal predecessors, (996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 05:36:43,490 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 249.0) internal successors, (996), 4 states have internal predecessors, (996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 05:36:43,491 INFO L175 Difference]: Start difference. First operand has 39 places, 33 transitions, 77 flow. Second operand 3 states and 378 transitions. [2023-08-04 05:36:43,491 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 35 transitions, 143 flow [2023-08-04 05:36:43,493 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 35 transitions, 143 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-04 05:36:43,494 INFO L231 Difference]: Finished difference. Result has 42 places, 32 transitions, 83 flow [2023-08-04 05:36:43,495 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=249, PETRI_DIFFERENCE_MINUEND_FLOW=75, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=83, PETRI_PLACES=42, PETRI_TRANSITIONS=32} [2023-08-04 05:36:43,498 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 3 predicate places. [2023-08-04 05:36:43,498 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 32 transitions, 83 flow [2023-08-04 05:36:43,498 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 117.0) internal successors, (351), 3 states have internal predecessors, (351), 0 states have call successors, (0), 0 states 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 05:36:43,498 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 05:36:43,498 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 05:36:43,499 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-04 05:36:43,499 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting P2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P2Err0ASSERT_VIOLATIONERROR_FUNCTION, P2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 05:36:43,500 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 05:36:43,500 INFO L85 PathProgramCache]: Analyzing trace with hash 1061778166, now seen corresponding path program 1 times [2023-08-04 05:36:43,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 05:36:43,501 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [7627588] [2023-08-04 05:36:43,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 05:36:43,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 05:36:43,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 05:36:43,614 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 05:36:43,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 05:36:43,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [7627588] [2023-08-04 05:36:43,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [7627588] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 05:36:43,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1455066491] [2023-08-04 05:36:43,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 05:36:43,615 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 05:36:43,616 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 05:36:43,619 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 05:36:43,626 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 05:36:43,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 05:36:43,698 INFO L262 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-04 05:36:43,701 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 05:36:43,724 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 05:36:43,725 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-04 05:36:43,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1455066491] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 05:36:43,725 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-04 05:36:43,725 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-08-04 05:36:43,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1984439010] [2023-08-04 05:36:43,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 05:36:43,726 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 05:36:43,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 05:36:43,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 05:36:43,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-04 05:36:43,752 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 249 [2023-08-04 05:36:43,753 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 32 transitions, 83 flow. Second operand has 3 states, 3 states have (on average 118.0) internal successors, (354), 3 states have internal predecessors, (354), 0 states have call successors, (0), 0 states 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 05:36:43,753 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 05:36:43,753 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 249 [2023-08-04 05:36:43,754 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 05:36:44,005 INFO L124 PetriNetUnfolderBase]: 1584/2481 cut-off events. [2023-08-04 05:36:44,005 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2023-08-04 05:36:44,009 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4923 conditions, 2481 events. 1584/2481 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 146. Compared 12938 event pairs, 1374 based on Foata normal form. 0/2084 useless extension candidates. Maximal degree in co-relation 4907. Up to 2352 conditions per place. [2023-08-04 05:36:44,017 INFO L140 encePairwiseOnDemand]: 246/249 looper letters, 31 selfloop transitions, 2 changer transitions 1/38 dead transitions. [2023-08-04 05:36:44,017 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 38 transitions, 163 flow [2023-08-04 05:36:44,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 05:36:44,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 05:36:44,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 380 transitions. [2023-08-04 05:36:44,019 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5087014725568942 [2023-08-04 05:36:44,019 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 380 transitions. [2023-08-04 05:36:44,019 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 380 transitions. [2023-08-04 05:36:44,019 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 05:36:44,020 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 380 transitions. [2023-08-04 05:36:44,020 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 126.66666666666667) internal successors, (380), 3 states have internal predecessors, (380), 0 states have call successors, (0), 0 states 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 05:36:44,022 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 249.0) internal successors, (996), 4 states have internal predecessors, (996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 05:36:44,022 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 249.0) internal successors, (996), 4 states have internal predecessors, (996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 05:36:44,022 INFO L175 Difference]: Start difference. First operand has 42 places, 32 transitions, 83 flow. Second operand 3 states and 380 transitions. [2023-08-04 05:36:44,022 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 38 transitions, 163 flow [2023-08-04 05:36:44,023 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 38 transitions, 159 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-04 05:36:44,023 INFO L231 Difference]: Finished difference. Result has 43 places, 32 transitions, 87 flow [2023-08-04 05:36:44,023 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=249, PETRI_DIFFERENCE_MINUEND_FLOW=79, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=87, PETRI_PLACES=43, PETRI_TRANSITIONS=32} [2023-08-04 05:36:44,024 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 4 predicate places. [2023-08-04 05:36:44,024 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 32 transitions, 87 flow [2023-08-04 05:36:44,024 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 118.0) internal successors, (354), 3 states have internal predecessors, (354), 0 states have call successors, (0), 0 states 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 05:36:44,024 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 05:36:44,025 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 05:36:44,032 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-08-04 05:36:44,229 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 05:36:44,229 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting P2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P2Err0ASSERT_VIOLATIONERROR_FUNCTION, P2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 05:36:44,230 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 05:36:44,230 INFO L85 PathProgramCache]: Analyzing trace with hash -1193070176, now seen corresponding path program 1 times [2023-08-04 05:36:44,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 05:36:44,231 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1412633781] [2023-08-04 05:36:44,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 05:36:44,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 05:36:44,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 05:36:44,307 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 05:36:44,307 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 05:36:44,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1412633781] [2023-08-04 05:36:44,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1412633781] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 05:36:44,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1389006576] [2023-08-04 05:36:44,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 05:36:44,308 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 05:36:44,309 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 05:36:44,323 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 05:36:44,325 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 05:36:44,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 05:36:44,396 INFO L262 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-04 05:36:44,397 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 05:36:44,417 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 05:36:44,417 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-04 05:36:44,431 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 05:36:44,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1389006576] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-04 05:36:44,431 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-04 05:36:44,431 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 4 [2023-08-04 05:36:44,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234831226] [2023-08-04 05:36:44,432 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-04 05:36:44,432 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-04 05:36:44,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 05:36:44,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-04 05:36:44,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-04 05:36:44,446 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 249 [2023-08-04 05:36:44,447 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 32 transitions, 87 flow. Second operand has 5 states, 5 states have (on average 117.2) internal successors, (586), 5 states have internal predecessors, (586), 0 states have call successors, (0), 0 states 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 05:36:44,447 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 05:36:44,447 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 249 [2023-08-04 05:36:44,447 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 05:36:44,459 INFO L124 PetriNetUnfolderBase]: 4/16 cut-off events. [2023-08-04 05:36:44,459 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-08-04 05:36:44,459 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44 conditions, 16 events. 4/16 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 20 event pairs, 0 based on Foata normal form. 3/19 useless extension candidates. Maximal degree in co-relation 36. Up to 10 conditions per place. [2023-08-04 05:36:44,459 INFO L140 encePairwiseOnDemand]: 246/249 looper letters, 0 selfloop transitions, 0 changer transitions 10/10 dead transitions. [2023-08-04 05:36:44,459 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 18 places, 10 transitions, 43 flow [2023-08-04 05:36:44,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-04 05:36:44,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-04 05:36:44,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 466 transitions. [2023-08-04 05:36:44,461 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4678714859437751 [2023-08-04 05:36:44,461 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 466 transitions. [2023-08-04 05:36:44,461 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 466 transitions. [2023-08-04 05:36:44,461 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 05:36:44,461 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 466 transitions. [2023-08-04 05:36:44,462 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 116.5) internal successors, (466), 4 states have internal predecessors, (466), 0 states have call successors, (0), 0 states 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 05:36:44,463 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 249.0) internal successors, (1245), 5 states have internal predecessors, (1245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 05:36:44,463 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 249.0) internal successors, (1245), 5 states have internal predecessors, (1245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 05:36:44,464 INFO L175 Difference]: Start difference. First operand has 43 places, 32 transitions, 87 flow. Second operand 4 states and 466 transitions. [2023-08-04 05:36:44,464 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 18 places, 10 transitions, 43 flow [2023-08-04 05:36:44,464 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 17 places, 10 transitions, 41 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-04 05:36:44,464 INFO L231 Difference]: Finished difference. Result has 17 places, 0 transitions, 0 flow [2023-08-04 05:36:44,464 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=249, PETRI_DIFFERENCE_MINUEND_FLOW=17, PETRI_DIFFERENCE_MINUEND_PLACES=14, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=7, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=7, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=17, PETRI_TRANSITIONS=0} [2023-08-04 05:36:44,464 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, -22 predicate places. [2023-08-04 05:36:44,465 INFO L495 AbstractCegarLoop]: Abstraction has has 17 places, 0 transitions, 0 flow [2023-08-04 05:36:44,465 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 117.2) internal successors, (586), 5 states have internal predecessors, (586), 0 states have call successors, (0), 0 states 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 05:36:44,467 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2023-08-04 05:36:44,467 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P2Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 3 remaining) [2023-08-04 05:36:44,467 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P2Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 3 remaining) [2023-08-04 05:36:44,482 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 05:36:44,672 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,SelfDestructingSolverStorable2 [2023-08-04 05:36:44,673 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2023-08-04 05:36:44,674 INFO L307 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was SAFE,SAFE,SAFE (1/2) [2023-08-04 05:36:44,678 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 136 places, 134 transitions, 283 flow [2023-08-04 05:36:44,700 INFO L124 PetriNetUnfolderBase]: 30/460 cut-off events. [2023-08-04 05:36:44,700 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 05:36:44,701 INFO L83 FinitePrefix]: Finished finitePrefix Result has 485 conditions, 460 events. 30/460 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 2024 event pairs, 0 based on Foata normal form. 0/404 useless extension candidates. Maximal degree in co-relation 273. Up to 16 conditions per place. [2023-08-04 05:36:44,701 INFO L82 GeneralOperation]: Start removeDead. Operand has 136 places, 134 transitions, 283 flow [2023-08-04 05:36:44,701 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 110 places, 105 transitions, 225 flow [2023-08-04 05:36:44,701 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-04 05:36:44,701 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 110 places, 105 transitions, 225 flow [2023-08-04 05:36:44,702 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 110 places, 105 transitions, 225 flow [2023-08-04 05:36:44,702 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 110 places, 105 transitions, 225 flow [2023-08-04 05:36:44,712 INFO L124 PetriNetUnfolderBase]: 6/228 cut-off events. [2023-08-04 05:36:44,712 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 05:36:44,713 INFO L83 FinitePrefix]: Finished finitePrefix Result has 253 conditions, 228 events. 6/228 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 671 event pairs, 0 based on Foata normal form. 0/212 useless extension candidates. Maximal degree in co-relation 157. Up to 8 conditions per place. [2023-08-04 05:36:44,714 INFO L119 LiptonReduction]: Number of co-enabled transitions 1408 [2023-08-04 05:36:47,501 INFO L134 LiptonReduction]: Checked pairs total: 3090 [2023-08-04 05:36:47,502 INFO L136 LiptonReduction]: Total number of compositions: 85 [2023-08-04 05:36:47,503 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-04 05:36:47,503 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;@36400738, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-04 05:36:47,503 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-08-04 05:36:47,505 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-04 05:36:47,505 INFO L124 PetriNetUnfolderBase]: 0/19 cut-off events. [2023-08-04 05:36:47,506 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 05:36:47,506 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 05:36:47,506 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-04 05:36:47,506 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-04 05:36:47,506 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 05:36:47,506 INFO L85 PathProgramCache]: Analyzing trace with hash -1355772234, now seen corresponding path program 1 times [2023-08-04 05:36:47,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 05:36:47,506 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [87996960] [2023-08-04 05:36:47,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 05:36:47,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 05:36:47,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-04 05:36:47,525 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-04 05:36:47,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-04 05:36:47,557 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-04 05:36:47,557 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-04 05:36:47,557 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 3 remaining) [2023-08-04 05:36:47,572 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2023-08-04 05:36:47,573 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2023-08-04 05:36:47,573 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-04 05:36:47,573 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-04 05:36:47,574 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE,UNKNOWN,UNKNOWN (2/2) [2023-08-04 05:36:47,574 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-04 05:36:47,574 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-04 05:36:47,610 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-04 05:36:47,625 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 168 places, 160 transitions, 356 flow [2023-08-04 05:36:47,714 INFO L124 PetriNetUnfolderBase]: 93/1419 cut-off events. [2023-08-04 05:36:47,714 INFO L125 PetriNetUnfolderBase]: For 26/26 co-relation queries the response was YES. [2023-08-04 05:36:47,718 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1517 conditions, 1419 events. 93/1419 cut-off events. For 26/26 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 9870 event pairs, 0 based on Foata normal form. 0/1242 useless extension candidates. Maximal degree in co-relation 1024. Up to 54 conditions per place. [2023-08-04 05:36:47,718 INFO L82 GeneralOperation]: Start removeDead. Operand has 168 places, 160 transitions, 356 flow [2023-08-04 05:36:47,721 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 166 places, 158 transitions, 344 flow [2023-08-04 05:36:47,722 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-04 05:36:47,722 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 166 places, 158 transitions, 344 flow [2023-08-04 05:36:47,722 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 166 places, 158 transitions, 344 flow [2023-08-04 05:36:47,722 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 166 places, 158 transitions, 344 flow [2023-08-04 05:36:47,808 INFO L124 PetriNetUnfolderBase]: 93/1415 cut-off events. [2023-08-04 05:36:47,809 INFO L125 PetriNetUnfolderBase]: For 22/22 co-relation queries the response was YES. [2023-08-04 05:36:47,814 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1505 conditions, 1415 events. 93/1415 cut-off events. For 22/22 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 9866 event pairs, 0 based on Foata normal form. 0/1238 useless extension candidates. Maximal degree in co-relation 1012. Up to 54 conditions per place. [2023-08-04 05:36:47,831 INFO L119 LiptonReduction]: Number of co-enabled transitions 6588 [2023-08-04 05:36:50,727 INFO L134 LiptonReduction]: Checked pairs total: 21751 [2023-08-04 05:36:50,727 INFO L136 LiptonReduction]: Total number of compositions: 119 [2023-08-04 05:36:50,728 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-04 05:36:50,729 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;@36400738, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-04 05:36:50,729 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-08-04 05:36:50,732 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-04 05:36:50,732 INFO L124 PetriNetUnfolderBase]: 1/21 cut-off events. [2023-08-04 05:36:50,733 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 05:36:50,733 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 05:36:50,733 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-04 05:36:50,733 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P2Err0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P2Err0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-08-04 05:36:50,733 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 05:36:50,733 INFO L85 PathProgramCache]: Analyzing trace with hash -917479943, now seen corresponding path program 1 times [2023-08-04 05:36:50,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 05:36:50,734 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [692972523] [2023-08-04 05:36:50,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 05:36:50,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 05:36:50,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 05:36:50,782 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 05:36:50,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 05:36:50,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [692972523] [2023-08-04 05:36:50,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [692972523] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 05:36:50,782 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 05:36:50,783 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-04 05:36:50,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1644971277] [2023-08-04 05:36:50,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 05:36:50,783 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 05:36:50,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 05:36:50,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 05:36:50,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-04 05:36:50,793 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 279 [2023-08-04 05:36:50,794 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 54 transitions, 136 flow. Second operand has 3 states, 3 states have (on average 135.0) internal successors, (405), 3 states have internal predecessors, (405), 0 states have call successors, (0), 0 states 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 05:36:50,794 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 05:36:50,794 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 279 [2023-08-04 05:36:50,794 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 05:37:31,346 INFO L124 PetriNetUnfolderBase]: 378842/495087 cut-off events. [2023-08-04 05:37:31,346 INFO L125 PetriNetUnfolderBase]: For 5733/5733 co-relation queries the response was YES. [2023-08-04 05:37:32,831 INFO L83 FinitePrefix]: Finished finitePrefix Result has 979250 conditions, 495087 events. 378842/495087 cut-off events. For 5733/5733 co-relation queries the response was YES. Maximal size of possible extension queue 14895. Compared 3548573 event pairs, 313476 based on Foata normal form. 10836/441645 useless extension candidates. Maximal degree in co-relation 282833. Up to 476892 conditions per place. [2023-08-04 05:37:34,577 INFO L140 encePairwiseOnDemand]: 275/279 looper letters, 43 selfloop transitions, 2 changer transitions 0/57 dead transitions. [2023-08-04 05:37:34,577 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 57 transitions, 232 flow [2023-08-04 05:37:34,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 05:37:34,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 05:37:34,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 446 transitions. [2023-08-04 05:37:34,580 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5328554360812425 [2023-08-04 05:37:34,580 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 446 transitions. [2023-08-04 05:37:34,580 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 446 transitions. [2023-08-04 05:37:34,580 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 05:37:34,581 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 446 transitions. [2023-08-04 05:37:34,581 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 148.66666666666666) internal successors, (446), 3 states have internal predecessors, (446), 0 states have call successors, (0), 0 states 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 05:37:34,583 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 279.0) internal successors, (1116), 4 states have internal predecessors, (1116), 0 states have call successors, (0), 0 states 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 05:37:34,583 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 279.0) internal successors, (1116), 4 states have internal predecessors, (1116), 0 states have call successors, (0), 0 states 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 05:37:34,583 INFO L175 Difference]: Start difference. First operand has 66 places, 54 transitions, 136 flow. Second operand 3 states and 446 transitions. [2023-08-04 05:37:34,583 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 57 transitions, 232 flow [2023-08-04 05:37:34,594 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 57 transitions, 230 flow, removed 1 selfloop flow, removed 0 redundant places. [2023-08-04 05:37:34,595 INFO L231 Difference]: Finished difference. Result has 69 places, 54 transitions, 144 flow [2023-08-04 05:37:34,595 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=279, PETRI_DIFFERENCE_MINUEND_FLOW=132, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=144, PETRI_PLACES=69, PETRI_TRANSITIONS=54} [2023-08-04 05:37:34,596 INFO L281 CegarLoopForPetriNet]: 66 programPoint places, 3 predicate places. [2023-08-04 05:37:34,596 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 54 transitions, 144 flow [2023-08-04 05:37:34,596 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 135.0) internal successors, (405), 3 states have internal predecessors, (405), 0 states have call successors, (0), 0 states 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 05:37:34,596 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 05:37:34,596 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 05:37:34,596 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-04 05:37:34,596 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting P2Err0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P2Err0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-08-04 05:37:34,597 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 05:37:34,597 INFO L85 PathProgramCache]: Analyzing trace with hash 2023339419, now seen corresponding path program 1 times [2023-08-04 05:37:34,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 05:37:34,597 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [990231383] [2023-08-04 05:37:34,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 05:37:34,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 05:37:34,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 05:37:34,639 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 05:37:34,639 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 05:37:34,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [990231383] [2023-08-04 05:37:34,639 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [990231383] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 05:37:34,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [838841461] [2023-08-04 05:37:34,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 05:37:34,640 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 05:37:34,640 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 05:37:34,654 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 05:37:34,656 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 05:37:34,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 05:37:34,726 INFO L262 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-04 05:37:34,726 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 05:37:34,731 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 05:37:34,731 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-04 05:37:34,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [838841461] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 05:37:34,731 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-04 05:37:34,731 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-08-04 05:37:34,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733986836] [2023-08-04 05:37:34,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 05:37:34,731 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 05:37:34,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 05:37:34,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 05:37:34,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-04 05:37:34,747 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 279 [2023-08-04 05:37:34,748 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 54 transitions, 144 flow. Second operand has 3 states, 3 states have (on average 136.0) internal successors, (408), 3 states have internal predecessors, (408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 05:37:34,748 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 05:37:34,748 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 279 [2023-08-04 05:37:34,748 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 05:38:12,538 INFO L124 PetriNetUnfolderBase]: 366838/477940 cut-off events. [2023-08-04 05:38:12,538 INFO L125 PetriNetUnfolderBase]: For 4155/4155 co-relation queries the response was YES. [2023-08-04 05:38:14,087 INFO L83 FinitePrefix]: Finished finitePrefix Result has 944417 conditions, 477940 events. 366838/477940 cut-off events. For 4155/4155 co-relation queries the response was YES. Maximal size of possible extension queue 14833. Compared 3421811 event pairs, 296770 based on Foata normal form. 0/417640 useless extension candidates. Maximal degree in co-relation 944380. Up to 460105 conditions per place. [2023-08-04 05:38:15,656 INFO L140 encePairwiseOnDemand]: 276/279 looper letters, 49 selfloop transitions, 2 changer transitions 0/63 dead transitions. [2023-08-04 05:38:15,657 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 63 transitions, 264 flow [2023-08-04 05:38:15,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 05:38:15,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 05:38:15,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 450 transitions. [2023-08-04 05:38:15,658 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5376344086021505 [2023-08-04 05:38:15,658 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 450 transitions. [2023-08-04 05:38:15,658 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 450 transitions. [2023-08-04 05:38:15,658 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 05:38:15,659 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 450 transitions. [2023-08-04 05:38:15,659 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 150.0) internal successors, (450), 3 states have internal predecessors, (450), 0 states have call successors, (0), 0 states 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 05:38:15,660 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 279.0) internal successors, (1116), 4 states have internal predecessors, (1116), 0 states have call successors, (0), 0 states 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 05:38:15,661 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 279.0) internal successors, (1116), 4 states have internal predecessors, (1116), 0 states have call successors, (0), 0 states 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 05:38:15,661 INFO L175 Difference]: Start difference. First operand has 69 places, 54 transitions, 144 flow. Second operand 3 states and 450 transitions. [2023-08-04 05:38:15,661 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 63 transitions, 264 flow [2023-08-04 05:38:15,662 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 63 transitions, 262 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-04 05:38:15,662 INFO L231 Difference]: Finished difference. Result has 71 places, 55 transitions, 154 flow [2023-08-04 05:38:15,663 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=279, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=154, PETRI_PLACES=71, PETRI_TRANSITIONS=55} [2023-08-04 05:38:15,663 INFO L281 CegarLoopForPetriNet]: 66 programPoint places, 5 predicate places. [2023-08-04 05:38:15,663 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 55 transitions, 154 flow [2023-08-04 05:38:15,663 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 136.0) internal successors, (408), 3 states have internal predecessors, (408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 05:38:15,664 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 05:38:15,664 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 05:38:15,669 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 05:38:15,868 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 05:38:15,868 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting P2Err0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P2Err0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-08-04 05:38:15,869 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 05:38:15,869 INFO L85 PathProgramCache]: Analyzing trace with hash -148928296, now seen corresponding path program 1 times [2023-08-04 05:38:15,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 05:38:15,869 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1635702544] [2023-08-04 05:38:15,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 05:38:15,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 05:38:15,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 05:38:15,897 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 05:38:15,898 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 05:38:15,898 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1635702544] [2023-08-04 05:38:15,898 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1635702544] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 05:38:15,898 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1808091177] [2023-08-04 05:38:15,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 05:38:15,898 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 05:38:15,898 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 05:38:15,899 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 05:38:15,903 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 05:38:15,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 05:38:15,976 INFO L262 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-04 05:38:15,978 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 05:38:15,997 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 05:38:15,998 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-04 05:38:16,013 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 05:38:16,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1808091177] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-04 05:38:16,014 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-04 05:38:16,014 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 4 [2023-08-04 05:38:16,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345993904] [2023-08-04 05:38:16,014 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-04 05:38:16,014 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-04 05:38:16,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 05:38:16,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-04 05:38:16,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-04 05:38:16,025 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 279 [2023-08-04 05:38:16,026 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 55 transitions, 154 flow. Second operand has 5 states, 5 states have (on average 135.2) internal successors, (676), 5 states have internal predecessors, (676), 0 states have call successors, (0), 0 states 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 05:38:16,026 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 05:38:16,026 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 279 [2023-08-04 05:38:16,026 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 05:38:44,190 INFO L124 PetriNetUnfolderBase]: 286810/370037 cut-off events. [2023-08-04 05:38:44,190 INFO L125 PetriNetUnfolderBase]: For 3519/3519 co-relation queries the response was YES. [2023-08-04 05:38:45,494 INFO L83 FinitePrefix]: Finished finitePrefix Result has 731998 conditions, 370037 events. 286810/370037 cut-off events. For 3519/3519 co-relation queries the response was YES. Maximal size of possible extension queue 11819. Compared 2514756 event pairs, 193398 based on Foata normal form. 3/324941 useless extension candidates. Maximal degree in co-relation 259549. Up to 356836 conditions per place. [2023-08-04 05:38:46,559 INFO L140 encePairwiseOnDemand]: 275/279 looper letters, 47 selfloop transitions, 3 changer transitions 1/63 dead transitions. [2023-08-04 05:38:46,559 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 63 transitions, 272 flow [2023-08-04 05:38:46,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-04 05:38:46,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-04 05:38:46,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 579 transitions. [2023-08-04 05:38:46,561 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5188172043010753 [2023-08-04 05:38:46,561 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 579 transitions. [2023-08-04 05:38:46,561 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 579 transitions. [2023-08-04 05:38:46,561 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 05:38:46,561 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 579 transitions. [2023-08-04 05:38:46,562 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 144.75) internal successors, (579), 4 states have internal predecessors, (579), 0 states have call successors, (0), 0 states 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 05:38:46,564 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 279.0) internal successors, (1395), 5 states have internal predecessors, (1395), 0 states have call successors, (0), 0 states 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 05:38:46,564 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 279.0) internal successors, (1395), 5 states have internal predecessors, (1395), 0 states have call successors, (0), 0 states 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 05:38:46,564 INFO L175 Difference]: Start difference. First operand has 71 places, 55 transitions, 154 flow. Second operand 4 states and 579 transitions. [2023-08-04 05:38:46,564 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 63 transitions, 272 flow [2023-08-04 05:38:46,565 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 63 transitions, 270 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-04 05:38:46,566 INFO L231 Difference]: Finished difference. Result has 75 places, 55 transitions, 166 flow [2023-08-04 05:38:46,566 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=279, PETRI_DIFFERENCE_MINUEND_FLOW=152, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=166, PETRI_PLACES=75, PETRI_TRANSITIONS=55} [2023-08-04 05:38:46,566 INFO L281 CegarLoopForPetriNet]: 66 programPoint places, 9 predicate places. [2023-08-04 05:38:46,567 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 55 transitions, 166 flow [2023-08-04 05:38:46,567 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 135.2) internal successors, (676), 5 states have internal predecessors, (676), 0 states have call successors, (0), 0 states 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 05:38:46,567 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 05:38:46,567 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 05:38:46,575 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 05:38:46,771 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 05:38:46,771 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting P2Err0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P2Err0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-08-04 05:38:46,771 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 05:38:46,771 INFO L85 PathProgramCache]: Analyzing trace with hash 1780597721, now seen corresponding path program 1 times [2023-08-04 05:38:46,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 05:38:46,772 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1247347371] [2023-08-04 05:38:46,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 05:38:46,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 05:38:46,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 05:38:46,819 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 05:38:46,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 05:38:46,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1247347371] [2023-08-04 05:38:46,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1247347371] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 05:38:46,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [156140195] [2023-08-04 05:38:46,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 05:38:46,819 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 05:38:46,819 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 05:38:46,820 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 05:38:46,822 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 05:38:46,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 05:38:46,898 INFO L262 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-04 05:38:46,899 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 05:38:46,910 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 05:38:46,911 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-04 05:38:46,925 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 05:38:46,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [156140195] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-04 05:38:46,926 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-04 05:38:46,926 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 5 [2023-08-04 05:38:46,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819170387] [2023-08-04 05:38:46,926 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-04 05:38:46,927 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-04 05:38:46,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 05:38:46,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-04 05:38:46,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-04 05:38:46,937 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 279 [2023-08-04 05:38:46,939 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 55 transitions, 166 flow. Second operand has 5 states, 5 states have (on average 135.4) internal successors, (677), 5 states have internal predecessors, (677), 0 states have call successors, (0), 0 states 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 05:38:46,939 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 05:38:46,939 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 279 [2023-08-04 05:38:46,939 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 05:39:10,566 INFO L124 PetriNetUnfolderBase]: 238048/304762 cut-off events. [2023-08-04 05:39:10,566 INFO L125 PetriNetUnfolderBase]: For 2673/2673 co-relation queries the response was YES. [2023-08-04 05:39:11,763 INFO L83 FinitePrefix]: Finished finitePrefix Result has 603121 conditions, 304762 events. 238048/304762 cut-off events. For 2673/2673 co-relation queries the response was YES. Maximal size of possible extension queue 10706. Compared 2028246 event pairs, 153796 based on Foata normal form. 36/268771 useless extension candidates. Maximal degree in co-relation 213496. Up to 292876 conditions per place. [2023-08-04 05:39:12,853 INFO L140 encePairwiseOnDemand]: 275/279 looper letters, 58 selfloop transitions, 3 changer transitions 1/74 dead transitions. [2023-08-04 05:39:12,854 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 74 transitions, 328 flow [2023-08-04 05:39:12,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-04 05:39:12,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-04 05:39:12,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 590 transitions. [2023-08-04 05:39:12,855 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5286738351254481 [2023-08-04 05:39:12,855 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 590 transitions. [2023-08-04 05:39:12,855 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 590 transitions. [2023-08-04 05:39:12,856 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 05:39:12,856 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 590 transitions. [2023-08-04 05:39:12,857 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 147.5) internal successors, (590), 4 states have internal predecessors, (590), 0 states have call successors, (0), 0 states 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 05:39:12,858 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 279.0) internal successors, (1395), 5 states have internal predecessors, (1395), 0 states have call successors, (0), 0 states 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 05:39:12,858 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 279.0) internal successors, (1395), 5 states have internal predecessors, (1395), 0 states have call successors, (0), 0 states 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 05:39:12,859 INFO L175 Difference]: Start difference. First operand has 75 places, 55 transitions, 166 flow. Second operand 4 states and 590 transitions. [2023-08-04 05:39:12,859 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 74 transitions, 328 flow [2023-08-04 05:39:12,860 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 74 transitions, 321 flow, removed 1 selfloop flow, removed 3 redundant places. [2023-08-04 05:39:12,861 INFO L231 Difference]: Finished difference. Result has 77 places, 55 transitions, 173 flow [2023-08-04 05:39:12,861 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=279, PETRI_DIFFERENCE_MINUEND_FLOW=159, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=173, PETRI_PLACES=77, PETRI_TRANSITIONS=55} [2023-08-04 05:39:12,862 INFO L281 CegarLoopForPetriNet]: 66 programPoint places, 11 predicate places. [2023-08-04 05:39:12,862 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 55 transitions, 173 flow [2023-08-04 05:39:12,862 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 135.4) internal successors, (677), 5 states have internal predecessors, (677), 0 states have call successors, (0), 0 states 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 05:39:12,862 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 05:39:12,862 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 05:39:12,869 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 05:39:13,067 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 05:39:13,067 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting P2Err0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P2Err0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-08-04 05:39:13,067 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 05:39:13,067 INFO L85 PathProgramCache]: Analyzing trace with hash -499088553, now seen corresponding path program 1 times [2023-08-04 05:39:13,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 05:39:13,068 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1946631575] [2023-08-04 05:39:13,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 05:39:13,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 05:39:13,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 05:39:13,196 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-08-04 05:39:13,196 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 05:39:13,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1946631575] [2023-08-04 05:39:13,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1946631575] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 05:39:13,196 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 05:39:13,196 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-04 05:39:13,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118316295] [2023-08-04 05:39:13,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 05:39:13,197 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 05:39:13,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 05:39:13,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 05:39:13,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-04 05:39:13,199 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 136 out of 279 [2023-08-04 05:39:13,200 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 55 transitions, 173 flow. Second operand has 3 states, 3 states have (on average 140.66666666666666) internal successors, (422), 3 states have internal predecessors, (422), 0 states have call successors, (0), 0 states 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 05:39:13,200 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 05:39:13,200 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 136 of 279 [2023-08-04 05:39:13,200 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 05:39:33,797 INFO L124 PetriNetUnfolderBase]: 214312/276130 cut-off events. [2023-08-04 05:39:33,797 INFO L125 PetriNetUnfolderBase]: For 3637/3637 co-relation queries the response was YES. [2023-08-04 05:39:34,807 INFO L83 FinitePrefix]: Finished finitePrefix Result has 544929 conditions, 276130 events. 214312/276130 cut-off events. For 3637/3637 co-relation queries the response was YES. Maximal size of possible extension queue 9945. Compared 1827613 event pairs, 34888 based on Foata normal form. 0/248806 useless extension candidates. Maximal degree in co-relation 192915. Up to 249409 conditions per place. [2023-08-04 05:39:35,617 INFO L140 encePairwiseOnDemand]: 274/279 looper letters, 61 selfloop transitions, 3 changer transitions 0/76 dead transitions. [2023-08-04 05:39:35,617 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 76 transitions, 348 flow [2023-08-04 05:39:35,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 05:39:35,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 05:39:35,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 472 transitions. [2023-08-04 05:39:35,618 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5639187574671446 [2023-08-04 05:39:35,618 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 472 transitions. [2023-08-04 05:39:35,619 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 472 transitions. [2023-08-04 05:39:35,619 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 05:39:35,619 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 472 transitions. [2023-08-04 05:39:35,620 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 157.33333333333334) internal successors, (472), 3 states have internal predecessors, (472), 0 states have call successors, (0), 0 states 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 05:39:35,620 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 279.0) internal successors, (1116), 4 states have internal predecessors, (1116), 0 states have call successors, (0), 0 states 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 05:39:35,621 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 279.0) internal successors, (1116), 4 states have internal predecessors, (1116), 0 states have call successors, (0), 0 states 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 05:39:35,621 INFO L175 Difference]: Start difference. First operand has 77 places, 55 transitions, 173 flow. Second operand 3 states and 472 transitions. [2023-08-04 05:39:35,621 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 76 transitions, 348 flow [2023-08-04 05:39:35,623 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 76 transitions, 341 flow, removed 1 selfloop flow, removed 3 redundant places. [2023-08-04 05:39:35,624 INFO L231 Difference]: Finished difference. Result has 77 places, 57 transitions, 187 flow [2023-08-04 05:39:35,624 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=279, PETRI_DIFFERENCE_MINUEND_FLOW=166, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=187, PETRI_PLACES=77, PETRI_TRANSITIONS=57} [2023-08-04 05:39:35,624 INFO L281 CegarLoopForPetriNet]: 66 programPoint places, 11 predicate places. [2023-08-04 05:39:35,624 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 57 transitions, 187 flow [2023-08-04 05:39:35,624 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 140.66666666666666) internal successors, (422), 3 states have internal predecessors, (422), 0 states have call successors, (0), 0 states 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 05:39:35,624 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 05:39:35,625 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 05:39:35,625 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-04 05:39:35,625 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P2Err0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-08-04 05:39:35,625 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 05:39:35,625 INFO L85 PathProgramCache]: Analyzing trace with hash 1708851466, now seen corresponding path program 1 times [2023-08-04 05:39:35,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 05:39:35,625 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [539936255] [2023-08-04 05:39:35,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 05:39:35,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 05:39:35,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 05:39:35,664 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-08-04 05:39:35,664 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 05:39:35,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [539936255] [2023-08-04 05:39:35,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [539936255] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 05:39:35,664 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 05:39:35,664 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-04 05:39:35,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165974268] [2023-08-04 05:39:35,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 05:39:35,665 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 05:39:35,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 05:39:35,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 05:39:35,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-04 05:39:35,672 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 279 [2023-08-04 05:39:35,673 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 57 transitions, 187 flow. Second operand has 3 states, 3 states have (on average 138.0) internal successors, (414), 3 states have internal predecessors, (414), 0 states have call successors, (0), 0 states 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 05:39:35,673 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 05:39:35,673 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 279 [2023-08-04 05:39:35,673 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 05:39:58,105 INFO L124 PetriNetUnfolderBase]: 211864/268822 cut-off events. [2023-08-04 05:39:58,105 INFO L125 PetriNetUnfolderBase]: For 14272/14272 co-relation queries the response was YES. [2023-08-04 05:39:59,096 INFO L83 FinitePrefix]: Finished finitePrefix Result has 563101 conditions, 268822 events. 211864/268822 cut-off events. For 14272/14272 co-relation queries the response was YES. Maximal size of possible extension queue 9709. Compared 1709686 event pairs, 174592 based on Foata normal form. 0/239401 useless extension candidates. Maximal degree in co-relation 198780. Up to 257980 conditions per place. [2023-08-04 05:39:59,879 INFO L140 encePairwiseOnDemand]: 275/279 looper letters, 59 selfloop transitions, 2 changer transitions 0/73 dead transitions. [2023-08-04 05:39:59,880 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 73 transitions, 344 flow [2023-08-04 05:39:59,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 05:39:59,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 05:39:59,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 458 transitions. [2023-08-04 05:39:59,881 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5471923536439666 [2023-08-04 05:39:59,881 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 458 transitions. [2023-08-04 05:39:59,881 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 458 transitions. [2023-08-04 05:39:59,881 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 05:39:59,881 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 458 transitions. [2023-08-04 05:39:59,882 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 152.66666666666666) internal successors, (458), 3 states have internal predecessors, (458), 0 states have call successors, (0), 0 states 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 05:39:59,883 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 279.0) internal successors, (1116), 4 states have internal predecessors, (1116), 0 states have call successors, (0), 0 states 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 05:39:59,883 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 279.0) internal successors, (1116), 4 states have internal predecessors, (1116), 0 states have call successors, (0), 0 states 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 05:39:59,883 INFO L175 Difference]: Start difference. First operand has 77 places, 57 transitions, 187 flow. Second operand 3 states and 458 transitions. [2023-08-04 05:39:59,883 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 73 transitions, 344 flow [2023-08-04 05:39:59,885 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 73 transitions, 340 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-04 05:39:59,886 INFO L231 Difference]: Finished difference. Result has 79 places, 58 transitions, 198 flow [2023-08-04 05:39:59,886 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=279, PETRI_DIFFERENCE_MINUEND_FLOW=184, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=198, PETRI_PLACES=79, PETRI_TRANSITIONS=58} [2023-08-04 05:39:59,886 INFO L281 CegarLoopForPetriNet]: 66 programPoint places, 13 predicate places. [2023-08-04 05:39:59,887 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 58 transitions, 198 flow [2023-08-04 05:39:59,887 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 138.0) internal successors, (414), 3 states have internal predecessors, (414), 0 states have call successors, (0), 0 states 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 05:39:59,887 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 05:39:59,887 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 05:39:59,887 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-04 05:39:59,887 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting P2Err0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P2Err0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-08-04 05:39:59,887 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 05:39:59,887 INFO L85 PathProgramCache]: Analyzing trace with hash -840775111, now seen corresponding path program 1 times [2023-08-04 05:39:59,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 05:39:59,888 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1516193753] [2023-08-04 05:39:59,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 05:39:59,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 05:39:59,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-04 05:39:59,914 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-04 05:39:59,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-04 05:39:59,944 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-04 05:39:59,944 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-04 05:39:59,944 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location P2Err0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2023-08-04 05:39:59,944 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P2Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 4 remaining) [2023-08-04 05:39:59,944 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 4 remaining) [2023-08-04 05:39:59,944 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P2Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 4 remaining) [2023-08-04 05:39:59,944 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-04 05:39:59,945 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2023-08-04 05:39:59,945 INFO L307 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was UNSAFE,UNKNOWN,UNKNOWN,UNKNOWN (1/2) [2023-08-04 05:39:59,946 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 2 thread instances [2023-08-04 05:39:59,946 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-04 05:40:00,024 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.08 05:40:00 BasicIcfg [2023-08-04 05:40:00,024 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-04 05:40:00,025 INFO L158 Benchmark]: Toolchain (without parser) took 201897.53ms. Allocated memory was 375.4MB in the beginning and 16.0GB in the end (delta: 15.6GB). Free memory was 310.3MB in the beginning and 13.1GB in the end (delta: -12.8GB). Peak memory consumption was 2.8GB. Max. memory is 16.0GB. [2023-08-04 05:40:00,025 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 375.4MB. Free memory is still 324.5MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-04 05:40:00,025 INFO L158 Benchmark]: CACSL2BoogieTranslator took 488.24ms. Allocated memory was 375.4MB in the beginning and 669.0MB in the end (delta: 293.6MB). Free memory was 310.3MB in the beginning and 628.3MB in the end (delta: -317.9MB). Peak memory consumption was 27.4MB. Max. memory is 16.0GB. [2023-08-04 05:40:00,025 INFO L158 Benchmark]: Boogie Procedure Inliner took 37.60ms. Allocated memory is still 669.0MB. Free memory was 628.3MB in the beginning and 626.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-04 05:40:00,025 INFO L158 Benchmark]: Boogie Preprocessor took 39.80ms. Allocated memory is still 669.0MB. Free memory was 626.2MB in the beginning and 624.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-04 05:40:00,026 INFO L158 Benchmark]: RCFGBuilder took 618.91ms. Allocated memory is still 669.0MB. Free memory was 623.0MB in the beginning and 583.2MB in the end (delta: 39.9MB). Peak memory consumption was 39.8MB. Max. memory is 16.0GB. [2023-08-04 05:40:00,026 INFO L158 Benchmark]: TraceAbstraction took 200707.49ms. Allocated memory was 669.0MB in the beginning and 16.0GB in the end (delta: 15.3GB). Free memory was 583.2MB in the beginning and 13.1GB in the end (delta: -12.5GB). Peak memory consumption was 2.8GB. Max. memory is 16.0GB. [2023-08-04 05:40:00,027 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 375.4MB. Free memory is still 324.5MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 488.24ms. Allocated memory was 375.4MB in the beginning and 669.0MB in the end (delta: 293.6MB). Free memory was 310.3MB in the beginning and 628.3MB in the end (delta: -317.9MB). Peak memory consumption was 27.4MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 37.60ms. Allocated memory is still 669.0MB. Free memory was 628.3MB in the beginning and 626.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 39.80ms. Allocated memory is still 669.0MB. Free memory was 626.2MB in the beginning and 624.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 618.91ms. Allocated memory is still 669.0MB. Free memory was 623.0MB in the beginning and 583.2MB in the end (delta: 39.9MB). Peak memory consumption was 39.8MB. Max. memory is 16.0GB. * TraceAbstraction took 200707.49ms. Allocated memory was 669.0MB in the beginning and 16.0GB in the end (delta: 15.3GB). Free memory was 583.2MB in the beginning and 13.1GB in the end (delta: -12.5GB). Peak memory consumption was 2.8GB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResultAtLocation [Line: 267]: Unsoundness Warning unspecified type, defaulting to int C: short [267] - GenericResultAtLocation [Line: 267]: Unsoundness Warning unspecified type, defaulting to int C: short [267] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3.3s, 134 PlacesBefore, 39 PlacesAfterwards, 132 TransitionsBefore, 33 TransitionsAfterwards, 2702 CoEnabledTransitionPairs, 7 FixpointIterations, 40 TrivialSequentialCompositions, 55 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 16 ConcurrentYvCompositions, 4 ChoiceCompositions, 115 TotalNumberOfCompositions, 6777 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 3886, independent: 3697, independent conditional: 0, independent unconditional: 3697, dependent: 189, dependent conditional: 0, dependent unconditional: 189, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1459, independent: 1432, independent conditional: 0, independent unconditional: 1432, dependent: 27, dependent conditional: 0, dependent unconditional: 27, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 3886, independent: 2265, independent conditional: 0, independent unconditional: 2265, dependent: 162, dependent conditional: 0, dependent unconditional: 162, unknown: 1459, unknown conditional: 0, unknown unconditional: 1459] , Statistics on independence cache: Total cache size (in pairs): 155, Positive cache size: 141, Positive conditional cache size: 0, Positive unconditional cache size: 141, Negative cache size: 14, Negative conditional cache size: 0, Negative unconditional cache size: 14, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.8s, 110 PlacesBefore, 33 PlacesAfterwards, 105 TransitionsBefore, 26 TransitionsAfterwards, 1408 CoEnabledTransitionPairs, 7 FixpointIterations, 40 TrivialSequentialCompositions, 34 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 9 ConcurrentYvCompositions, 2 ChoiceCompositions, 85 TotalNumberOfCompositions, 3090 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1897, independent: 1775, independent conditional: 0, independent unconditional: 1775, dependent: 122, dependent conditional: 0, dependent unconditional: 122, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 740, independent: 722, independent conditional: 0, independent unconditional: 722, dependent: 18, dependent conditional: 0, dependent unconditional: 18, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1897, independent: 1053, independent conditional: 0, independent unconditional: 1053, dependent: 104, dependent conditional: 0, dependent unconditional: 104, unknown: 740, unknown conditional: 0, unknown unconditional: 740] , Statistics on independence cache: Total cache size (in pairs): 80, Positive cache size: 73, Positive conditional cache size: 0, Positive unconditional cache size: 73, Negative cache size: 7, Negative conditional cache size: 0, Negative unconditional cache size: 7, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3.0s, 166 PlacesBefore, 66 PlacesAfterwards, 158 TransitionsBefore, 54 TransitionsAfterwards, 6588 CoEnabledTransitionPairs, 7 FixpointIterations, 40 TrivialSequentialCompositions, 58 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 17 ConcurrentYvCompositions, 4 ChoiceCompositions, 119 TotalNumberOfCompositions, 21751 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 7179, independent: 6812, independent conditional: 0, independent unconditional: 6812, dependent: 367, dependent conditional: 0, dependent unconditional: 367, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 3094, independent: 3039, independent conditional: 0, independent unconditional: 3039, dependent: 55, dependent conditional: 0, dependent unconditional: 55, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 7179, independent: 3773, independent conditional: 0, independent unconditional: 3773, dependent: 312, dependent conditional: 0, dependent unconditional: 312, unknown: 3094, unknown conditional: 0, unknown unconditional: 3094] , Statistics on independence cache: Total cache size (in pairs): 315, Positive cache size: 289, Positive conditional cache size: 0, Positive unconditional cache size: 289, Negative cache size: 26, Negative conditional cache size: 0, Negative unconditional cache size: 26, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - CounterExampleResult [Line: 18]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L709] 0 int __unbuffered_cnt = 0; [L711] 0 int __unbuffered_p0_EAX = 0; [L713] 0 int __unbuffered_p1_EAX = 0; [L715] 0 int __unbuffered_p1_EBX = 0; [L717] 0 int __unbuffered_p2_EAX = 0; [L719] 0 int __unbuffered_p2_EBX = 0; [L721] 0 int a = 0; [L722] 0 _Bool main$tmp_guard0; [L723] 0 _Bool main$tmp_guard1; [L725] 0 int x = 0; [L727] 0 int y = 0; [L729] 0 int z = 0; [L730] 0 _Bool z$flush_delayed; [L731] 0 int z$mem_tmp; [L732] 0 _Bool z$r_buff0_thd0; [L733] 0 _Bool z$r_buff0_thd1; [L734] 0 _Bool z$r_buff0_thd2; [L735] 0 _Bool z$r_buff0_thd3; [L736] 0 _Bool z$r_buff1_thd0; [L737] 0 _Bool z$r_buff1_thd1; [L738] 0 _Bool z$r_buff1_thd2; [L739] 0 _Bool z$r_buff1_thd3; [L740] 0 _Bool z$read_delayed; [L741] 0 int *z$read_delayed_var; [L742] 0 int z$w_buff0; [L743] 0 _Bool z$w_buff0_used; [L744] 0 int z$w_buff1; [L745] 0 _Bool z$w_buff1_used; [L746] 0 _Bool weak$$choice0; [L747] 0 _Bool weak$$choice2; [L853] 0 pthread_t t260[2]; [L854] 0 int asdf=0; VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=0, __unbuffered_p1_EBX=0, __unbuffered_p2_EAX=0, __unbuffered_p2_EBX=0, a=0, asdf=0, main$tmp_guard0=0, main$tmp_guard1=0, t260={5:0}, weak$$choice0=0, weak$$choice2=0, x=0, y=0, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=0, z$w_buff0_used=0, z$w_buff1=0, z$w_buff1_used=0, z=0] [L854] COND TRUE 0 asdf<2 [L854] FCALL, FORK 0 pthread_create(&t260[asdf], ((void *)0), P0, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=0, __unbuffered_p1_EBX=0, __unbuffered_p2_EAX=0, __unbuffered_p2_EBX=0, a=0, arg={0:0}, asdf=0, main$tmp_guard0=0, main$tmp_guard1=0, pthread_create(&t260[asdf], ((void *)0), P0, ((void *)0))=-6, t260={5:0}, weak$$choice0=0, weak$$choice2=0, x=0, y=0, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=0, z$w_buff0_used=0, z$w_buff1=0, z$w_buff1_used=0, z=0] [L854] 0 asdf++ VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=0, __unbuffered_p1_EBX=0, __unbuffered_p2_EAX=0, __unbuffered_p2_EBX=0, a=0, arg={0:0}, asdf=1, main$tmp_guard0=0, main$tmp_guard1=0, t260={5:0}, weak$$choice0=0, weak$$choice2=0, x=0, y=0, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=0, z$w_buff0_used=0, z$w_buff1=0, z$w_buff1_used=0, z=0] [L854] COND TRUE 0 asdf<2 [L854] FCALL, FORK 0 pthread_create(&t260[asdf], ((void *)0), P0, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=0, __unbuffered_p1_EBX=0, __unbuffered_p2_EAX=0, __unbuffered_p2_EBX=0, a=0, arg={0:0}, asdf=1, main$tmp_guard0=0, main$tmp_guard1=0, pthread_create(&t260[asdf], ((void *)0), P0, ((void *)0))=-5, t260={5:0}, weak$$choice0=0, weak$$choice2=0, x=0, y=0, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=0, z$w_buff0_used=0, z$w_buff1=0, z$w_buff1_used=0, z=0] [L854] 0 asdf++ VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=0, __unbuffered_p1_EBX=0, __unbuffered_p2_EAX=0, __unbuffered_p2_EBX=0, a=0, arg={0:0}, asdf=2, main$tmp_guard0=0, main$tmp_guard1=0, t260={5:0}, weak$$choice0=0, weak$$choice2=0, x=0, y=0, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=0, z$w_buff0_used=0, z$w_buff1=0, z$w_buff1_used=0, z=0] [L854] COND FALSE 0 !(asdf<2) [L855] 0 pthread_t t261[2]; [L856] 0 int asdf=0; VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=0, __unbuffered_p1_EBX=0, __unbuffered_p2_EAX=0, __unbuffered_p2_EBX=0, a=0, arg={0:0}, asdf=0, asdf=2, main$tmp_guard0=0, main$tmp_guard1=0, t260={5:0}, t261={6:0}, weak$$choice0=0, weak$$choice2=0, x=0, y=0, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=0, z$w_buff0_used=0, z$w_buff1=0, z$w_buff1_used=0, z=0] [L856] COND TRUE 0 asdf<2 [L856] FCALL, FORK 0 pthread_create(&t261[asdf], ((void *)0), P1, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=0, __unbuffered_p1_EBX=0, __unbuffered_p2_EAX=0, __unbuffered_p2_EBX=0, a=0, arg={0:0}, arg={0:0}, asdf=0, asdf=2, main$tmp_guard0=0, main$tmp_guard1=0, pthread_create(&t261[asdf], ((void *)0), P1, ((void *)0))=-4, t260={5:0}, t261={6:0}, weak$$choice0=0, weak$$choice2=0, x=0, y=0, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=0, z$w_buff0_used=0, z$w_buff1=0, z$w_buff1_used=0, z=0] [L856] 0 asdf++ VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=0, __unbuffered_p1_EBX=0, __unbuffered_p2_EAX=0, __unbuffered_p2_EBX=0, a=0, arg={0:0}, arg={0:0}, asdf=1, asdf=2, main$tmp_guard0=0, main$tmp_guard1=0, t260={5:0}, t261={6:0}, weak$$choice0=0, weak$$choice2=0, x=0, y=0, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=0, z$w_buff0_used=0, z$w_buff1=0, z$w_buff1_used=0, z=0] [L856] COND TRUE 0 asdf<2 [L856] FCALL, FORK 0 pthread_create(&t261[asdf], ((void *)0), P1, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=0, __unbuffered_p1_EBX=0, __unbuffered_p2_EAX=0, __unbuffered_p2_EBX=0, a=0, arg={0:0}, arg={0:0}, asdf=1, asdf=2, main$tmp_guard0=0, main$tmp_guard1=0, pthread_create(&t261[asdf], ((void *)0), P1, ((void *)0))=-3, t260={5:0}, t261={6:0}, weak$$choice0=0, weak$$choice2=0, x=0, y=0, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=0, z$w_buff0_used=0, z$w_buff1=0, z$w_buff1_used=0, z=0] [L856] 0 asdf++ VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=0, __unbuffered_p1_EBX=0, __unbuffered_p2_EAX=0, __unbuffered_p2_EBX=0, a=0, arg={0:0}, arg={0:0}, asdf=2, asdf=2, main$tmp_guard0=0, main$tmp_guard1=0, t260={5:0}, t261={6:0}, weak$$choice0=0, weak$$choice2=0, x=0, y=0, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=0, z$w_buff0_used=0, z$w_buff1=0, z$w_buff1_used=0, z=0] [L856] COND FALSE 0 !(asdf<2) [L857] 0 pthread_t t262[2]; [L858] 0 int asdf=0; VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=0, __unbuffered_p1_EBX=0, __unbuffered_p2_EAX=0, __unbuffered_p2_EBX=0, a=0, arg={0:0}, arg={0:0}, asdf=0, asdf=2, asdf=2, main$tmp_guard0=0, main$tmp_guard1=0, t260={5:0}, t261={6:0}, t262={3:0}, weak$$choice0=0, weak$$choice2=0, x=0, y=0, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=0, z$w_buff0_used=0, z$w_buff1=0, z$w_buff1_used=0, z=0] [L858] COND TRUE 0 asdf<2 [L858] FCALL, FORK 0 pthread_create(&t262[asdf], ((void *)0), P2, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=0, __unbuffered_p1_EBX=0, __unbuffered_p2_EAX=0, __unbuffered_p2_EBX=0, a=0, arg={0:0}, arg={0:0}, asdf=0, asdf=2, asdf=2, main$tmp_guard0=0, main$tmp_guard1=0, pthread_create(&t262[asdf], ((void *)0), P2, ((void *)0))=-2, t260={5:0}, t261={6:0}, t262={3:0}, weak$$choice0=0, weak$$choice2=0, x=0, y=0, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=0, z$w_buff0_used=0, z$w_buff1=0, z$w_buff1_used=0, z=0] [L800] 5 z$w_buff1 = z$w_buff0 [L801] 5 z$w_buff0 = 1 [L802] 5 z$w_buff1_used = z$w_buff0_used [L803] 5 z$w_buff0_used = (_Bool)1 [L804] CALL 5 __VERIFIER_assert(!(z$w_buff1_used && z$w_buff0_used)) [L18] COND FALSE 5 !(!expression) [L804] RET 5 __VERIFIER_assert(!(z$w_buff1_used && z$w_buff0_used)) [L805] 5 z$r_buff1_thd0 = z$r_buff0_thd0 [L806] 5 z$r_buff1_thd1 = z$r_buff0_thd1 [L807] 5 z$r_buff1_thd2 = z$r_buff0_thd2 [L808] 5 z$r_buff1_thd3 = z$r_buff0_thd3 [L809] 5 z$r_buff0_thd3 = (_Bool)1 VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=0, __unbuffered_p1_EBX=0, __unbuffered_p2_EAX=0, __unbuffered_p2_EBX=0, a=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, y=0, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=1, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=1, z$w_buff0_used=1, z$w_buff1=0, z$w_buff1_used=0, z=0] [L858] 0 asdf++ VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=0, __unbuffered_p1_EBX=0, __unbuffered_p2_EAX=0, __unbuffered_p2_EBX=0, a=0, arg={0:0}, arg={0:0}, asdf=1, asdf=2, asdf=2, main$tmp_guard0=0, main$tmp_guard1=0, t260={5:0}, t261={6:0}, t262={3:0}, weak$$choice0=0, weak$$choice2=0, x=0, y=0, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=1, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=1, z$w_buff0_used=1, z$w_buff1=0, z$w_buff1_used=0, z=0] [L858] COND TRUE 0 asdf<2 [L858] FCALL, FORK 0 pthread_create(&t262[asdf], ((void *)0), P2, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=0, __unbuffered_p1_EBX=0, __unbuffered_p2_EAX=0, __unbuffered_p2_EBX=0, a=0, arg={0:0}, arg={0:0}, asdf=1, asdf=2, asdf=2, main$tmp_guard0=0, main$tmp_guard1=0, pthread_create(&t262[asdf], ((void *)0), P2, ((void *)0))=-1, t260={5:0}, t261={6:0}, t262={3:0}, weak$$choice0=0, weak$$choice2=0, x=0, y=0, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=1, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=1, z$w_buff0_used=1, z$w_buff1=0, z$w_buff1_used=0, z=0] [L800] 6 z$w_buff1 = z$w_buff0 [L801] 6 z$w_buff0 = 1 [L802] 6 z$w_buff1_used = z$w_buff0_used [L803] 6 z$w_buff0_used = (_Bool)1 [L804] CALL 6 __VERIFIER_assert(!(z$w_buff1_used && z$w_buff0_used)) [L18] COND TRUE 6 !expression [L18] 6 reach_error() VAL [\old(expression)=0, __unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=0, __unbuffered_p1_EBX=0, __unbuffered_p2_EAX=0, __unbuffered_p2_EBX=0, a=0, arg={0:0}, arg={0:0}, expression=0, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, y=0, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=1, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=1, z$w_buff0_used=1, z$w_buff1=1, z$w_buff1_used=1, z=0] - UnprovableResult [Line: 18]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 156 locations, 6 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: 5.3s, OverallIterations: 3, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.4s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 65 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 33 mSDsluCounter, 15 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 9 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 163 IncrementalHoareTripleChecker+Invalid, 172 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 9 mSolverCounterUnsat, 15 mSDtfsCounter, 163 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 38 GetRequests, 29 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=87occurred in iteration=2, InterpolantAutomatonStates: 10, 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, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 48 NumberOfCodeBlocks, 48 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 54 ConstructedInterpolants, 0 QuantifiedInterpolants, 90 SizeOfPredicates, 0 NumberOfNonLiveVariables, 369 ConjunctsInSsa, 5 ConjunctsInUnsatCore, 6 InterpolantComputations, 2 PerfectInterpolantSequences, 4/8 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - StatisticsResult: Ultimate Automizer benchmark data with 2 thread instances CFG has 10 procedures, 182 locations, 7 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: 192.3s, OverallIterations: 7, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 187.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 165 SdHoareTripleChecker+Valid, 0.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 103 mSDsluCounter, 24 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 24 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 610 IncrementalHoareTripleChecker+Invalid, 634 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 24 mSolverCounterUnsat, 24 mSDtfsCounter, 610 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 85 GetRequests, 69 SyntacticMatches, 4 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=198occurred in iteration=6, InterpolantAutomatonStates: 20, 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, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 162 NumberOfCodeBlocks, 162 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 156 ConstructedInterpolants, 0 QuantifiedInterpolants, 274 SizeOfPredicates, 0 NumberOfNonLiveVariables, 585 ConjunctsInSsa, 8 ConjunctsInUnsatCore, 11 InterpolantComputations, 4 PerfectInterpolantSequences, 46/53 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 1 thread instances CFG has 7 procedures, 156 locations, 6 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 2.9s, OverallIterations: 1, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.8s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=67occurred 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 RESULT: Ultimate proved your program to be incorrect! [2023-08-04 05:40:00,056 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...