/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf --traceabstraction.order.of.the.error.locations.to.be.checked TOGETHER -tc /storage/repos/CAV22/benchmarks/AutomizerCInline.xml -i /storage/repos/CAV22/benchmarks/increased_bounds/pthread-wmm_mix038.opt_bound2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-19404b3-m [2023-08-03 17:30:26,672 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-03 17:30:26,719 INFO L114 SettingsManager]: Loading settings from /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-03 17:30:26,724 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-03 17:30:26,724 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-08-03 17:30:26,724 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Translation Mode: [2023-08-03 17:30:26,725 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-03 17:30:26,743 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-03 17:30:26,744 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-03 17:30:26,744 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-03 17:30:26,745 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-03 17:30:26,745 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-03 17:30:26,746 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-03 17:30:26,746 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-03 17:30:26,746 INFO L153 SettingsManager]: * Use SBE=true [2023-08-03 17:30:26,747 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-03 17:30:26,747 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-03 17:30:26,747 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-03 17:30:26,747 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-03 17:30:26,748 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-03 17:30:26,748 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-03 17:30:26,749 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-03 17:30:26,749 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-03 17:30:26,749 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-03 17:30:26,749 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-03 17:30:26,750 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-03 17:30:26,750 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-03 17:30:26,750 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-03 17:30:26,751 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-03 17:30:26,751 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-03 17:30:26,751 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 17:30:26,752 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-03 17:30:26,752 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-03 17:30:26,752 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-03 17:30:26,753 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-03 17:30:26,753 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-03 17:30:26,753 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-03 17:30:26,753 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-03 17:30:26,754 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-03 17:30:26,754 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-03 17:30:26,754 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-03 17:30:26,755 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> TOGETHER [2023-08-03 17:30:26,932 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-03 17:30:26,959 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-03 17:30:26,962 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-03 17:30:26,964 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-03 17:30:26,964 INFO L274 PluginConnector]: CDTParser initialized [2023-08-03 17:30:26,965 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/CAV22/benchmarks/increased_bounds/pthread-wmm_mix038.opt_bound2.i [2023-08-03 17:30:28,179 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-03 17:30:28,426 INFO L384 CDTParser]: Found 1 translation units. [2023-08-03 17:30:28,427 INFO L180 CDTParser]: Scanning /storage/repos/CAV22/benchmarks/increased_bounds/pthread-wmm_mix038.opt_bound2.i [2023-08-03 17:30:28,443 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8e023eaf0/364ee201dac3490ca06487e776b53cd6/FLAG35ea446ee [2023-08-03 17:30:28,456 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8e023eaf0/364ee201dac3490ca06487e776b53cd6 [2023-08-03 17:30:28,458 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-03 17:30:28,459 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-03 17:30:28,460 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-03 17:30:28,460 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-03 17:30:28,463 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-03 17:30:28,463 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 05:30:28" (1/1) ... [2023-08-03 17:30:28,464 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5859928 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:30:28, skipping insertion in model container [2023-08-03 17:30:28,464 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 05:30:28" (1/1) ... [2023-08-03 17:30:28,514 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-03 17:30:28,651 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_mix038.opt_bound2.i[944,957] [2023-08-03 17:30:28,874 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 17:30:28,887 INFO L201 MainTranslator]: Completed pre-run [2023-08-03 17:30:28,899 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_mix038.opt_bound2.i[944,957] [2023-08-03 17:30:28,920 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [267] [2023-08-03 17:30:28,921 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [267] [2023-08-03 17:30:28,957 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 17:30:28,986 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-03 17:30:28,986 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-03 17:30:28,992 INFO L206 MainTranslator]: Completed translation [2023-08-03 17:30:28,994 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:30:28 WrapperNode [2023-08-03 17:30:28,995 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-03 17:30:28,996 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-03 17:30:28,996 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-03 17:30:28,996 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-03 17:30:29,002 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:30:28" (1/1) ... [2023-08-03 17:30:29,031 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:30:28" (1/1) ... [2023-08-03 17:30:29,066 INFO L138 Inliner]: procedures = 176, calls = 58, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 160 [2023-08-03 17:30:29,067 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-03 17:30:29,067 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-03 17:30:29,067 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-03 17:30:29,067 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-03 17:30:29,075 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:30:28" (1/1) ... [2023-08-03 17:30:29,075 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:30:28" (1/1) ... [2023-08-03 17:30:29,092 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:30:28" (1/1) ... [2023-08-03 17:30:29,093 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:30:28" (1/1) ... [2023-08-03 17:30:29,100 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:30:28" (1/1) ... [2023-08-03 17:30:29,103 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:30:28" (1/1) ... [2023-08-03 17:30:29,108 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:30:28" (1/1) ... [2023-08-03 17:30:29,110 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:30:28" (1/1) ... [2023-08-03 17:30:29,112 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-03 17:30:29,113 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-03 17:30:29,113 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-03 17:30:29,113 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-03 17:30:29,114 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:30:28" (1/1) ... [2023-08-03 17:30:29,124 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 17:30:29,144 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 17:30:29,162 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-03 17:30:29,175 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-03 17:30:29,189 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-03 17:30:29,190 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-03 17:30:29,190 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-03 17:30:29,190 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-03 17:30:29,190 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-03 17:30:29,190 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-08-03 17:30:29,190 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-08-03 17:30:29,191 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-08-03 17:30:29,191 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-08-03 17:30:29,191 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-08-03 17:30:29,191 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-08-03 17:30:29,191 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-03 17:30:29,191 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-03 17:30:29,191 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-03 17:30:29,191 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-03 17:30:29,193 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-03 17:30:29,310 INFO L236 CfgBuilder]: Building ICFG [2023-08-03 17:30:29,312 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-03 17:30:29,598 INFO L277 CfgBuilder]: Performing block encoding [2023-08-03 17:30:29,727 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-03 17:30:29,728 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2023-08-03 17:30:29,730 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 05:30:29 BoogieIcfgContainer [2023-08-03 17:30:29,730 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-03 17:30:29,733 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-03 17:30:29,733 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-03 17:30:29,737 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-03 17:30:29,737 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.08 05:30:28" (1/3) ... [2023-08-03 17:30:29,738 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23fba42c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 05:30:29, skipping insertion in model container [2023-08-03 17:30:29,739 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:30:28" (2/3) ... [2023-08-03 17:30:29,739 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23fba42c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 05:30:29, skipping insertion in model container [2023-08-03 17:30:29,739 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 05:30:29" (3/3) ... [2023-08-03 17:30:29,740 INFO L112 eAbstractionObserver]: Analyzing ICFG pthread-wmm_mix038.opt_bound2.i [2023-08-03 17:30:29,747 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-03 17:30:29,755 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-03 17:30:29,756 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-08-03 17:30:29,756 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-03 17:30:29,811 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-03 17:30:29,849 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 133 places, 131 transitions, 277 flow [2023-08-03 17:30:30,005 INFO L124 PetriNetUnfolderBase]: 30/458 cut-off events. [2023-08-03 17:30:30,005 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 17:30:30,013 INFO L83 FinitePrefix]: Finished finitePrefix Result has 483 conditions, 458 events. 30/458 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 2052 event pairs, 0 based on Foata normal form. 0/402 useless extension candidates. Maximal degree in co-relation 267. Up to 16 conditions per place. [2023-08-03 17:30:30,014 INFO L82 GeneralOperation]: Start removeDead. Operand has 133 places, 131 transitions, 277 flow [2023-08-03 17:30:30,019 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 133 places, 131 transitions, 277 flow [2023-08-03 17:30:30,024 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 17:30:30,032 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 133 places, 131 transitions, 277 flow [2023-08-03 17:30:30,034 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 133 places, 131 transitions, 277 flow [2023-08-03 17:30:30,034 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 133 places, 131 transitions, 277 flow [2023-08-03 17:30:30,085 INFO L124 PetriNetUnfolderBase]: 30/458 cut-off events. [2023-08-03 17:30:30,085 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 17:30:30,087 INFO L83 FinitePrefix]: Finished finitePrefix Result has 483 conditions, 458 events. 30/458 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 2052 event pairs, 0 based on Foata normal form. 0/402 useless extension candidates. Maximal degree in co-relation 267. Up to 16 conditions per place. [2023-08-03 17:30:30,092 INFO L119 LiptonReduction]: Number of co-enabled transitions 2568 [2023-08-03 17:30:33,526 INFO L134 LiptonReduction]: Checked pairs total: 6149 [2023-08-03 17:30:33,527 INFO L136 LiptonReduction]: Total number of compositions: 115 [2023-08-03 17:30:33,539 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-03 17:30:33,544 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;@58431b72, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 17:30:33,545 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2023-08-03 17:30:33,549 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 17:30:33,549 INFO L124 PetriNetUnfolderBase]: 1/20 cut-off events. [2023-08-03 17:30:33,549 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 17:30:33,550 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 17:30:33,550 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-03 17:30:33,551 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P2Err0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-08-03 17:30:33,555 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 17:30:33,555 INFO L85 PathProgramCache]: Analyzing trace with hash -790614271, now seen corresponding path program 1 times [2023-08-03 17:30:33,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 17:30:33,563 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1710741871] [2023-08-03 17:30:33,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 17:30:33,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 17:30:33,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 17:30:33,769 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 17:30:33,769 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 17:30:33,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1710741871] [2023-08-03 17:30:33,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1710741871] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 17:30:33,770 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 17:30:33,770 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-03 17:30:33,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143080647] [2023-08-03 17:30:33,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 17:30:33,806 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 17:30:33,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 17:30:33,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 17:30:33,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 17:30:33,847 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 113 out of 246 [2023-08-03 17:30:33,849 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 32 transitions, 79 flow. Second operand has 3 states, 3 states have (on average 115.0) internal successors, (345), 3 states have internal predecessors, (345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 17:30:33,850 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 17:30:33,850 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 113 of 246 [2023-08-03 17:30:33,850 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 17:30:34,102 INFO L124 PetriNetUnfolderBase]: 1189/1917 cut-off events. [2023-08-03 17:30:34,102 INFO L125 PetriNetUnfolderBase]: For 9/9 co-relation queries the response was YES. [2023-08-03 17:30:34,106 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3858 conditions, 1917 events. 1189/1917 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 10125 event pairs, 967 based on Foata normal form. 0/1578 useless extension candidates. Maximal degree in co-relation 3841. Up to 1853 conditions per place. [2023-08-03 17:30:34,116 INFO L140 encePairwiseOnDemand]: 242/246 looper letters, 26 selfloop transitions, 2 changer transitions 0/34 dead transitions. [2023-08-03 17:30:34,116 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 34 transitions, 139 flow [2023-08-03 17:30:34,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 17:30:34,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 17:30:34,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 369 transitions. [2023-08-03 17:30:34,129 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2023-08-03 17:30:34,130 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 369 transitions. [2023-08-03 17:30:34,130 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 369 transitions. [2023-08-03 17:30:34,131 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 17:30:34,133 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 369 transitions. [2023-08-03 17:30:34,138 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 123.0) internal successors, (369), 3 states have internal predecessors, (369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 17:30:34,142 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 246.0) internal successors, (984), 4 states have internal predecessors, (984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 17:30:34,142 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 246.0) internal successors, (984), 4 states have internal predecessors, (984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 17:30:34,144 INFO L175 Difference]: Start difference. First operand has 38 places, 32 transitions, 79 flow. Second operand 3 states and 369 transitions. [2023-08-03 17:30:34,145 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 34 transitions, 139 flow [2023-08-03 17:30:34,147 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 34 transitions, 139 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-03 17:30:34,149 INFO L231 Difference]: Finished difference. Result has 41 places, 31 transitions, 85 flow [2023-08-03 17:30:34,150 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=246, PETRI_DIFFERENCE_MINUEND_FLOW=77, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=85, PETRI_PLACES=41, PETRI_TRANSITIONS=31} [2023-08-03 17:30:34,153 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 3 predicate places. [2023-08-03 17:30:34,153 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 31 transitions, 85 flow [2023-08-03 17:30:34,154 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 115.0) internal successors, (345), 3 states have internal predecessors, (345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 17:30:34,154 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 17:30:34,154 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-03 17:30:34,154 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-03 17:30:34,154 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-08-03 17:30:34,155 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 17:30:34,155 INFO L85 PathProgramCache]: Analyzing trace with hash -795964444, now seen corresponding path program 1 times [2023-08-03 17:30:34,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 17:30:34,155 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1447575886] [2023-08-03 17:30:34,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 17:30:34,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 17:30:34,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 17:30:34,177 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-03 17:30:34,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 17:30:34,206 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-03 17:30:34,206 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-03 17:30:34,207 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 6 remaining) [2023-08-03 17:30:34,209 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P2Err0ASSERT_VIOLATIONERROR_FUNCTION (4 of 6 remaining) [2023-08-03 17:30:34,209 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 6 remaining) [2023-08-03 17:30:34,209 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 6 remaining) [2023-08-03 17:30:34,209 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 6 remaining) [2023-08-03 17:30:34,209 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P2Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 6 remaining) [2023-08-03 17:30:34,210 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-03 17:30:34,210 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-08-03 17:30:34,212 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-03 17:30:34,212 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-03 17:30:34,236 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-03 17:30:34,239 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 164 places, 156 transitions, 348 flow [2023-08-03 17:30:34,387 INFO L124 PetriNetUnfolderBase]: 93/1423 cut-off events. [2023-08-03 17:30:34,387 INFO L125 PetriNetUnfolderBase]: For 26/26 co-relation queries the response was YES. [2023-08-03 17:30:34,394 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1521 conditions, 1423 events. 93/1423 cut-off events. For 26/26 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 9945 event pairs, 0 based on Foata normal form. 0/1246 useless extension candidates. Maximal degree in co-relation 1019. Up to 54 conditions per place. [2023-08-03 17:30:34,394 INFO L82 GeneralOperation]: Start removeDead. Operand has 164 places, 156 transitions, 348 flow [2023-08-03 17:30:34,399 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 164 places, 156 transitions, 348 flow [2023-08-03 17:30:34,400 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 17:30:34,400 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 164 places, 156 transitions, 348 flow [2023-08-03 17:30:34,401 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 164 places, 156 transitions, 348 flow [2023-08-03 17:30:34,401 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 164 places, 156 transitions, 348 flow [2023-08-03 17:30:34,574 INFO L124 PetriNetUnfolderBase]: 93/1423 cut-off events. [2023-08-03 17:30:34,574 INFO L125 PetriNetUnfolderBase]: For 26/26 co-relation queries the response was YES. [2023-08-03 17:30:34,578 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1521 conditions, 1423 events. 93/1423 cut-off events. For 26/26 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 9945 event pairs, 0 based on Foata normal form. 0/1246 useless extension candidates. Maximal degree in co-relation 1019. Up to 54 conditions per place. [2023-08-03 17:30:34,604 INFO L119 LiptonReduction]: Number of co-enabled transitions 6220 [2023-08-03 17:30:38,031 INFO L134 LiptonReduction]: Checked pairs total: 19199 [2023-08-03 17:30:38,031 INFO L136 LiptonReduction]: Total number of compositions: 121 [2023-08-03 17:30:38,033 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-03 17:30:38,034 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;@58431b72, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 17:30:38,034 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2023-08-03 17:30:38,037 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 17:30:38,037 INFO L124 PetriNetUnfolderBase]: 1/20 cut-off events. [2023-08-03 17:30:38,037 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 17:30:38,037 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 17:30:38,038 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-03 17:30:38,038 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P2Err0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-03 17:30:38,038 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 17:30:38,038 INFO L85 PathProgramCache]: Analyzing trace with hash -441637513, now seen corresponding path program 1 times [2023-08-03 17:30:38,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 17:30:38,039 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [124010353] [2023-08-03 17:30:38,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 17:30:38,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 17:30:38,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 17:30:38,114 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 17:30:38,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 17:30:38,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [124010353] [2023-08-03 17:30:38,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [124010353] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 17:30:38,115 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 17:30:38,115 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-03 17:30:38,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1040642142] [2023-08-03 17:30:38,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 17:30:38,115 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 17:30:38,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 17:30:38,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 17:30:38,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 17:30:38,125 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 277 [2023-08-03 17:30:38,126 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 52 transitions, 140 flow. Second operand has 3 states, 3 states have (on average 133.0) internal successors, (399), 3 states have internal predecessors, (399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 17:30:38,126 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 17:30:38,126 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 277 [2023-08-03 17:30:38,126 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 17:31:02,214 INFO L124 PetriNetUnfolderBase]: 206750/277416 cut-off events. [2023-08-03 17:31:02,215 INFO L125 PetriNetUnfolderBase]: For 4452/4452 co-relation queries the response was YES. [2023-08-03 17:31:02,793 INFO L83 FinitePrefix]: Finished finitePrefix Result has 544817 conditions, 277416 events. 206750/277416 cut-off events. For 4452/4452 co-relation queries the response was YES. Maximal size of possible extension queue 8796. Compared 1986210 event pairs, 169944 based on Foata normal form. 0/236037 useless extension candidates. Maximal degree in co-relation 157062. Up to 261960 conditions per place. [2023-08-03 17:31:03,873 INFO L140 encePairwiseOnDemand]: 273/277 looper letters, 39 selfloop transitions, 2 changer transitions 0/55 dead transitions. [2023-08-03 17:31:03,874 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 55 transitions, 228 flow [2023-08-03 17:31:03,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 17:31:03,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 17:31:03,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 436 transitions. [2023-08-03 17:31:03,881 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5246690734055355 [2023-08-03 17:31:03,881 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 436 transitions. [2023-08-03 17:31:03,881 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 436 transitions. [2023-08-03 17:31:03,881 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 17:31:03,881 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 436 transitions. [2023-08-03 17:31:03,883 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 145.33333333333334) internal successors, (436), 3 states have internal predecessors, (436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 17:31:03,885 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 277.0) internal successors, (1108), 4 states have internal predecessors, (1108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 17:31:03,886 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 277.0) internal successors, (1108), 4 states have internal predecessors, (1108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 17:31:03,886 INFO L175 Difference]: Start difference. First operand has 64 places, 52 transitions, 140 flow. Second operand 3 states and 436 transitions. [2023-08-03 17:31:03,886 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 55 transitions, 228 flow [2023-08-03 17:31:03,893 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 55 transitions, 222 flow, removed 3 selfloop flow, removed 0 redundant places. [2023-08-03 17:31:03,894 INFO L231 Difference]: Finished difference. Result has 67 places, 52 transitions, 144 flow [2023-08-03 17:31:03,894 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=277, PETRI_DIFFERENCE_MINUEND_FLOW=132, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=144, PETRI_PLACES=67, PETRI_TRANSITIONS=52} [2023-08-03 17:31:03,895 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, 3 predicate places. [2023-08-03 17:31:03,895 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 52 transitions, 144 flow [2023-08-03 17:31:03,896 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 133.0) internal successors, (399), 3 states have internal predecessors, (399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 17:31:03,896 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 17:31:03,896 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 17:31:03,896 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-03 17:31:03,896 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting P2Err0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-03 17:31:03,896 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 17:31:03,897 INFO L85 PathProgramCache]: Analyzing trace with hash 232370282, now seen corresponding path program 1 times [2023-08-03 17:31:03,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 17:31:03,897 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1839071957] [2023-08-03 17:31:03,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 17:31:03,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 17:31:03,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 17:31:03,964 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 17:31:03,964 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 17:31:03,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1839071957] [2023-08-03 17:31:03,965 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1839071957] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 17:31:03,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [487649546] [2023-08-03 17:31:03,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 17:31:03,965 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 17:31:03,965 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 17:31:03,973 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 17:31:03,997 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-03 17:31:04,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 17:31:04,078 INFO L262 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-03 17:31:04,081 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 17:31:04,094 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-03 17:31:04,094 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 17:31:04,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [487649546] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 17:31:04,095 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 17:31:04,095 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-08-03 17:31:04,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [653825305] [2023-08-03 17:31:04,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 17:31:04,095 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 17:31:04,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 17:31:04,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 17:31:04,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-03 17:31:04,109 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 277 [2023-08-03 17:31:04,110 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 52 transitions, 144 flow. Second operand has 3 states, 3 states have (on average 134.0) internal successors, (402), 3 states have internal predecessors, (402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 17:31:04,110 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 17:31:04,110 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 277 [2023-08-03 17:31:04,111 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 17:31:25,807 INFO L124 PetriNetUnfolderBase]: 200318/277415 cut-off events. [2023-08-03 17:31:25,807 INFO L125 PetriNetUnfolderBase]: For 3627/3627 co-relation queries the response was YES. [2023-08-03 17:31:26,475 INFO L83 FinitePrefix]: Finished finitePrefix Result has 535663 conditions, 277415 events. 200318/277415 cut-off events. For 3627/3627 co-relation queries the response was YES. Maximal size of possible extension queue 9177. Compared 2128940 event pairs, 160850 based on Foata normal form. 0/240155 useless extension candidates. Maximal degree in co-relation 535626. Up to 252785 conditions per place. [2023-08-03 17:31:27,732 INFO L140 encePairwiseOnDemand]: 274/277 looper letters, 45 selfloop transitions, 2 changer transitions 0/61 dead transitions. [2023-08-03 17:31:27,733 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 61 transitions, 256 flow [2023-08-03 17:31:27,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 17:31:27,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 17:31:27,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 440 transitions. [2023-08-03 17:31:27,735 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.529482551143201 [2023-08-03 17:31:27,736 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 440 transitions. [2023-08-03 17:31:27,736 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 440 transitions. [2023-08-03 17:31:27,737 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 17:31:27,737 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 440 transitions. [2023-08-03 17:31:27,739 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 146.66666666666666) internal successors, (440), 3 states have internal predecessors, (440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 17:31:27,743 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 277.0) internal successors, (1108), 4 states have internal predecessors, (1108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 17:31:27,744 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 277.0) internal successors, (1108), 4 states have internal predecessors, (1108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 17:31:27,744 INFO L175 Difference]: Start difference. First operand has 67 places, 52 transitions, 144 flow. Second operand 3 states and 440 transitions. [2023-08-03 17:31:27,744 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 61 transitions, 256 flow [2023-08-03 17:31:27,746 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 61 transitions, 254 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 17:31:27,748 INFO L231 Difference]: Finished difference. Result has 69 places, 53 transitions, 154 flow [2023-08-03 17:31:27,748 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=277, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=154, PETRI_PLACES=69, PETRI_TRANSITIONS=53} [2023-08-03 17:31:27,751 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, 5 predicate places. [2023-08-03 17:31:27,752 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 53 transitions, 154 flow [2023-08-03 17:31:27,752 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 134.0) internal successors, (402), 3 states have internal predecessors, (402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 17:31:27,752 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 17:31:27,752 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-08-03 17:31:27,761 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-03 17:31:27,957 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 17:31:27,957 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-03 17:31:27,958 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 17:31:27,958 INFO L85 PathProgramCache]: Analyzing trace with hash -1626770218, now seen corresponding path program 1 times [2023-08-03 17:31:27,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 17:31:27,958 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [631553385] [2023-08-03 17:31:27,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 17:31:27,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 17:31:27,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 17:31:28,035 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 17:31:28,035 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 17:31:28,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [631553385] [2023-08-03 17:31:28,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [631553385] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 17:31:28,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [903030247] [2023-08-03 17:31:28,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 17:31:28,036 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 17:31:28,036 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 17:31:28,038 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 17:31:28,040 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-03 17:31:28,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 17:31:28,122 INFO L262 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-03 17:31:28,123 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 17:31:28,171 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 17:31:28,171 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 17:31:28,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [903030247] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 17:31:28,171 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 17:31:28,171 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 5 [2023-08-03 17:31:28,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623546225] [2023-08-03 17:31:28,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 17:31:28,172 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 17:31:28,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 17:31:28,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 17:31:28,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-03 17:31:28,189 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 130 out of 277 [2023-08-03 17:31:28,190 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 53 transitions, 154 flow. Second operand has 5 states, 5 states have (on average 131.6) internal successors, (658), 5 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 17:31:28,190 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 17:31:28,190 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 277 [2023-08-03 17:31:28,190 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 17:31:49,640 INFO L124 PetriNetUnfolderBase]: 200306/278139 cut-off events. [2023-08-03 17:31:49,640 INFO L125 PetriNetUnfolderBase]: For 4023/4023 co-relation queries the response was YES. [2023-08-03 17:31:50,320 INFO L83 FinitePrefix]: Finished finitePrefix Result has 536901 conditions, 278139 events. 200306/278139 cut-off events. For 4023/4023 co-relation queries the response was YES. Maximal size of possible extension queue 9204. Compared 2145398 event pairs, 138936 based on Foata normal form. 9/241128 useless extension candidates. Maximal degree in co-relation 155578. Up to 252889 conditions per place. [2023-08-03 17:31:51,247 INFO L140 encePairwiseOnDemand]: 273/277 looper letters, 43 selfloop transitions, 4 changer transitions 0/60 dead transitions. [2023-08-03 17:31:51,247 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 60 transitions, 265 flow [2023-08-03 17:31:51,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-03 17:31:51,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-03 17:31:51,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 697 transitions. [2023-08-03 17:31:51,249 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5032490974729242 [2023-08-03 17:31:51,249 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 697 transitions. [2023-08-03 17:31:51,250 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 697 transitions. [2023-08-03 17:31:51,250 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 17:31:51,250 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 697 transitions. [2023-08-03 17:31:51,252 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 139.4) internal successors, (697), 5 states have internal predecessors, (697), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 17:31:51,254 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 277.0) internal successors, (1662), 6 states have internal predecessors, (1662), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 17:31:51,255 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 277.0) internal successors, (1662), 6 states have internal predecessors, (1662), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 17:31:51,255 INFO L175 Difference]: Start difference. First operand has 69 places, 53 transitions, 154 flow. Second operand 5 states and 697 transitions. [2023-08-03 17:31:51,255 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 60 transitions, 265 flow [2023-08-03 17:31:51,256 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 60 transitions, 261 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-03 17:31:51,257 INFO L231 Difference]: Finished difference. Result has 72 places, 53 transitions, 170 flow [2023-08-03 17:31:51,258 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=277, PETRI_DIFFERENCE_MINUEND_FLOW=147, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=170, PETRI_PLACES=72, PETRI_TRANSITIONS=53} [2023-08-03 17:31:51,258 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, 8 predicate places. [2023-08-03 17:31:51,258 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 53 transitions, 170 flow [2023-08-03 17:31:51,259 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 131.6) internal successors, (658), 5 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 17:31:51,259 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 17:31:51,259 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 17:31:51,268 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-03 17:31:51,463 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 17:31:51,463 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting P2Err0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-03 17:31:51,464 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 17:31:51,464 INFO L85 PathProgramCache]: Analyzing trace with hash -1663326076, now seen corresponding path program 1 times [2023-08-03 17:31:51,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 17:31:51,464 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019049566] [2023-08-03 17:31:51,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 17:31:51,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 17:31:51,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 17:31:51,698 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-03 17:31:51,698 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 17:31:51,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019049566] [2023-08-03 17:31:51,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2019049566] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 17:31:51,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [196772081] [2023-08-03 17:31:51,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 17:31:51,699 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 17:31:51,699 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 17:31:51,703 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 17:31:51,744 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-03 17:31:51,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 17:31:51,818 INFO L262 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-03 17:31:51,819 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 17:31:51,836 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-03 17:31:51,837 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 17:31:51,859 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-03 17:31:51,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [196772081] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 17:31:51,862 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 17:31:51,862 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 4 [2023-08-03 17:31:51,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1289471168] [2023-08-03 17:31:51,865 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 17:31:51,869 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 17:31:51,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 17:31:51,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 17:31:51,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-03 17:31:51,882 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 130 out of 277 [2023-08-03 17:31:51,883 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 53 transitions, 170 flow. Second operand has 5 states, 5 states have (on average 133.2) internal successors, (666), 5 states have internal predecessors, (666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 17:31:51,884 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 17:31:51,884 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 277 [2023-08-03 17:31:51,884 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 17:32:08,448 INFO L124 PetriNetUnfolderBase]: 156808/215192 cut-off events. [2023-08-03 17:32:08,448 INFO L125 PetriNetUnfolderBase]: For 3072/3072 co-relation queries the response was YES. [2023-08-03 17:32:09,006 INFO L83 FinitePrefix]: Finished finitePrefix Result has 415858 conditions, 215192 events. 156808/215192 cut-off events. For 3072/3072 co-relation queries the response was YES. Maximal size of possible extension queue 7418. Compared 1583718 event pairs, 104202 based on Foata normal form. 3/187430 useless extension candidates. Maximal degree in co-relation 147364. Up to 196246 conditions per place. [2023-08-03 17:32:09,707 INFO L140 encePairwiseOnDemand]: 274/277 looper letters, 43 selfloop transitions, 3 changer transitions 0/59 dead transitions. [2023-08-03 17:32:09,707 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 59 transitions, 268 flow [2023-08-03 17:32:09,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 17:32:09,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 17:32:09,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 566 transitions. [2023-08-03 17:32:09,709 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5108303249097473 [2023-08-03 17:32:09,709 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 566 transitions. [2023-08-03 17:32:09,709 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 566 transitions. [2023-08-03 17:32:09,709 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 17:32:09,710 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 566 transitions. [2023-08-03 17:32:09,711 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 141.5) internal successors, (566), 4 states have internal predecessors, (566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 17:32:09,713 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 277.0) internal successors, (1385), 5 states have internal predecessors, (1385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 17:32:09,714 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 277.0) internal successors, (1385), 5 states have internal predecessors, (1385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 17:32:09,714 INFO L175 Difference]: Start difference. First operand has 72 places, 53 transitions, 170 flow. Second operand 4 states and 566 transitions. [2023-08-03 17:32:09,714 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 59 transitions, 268 flow [2023-08-03 17:32:09,715 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 59 transitions, 263 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-08-03 17:32:09,716 INFO L231 Difference]: Finished difference. Result has 73 places, 52 transitions, 161 flow [2023-08-03 17:32:09,717 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=277, PETRI_DIFFERENCE_MINUEND_FLOW=155, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=161, PETRI_PLACES=73, PETRI_TRANSITIONS=52} [2023-08-03 17:32:09,717 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, 9 predicate places. [2023-08-03 17:32:09,717 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 52 transitions, 161 flow [2023-08-03 17:32:09,718 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 133.2) internal successors, (666), 5 states have internal predecessors, (666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 17:32:09,718 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 17:32:09,718 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 17:32:09,729 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-03 17:32:09,922 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 [2023-08-03 17:32:09,923 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting P2Err0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-03 17:32:09,923 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 17:32:09,924 INFO L85 PathProgramCache]: Analyzing trace with hash -2121976362, now seen corresponding path program 1 times [2023-08-03 17:32:09,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 17:32:09,924 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1260444135] [2023-08-03 17:32:09,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 17:32:09,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 17:32:09,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 17:32:09,978 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-03 17:32:09,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 17:32:09,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1260444135] [2023-08-03 17:32:09,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1260444135] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 17:32:09,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1333487119] [2023-08-03 17:32:09,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 17:32:09,979 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 17:32:09,979 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 17:32:09,981 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 17:32:09,983 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-03 17:32:10,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 17:32:10,079 INFO L262 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-03 17:32:10,080 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 17:32:10,096 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-03 17:32:10,097 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 17:32:10,119 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-03 17:32:10,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1333487119] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 17:32:10,120 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 17:32:10,120 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 5 [2023-08-03 17:32:10,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092489349] [2023-08-03 17:32:10,120 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 17:32:10,120 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 17:32:10,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 17:32:10,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 17:32:10,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-03 17:32:10,135 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 130 out of 277 [2023-08-03 17:32:10,137 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 52 transitions, 161 flow. Second operand has 5 states, 5 states have (on average 133.4) internal successors, (667), 5 states have internal predecessors, (667), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 17:32:10,137 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 17:32:10,137 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 277 [2023-08-03 17:32:10,137 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 17:32:24,193 INFO L124 PetriNetUnfolderBase]: 130384/177721 cut-off events. [2023-08-03 17:32:24,194 INFO L125 PetriNetUnfolderBase]: For 2203/2203 co-relation queries the response was YES. [2023-08-03 17:32:24,688 INFO L83 FinitePrefix]: Finished finitePrefix Result has 343398 conditions, 177721 events. 130384/177721 cut-off events. For 2203/2203 co-relation queries the response was YES. Maximal size of possible extension queue 6499. Compared 1264221 event pairs, 82690 based on Foata normal form. 36/155572 useless extension candidates. Maximal degree in co-relation 121481. Up to 160732 conditions per place. [2023-08-03 17:32:25,247 INFO L140 encePairwiseOnDemand]: 273/277 looper letters, 54 selfloop transitions, 4 changer transitions 0/71 dead transitions. [2023-08-03 17:32:25,247 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 71 transitions, 315 flow [2023-08-03 17:32:25,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 17:32:25,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 17:32:25,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 578 transitions. [2023-08-03 17:32:25,249 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5216606498194946 [2023-08-03 17:32:25,249 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 578 transitions. [2023-08-03 17:32:25,249 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 578 transitions. [2023-08-03 17:32:25,249 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 17:32:25,249 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 578 transitions. [2023-08-03 17:32:25,250 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 144.5) internal successors, (578), 4 states have internal predecessors, (578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 17:32:25,252 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 277.0) internal successors, (1385), 5 states have internal predecessors, (1385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 17:32:25,252 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 277.0) internal successors, (1385), 5 states have internal predecessors, (1385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 17:32:25,252 INFO L175 Difference]: Start difference. First operand has 73 places, 52 transitions, 161 flow. Second operand 4 states and 578 transitions. [2023-08-03 17:32:25,252 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 71 transitions, 315 flow [2023-08-03 17:32:25,254 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 71 transitions, 309 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-03 17:32:25,255 INFO L231 Difference]: Finished difference. Result has 75 places, 53 transitions, 175 flow [2023-08-03 17:32:25,255 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=277, PETRI_DIFFERENCE_MINUEND_FLOW=155, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=175, PETRI_PLACES=75, PETRI_TRANSITIONS=53} [2023-08-03 17:32:25,255 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, 11 predicate places. [2023-08-03 17:32:25,256 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 53 transitions, 175 flow [2023-08-03 17:32:25,256 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 133.4) internal successors, (667), 5 states have internal predecessors, (667), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 17:32:25,256 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 17:32:25,256 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 17:32:25,265 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-03 17:32:25,462 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 [2023-08-03 17:32:25,462 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-03 17:32:25,462 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 17:32:25,462 INFO L85 PathProgramCache]: Analyzing trace with hash 1067318840, now seen corresponding path program 1 times [2023-08-03 17:32:25,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 17:32:25,463 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [445929373] [2023-08-03 17:32:25,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 17:32:25,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 17:32:25,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 17:32:25,524 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-03 17:32:25,525 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 17:32:25,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [445929373] [2023-08-03 17:32:25,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [445929373] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 17:32:25,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1772581240] [2023-08-03 17:32:25,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 17:32:25,526 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 17:32:25,526 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 17:32:25,536 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 17:32:25,542 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-03 17:32:25,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 17:32:25,626 INFO L262 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-03 17:32:25,627 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 17:32:25,655 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-03 17:32:25,655 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 17:32:25,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1772581240] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 17:32:25,655 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 17:32:25,656 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 6 [2023-08-03 17:32:25,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [112840644] [2023-08-03 17:32:25,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 17:32:25,657 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 17:32:25,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 17:32:25,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 17:32:25,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-03 17:32:25,669 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 130 out of 277 [2023-08-03 17:32:25,669 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 53 transitions, 175 flow. Second operand has 5 states, 5 states have (on average 132.6) internal successors, (663), 5 states have internal predecessors, (663), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 17:32:25,669 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 17:32:25,670 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 277 [2023-08-03 17:32:25,670 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 17:32:39,266 INFO L124 PetriNetUnfolderBase]: 129976/177133 cut-off events. [2023-08-03 17:32:39,266 INFO L125 PetriNetUnfolderBase]: For 3097/3097 co-relation queries the response was YES. [2023-08-03 17:32:39,751 INFO L83 FinitePrefix]: Finished finitePrefix Result has 342741 conditions, 177133 events. 129976/177133 cut-off events. For 3097/3097 co-relation queries the response was YES. Maximal size of possible extension queue 6499. Compared 1259988 event pairs, 40918 based on Foata normal form. 144/155092 useless extension candidates. Maximal degree in co-relation 121231. Up to 160680 conditions per place. [2023-08-03 17:32:40,284 INFO L140 encePairwiseOnDemand]: 274/277 looper letters, 58 selfloop transitions, 3 changer transitions 0/73 dead transitions. [2023-08-03 17:32:40,285 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 73 transitions, 333 flow [2023-08-03 17:32:40,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-03 17:32:40,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-03 17:32:40,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 711 transitions. [2023-08-03 17:32:40,287 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5133574007220216 [2023-08-03 17:32:40,287 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 711 transitions. [2023-08-03 17:32:40,287 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 711 transitions. [2023-08-03 17:32:40,287 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 17:32:40,287 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 711 transitions. [2023-08-03 17:32:40,288 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 142.2) internal successors, (711), 5 states have internal predecessors, (711), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 17:32:40,290 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 277.0) internal successors, (1662), 6 states have internal predecessors, (1662), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 17:32:40,291 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 277.0) internal successors, (1662), 6 states have internal predecessors, (1662), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 17:32:40,291 INFO L175 Difference]: Start difference. First operand has 75 places, 53 transitions, 175 flow. Second operand 5 states and 711 transitions. [2023-08-03 17:32:40,291 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 73 transitions, 333 flow [2023-08-03 17:32:40,293 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 73 transitions, 326 flow, removed 1 selfloop flow, removed 3 redundant places. [2023-08-03 17:32:40,294 INFO L231 Difference]: Finished difference. Result has 75 places, 51 transitions, 164 flow [2023-08-03 17:32:40,294 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=277, PETRI_DIFFERENCE_MINUEND_FLOW=158, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=164, PETRI_PLACES=75, PETRI_TRANSITIONS=51} [2023-08-03 17:32:40,295 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, 11 predicate places. [2023-08-03 17:32:40,295 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 51 transitions, 164 flow [2023-08-03 17:32:40,296 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 132.6) internal successors, (663), 5 states have internal predecessors, (663), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 17:32:40,296 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 17:32:40,296 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 17:32:40,301 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-08-03 17:32:40,501 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 [2023-08-03 17:32:40,501 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting P2Err0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-03 17:32:40,505 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 17:32:40,505 INFO L85 PathProgramCache]: Analyzing trace with hash -803941583, now seen corresponding path program 1 times [2023-08-03 17:32:40,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 17:32:40,505 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [131541329] [2023-08-03 17:32:40,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 17:32:40,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 17:32:40,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 17:32:40,618 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-08-03 17:32:40,618 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 17:32:40,618 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [131541329] [2023-08-03 17:32:40,618 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [131541329] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 17:32:40,618 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 17:32:40,618 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-03 17:32:40,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085974227] [2023-08-03 17:32:40,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 17:32:40,619 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 17:32:40,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 17:32:40,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 17:32:40,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 17:32:40,621 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 134 out of 277 [2023-08-03 17:32:40,621 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 51 transitions, 164 flow. Second operand has 3 states, 3 states have (on average 138.66666666666666) internal successors, (416), 3 states have internal predecessors, (416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 17:32:40,621 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 17:32:40,621 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 134 of 277 [2023-08-03 17:32:40,621 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 17:32:52,227 INFO L124 PetriNetUnfolderBase]: 111928/153757 cut-off events. [2023-08-03 17:32:52,227 INFO L125 PetriNetUnfolderBase]: For 3007/3007 co-relation queries the response was YES. [2023-08-03 17:32:52,651 INFO L83 FinitePrefix]: Finished finitePrefix Result has 296312 conditions, 153757 events. 111928/153757 cut-off events. For 3007/3007 co-relation queries the response was YES. Maximal size of possible extension queue 5362. Compared 1089701 event pairs, 22216 based on Foata normal form. 0/135460 useless extension candidates. Maximal degree in co-relation 104859. Up to 127009 conditions per place. [2023-08-03 17:32:53,116 INFO L140 encePairwiseOnDemand]: 272/277 looper letters, 55 selfloop transitions, 3 changer transitions 0/70 dead transitions. [2023-08-03 17:32:53,117 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 70 transitions, 323 flow [2023-08-03 17:32:53,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 17:32:53,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 17:32:53,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 460 transitions. [2023-08-03 17:32:53,119 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5535499398315282 [2023-08-03 17:32:53,119 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 460 transitions. [2023-08-03 17:32:53,119 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 460 transitions. [2023-08-03 17:32:53,119 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 17:32:53,119 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 460 transitions. [2023-08-03 17:32:53,120 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 153.33333333333334) internal successors, (460), 3 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 17:32:53,124 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 277.0) internal successors, (1108), 4 states have internal predecessors, (1108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 17:32:53,126 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 277.0) internal successors, (1108), 4 states have internal predecessors, (1108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 17:32:53,126 INFO L175 Difference]: Start difference. First operand has 75 places, 51 transitions, 164 flow. Second operand 3 states and 460 transitions. [2023-08-03 17:32:53,126 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 70 transitions, 323 flow [2023-08-03 17:32:53,127 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 70 transitions, 318 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-03 17:32:53,129 INFO L231 Difference]: Finished difference. Result has 75 places, 53 transitions, 180 flow [2023-08-03 17:32:53,129 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=277, PETRI_DIFFERENCE_MINUEND_FLOW=159, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=180, PETRI_PLACES=75, PETRI_TRANSITIONS=53} [2023-08-03 17:32:53,129 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, 11 predicate places. [2023-08-03 17:32:53,130 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 53 transitions, 180 flow [2023-08-03 17:32:53,130 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 138.66666666666666) internal successors, (416), 3 states have internal predecessors, (416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 17:32:53,130 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 17:32:53,130 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 17:32:53,130 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-03 17:32:53,130 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-03 17:32:53,131 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 17:32:53,131 INFO L85 PathProgramCache]: Analyzing trace with hash -803923542, now seen corresponding path program 1 times [2023-08-03 17:32:53,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 17:32:53,131 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [214646196] [2023-08-03 17:32:53,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 17:32:53,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 17:32:53,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 17:32:53,178 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-08-03 17:32:53,178 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 17:32:53,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [214646196] [2023-08-03 17:32:53,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [214646196] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 17:32:53,178 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 17:32:53,178 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-03 17:32:53,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609533860] [2023-08-03 17:32:53,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 17:32:53,179 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 17:32:53,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 17:32:53,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 17:32:53,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 17:32:53,187 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 277 [2023-08-03 17:32:53,187 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 53 transitions, 180 flow. Second operand has 3 states, 3 states have (on average 135.66666666666666) internal successors, (407), 3 states have internal predecessors, (407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 17:32:53,188 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 17:32:53,188 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 277 [2023-08-03 17:32:53,188 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 17:33:05,513 INFO L124 PetriNetUnfolderBase]: 110296/150253 cut-off events. [2023-08-03 17:33:05,513 INFO L125 PetriNetUnfolderBase]: For 9205/9205 co-relation queries the response was YES. [2023-08-03 17:33:06,016 INFO L83 FinitePrefix]: Finished finitePrefix Result has 309133 conditions, 150253 events. 110296/150253 cut-off events. For 9205/9205 co-relation queries the response was YES. Maximal size of possible extension queue 5869. Compared 1070119 event pairs, 91144 based on Foata normal form. 0/135160 useless extension candidates. Maximal degree in co-relation 109004. Up to 133924 conditions per place. [2023-08-03 17:33:06,487 INFO L140 encePairwiseOnDemand]: 274/277 looper letters, 54 selfloop transitions, 2 changer transitions 0/68 dead transitions. [2023-08-03 17:33:06,487 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 68 transitions, 325 flow [2023-08-03 17:33:06,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 17:33:06,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 17:33:06,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 446 transitions. [2023-08-03 17:33:06,489 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5367027677496992 [2023-08-03 17:33:06,489 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 446 transitions. [2023-08-03 17:33:06,489 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 446 transitions. [2023-08-03 17:33:06,489 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 17:33:06,489 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 446 transitions. [2023-08-03 17:33:06,490 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) [2023-08-03 17:33:06,492 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 277.0) internal successors, (1108), 4 states have internal predecessors, (1108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 17:33:06,492 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 277.0) internal successors, (1108), 4 states have internal predecessors, (1108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 17:33:06,492 INFO L175 Difference]: Start difference. First operand has 75 places, 53 transitions, 180 flow. Second operand 3 states and 446 transitions. [2023-08-03 17:33:06,492 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 68 transitions, 325 flow [2023-08-03 17:33:06,495 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 68 transitions, 321 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 17:33:06,497 INFO L231 Difference]: Finished difference. Result has 77 places, 54 transitions, 189 flow [2023-08-03 17:33:06,497 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=277, PETRI_DIFFERENCE_MINUEND_FLOW=177, PETRI_DIFFERENCE_MINUEND_PLACES=74, 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=189, PETRI_PLACES=77, PETRI_TRANSITIONS=54} [2023-08-03 17:33:06,497 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, 13 predicate places. [2023-08-03 17:33:06,498 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 54 transitions, 189 flow [2023-08-03 17:33:06,498 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 135.66666666666666) internal successors, (407), 3 states have internal predecessors, (407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 17:33:06,498 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 17:33:06,498 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 17:33:06,498 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-03 17:33:06,498 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-03 17:33:06,499 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 17:33:06,499 INFO L85 PathProgramCache]: Analyzing trace with hash 1066265174, now seen corresponding path program 1 times [2023-08-03 17:33:06,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 17:33:06,499 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1198411990] [2023-08-03 17:33:06,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 17:33:06,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 17:33:06,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 17:33:06,571 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-08-03 17:33:06,571 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 17:33:06,571 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1198411990] [2023-08-03 17:33:06,571 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1198411990] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 17:33:06,571 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [991782383] [2023-08-03 17:33:06,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 17:33:06,572 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 17:33:06,572 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 17:33:06,573 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 17:33:06,577 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-08-03 17:33:06,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 17:33:06,686 INFO L262 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-03 17:33:06,688 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 17:33:06,701 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-08-03 17:33:06,701 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 17:33:06,715 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-08-03 17:33:06,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [991782383] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 17:33:06,718 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 17:33:06,718 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 5 [2023-08-03 17:33:06,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126507821] [2023-08-03 17:33:06,720 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 17:33:06,721 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 17:33:06,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 17:33:06,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 17:33:06,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-03 17:33:06,731 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 130 out of 277 [2023-08-03 17:33:06,732 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 54 transitions, 189 flow. Second operand has 5 states, 5 states have (on average 134.2) internal successors, (671), 5 states have internal predecessors, (671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 17:33:06,732 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 17:33:06,732 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 277 [2023-08-03 17:33:06,732 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 17:33:17,614 INFO L124 PetriNetUnfolderBase]: 102040/130765 cut-off events. [2023-08-03 17:33:17,615 INFO L125 PetriNetUnfolderBase]: For 15181/15181 co-relation queries the response was YES. [2023-08-03 17:33:18,037 INFO L83 FinitePrefix]: Finished finitePrefix Result has 282974 conditions, 130765 events. 102040/130765 cut-off events. For 15181/15181 co-relation queries the response was YES. Maximal size of possible extension queue 5558. Compared 803709 event pairs, 52168 based on Foata normal form. 576/120748 useless extension candidates. Maximal degree in co-relation 99772. Up to 86596 conditions per place. [2023-08-03 17:33:18,654 INFO L140 encePairwiseOnDemand]: 273/277 looper letters, 73 selfloop transitions, 4 changer transitions 0/89 dead transitions. [2023-08-03 17:33:18,654 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 89 transitions, 427 flow [2023-08-03 17:33:18,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 17:33:18,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 17:33:18,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 592 transitions. [2023-08-03 17:33:18,656 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5342960288808665 [2023-08-03 17:33:18,657 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 592 transitions. [2023-08-03 17:33:18,657 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 592 transitions. [2023-08-03 17:33:18,657 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 17:33:18,657 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 592 transitions. [2023-08-03 17:33:18,658 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 148.0) internal successors, (592), 4 states have internal predecessors, (592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 17:33:18,660 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 277.0) internal successors, (1385), 5 states have internal predecessors, (1385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 17:33:18,660 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 277.0) internal successors, (1385), 5 states have internal predecessors, (1385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 17:33:18,660 INFO L175 Difference]: Start difference. First operand has 77 places, 54 transitions, 189 flow. Second operand 4 states and 592 transitions. [2023-08-03 17:33:18,660 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 89 transitions, 427 flow [2023-08-03 17:33:18,668 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 89 transitions, 425 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 17:33:18,669 INFO L231 Difference]: Finished difference. Result has 81 places, 55 transitions, 207 flow [2023-08-03 17:33:18,669 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=277, PETRI_DIFFERENCE_MINUEND_FLOW=187, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=207, PETRI_PLACES=81, PETRI_TRANSITIONS=55} [2023-08-03 17:33:18,670 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, 17 predicate places. [2023-08-03 17:33:18,670 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 55 transitions, 207 flow [2023-08-03 17:33:18,670 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 134.2) internal successors, (671), 5 states have internal predecessors, (671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 17:33:18,670 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 17:33:18,670 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] [2023-08-03 17:33:18,682 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-08-03 17:33:18,882 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 17:33:18,882 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting P2Err0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-03 17:33:18,882 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 17:33:18,883 INFO L85 PathProgramCache]: Analyzing trace with hash -1361520258, now seen corresponding path program 1 times [2023-08-03 17:33:18,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 17:33:18,883 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2039801460] [2023-08-03 17:33:18,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 17:33:18,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 17:33:18,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 17:33:18,913 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-03 17:33:18,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 17:33:18,953 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-03 17:33:18,953 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-03 17:33:18,954 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location P2Err0ASSERT_VIOLATIONERROR_FUNCTION (6 of 7 remaining) [2023-08-03 17:33:18,954 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P2Err0ASSERT_VIOLATIONERROR_FUNCTION (5 of 7 remaining) [2023-08-03 17:33:18,954 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (4 of 7 remaining) [2023-08-03 17:33:18,954 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 7 remaining) [2023-08-03 17:33:18,954 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 7 remaining) [2023-08-03 17:33:18,954 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 7 remaining) [2023-08-03 17:33:18,954 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P2Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 7 remaining) [2023-08-03 17:33:18,955 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-03 17:33:18,955 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 17:33:18,959 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 2 thread instances [2023-08-03 17:33:18,960 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-03 17:33:19,050 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.08 05:33:19 BasicIcfg [2023-08-03 17:33:19,050 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-03 17:33:19,051 INFO L158 Benchmark]: Toolchain (without parser) took 170591.74ms. Allocated memory was 530.6MB in the beginning and 16.0GB in the end (delta: 15.5GB). Free memory was 479.8MB in the beginning and 10.3GB in the end (delta: -9.8GB). Peak memory consumption was 5.6GB. Max. memory is 16.0GB. [2023-08-03 17:33:19,051 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 371.2MB. Free memory was 324.3MB in the beginning and 324.2MB in the end (delta: 139.9kB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-03 17:33:19,051 INFO L158 Benchmark]: CACSL2BoogieTranslator took 534.94ms. Allocated memory is still 530.6MB. Free memory was 479.4MB in the beginning and 456.5MB in the end (delta: 22.9MB). Peak memory consumption was 23.1MB. Max. memory is 16.0GB. [2023-08-03 17:33:19,051 INFO L158 Benchmark]: Boogie Procedure Inliner took 70.77ms. Allocated memory is still 530.6MB. Free memory was 456.5MB in the beginning and 453.9MB in the end (delta: 2.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. [2023-08-03 17:33:19,051 INFO L158 Benchmark]: Boogie Preprocessor took 45.37ms. Allocated memory is still 530.6MB. Free memory was 453.9MB in the beginning and 452.2MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-03 17:33:19,052 INFO L158 Benchmark]: RCFGBuilder took 616.66ms. Allocated memory is still 530.6MB. Free memory was 452.2MB in the beginning and 481.6MB in the end (delta: -29.4MB). Peak memory consumption was 23.0MB. Max. memory is 16.0GB. [2023-08-03 17:33:19,052 INFO L158 Benchmark]: TraceAbstraction took 169317.60ms. Allocated memory was 530.6MB in the beginning and 16.0GB in the end (delta: 15.5GB). Free memory was 480.5MB in the beginning and 10.3GB in the end (delta: -9.8GB). Peak memory consumption was 5.6GB. Max. memory is 16.0GB. [2023-08-03 17:33:19,053 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 371.2MB. Free memory was 324.3MB in the beginning and 324.2MB in the end (delta: 139.9kB). There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 534.94ms. Allocated memory is still 530.6MB. Free memory was 479.4MB in the beginning and 456.5MB in the end (delta: 22.9MB). Peak memory consumption was 23.1MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 70.77ms. Allocated memory is still 530.6MB. Free memory was 456.5MB in the beginning and 453.9MB in the end (delta: 2.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. * Boogie Preprocessor took 45.37ms. Allocated memory is still 530.6MB. Free memory was 453.9MB in the beginning and 452.2MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.0GB. * RCFGBuilder took 616.66ms. Allocated memory is still 530.6MB. Free memory was 452.2MB in the beginning and 481.6MB in the end (delta: -29.4MB). Peak memory consumption was 23.0MB. Max. memory is 16.0GB. * TraceAbstraction took 169317.60ms. Allocated memory was 530.6MB in the beginning and 16.0GB in the end (delta: 15.5GB). Free memory was 480.5MB in the beginning and 10.3GB in the end (delta: -9.8GB). Peak memory consumption was 5.6GB. 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: 3.5s, 133 PlacesBefore, 38 PlacesAfterwards, 131 TransitionsBefore, 32 TransitionsAfterwards, 2568 CoEnabledTransitionPairs, 7 FixpointIterations, 38 TrivialSequentialCompositions, 59 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 14 ConcurrentYvCompositions, 4 ChoiceCompositions, 115 TotalNumberOfCompositions, 6149 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2901, independent: 2733, independent conditional: 0, independent unconditional: 2733, dependent: 168, dependent conditional: 0, dependent unconditional: 168, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1393, independent: 1359, independent conditional: 0, independent unconditional: 1359, dependent: 34, dependent conditional: 0, dependent unconditional: 34, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 2901, independent: 1374, independent conditional: 0, independent unconditional: 1374, dependent: 134, dependent conditional: 0, dependent unconditional: 134, unknown: 1393, unknown conditional: 0, unknown unconditional: 1393] , Statistics on independence cache: Total cache size (in pairs): 113, Positive cache size: 99, Positive conditional cache size: 0, Positive unconditional cache size: 99, 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: 3.6s, 164 PlacesBefore, 64 PlacesAfterwards, 156 TransitionsBefore, 52 TransitionsAfterwards, 6220 CoEnabledTransitionPairs, 7 FixpointIterations, 38 TrivialSequentialCompositions, 65 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 14 ConcurrentYvCompositions, 4 ChoiceCompositions, 121 TotalNumberOfCompositions, 19199 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 8661, independent: 8332, independent conditional: 0, independent unconditional: 8332, dependent: 329, dependent conditional: 0, dependent unconditional: 329, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 3208, independent: 3125, independent conditional: 0, independent unconditional: 3125, dependent: 83, dependent conditional: 0, dependent unconditional: 83, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 8661, independent: 5207, independent conditional: 0, independent unconditional: 5207, dependent: 246, dependent conditional: 0, dependent unconditional: 246, unknown: 3208, unknown conditional: 0, unknown unconditional: 3208] , Statistics on independence cache: Total cache size (in pairs): 395, Positive cache size: 367, Positive conditional cache size: 0, Positive unconditional cache size: 367, Negative cache size: 28, Negative conditional cache size: 0, Negative unconditional cache size: 28, 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_p1_EAX = 0; [L713] 0 int __unbuffered_p2_EAX = 0; [L715] 0 int __unbuffered_p2_EBX = 0; [L717] 0 int a = 0; [L718] 0 _Bool main$tmp_guard0; [L719] 0 _Bool main$tmp_guard1; [L721] 0 int x = 0; [L723] 0 int y = 0; [L724] 0 _Bool y$flush_delayed; [L725] 0 int y$mem_tmp; [L726] 0 _Bool y$r_buff0_thd0; [L727] 0 _Bool y$r_buff0_thd1; [L728] 0 _Bool y$r_buff0_thd2; [L729] 0 _Bool y$r_buff0_thd3; [L730] 0 _Bool y$r_buff1_thd0; [L731] 0 _Bool y$r_buff1_thd1; [L732] 0 _Bool y$r_buff1_thd2; [L733] 0 _Bool y$r_buff1_thd3; [L734] 0 _Bool y$read_delayed; [L735] 0 int *y$read_delayed_var; [L736] 0 int y$w_buff0; [L737] 0 _Bool y$w_buff0_used; [L738] 0 int y$w_buff1; [L739] 0 _Bool y$w_buff1_used; [L741] 0 int z = 0; [L742] 0 _Bool weak$$choice0; [L743] 0 _Bool weak$$choice2; [L833] 0 pthread_t t1004[2]; [L834] 0 int asdf=0; VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p2_EAX=0, __unbuffered_p2_EBX=0, a=0, asdf=0, main$tmp_guard0=0, main$tmp_guard1=0, t1004={5:0}, weak$$choice0=0, weak$$choice2=0, x=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=0, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, y=0, z=0] [L834] COND TRUE 0 asdf<2 [L834] FCALL, FORK 0 pthread_create(&t1004[asdf], ((void *)0), P0, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=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(&t1004[asdf], ((void *)0), P0, ((void *)0))=-5, t1004={5:0}, weak$$choice0=0, weak$$choice2=0, x=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=0, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, y=0, z=0] [L834] 0 asdf++ VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p2_EAX=0, __unbuffered_p2_EBX=0, a=0, arg={0:0}, asdf=1, main$tmp_guard0=0, main$tmp_guard1=0, t1004={5:0}, weak$$choice0=0, weak$$choice2=0, x=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=0, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, y=0, z=0] [L834] COND TRUE 0 asdf<2 [L834] FCALL, FORK 0 pthread_create(&t1004[asdf], ((void *)0), P0, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=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(&t1004[asdf], ((void *)0), P0, ((void *)0))=-4, t1004={5:0}, weak$$choice0=0, weak$$choice2=0, x=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=0, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, y=0, z=0] [L834] 0 asdf++ VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p2_EAX=0, __unbuffered_p2_EBX=0, a=0, arg={0:0}, asdf=2, main$tmp_guard0=0, main$tmp_guard1=0, t1004={5:0}, weak$$choice0=0, weak$$choice2=0, x=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=0, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, y=0, z=0] [L834] COND FALSE 0 !(asdf<2) [L835] 0 pthread_t t1005[2]; [L836] 0 int asdf=0; VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=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, t1004={5:0}, t1005={6:0}, weak$$choice0=0, weak$$choice2=0, x=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=0, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, y=0, z=0] [L836] COND TRUE 0 asdf<2 [L836] FCALL, FORK 0 pthread_create(&t1005[asdf], ((void *)0), P1, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=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(&t1005[asdf], ((void *)0), P1, ((void *)0))=-3, t1004={5:0}, t1005={6:0}, weak$$choice0=0, weak$$choice2=0, x=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=0, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, y=0, z=0] [L836] 0 asdf++ VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=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, t1004={5:0}, t1005={6:0}, weak$$choice0=0, weak$$choice2=0, x=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=0, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, y=0, z=0] [L836] COND TRUE 0 asdf<2 [L836] FCALL, FORK 0 pthread_create(&t1005[asdf], ((void *)0), P1, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=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(&t1005[asdf], ((void *)0), P1, ((void *)0))=-2, t1004={5:0}, t1005={6:0}, weak$$choice0=0, weak$$choice2=0, x=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=0, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, y=0, z=0] [L836] 0 asdf++ VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=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, t1004={5:0}, t1005={6:0}, weak$$choice0=0, weak$$choice2=0, x=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=0, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, y=0, z=0] [L836] COND FALSE 0 !(asdf<2) [L837] 0 pthread_t t1006[2]; [L838] 0 int asdf=0; VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=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, t1004={5:0}, t1005={6:0}, t1006={3:0}, weak$$choice0=0, weak$$choice2=0, x=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=0, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, y=0, z=0] [L838] COND TRUE 0 asdf<2 [L838] FCALL, FORK 0 pthread_create(&t1006[asdf], ((void *)0), P2, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=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(&t1006[asdf], ((void *)0), P2, ((void *)0))=-1, t1004={5:0}, t1005={6:0}, t1006={3:0}, weak$$choice0=0, weak$$choice2=0, x=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=0, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, y=0, z=0] [L790] 5 y$w_buff1 = y$w_buff0 [L791] 5 y$w_buff0 = 1 [L792] 5 y$w_buff1_used = y$w_buff0_used [L793] 5 y$w_buff0_used = (_Bool)1 [L794] CALL 5 __VERIFIER_assert(!(y$w_buff1_used && y$w_buff0_used)) [L18] COND FALSE 5 !(!expression) [L794] RET 5 __VERIFIER_assert(!(y$w_buff1_used && y$w_buff0_used)) [L795] 5 y$r_buff1_thd0 = y$r_buff0_thd0 [L796] 5 y$r_buff1_thd1 = y$r_buff0_thd1 [L797] 5 y$r_buff1_thd2 = y$r_buff0_thd2 [L798] 5 y$r_buff1_thd3 = y$r_buff0_thd3 [L799] 5 y$r_buff0_thd3 = (_Bool)1 VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p2_EAX=0, __unbuffered_p2_EBX=0, a=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=1, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0, y=0, z=0] [L838] 0 asdf++ VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=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, t1004={5:0}, t1005={6:0}, t1006={3:0}, weak$$choice0=0, weak$$choice2=0, x=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=1, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0, y=0, z=0] [L838] COND TRUE 0 asdf<2 [L838] FCALL, FORK 0 pthread_create(&t1006[asdf], ((void *)0), P2, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=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(&t1006[asdf], ((void *)0), P2, ((void *)0))=0, t1004={5:0}, t1005={6:0}, t1006={3:0}, weak$$choice0=0, weak$$choice2=0, x=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=1, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0, y=0, z=0] [L790] 6 y$w_buff1 = y$w_buff0 [L791] 6 y$w_buff0 = 1 [L792] 6 y$w_buff1_used = y$w_buff0_used [L793] 6 y$w_buff0_used = (_Bool)1 [L794] CALL 6 __VERIFIER_assert(!(y$w_buff1_used && y$w_buff0_used)) [L18] COND TRUE 6 !expression [L18] 6 reach_error() VAL [\old(expression)=0, __unbuffered_cnt=0, __unbuffered_p1_EAX=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$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=1, y$w_buff0_used=1, y$w_buff1=1, y$w_buff1_used=1, y=0, 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. - UnprovableResult [Line: 834]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 838]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 836]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 152 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: 4.4s, OverallIterations: 2, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.7s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 18 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 8 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 2 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 60 IncrementalHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2 mSolverCounterUnsat, 0 mSDtfsCounter, 60 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=85occurred in iteration=1, InterpolantAutomatonStates: 3, 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, 0.1s InterpolantComputationTime, 12 NumberOfCodeBlocks, 12 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 5 ConstructedInterpolants, 0 QuantifiedInterpolants, 7 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - StatisticsResult: Ultimate Automizer benchmark data with 2 thread instances CFG has 10 procedures, 177 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: 164.7s, OverallIterations: 10, TraceHistogramMax: 3, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 157.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.8s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 380 SdHoareTripleChecker+Valid, 0.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 318 mSDsluCounter, 3 SdHoareTripleChecker+Invalid, 0.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 32 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 845 IncrementalHoareTripleChecker+Invalid, 877 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 32 mSolverCounterUnsat, 3 mSDtfsCounter, 845 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 177 GetRequests, 148 SyntacticMatches, 6 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=207occurred in iteration=9, InterpolantAutomatonStates: 34, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 275 NumberOfCodeBlocks, 275 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 288 ConstructedInterpolants, 0 QuantifiedInterpolants, 508 SizeOfPredicates, 0 NumberOfNonLiveVariables, 1138 ConjunctsInSsa, 19 ConjunctsInUnsatCore, 18 InterpolantComputations, 6 PerfectInterpolantSequences, 116/136 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! [2023-08-03 17:33:19,072 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...