/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf --traceabstraction.order.of.the.error.locations.to.be.checked PROGRAM_FIRST -tc /storage/repos/CAV22/benchmarks/AutomizerCInline.xml -i /storage/repos/CAV22/benchmarks/increased_bounds/pthread-wmm_mix052_pso.opt_rmo.opt_tso.opt_bound2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-19404b3-m [2023-08-04 06:15:50,209 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-04 06:15:50,289 INFO L114 SettingsManager]: Loading settings from /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-04 06:15:50,295 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-04 06:15:50,296 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-08-04 06:15:50,297 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Translation Mode: [2023-08-04 06:15:50,297 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-04 06:15:50,331 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-04 06:15:50,331 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-04 06:15:50,332 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-04 06:15:50,332 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-04 06:15:50,332 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-04 06:15:50,333 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-04 06:15:50,333 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-04 06:15:50,334 INFO L153 SettingsManager]: * Use SBE=true [2023-08-04 06:15:50,334 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-04 06:15:50,334 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-04 06:15:50,335 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-04 06:15:50,335 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-04 06:15:50,335 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-04 06:15:50,336 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-04 06:15:50,340 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-04 06:15:50,341 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-04 06:15:50,341 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-04 06:15:50,346 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-04 06:15:50,346 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-04 06:15:50,347 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-04 06:15:50,347 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-04 06:15:50,347 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-04 06:15:50,347 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-04 06:15:50,348 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-04 06:15:50,349 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-04 06:15:50,349 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-04 06:15:50,349 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-04 06:15:50,349 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-04 06:15:50,349 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-04 06:15:50,349 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-04 06:15:50,350 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-04 06:15:50,350 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-04 06:15:50,350 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-04 06:15:50,350 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-04 06:15:50,350 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> PROGRAM_FIRST [2023-08-04 06:15:50,564 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-04 06:15:50,587 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-04 06:15:50,589 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-04 06:15:50,590 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-04 06:15:50,591 INFO L274 PluginConnector]: CDTParser initialized [2023-08-04 06:15:50,592 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/CAV22/benchmarks/increased_bounds/pthread-wmm_mix052_pso.opt_rmo.opt_tso.opt_bound2.i [2023-08-04 06:15:51,808 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-04 06:15:52,094 INFO L384 CDTParser]: Found 1 translation units. [2023-08-04 06:15:52,095 INFO L180 CDTParser]: Scanning /storage/repos/CAV22/benchmarks/increased_bounds/pthread-wmm_mix052_pso.opt_rmo.opt_tso.opt_bound2.i [2023-08-04 06:15:52,111 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7606ce400/ff216c07cb9f4f31a7e0fec5a3d8b890/FLAGc45809106 [2023-08-04 06:15:52,124 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7606ce400/ff216c07cb9f4f31a7e0fec5a3d8b890 [2023-08-04 06:15:52,126 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-04 06:15:52,127 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-04 06:15:52,128 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-04 06:15:52,128 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-04 06:15:52,143 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-04 06:15:52,144 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.08 06:15:52" (1/1) ... [2023-08-04 06:15:52,145 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6a77350a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 06:15:52, skipping insertion in model container [2023-08-04 06:15:52,145 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.08 06:15:52" (1/1) ... [2023-08-04 06:15:52,199 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-04 06:15:52,323 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_mix052_pso.opt_rmo.opt_tso.opt_bound2.i[964,977] [2023-08-04 06:15:52,512 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-04 06:15:52,526 INFO L201 MainTranslator]: Completed pre-run [2023-08-04 06:15:52,542 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_mix052_pso.opt_rmo.opt_tso.opt_bound2.i[964,977] [2023-08-04 06:15:52,559 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [267] [2023-08-04 06:15:52,561 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [267] [2023-08-04 06:15:52,610 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-04 06:15:52,634 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-04 06:15:52,635 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-04 06:15:52,640 INFO L206 MainTranslator]: Completed translation [2023-08-04 06:15:52,641 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 06:15:52 WrapperNode [2023-08-04 06:15:52,641 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-04 06:15:52,641 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-04 06:15:52,642 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-04 06:15:52,642 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-04 06:15:52,646 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 06:15:52" (1/1) ... [2023-08-04 06:15:52,659 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 06:15:52" (1/1) ... [2023-08-04 06:15:52,691 INFO L138 Inliner]: procedures = 176, calls = 54, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 152 [2023-08-04 06:15:52,692 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-04 06:15:52,693 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-04 06:15:52,693 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-04 06:15:52,693 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-04 06:15:52,703 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 06:15:52" (1/1) ... [2023-08-04 06:15:52,704 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 06:15:52" (1/1) ... [2023-08-04 06:15:52,707 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 06:15:52" (1/1) ... [2023-08-04 06:15:52,708 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 06:15:52" (1/1) ... [2023-08-04 06:15:52,716 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 06:15:52" (1/1) ... [2023-08-04 06:15:52,720 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 06:15:52" (1/1) ... [2023-08-04 06:15:52,722 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 06:15:52" (1/1) ... [2023-08-04 06:15:52,723 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 06:15:52" (1/1) ... [2023-08-04 06:15:52,726 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-04 06:15:52,727 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-04 06:15:52,727 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-04 06:15:52,728 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-04 06:15:52,728 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 06:15:52" (1/1) ... [2023-08-04 06:15:52,738 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-04 06:15:52,750 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 06:15:52,765 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-04 06:15:52,767 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-04 06:15:52,793 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-04 06:15:52,793 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-04 06:15:52,793 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-04 06:15:52,793 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-04 06:15:52,793 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-04 06:15:52,793 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-08-04 06:15:52,793 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-08-04 06:15:52,794 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-08-04 06:15:52,794 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-08-04 06:15:52,794 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-08-04 06:15:52,794 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-08-04 06:15:52,794 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-04 06:15:52,794 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-04 06:15:52,794 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-04 06:15:52,794 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-04 06:15:52,796 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-04 06:15:52,906 INFO L236 CfgBuilder]: Building ICFG [2023-08-04 06:15:52,908 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-04 06:15:53,220 INFO L277 CfgBuilder]: Performing block encoding [2023-08-04 06:15:53,328 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-04 06:15:53,328 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2023-08-04 06:15:53,330 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.08 06:15:53 BoogieIcfgContainer [2023-08-04 06:15:53,330 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-04 06:15:53,332 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-04 06:15:53,332 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-04 06:15:53,335 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-04 06:15:53,336 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.08 06:15:52" (1/3) ... [2023-08-04 06:15:53,337 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2081ce5a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.08 06:15:53, skipping insertion in model container [2023-08-04 06:15:53,337 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 06:15:52" (2/3) ... [2023-08-04 06:15:53,338 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2081ce5a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.08 06:15:53, skipping insertion in model container [2023-08-04 06:15:53,338 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.08 06:15:53" (3/3) ... [2023-08-04 06:15:53,339 INFO L112 eAbstractionObserver]: Analyzing ICFG pthread-wmm_mix052_pso.opt_rmo.opt_tso.opt_bound2.i [2023-08-04 06:15:53,348 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-04 06:15:53,357 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-04 06:15:53,357 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-08-04 06:15:53,357 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-04 06:15:53,422 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-04 06:15:53,465 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 129 places, 127 transitions, 269 flow [2023-08-04 06:15:53,644 INFO L124 PetriNetUnfolderBase]: 30/448 cut-off events. [2023-08-04 06:15:53,645 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 06:15:53,659 INFO L83 FinitePrefix]: Finished finitePrefix Result has 473 conditions, 448 events. 30/448 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 1965 event pairs, 0 based on Foata normal form. 0/392 useless extension candidates. Maximal degree in co-relation 265. Up to 16 conditions per place. [2023-08-04 06:15:53,659 INFO L82 GeneralOperation]: Start removeDead. Operand has 129 places, 127 transitions, 269 flow [2023-08-04 06:15:53,669 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 127 places, 125 transitions, 261 flow [2023-08-04 06:15:53,672 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-04 06:15:53,687 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 127 places, 125 transitions, 261 flow [2023-08-04 06:15:53,690 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 127 places, 125 transitions, 261 flow [2023-08-04 06:15:53,690 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 127 places, 125 transitions, 261 flow [2023-08-04 06:15:53,744 INFO L124 PetriNetUnfolderBase]: 30/445 cut-off events. [2023-08-04 06:15:53,744 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 06:15:53,747 INFO L83 FinitePrefix]: Finished finitePrefix Result has 467 conditions, 445 events. 30/445 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 1955 event pairs, 0 based on Foata normal form. 0/389 useless extension candidates. Maximal degree in co-relation 259. Up to 16 conditions per place. [2023-08-04 06:15:53,753 INFO L119 LiptonReduction]: Number of co-enabled transitions 2328 [2023-08-04 06:15:57,032 INFO L134 LiptonReduction]: Checked pairs total: 5307 [2023-08-04 06:15:57,032 INFO L136 LiptonReduction]: Total number of compositions: 110 [2023-08-04 06:15:57,048 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-04 06:15:57,053 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;@39ee53a7, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-04 06:15:57,054 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-08-04 06:15:57,058 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-04 06:15:57,058 INFO L124 PetriNetUnfolderBase]: 1/23 cut-off events. [2023-08-04 06:15:57,058 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 06:15:57,058 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 06:15:57,059 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-04 06:15:57,059 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P2Err0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 06:15:57,063 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 06:15:57,063 INFO L85 PathProgramCache]: Analyzing trace with hash -1259175069, now seen corresponding path program 1 times [2023-08-04 06:15:57,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 06:15:57,071 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2137240436] [2023-08-04 06:15:57,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 06:15:57,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 06:15:57,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 06:15:57,323 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 06:15:57,324 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 06:15:57,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2137240436] [2023-08-04 06:15:57,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2137240436] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 06:15:57,325 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 06:15:57,325 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-04 06:15:57,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037783679] [2023-08-04 06:15:57,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 06:15:57,334 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 06:15:57,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 06:15:57,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 06:15:57,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-04 06:15:57,384 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 237 [2023-08-04 06:15:57,388 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 29 transitions, 69 flow. Second operand has 3 states, 3 states have (on average 111.0) internal successors, (333), 3 states have internal predecessors, (333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 06:15:57,389 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 06:15:57,389 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 237 [2023-08-04 06:15:57,390 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 06:15:57,657 INFO L124 PetriNetUnfolderBase]: 1189/1930 cut-off events. [2023-08-04 06:15:57,657 INFO L125 PetriNetUnfolderBase]: For 9/9 co-relation queries the response was YES. [2023-08-04 06:15:57,662 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3839 conditions, 1930 events. 1189/1930 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 9877 event pairs, 967 based on Foata normal form. 0/1606 useless extension candidates. Maximal degree in co-relation 3826. Up to 1853 conditions per place. [2023-08-04 06:15:57,672 INFO L140 encePairwiseOnDemand]: 233/237 looper letters, 25 selfloop transitions, 2 changer transitions 1/31 dead transitions. [2023-08-04 06:15:57,672 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 31 transitions, 129 flow [2023-08-04 06:15:57,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 06:15:57,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 06:15:57,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 357 transitions. [2023-08-04 06:15:57,684 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5021097046413502 [2023-08-04 06:15:57,685 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 357 transitions. [2023-08-04 06:15:57,685 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 357 transitions. [2023-08-04 06:15:57,686 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 06:15:57,688 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 357 transitions. [2023-08-04 06:15:57,692 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 119.0) internal successors, (357), 3 states have internal predecessors, (357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 06:15:57,696 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 237.0) internal successors, (948), 4 states have internal predecessors, (948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 06:15:57,697 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 237.0) internal successors, (948), 4 states have internal predecessors, (948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 06:15:57,698 INFO L175 Difference]: Start difference. First operand has 35 places, 29 transitions, 69 flow. Second operand 3 states and 357 transitions. [2023-08-04 06:15:57,699 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 31 transitions, 129 flow [2023-08-04 06:15:57,701 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 31 transitions, 129 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-04 06:15:57,702 INFO L231 Difference]: Finished difference. Result has 38 places, 28 transitions, 75 flow [2023-08-04 06:15:57,704 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=237, PETRI_DIFFERENCE_MINUEND_FLOW=67, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=75, PETRI_PLACES=38, PETRI_TRANSITIONS=28} [2023-08-04 06:15:57,706 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 3 predicate places. [2023-08-04 06:15:57,707 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 28 transitions, 75 flow [2023-08-04 06:15:57,707 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 111.0) internal successors, (333), 3 states have internal predecessors, (333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 06:15:57,707 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 06:15:57,707 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 06:15:57,707 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-04 06:15:57,708 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 06:15:57,708 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 06:15:57,708 INFO L85 PathProgramCache]: Analyzing trace with hash 1380687159, now seen corresponding path program 1 times [2023-08-04 06:15:57,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 06:15:57,709 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1770990939] [2023-08-04 06:15:57,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 06:15:57,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 06:15:57,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 06:15:57,832 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 06:15:57,833 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 06:15:57,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1770990939] [2023-08-04 06:15:57,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1770990939] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 06:15:57,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [183903393] [2023-08-04 06:15:57,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 06:15:57,834 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 06:15:57,834 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 06:15:57,841 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-04 06:15:57,849 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-04 06:15:57,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 06:15:57,969 INFO L262 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-04 06:15:57,973 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 06:15:57,989 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-04 06:15:57,990 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-04 06:15:57,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [183903393] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 06:15:57,990 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-04 06:15:57,991 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-08-04 06:15:57,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270568670] [2023-08-04 06:15:57,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 06:15:57,992 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 06:15:57,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 06:15:57,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 06:15:57,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-04 06:15:58,006 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 237 [2023-08-04 06:15:58,007 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 28 transitions, 75 flow. Second operand has 3 states, 3 states have (on average 112.0) internal successors, (336), 3 states have internal predecessors, (336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 06:15:58,008 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 06:15:58,008 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 237 [2023-08-04 06:15:58,008 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 06:15:58,238 INFO L124 PetriNetUnfolderBase]: 1035/1677 cut-off events. [2023-08-04 06:15:58,239 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-04 06:15:58,241 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3318 conditions, 1677 events. 1035/1677 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 8303 event pairs, 636 based on Foata normal form. 0/1436 useless extension candidates. Maximal degree in co-relation 3302. Up to 1551 conditions per place. [2023-08-04 06:15:58,248 INFO L140 encePairwiseOnDemand]: 234/237 looper letters, 28 selfloop transitions, 2 changer transitions 1/34 dead transitions. [2023-08-04 06:15:58,250 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 34 transitions, 149 flow [2023-08-04 06:15:58,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 06:15:58,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 06:15:58,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 359 transitions. [2023-08-04 06:15:58,259 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5049226441631505 [2023-08-04 06:15:58,259 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 359 transitions. [2023-08-04 06:15:58,259 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 359 transitions. [2023-08-04 06:15:58,260 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 06:15:58,260 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 359 transitions. [2023-08-04 06:15:58,262 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 119.66666666666667) internal successors, (359), 3 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 06:15:58,264 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 237.0) internal successors, (948), 4 states have internal predecessors, (948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 06:15:58,265 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 237.0) internal successors, (948), 4 states have internal predecessors, (948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 06:15:58,265 INFO L175 Difference]: Start difference. First operand has 38 places, 28 transitions, 75 flow. Second operand 3 states and 359 transitions. [2023-08-04 06:15:58,265 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 34 transitions, 149 flow [2023-08-04 06:15:58,266 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 34 transitions, 145 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-04 06:15:58,267 INFO L231 Difference]: Finished difference. Result has 39 places, 28 transitions, 79 flow [2023-08-04 06:15:58,267 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=237, PETRI_DIFFERENCE_MINUEND_FLOW=71, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=79, PETRI_PLACES=39, PETRI_TRANSITIONS=28} [2023-08-04 06:15:58,268 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 4 predicate places. [2023-08-04 06:15:58,268 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 28 transitions, 79 flow [2023-08-04 06:15:58,268 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 112.0) internal successors, (336), 3 states have internal predecessors, (336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 06:15:58,269 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 06:15:58,269 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 06:15:58,283 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-04 06:15:58,478 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 06:15:58,478 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 06:15:58,479 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 06:15:58,479 INFO L85 PathProgramCache]: Analyzing trace with hash -1538118602, now seen corresponding path program 1 times [2023-08-04 06:15:58,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 06:15:58,479 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2028442376] [2023-08-04 06:15:58,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 06:15:58,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 06:15:58,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 06:15:58,583 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-04 06:15:58,584 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 06:15:58,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2028442376] [2023-08-04 06:15:58,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2028442376] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 06:15:58,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2068004872] [2023-08-04 06:15:58,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 06:15:58,588 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 06:15:58,588 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 06:15:58,589 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-04 06:15:58,596 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-04 06:15:58,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 06:15:58,674 INFO L262 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-04 06:15:58,675 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 06:15:58,685 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-04 06:15:58,685 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-04 06:15:58,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2068004872] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 06:15:58,685 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-04 06:15:58,685 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-08-04 06:15:58,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422336973] [2023-08-04 06:15:58,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 06:15:58,686 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 06:15:58,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 06:15:58,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 06:15:58,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-04 06:15:58,695 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 237 [2023-08-04 06:15:58,696 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 28 transitions, 79 flow. Second operand has 3 states, 3 states have (on average 113.0) internal successors, (339), 3 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 06:15:58,696 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 06:15:58,696 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 237 [2023-08-04 06:15:58,696 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 06:15:58,868 INFO L124 PetriNetUnfolderBase]: 967/1537 cut-off events. [2023-08-04 06:15:58,868 INFO L125 PetriNetUnfolderBase]: For 21/21 co-relation queries the response was YES. [2023-08-04 06:15:58,871 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3146 conditions, 1537 events. 967/1537 cut-off events. For 21/21 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 7735 event pairs, 560 based on Foata normal form. 0/1332 useless extension candidates. Maximal degree in co-relation 3130. Up to 1262 conditions per place. [2023-08-04 06:15:58,878 INFO L140 encePairwiseOnDemand]: 234/237 looper letters, 33 selfloop transitions, 2 changer transitions 0/38 dead transitions. [2023-08-04 06:15:58,878 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 38 transitions, 169 flow [2023-08-04 06:15:58,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 06:15:58,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 06:15:58,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 363 transitions. [2023-08-04 06:15:58,880 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.510548523206751 [2023-08-04 06:15:58,880 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 363 transitions. [2023-08-04 06:15:58,880 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 363 transitions. [2023-08-04 06:15:58,880 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 06:15:58,881 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 363 transitions. [2023-08-04 06:15:58,881 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 121.0) internal successors, (363), 3 states have internal predecessors, (363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 06:15:58,883 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 237.0) internal successors, (948), 4 states have internal predecessors, (948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 06:15:58,883 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 237.0) internal successors, (948), 4 states have internal predecessors, (948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 06:15:58,883 INFO L175 Difference]: Start difference. First operand has 39 places, 28 transitions, 79 flow. Second operand 3 states and 363 transitions. [2023-08-04 06:15:58,883 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 38 transitions, 169 flow [2023-08-04 06:15:58,885 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 38 transitions, 165 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-04 06:15:58,886 INFO L231 Difference]: Finished difference. Result has 40 places, 28 transitions, 83 flow [2023-08-04 06:15:58,886 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=237, PETRI_DIFFERENCE_MINUEND_FLOW=75, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=83, PETRI_PLACES=40, PETRI_TRANSITIONS=28} [2023-08-04 06:15:58,887 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 5 predicate places. [2023-08-04 06:15:58,888 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 28 transitions, 83 flow [2023-08-04 06:15:58,888 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 113.0) internal successors, (339), 3 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 06:15:58,888 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 06:15:58,888 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 06:15:58,899 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-04 06:15:59,094 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2023-08-04 06:15:59,094 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting P2Err0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 06:15:59,095 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 06:15:59,095 INFO L85 PathProgramCache]: Analyzing trace with hash -1538135194, now seen corresponding path program 1 times [2023-08-04 06:15:59,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 06:15:59,095 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [854319824] [2023-08-04 06:15:59,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 06:15:59,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 06:15:59,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 06:15:59,168 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-04 06:15:59,168 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 06:15:59,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [854319824] [2023-08-04 06:15:59,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [854319824] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 06:15:59,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2078826528] [2023-08-04 06:15:59,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 06:15:59,169 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 06:15:59,169 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 06:15:59,170 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-04 06:15:59,193 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-04 06:15:59,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 06:15:59,261 INFO L262 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-04 06:15:59,263 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 06:15:59,295 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-04 06:15:59,295 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-04 06:15:59,314 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-04 06:15:59,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2078826528] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-04 06:15:59,314 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-04 06:15:59,314 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 4 [2023-08-04 06:15:59,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947735804] [2023-08-04 06:15:59,315 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-04 06:15:59,315 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-04 06:15:59,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 06:15:59,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-04 06:15:59,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-04 06:15:59,331 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 237 [2023-08-04 06:15:59,332 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 28 transitions, 83 flow. Second operand has 5 states, 5 states have (on average 111.2) internal successors, (556), 5 states have internal predecessors, (556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 06:15:59,332 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 06:15:59,332 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 237 [2023-08-04 06:15:59,332 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 06:15:59,362 INFO L124 PetriNetUnfolderBase]: 4/16 cut-off events. [2023-08-04 06:15:59,362 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-08-04 06:15:59,364 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45 conditions, 16 events. 4/16 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 19 event pairs, 1 based on Foata normal form. 3/19 useless extension candidates. Maximal degree in co-relation 36. Up to 10 conditions per place. [2023-08-04 06:15:59,364 INFO L140 encePairwiseOnDemand]: 234/237 looper letters, 0 selfloop transitions, 0 changer transitions 10/10 dead transitions. [2023-08-04 06:15:59,364 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 19 places, 10 transitions, 43 flow [2023-08-04 06:15:59,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-04 06:15:59,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-04 06:15:59,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 442 transitions. [2023-08-04 06:15:59,366 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46624472573839665 [2023-08-04 06:15:59,366 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 442 transitions. [2023-08-04 06:15:59,366 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 442 transitions. [2023-08-04 06:15:59,367 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 06:15:59,367 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 442 transitions. [2023-08-04 06:15:59,368 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 110.5) internal successors, (442), 4 states have internal predecessors, (442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 06:15:59,369 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 237.0) internal successors, (1185), 5 states have internal predecessors, (1185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 06:15:59,370 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 237.0) internal successors, (1185), 5 states have internal predecessors, (1185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 06:15:59,370 INFO L175 Difference]: Start difference. First operand has 40 places, 28 transitions, 83 flow. Second operand 4 states and 442 transitions. [2023-08-04 06:15:59,370 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 19 places, 10 transitions, 43 flow [2023-08-04 06:15:59,371 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 18 places, 10 transitions, 41 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-04 06:15:59,371 INFO L231 Difference]: Finished difference. Result has 18 places, 0 transitions, 0 flow [2023-08-04 06:15:59,372 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=237, PETRI_DIFFERENCE_MINUEND_FLOW=17, PETRI_DIFFERENCE_MINUEND_PLACES=15, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=7, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=7, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=18, PETRI_TRANSITIONS=0} [2023-08-04 06:15:59,373 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, -17 predicate places. [2023-08-04 06:15:59,373 INFO L495 AbstractCegarLoop]: Abstraction has has 18 places, 0 transitions, 0 flow [2023-08-04 06:15:59,374 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 111.2) internal successors, (556), 5 states have internal predecessors, (556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 06:15:59,376 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P2Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2023-08-04 06:15:59,377 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 3 remaining) [2023-08-04 06:15:59,377 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P2Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 3 remaining) [2023-08-04 06:15:59,386 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-04 06:15:59,586 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 06:15:59,586 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2023-08-04 06:15:59,588 INFO L307 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was SAFE,SAFE,SAFE (1/2) [2023-08-04 06:15:59,592 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 129 places, 127 transitions, 269 flow [2023-08-04 06:15:59,625 INFO L124 PetriNetUnfolderBase]: 30/448 cut-off events. [2023-08-04 06:15:59,626 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 06:15:59,627 INFO L83 FinitePrefix]: Finished finitePrefix Result has 473 conditions, 448 events. 30/448 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 1965 event pairs, 0 based on Foata normal form. 0/392 useless extension candidates. Maximal degree in co-relation 265. Up to 16 conditions per place. [2023-08-04 06:15:59,627 INFO L82 GeneralOperation]: Start removeDead. Operand has 129 places, 127 transitions, 269 flow [2023-08-04 06:15:59,628 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 103 places, 98 transitions, 211 flow [2023-08-04 06:15:59,628 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-04 06:15:59,628 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 103 places, 98 transitions, 211 flow [2023-08-04 06:15:59,628 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 103 places, 98 transitions, 211 flow [2023-08-04 06:15:59,628 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 103 places, 98 transitions, 211 flow [2023-08-04 06:15:59,643 INFO L124 PetriNetUnfolderBase]: 6/216 cut-off events. [2023-08-04 06:15:59,644 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 06:15:59,644 INFO L83 FinitePrefix]: Finished finitePrefix Result has 241 conditions, 216 events. 6/216 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 629 event pairs, 0 based on Foata normal form. 0/200 useless extension candidates. Maximal degree in co-relation 149. Up to 8 conditions per place. [2023-08-04 06:15:59,645 INFO L119 LiptonReduction]: Number of co-enabled transitions 1204 [2023-08-04 06:16:02,295 INFO L134 LiptonReduction]: Checked pairs total: 2650 [2023-08-04 06:16:02,295 INFO L136 LiptonReduction]: Total number of compositions: 79 [2023-08-04 06:16:02,297 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-04 06:16:02,297 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;@39ee53a7, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-04 06:16:02,297 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-08-04 06:16:02,300 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-04 06:16:02,300 INFO L124 PetriNetUnfolderBase]: 0/19 cut-off events. [2023-08-04 06:16:02,300 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 06:16:02,300 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 06:16:02,300 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-04 06:16:02,300 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-04 06:16:02,301 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 06:16:02,301 INFO L85 PathProgramCache]: Analyzing trace with hash 1102639352, now seen corresponding path program 1 times [2023-08-04 06:16:02,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 06:16:02,301 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1115100217] [2023-08-04 06:16:02,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 06:16:02,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 06:16:02,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-04 06:16:02,318 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-04 06:16:02,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-04 06:16:02,349 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-04 06:16:02,349 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-04 06:16:02,349 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 3 remaining) [2023-08-04 06:16:02,349 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2023-08-04 06:16:02,350 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2023-08-04 06:16:02,350 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-04 06:16:02,350 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-04 06:16:02,353 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE,UNKNOWN,UNKNOWN (2/2) [2023-08-04 06:16:02,353 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-04 06:16:02,353 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-04 06:16:02,378 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-04 06:16:02,382 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 158 places, 150 transitions, 336 flow [2023-08-04 06:16:02,502 INFO L124 PetriNetUnfolderBase]: 93/1385 cut-off events. [2023-08-04 06:16:02,502 INFO L125 PetriNetUnfolderBase]: For 26/26 co-relation queries the response was YES. [2023-08-04 06:16:02,508 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1483 conditions, 1385 events. 93/1385 cut-off events. For 26/26 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 9544 event pairs, 0 based on Foata normal form. 0/1208 useless extension candidates. Maximal degree in co-relation 999. Up to 54 conditions per place. [2023-08-04 06:16:02,508 INFO L82 GeneralOperation]: Start removeDead. Operand has 158 places, 150 transitions, 336 flow [2023-08-04 06:16:02,512 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 156 places, 148 transitions, 324 flow [2023-08-04 06:16:02,512 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-04 06:16:02,513 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 156 places, 148 transitions, 324 flow [2023-08-04 06:16:02,513 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 156 places, 148 transitions, 324 flow [2023-08-04 06:16:02,513 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 156 places, 148 transitions, 324 flow [2023-08-04 06:16:02,628 INFO L124 PetriNetUnfolderBase]: 93/1381 cut-off events. [2023-08-04 06:16:02,629 INFO L125 PetriNetUnfolderBase]: For 22/22 co-relation queries the response was YES. [2023-08-04 06:16:02,634 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1471 conditions, 1381 events. 93/1381 cut-off events. For 22/22 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 9481 event pairs, 0 based on Foata normal form. 0/1204 useless extension candidates. Maximal degree in co-relation 990. Up to 54 conditions per place. [2023-08-04 06:16:02,658 INFO L119 LiptonReduction]: Number of co-enabled transitions 5568 [2023-08-04 06:16:05,835 INFO L134 LiptonReduction]: Checked pairs total: 15027 [2023-08-04 06:16:05,836 INFO L136 LiptonReduction]: Total number of compositions: 117 [2023-08-04 06:16:05,837 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-04 06:16:05,838 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;@39ee53a7, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-04 06:16:05,838 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-08-04 06:16:05,841 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-04 06:16:05,841 INFO L124 PetriNetUnfolderBase]: 1/24 cut-off events. [2023-08-04 06:16:05,841 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-04 06:16:05,841 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 06:16:05,841 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-04 06:16:05,841 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P2Err0ASSERT_VIOLATIONERROR_FUNCTION, P2Err0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-08-04 06:16:05,842 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 06:16:05,842 INFO L85 PathProgramCache]: Analyzing trace with hash 1096709172, now seen corresponding path program 1 times [2023-08-04 06:16:05,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 06:16:05,842 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2070335557] [2023-08-04 06:16:05,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 06:16:05,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 06:16:05,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 06:16:05,865 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 06:16:05,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 06:16:05,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2070335557] [2023-08-04 06:16:05,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2070335557] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 06:16:05,866 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 06:16:05,866 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-04 06:16:05,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319960507] [2023-08-04 06:16:05,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 06:16:05,867 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 06:16:05,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 06:16:05,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 06:16:05,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-04 06:16:05,876 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 267 [2023-08-04 06:16:05,877 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 46 transitions, 120 flow. Second operand has 3 states, 3 states have (on average 127.0) internal successors, (381), 3 states have internal predecessors, (381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 06:16:05,877 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 06:16:05,877 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 267 [2023-08-04 06:16:05,877 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 06:16:28,484 INFO L124 PetriNetUnfolderBase]: 206750/270999 cut-off events. [2023-08-04 06:16:28,484 INFO L125 PetriNetUnfolderBase]: For 4545/4545 co-relation queries the response was YES. [2023-08-04 06:16:29,073 INFO L83 FinitePrefix]: Finished finitePrefix Result has 538682 conditions, 270999 events. 206750/270999 cut-off events. For 4545/4545 co-relation queries the response was YES. Maximal size of possible extension queue 7393. Compared 1794766 event pairs, 169944 based on Foata normal form. 0/233753 useless extension candidates. Maximal degree in co-relation 155017. Up to 261960 conditions per place. [2023-08-04 06:16:30,346 INFO L140 encePairwiseOnDemand]: 263/267 looper letters, 39 selfloop transitions, 2 changer transitions 0/49 dead transitions. [2023-08-04 06:16:30,346 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 49 transitions, 208 flow [2023-08-04 06:16:30,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 06:16:30,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 06:16:30,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 418 transitions. [2023-08-04 06:16:30,348 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5218476903870163 [2023-08-04 06:16:30,348 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 418 transitions. [2023-08-04 06:16:30,348 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 418 transitions. [2023-08-04 06:16:30,349 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 06:16:30,349 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 418 transitions. [2023-08-04 06:16:30,350 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 139.33333333333334) internal successors, (418), 3 states have internal predecessors, (418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 06:16:30,352 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 267.0) internal successors, (1068), 4 states have internal predecessors, (1068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 06:16:30,353 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 267.0) internal successors, (1068), 4 states have internal predecessors, (1068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 06:16:30,353 INFO L175 Difference]: Start difference. First operand has 58 places, 46 transitions, 120 flow. Second operand 3 states and 418 transitions. [2023-08-04 06:16:30,353 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 49 transitions, 208 flow [2023-08-04 06:16:30,364 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 49 transitions, 206 flow, removed 1 selfloop flow, removed 0 redundant places. [2023-08-04 06:16:30,366 INFO L231 Difference]: Finished difference. Result has 61 places, 46 transitions, 128 flow [2023-08-04 06:16:30,366 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=267, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=128, PETRI_PLACES=61, PETRI_TRANSITIONS=46} [2023-08-04 06:16:30,368 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 3 predicate places. [2023-08-04 06:16:30,368 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 46 transitions, 128 flow [2023-08-04 06:16:30,369 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 127.0) internal successors, (381), 3 states have internal predecessors, (381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 06:16:30,369 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 06:16:30,369 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 06:16:30,369 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-04 06:16:30,369 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting P2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P2Err0ASSERT_VIOLATIONERROR_FUNCTION, P2Err0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-08-04 06:16:30,370 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 06:16:30,370 INFO L85 PathProgramCache]: Analyzing trace with hash 954736459, now seen corresponding path program 1 times [2023-08-04 06:16:30,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 06:16:30,370 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1486134671] [2023-08-04 06:16:30,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 06:16:30,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 06:16:30,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 06:16:30,426 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 06:16:30,426 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 06:16:30,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1486134671] [2023-08-04 06:16:30,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1486134671] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 06:16:30,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [227482358] [2023-08-04 06:16:30,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 06:16:30,427 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 06:16:30,427 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 06:16:30,429 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-04 06:16:30,431 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-04 06:16:30,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 06:16:30,521 INFO L262 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-04 06:16:30,522 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 06:16:30,528 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-04 06:16:30,528 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-04 06:16:30,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [227482358] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 06:16:30,529 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-04 06:16:30,529 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-08-04 06:16:30,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44654025] [2023-08-04 06:16:30,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 06:16:30,529 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 06:16:30,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 06:16:30,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 06:16:30,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-04 06:16:30,539 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 267 [2023-08-04 06:16:30,540 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 46 transitions, 128 flow. Second operand has 3 states, 3 states have (on average 128.0) internal successors, (384), 3 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 06:16:30,540 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 06:16:30,540 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 267 [2023-08-04 06:16:30,540 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 06:16:51,469 INFO L124 PetriNetUnfolderBase]: 200318/264836 cut-off events. [2023-08-04 06:16:51,469 INFO L125 PetriNetUnfolderBase]: For 3531/3531 co-relation queries the response was YES. [2023-08-04 06:16:52,065 INFO L83 FinitePrefix]: Finished finitePrefix Result has 523033 conditions, 264836 events. 200318/264836 cut-off events. For 3531/3531 co-relation queries the response was YES. Maximal size of possible extension queue 7661. Compared 1791156 event pairs, 160850 based on Foata normal form. 0/230851 useless extension candidates. Maximal degree in co-relation 522996. Up to 252785 conditions per place. [2023-08-04 06:16:53,020 INFO L140 encePairwiseOnDemand]: 264/267 looper letters, 45 selfloop transitions, 2 changer transitions 0/55 dead transitions. [2023-08-04 06:16:53,020 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 55 transitions, 240 flow [2023-08-04 06:16:53,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 06:16:53,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 06:16:53,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 422 transitions. [2023-08-04 06:16:53,027 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5268414481897628 [2023-08-04 06:16:53,028 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 422 transitions. [2023-08-04 06:16:53,028 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 422 transitions. [2023-08-04 06:16:53,029 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 06:16:53,029 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 422 transitions. [2023-08-04 06:16:53,032 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 140.66666666666666) internal successors, (422), 3 states have internal predecessors, (422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 06:16:53,035 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 267.0) internal successors, (1068), 4 states have internal predecessors, (1068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 06:16:53,035 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 267.0) internal successors, (1068), 4 states have internal predecessors, (1068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 06:16:53,036 INFO L175 Difference]: Start difference. First operand has 61 places, 46 transitions, 128 flow. Second operand 3 states and 422 transitions. [2023-08-04 06:16:53,036 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 55 transitions, 240 flow [2023-08-04 06:16:53,038 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 55 transitions, 238 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-04 06:16:53,039 INFO L231 Difference]: Finished difference. Result has 63 places, 47 transitions, 138 flow [2023-08-04 06:16:53,039 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=267, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=138, PETRI_PLACES=63, PETRI_TRANSITIONS=47} [2023-08-04 06:16:53,040 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 5 predicate places. [2023-08-04 06:16:53,041 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 47 transitions, 138 flow [2023-08-04 06:16:53,041 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 128.0) internal successors, (384), 3 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 06:16:53,041 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 06:16:53,041 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 06:16:53,049 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-04 06:16:53,245 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 06:16:53,246 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P2Err0ASSERT_VIOLATIONERROR_FUNCTION, P2Err0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-08-04 06:16:53,246 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 06:16:53,246 INFO L85 PathProgramCache]: Analyzing trace with hash 1250280287, now seen corresponding path program 1 times [2023-08-04 06:16:53,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 06:16:53,247 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [947364537] [2023-08-04 06:16:53,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 06:16:53,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 06:16:53,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 06:16:53,303 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-04 06:16:53,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 06:16:53,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [947364537] [2023-08-04 06:16:53,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [947364537] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 06:16:53,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1212282413] [2023-08-04 06:16:53,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 06:16:53,303 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 06:16:53,304 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 06:16:53,305 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-04 06:16:53,307 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-04 06:16:53,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 06:16:53,406 INFO L262 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-04 06:16:53,407 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 06:16:53,418 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-04 06:16:53,418 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-04 06:16:53,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1212282413] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 06:16:53,419 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-04 06:16:53,419 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-08-04 06:16:53,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025375126] [2023-08-04 06:16:53,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 06:16:53,419 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 06:16:53,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 06:16:53,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 06:16:53,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-04 06:16:53,429 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 267 [2023-08-04 06:16:53,430 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 47 transitions, 138 flow. Second operand has 3 states, 3 states have (on average 129.0) internal successors, (387), 3 states have internal predecessors, (387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 06:16:53,430 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 06:16:53,430 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 267 [2023-08-04 06:16:53,430 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 06:17:14,264 INFO L124 PetriNetUnfolderBase]: 197902/260926 cut-off events. [2023-08-04 06:17:14,264 INFO L125 PetriNetUnfolderBase]: For 1817/1817 co-relation queries the response was YES. [2023-08-04 06:17:15,064 INFO L83 FinitePrefix]: Finished finitePrefix Result has 516525 conditions, 260926 events. 197902/260926 cut-off events. For 1817/1817 co-relation queries the response was YES. Maximal size of possible extension queue 7713. Compared 1759595 event pairs, 154314 based on Foata normal form. 0/228042 useless extension candidates. Maximal degree in co-relation 149208. Up to 243657 conditions per place. [2023-08-04 06:17:16,375 INFO L140 encePairwiseOnDemand]: 264/267 looper letters, 53 selfloop transitions, 2 changer transitions 0/63 dead transitions. [2023-08-04 06:17:16,376 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 63 transitions, 280 flow [2023-08-04 06:17:16,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 06:17:16,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 06:17:16,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 429 transitions. [2023-08-04 06:17:16,378 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5355805243445693 [2023-08-04 06:17:16,378 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 429 transitions. [2023-08-04 06:17:16,378 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 429 transitions. [2023-08-04 06:17:16,378 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 06:17:16,378 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 429 transitions. [2023-08-04 06:17:16,379 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 143.0) internal successors, (429), 3 states have internal predecessors, (429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 06:17:16,381 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 267.0) internal successors, (1068), 4 states have internal predecessors, (1068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 06:17:16,381 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 267.0) internal successors, (1068), 4 states have internal predecessors, (1068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 06:17:16,381 INFO L175 Difference]: Start difference. First operand has 63 places, 47 transitions, 138 flow. Second operand 3 states and 429 transitions. [2023-08-04 06:17:16,381 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 63 transitions, 280 flow [2023-08-04 06:17:16,382 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 63 transitions, 278 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-04 06:17:16,383 INFO L231 Difference]: Finished difference. Result has 65 places, 48 transitions, 148 flow [2023-08-04 06:17:16,383 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=267, PETRI_DIFFERENCE_MINUEND_FLOW=136, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=148, PETRI_PLACES=65, PETRI_TRANSITIONS=48} [2023-08-04 06:17:16,384 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 7 predicate places. [2023-08-04 06:17:16,384 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 48 transitions, 148 flow [2023-08-04 06:17:16,384 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 129.0) internal successors, (387), 3 states have internal predecessors, (387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 06:17:16,384 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 06:17:16,384 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 06:17:16,393 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-08-04 06:17:16,591 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 06:17:16,591 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting P2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P2Err0ASSERT_VIOLATIONERROR_FUNCTION, P2Err0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-08-04 06:17:16,591 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 06:17:16,591 INFO L85 PathProgramCache]: Analyzing trace with hash 1250268226, now seen corresponding path program 1 times [2023-08-04 06:17:16,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 06:17:16,592 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [400641788] [2023-08-04 06:17:16,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 06:17:16,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 06:17:16,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 06:17:16,642 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-04 06:17:16,642 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 06:17:16,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [400641788] [2023-08-04 06:17:16,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [400641788] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 06:17:16,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2029329649] [2023-08-04 06:17:16,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 06:17:16,643 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 06:17:16,643 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 06:17:16,644 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-04 06:17:16,645 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-08-04 06:17:17,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 06:17:17,062 INFO L262 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-04 06:17:17,063 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 06:17:17,077 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-04 06:17:17,077 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-04 06:17:17,091 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-04 06:17:17,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2029329649] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-04 06:17:17,092 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-04 06:17:17,092 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 4 [2023-08-04 06:17:17,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366503116] [2023-08-04 06:17:17,092 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-04 06:17:17,092 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-04 06:17:17,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 06:17:17,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-04 06:17:17,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-04 06:17:17,105 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 124 out of 267 [2023-08-04 06:17:17,106 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 48 transitions, 148 flow. Second operand has 5 states, 5 states have (on average 127.2) internal successors, (636), 5 states have internal predecessors, (636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 06:17:17,106 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 06:17:17,106 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 124 of 267 [2023-08-04 06:17:17,107 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 06:17:32,919 INFO L124 PetriNetUnfolderBase]: 154888/200180 cut-off events. [2023-08-04 06:17:32,919 INFO L125 PetriNetUnfolderBase]: For 13704/13704 co-relation queries the response was YES. [2023-08-04 06:17:33,449 INFO L83 FinitePrefix]: Finished finitePrefix Result has 410024 conditions, 200180 events. 154888/200180 cut-off events. For 13704/13704 co-relation queries the response was YES. Maximal size of possible extension queue 6262. Compared 1250632 event pairs, 103236 based on Foata normal form. 3/178978 useless extension candidates. Maximal degree in co-relation 145264. Up to 193594 conditions per place. [2023-08-04 06:17:34,234 INFO L140 encePairwiseOnDemand]: 263/267 looper letters, 44 selfloop transitions, 3 changer transitions 1/56 dead transitions. [2023-08-04 06:17:34,234 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 56 transitions, 260 flow [2023-08-04 06:17:34,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-04 06:17:34,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-04 06:17:34,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 543 transitions. [2023-08-04 06:17:34,236 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5084269662921348 [2023-08-04 06:17:34,236 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 543 transitions. [2023-08-04 06:17:34,236 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 543 transitions. [2023-08-04 06:17:34,236 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 06:17:34,236 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 543 transitions. [2023-08-04 06:17:34,238 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 135.75) internal successors, (543), 4 states have internal predecessors, (543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 06:17:34,239 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 267.0) internal successors, (1335), 5 states have internal predecessors, (1335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 06:17:34,240 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 267.0) internal successors, (1335), 5 states have internal predecessors, (1335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 06:17:34,240 INFO L175 Difference]: Start difference. First operand has 65 places, 48 transitions, 148 flow. Second operand 4 states and 543 transitions. [2023-08-04 06:17:34,240 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 56 transitions, 260 flow [2023-08-04 06:17:34,254 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 56 transitions, 258 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-04 06:17:34,255 INFO L231 Difference]: Finished difference. Result has 69 places, 48 transitions, 160 flow [2023-08-04 06:17:34,255 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=267, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=160, PETRI_PLACES=69, PETRI_TRANSITIONS=48} [2023-08-04 06:17:34,255 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 11 predicate places. [2023-08-04 06:17:34,256 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 48 transitions, 160 flow [2023-08-04 06:17:34,256 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 127.2) internal successors, (636), 5 states have internal predecessors, (636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 06:17:34,256 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 06:17:34,256 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 06:17:34,263 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-08-04 06:17:34,462 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 06:17:34,462 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting P2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P2Err0ASSERT_VIOLATIONERROR_FUNCTION, P2Err0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-08-04 06:17:34,462 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 06:17:34,463 INFO L85 PathProgramCache]: Analyzing trace with hash -1190404680, now seen corresponding path program 1 times [2023-08-04 06:17:34,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 06:17:34,463 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [811141681] [2023-08-04 06:17:34,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 06:17:34,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 06:17:34,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 06:17:34,524 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-04 06:17:34,524 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 06:17:34,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [811141681] [2023-08-04 06:17:34,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [811141681] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 06:17:34,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1939861909] [2023-08-04 06:17:34,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 06:17:34,524 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 06:17:34,525 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 06:17:34,526 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-04 06:17:34,527 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-08-04 06:17:34,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 06:17:34,608 INFO L262 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-04 06:17:34,610 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 06:17:34,626 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-04 06:17:34,626 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-04 06:17:34,638 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-04 06:17:34,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1939861909] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-04 06:17:34,639 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-04 06:17:34,639 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 5 [2023-08-04 06:17:34,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1868976016] [2023-08-04 06:17:34,639 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-04 06:17:34,640 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-04 06:17:34,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 06:17:34,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-04 06:17:34,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-04 06:17:34,656 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 124 out of 267 [2023-08-04 06:17:34,657 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 48 transitions, 160 flow. Second operand has 5 states, 5 states have (on average 127.4) internal successors, (637), 5 states have internal predecessors, (637), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 06:17:34,657 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 06:17:34,657 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 124 of 267 [2023-08-04 06:17:34,657 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 06:17:48,127 INFO L124 PetriNetUnfolderBase]: 128752/165253 cut-off events. [2023-08-04 06:17:48,128 INFO L125 PetriNetUnfolderBase]: For 10125/10125 co-relation queries the response was YES. [2023-08-04 06:17:48,546 INFO L83 FinitePrefix]: Finished finitePrefix Result has 337469 conditions, 165253 events. 128752/165253 cut-off events. For 10125/10125 co-relation queries the response was YES. Maximal size of possible extension queue 5773. Compared 997400 event pairs, 81922 based on Foata normal form. 36/148440 useless extension candidates. Maximal degree in co-relation 119377. Up to 158524 conditions per place. [2023-08-04 06:17:49,055 INFO L140 encePairwiseOnDemand]: 263/267 looper letters, 55 selfloop transitions, 3 changer transitions 1/67 dead transitions. [2023-08-04 06:17:49,055 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 67 transitions, 316 flow [2023-08-04 06:17:49,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-04 06:17:49,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-04 06:17:49,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 554 transitions. [2023-08-04 06:17:49,057 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5187265917602997 [2023-08-04 06:17:49,057 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 554 transitions. [2023-08-04 06:17:49,057 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 554 transitions. [2023-08-04 06:17:49,057 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 06:17:49,057 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 554 transitions. [2023-08-04 06:17:49,058 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 138.5) internal successors, (554), 4 states have internal predecessors, (554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 06:17:49,059 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 267.0) internal successors, (1335), 5 states have internal predecessors, (1335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 06:17:49,060 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 267.0) internal successors, (1335), 5 states have internal predecessors, (1335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 06:17:49,060 INFO L175 Difference]: Start difference. First operand has 69 places, 48 transitions, 160 flow. Second operand 4 states and 554 transitions. [2023-08-04 06:17:49,060 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 67 transitions, 316 flow [2023-08-04 06:17:49,067 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 67 transitions, 309 flow, removed 1 selfloop flow, removed 3 redundant places. [2023-08-04 06:17:49,068 INFO L231 Difference]: Finished difference. Result has 71 places, 48 transitions, 167 flow [2023-08-04 06:17:49,068 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=267, PETRI_DIFFERENCE_MINUEND_FLOW=153, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=167, PETRI_PLACES=71, PETRI_TRANSITIONS=48} [2023-08-04 06:17:49,068 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 13 predicate places. [2023-08-04 06:17:49,069 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 48 transitions, 167 flow [2023-08-04 06:17:49,069 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 127.4) internal successors, (637), 5 states have internal predecessors, (637), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 06:17:49,069 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 06:17:49,069 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 06:17:49,077 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-08-04 06:17:49,274 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 06:17:49,275 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting P2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P2Err0ASSERT_VIOLATIONERROR_FUNCTION, P2Err0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-08-04 06:17:49,275 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 06:17:49,275 INFO L85 PathProgramCache]: Analyzing trace with hash -1316974736, now seen corresponding path program 1 times [2023-08-04 06:17:49,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 06:17:49,275 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [784125987] [2023-08-04 06:17:49,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 06:17:49,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 06:17:49,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 06:17:49,408 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-08-04 06:17:49,409 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 06:17:49,409 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [784125987] [2023-08-04 06:17:49,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [784125987] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 06:17:49,409 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 06:17:49,409 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-04 06:17:49,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1060219406] [2023-08-04 06:17:49,409 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 06:17:49,409 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 06:17:49,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 06:17:49,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 06:17:49,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-04 06:17:49,411 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 267 [2023-08-04 06:17:49,412 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 48 transitions, 167 flow. Second operand has 3 states, 3 states have (on average 132.66666666666666) internal successors, (398), 3 states have internal predecessors, (398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 06:17:49,412 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 06:17:49,412 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 267 [2023-08-04 06:17:49,412 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 06:18:00,069 INFO L124 PetriNetUnfolderBase]: 110296/143773 cut-off events. [2023-08-04 06:18:00,069 INFO L125 PetriNetUnfolderBase]: For 10594/10594 co-relation queries the response was YES. [2023-08-04 06:18:00,463 INFO L83 FinitePrefix]: Finished finitePrefix Result has 291853 conditions, 143773 events. 110296/143773 cut-off events. For 10594/10594 co-relation queries the response was YES. Maximal size of possible extension queue 5182. Compared 896077 event pairs, 17560 based on Foata normal form. 0/132972 useless extension candidates. Maximal degree in co-relation 103244. Up to 127009 conditions per place. [2023-08-04 06:18:01,071 INFO L140 encePairwiseOnDemand]: 262/267 looper letters, 57 selfloop transitions, 3 changer transitions 0/68 dead transitions. [2023-08-04 06:18:01,072 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 68 transitions, 338 flow [2023-08-04 06:18:01,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 06:18:01,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 06:18:01,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 442 transitions. [2023-08-04 06:18:01,073 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5518102372034956 [2023-08-04 06:18:01,073 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 442 transitions. [2023-08-04 06:18:01,073 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 442 transitions. [2023-08-04 06:18:01,073 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 06:18:01,073 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 442 transitions. [2023-08-04 06:18:01,074 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 147.33333333333334) internal successors, (442), 3 states have internal predecessors, (442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 06:18:01,075 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 267.0) internal successors, (1068), 4 states have internal predecessors, (1068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 06:18:01,075 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 267.0) internal successors, (1068), 4 states have internal predecessors, (1068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 06:18:01,075 INFO L175 Difference]: Start difference. First operand has 71 places, 48 transitions, 167 flow. Second operand 3 states and 442 transitions. [2023-08-04 06:18:01,075 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 68 transitions, 338 flow [2023-08-04 06:18:01,080 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 68 transitions, 331 flow, removed 1 selfloop flow, removed 3 redundant places. [2023-08-04 06:18:01,081 INFO L231 Difference]: Finished difference. Result has 71 places, 50 transitions, 181 flow [2023-08-04 06:18:01,081 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=267, PETRI_DIFFERENCE_MINUEND_FLOW=160, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=181, PETRI_PLACES=71, PETRI_TRANSITIONS=50} [2023-08-04 06:18:01,081 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 13 predicate places. [2023-08-04 06:18:01,082 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 50 transitions, 181 flow [2023-08-04 06:18:01,082 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 132.66666666666666) internal successors, (398), 3 states have internal predecessors, (398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 06:18:01,082 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 06:18:01,082 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] [2023-08-04 06:18:01,082 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-04 06:18:01,082 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P2Err0ASSERT_VIOLATIONERROR_FUNCTION, P2Err0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-08-04 06:18:01,082 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 06:18:01,082 INFO L85 PathProgramCache]: Analyzing trace with hash -817106167, now seen corresponding path program 1 times [2023-08-04 06:18:01,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 06:18:01,083 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [106041623] [2023-08-04 06:18:01,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 06:18:01,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 06:18:01,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 06:18:01,131 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-08-04 06:18:01,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 06:18:01,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [106041623] [2023-08-04 06:18:01,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [106041623] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 06:18:01,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1392687182] [2023-08-04 06:18:01,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 06:18:01,132 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 06:18:01,132 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 06:18:01,134 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-04 06:18:01,147 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-08-04 06:18:01,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 06:18:01,233 INFO L262 TraceCheckSpWp]: Trace formula consists of 234 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-04 06:18:01,235 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 06:18:01,247 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-08-04 06:18:01,247 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-04 06:18:01,258 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-08-04 06:18:01,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1392687182] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-04 06:18:01,259 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-04 06:18:01,259 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 5 [2023-08-04 06:18:01,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641686411] [2023-08-04 06:18:01,259 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-04 06:18:01,259 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-04 06:18:01,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 06:18:01,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-04 06:18:01,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-04 06:18:01,271 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 124 out of 267 [2023-08-04 06:18:01,272 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 50 transitions, 181 flow. Second operand has 5 states, 5 states have (on average 128.2) internal successors, (641), 5 states have internal predecessors, (641), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 06:18:01,272 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 06:18:01,272 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 124 of 267 [2023-08-04 06:18:01,272 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 06:18:12,018 INFO L124 PetriNetUnfolderBase]: 102040/129325 cut-off events. [2023-08-04 06:18:12,019 INFO L125 PetriNetUnfolderBase]: For 13957/13957 co-relation queries the response was YES. [2023-08-04 06:18:12,388 INFO L83 FinitePrefix]: Finished finitePrefix Result has 283397 conditions, 129325 events. 102040/129325 cut-off events. For 13957/13957 co-relation queries the response was YES. Maximal size of possible extension queue 4787. Compared 745837 event pairs, 49000 based on Foata normal form. 576/120396 useless extension candidates. Maximal degree in co-relation 99913. Up to 86596 conditions per place. [2023-08-04 06:18:12,806 INFO L140 encePairwiseOnDemand]: 263/267 looper letters, 73 selfloop transitions, 4 changer transitions 0/85 dead transitions. [2023-08-04 06:18:12,807 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 85 transitions, 422 flow [2023-08-04 06:18:12,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-04 06:18:12,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-04 06:18:12,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 568 transitions. [2023-08-04 06:18:12,808 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5318352059925093 [2023-08-04 06:18:12,809 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 568 transitions. [2023-08-04 06:18:12,809 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 568 transitions. [2023-08-04 06:18:12,809 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 06:18:12,809 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 568 transitions. [2023-08-04 06:18:12,810 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 142.0) internal successors, (568), 4 states have internal predecessors, (568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 06:18:12,812 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 267.0) internal successors, (1335), 5 states have internal predecessors, (1335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 06:18:12,812 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 267.0) internal successors, (1335), 5 states have internal predecessors, (1335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 06:18:12,812 INFO L175 Difference]: Start difference. First operand has 71 places, 50 transitions, 181 flow. Second operand 4 states and 568 transitions. [2023-08-04 06:18:12,812 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 85 transitions, 422 flow [2023-08-04 06:18:12,817 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 85 transitions, 416 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-04 06:18:12,818 INFO L231 Difference]: Finished difference. Result has 75 places, 51 transitions, 198 flow [2023-08-04 06:18:12,818 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=267, PETRI_DIFFERENCE_MINUEND_FLOW=178, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=198, PETRI_PLACES=75, PETRI_TRANSITIONS=51} [2023-08-04 06:18:12,819 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 17 predicate places. [2023-08-04 06:18:12,819 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 51 transitions, 198 flow [2023-08-04 06:18:12,819 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 128.2) internal successors, (641), 5 states have internal predecessors, (641), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 06:18:12,819 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 06:18:12,819 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 06:18:12,827 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-08-04 06:18:13,027 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-08-04 06:18:13,028 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting P2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P2Err0ASSERT_VIOLATIONERROR_FUNCTION, P2Err0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-08-04 06:18:13,028 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 06:18:13,028 INFO L85 PathProgramCache]: Analyzing trace with hash 691198965, now seen corresponding path program 1 times [2023-08-04 06:18:13,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 06:18:13,028 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [678705641] [2023-08-04 06:18:13,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 06:18:13,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 06:18:13,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-04 06:18:13,053 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-04 06:18:13,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-04 06:18:13,086 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-04 06:18:13,086 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-04 06:18:13,087 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location P2Err0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2023-08-04 06:18:13,087 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 4 remaining) [2023-08-04 06:18:13,087 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P2Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 4 remaining) [2023-08-04 06:18:13,087 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P2Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 4 remaining) [2023-08-04 06:18:13,087 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-04 06:18:13,088 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 06:18:13,088 INFO L307 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was UNSAFE,UNKNOWN,UNKNOWN,UNKNOWN (1/2) [2023-08-04 06:18:13,089 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 2 thread instances [2023-08-04 06:18:13,089 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-04 06:18:13,155 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.08 06:18:13 BasicIcfg [2023-08-04 06:18:13,156 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-04 06:18:13,156 INFO L158 Benchmark]: Toolchain (without parser) took 141029.09ms. Allocated memory was 440.4MB in the beginning and 16.0GB in the end (delta: 15.6GB). Free memory was 401.9MB in the beginning and 12.6GB in the end (delta: -12.2GB). Peak memory consumption was 3.3GB. Max. memory is 16.0GB. [2023-08-04 06:18:13,156 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 343.9MB. Free memory is still 300.9MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-04 06:18:13,156 INFO L158 Benchmark]: CACSL2BoogieTranslator took 512.84ms. Allocated memory is still 440.4MB. Free memory was 401.3MB in the beginning and 378.4MB in the end (delta: 22.9MB). Peak memory consumption was 23.1MB. Max. memory is 16.0GB. [2023-08-04 06:18:13,157 INFO L158 Benchmark]: Boogie Procedure Inliner took 50.57ms. Allocated memory is still 440.4MB. Free memory was 378.4MB in the beginning and 376.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-04 06:18:13,157 INFO L158 Benchmark]: Boogie Preprocessor took 34.10ms. Allocated memory is still 440.4MB. Free memory was 376.3MB in the beginning and 374.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-04 06:18:13,157 INFO L158 Benchmark]: RCFGBuilder took 603.27ms. Allocated memory is still 440.4MB. Free memory was 374.2MB in the beginning and 342.3MB in the end (delta: 31.9MB). Peak memory consumption was 31.5MB. Max. memory is 16.0GB. [2023-08-04 06:18:13,157 INFO L158 Benchmark]: TraceAbstraction took 139823.34ms. Allocated memory was 440.4MB in the beginning and 16.0GB in the end (delta: 15.6GB). Free memory was 341.8MB in the beginning and 12.6GB in the end (delta: -12.3GB). Peak memory consumption was 3.3GB. Max. memory is 16.0GB. [2023-08-04 06:18:13,158 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 343.9MB. Free memory is still 300.9MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 512.84ms. Allocated memory is still 440.4MB. Free memory was 401.3MB in the beginning and 378.4MB in the end (delta: 22.9MB). Peak memory consumption was 23.1MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 50.57ms. Allocated memory is still 440.4MB. Free memory was 378.4MB in the beginning and 376.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 34.10ms. Allocated memory is still 440.4MB. Free memory was 376.3MB in the beginning and 374.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 603.27ms. Allocated memory is still 440.4MB. Free memory was 374.2MB in the beginning and 342.3MB in the end (delta: 31.9MB). Peak memory consumption was 31.5MB. Max. memory is 16.0GB. * TraceAbstraction took 139823.34ms. Allocated memory was 440.4MB in the beginning and 16.0GB in the end (delta: 15.6GB). Free memory was 341.8MB in the beginning and 12.6GB in the end (delta: -12.3GB). Peak memory consumption was 3.3GB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResultAtLocation [Line: 267]: Unsoundness Warning unspecified type, defaulting to int C: short [267] - GenericResultAtLocation [Line: 267]: Unsoundness Warning unspecified type, defaulting to int C: short [267] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3.3s, 127 PlacesBefore, 35 PlacesAfterwards, 125 TransitionsBefore, 29 TransitionsAfterwards, 2328 CoEnabledTransitionPairs, 7 FixpointIterations, 36 TrivialSequentialCompositions, 54 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 16 ConcurrentYvCompositions, 4 ChoiceCompositions, 110 TotalNumberOfCompositions, 5307 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2610, independent: 2458, independent conditional: 0, independent unconditional: 2458, dependent: 152, dependent conditional: 0, dependent unconditional: 152, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1246, independent: 1211, independent conditional: 0, independent unconditional: 1211, dependent: 35, dependent conditional: 0, dependent unconditional: 35, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 2610, independent: 1247, independent conditional: 0, independent unconditional: 1247, dependent: 117, dependent conditional: 0, dependent unconditional: 117, unknown: 1246, unknown conditional: 0, unknown unconditional: 1246] , Statistics on independence cache: Total cache size (in pairs): 102, Positive cache size: 90, Positive conditional cache size: 0, Positive unconditional cache size: 90, Negative cache size: 12, Negative conditional cache size: 0, Negative unconditional cache size: 12, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.7s, 103 PlacesBefore, 32 PlacesAfterwards, 98 TransitionsBefore, 25 TransitionsAfterwards, 1204 CoEnabledTransitionPairs, 6 FixpointIterations, 36 TrivialSequentialCompositions, 31 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 10 ConcurrentYvCompositions, 2 ChoiceCompositions, 79 TotalNumberOfCompositions, 2650 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1673, independent: 1574, independent conditional: 0, independent unconditional: 1574, dependent: 99, dependent conditional: 0, dependent unconditional: 99, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 630, independent: 617, independent conditional: 0, independent unconditional: 617, dependent: 13, dependent conditional: 0, dependent unconditional: 13, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1673, independent: 957, independent conditional: 0, independent unconditional: 957, dependent: 86, dependent conditional: 0, dependent unconditional: 86, unknown: 630, unknown conditional: 0, unknown unconditional: 630] , Statistics on independence cache: Total cache size (in pairs): 85, Positive cache size: 79, Positive conditional cache size: 0, Positive unconditional cache size: 79, Negative cache size: 6, Negative conditional cache size: 0, Negative unconditional cache size: 6, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3.3s, 156 PlacesBefore, 58 PlacesAfterwards, 148 TransitionsBefore, 46 TransitionsAfterwards, 5568 CoEnabledTransitionPairs, 7 FixpointIterations, 36 TrivialSequentialCompositions, 60 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 17 ConcurrentYvCompositions, 4 ChoiceCompositions, 117 TotalNumberOfCompositions, 15027 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 6268, independent: 6004, independent conditional: 0, independent unconditional: 6004, dependent: 264, dependent conditional: 0, dependent unconditional: 264, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 2905, independent: 2845, independent conditional: 0, independent unconditional: 2845, dependent: 60, dependent conditional: 0, dependent unconditional: 60, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 6268, independent: 3159, independent conditional: 0, independent unconditional: 3159, dependent: 204, dependent conditional: 0, dependent unconditional: 204, unknown: 2905, unknown conditional: 0, unknown unconditional: 2905] , Statistics on independence cache: Total cache size (in pairs): 265, Positive cache size: 240, Positive conditional cache size: 0, Positive unconditional cache size: 240, Negative cache size: 25, Negative conditional cache size: 0, Negative unconditional cache size: 25, 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; [L714] 0 _Bool main$tmp_guard0; [L715] 0 _Bool main$tmp_guard1; [L717] 0 int x = 0; [L719] 0 int y = 0; [L720] 0 _Bool y$flush_delayed; [L721] 0 int y$mem_tmp; [L722] 0 _Bool y$r_buff0_thd0; [L723] 0 _Bool y$r_buff0_thd1; [L724] 0 _Bool y$r_buff0_thd2; [L725] 0 _Bool y$r_buff0_thd3; [L726] 0 _Bool y$r_buff1_thd0; [L727] 0 _Bool y$r_buff1_thd1; [L728] 0 _Bool y$r_buff1_thd2; [L729] 0 _Bool y$r_buff1_thd3; [L730] 0 _Bool y$read_delayed; [L731] 0 int *y$read_delayed_var; [L732] 0 int y$w_buff0; [L733] 0 _Bool y$w_buff0_used; [L734] 0 int y$w_buff1; [L735] 0 _Bool y$w_buff1_used; [L737] 0 int z = 0; [L738] 0 _Bool weak$$choice0; [L739] 0 _Bool weak$$choice2; [L823] 0 pthread_t t1394[2]; [L824] 0 int asdf=0; VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p2_EAX=0, asdf=0, main$tmp_guard0=0, main$tmp_guard1=0, t1394={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] [L824] COND TRUE 0 asdf<2 [L824] FCALL, FORK 0 pthread_create(&t1394[asdf], ((void *)0), P0, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p2_EAX=0, arg={0:0}, asdf=0, main$tmp_guard0=0, main$tmp_guard1=0, pthread_create(&t1394[asdf], ((void *)0), P0, ((void *)0))=-6, t1394={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] [L824] 0 asdf++ VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p2_EAX=0, arg={0:0}, asdf=1, main$tmp_guard0=0, main$tmp_guard1=0, t1394={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] [L824] COND TRUE 0 asdf<2 [L824] FCALL, FORK 0 pthread_create(&t1394[asdf], ((void *)0), P0, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p2_EAX=0, arg={0:0}, asdf=1, main$tmp_guard0=0, main$tmp_guard1=0, pthread_create(&t1394[asdf], ((void *)0), P0, ((void *)0))=-5, t1394={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] [L824] 0 asdf++ VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p2_EAX=0, arg={0:0}, asdf=2, main$tmp_guard0=0, main$tmp_guard1=0, t1394={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] [L824] COND FALSE 0 !(asdf<2) [L825] 0 pthread_t t1395[2]; [L826] 0 int asdf=0; VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p2_EAX=0, arg={0:0}, asdf=0, asdf=2, main$tmp_guard0=0, main$tmp_guard1=0, t1394={5:0}, t1395={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] [L826] COND TRUE 0 asdf<2 [L826] FCALL, FORK 0 pthread_create(&t1395[asdf], ((void *)0), P1, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p2_EAX=0, arg={0:0}, arg={0:0}, asdf=0, asdf=2, main$tmp_guard0=0, main$tmp_guard1=0, pthread_create(&t1395[asdf], ((void *)0), P1, ((void *)0))=-4, t1394={5:0}, t1395={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] [L826] 0 asdf++ VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p2_EAX=0, arg={0:0}, arg={0:0}, asdf=1, asdf=2, main$tmp_guard0=0, main$tmp_guard1=0, t1394={5:0}, t1395={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] [L826] COND TRUE 0 asdf<2 [L826] FCALL, FORK 0 pthread_create(&t1395[asdf], ((void *)0), P1, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p2_EAX=0, arg={0:0}, arg={0:0}, asdf=1, asdf=2, main$tmp_guard0=0, main$tmp_guard1=0, pthread_create(&t1395[asdf], ((void *)0), P1, ((void *)0))=-3, t1394={5:0}, t1395={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] [L826] 0 asdf++ VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p2_EAX=0, arg={0:0}, arg={0:0}, asdf=2, asdf=2, main$tmp_guard0=0, main$tmp_guard1=0, t1394={5:0}, t1395={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] [L826] COND FALSE 0 !(asdf<2) [L827] 0 pthread_t t1396[2]; [L828] 0 int asdf=0; VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p2_EAX=0, arg={0:0}, arg={0:0}, asdf=0, asdf=2, asdf=2, main$tmp_guard0=0, main$tmp_guard1=0, t1394={5:0}, t1395={6:0}, t1396={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] [L828] COND TRUE 0 asdf<2 [L828] FCALL, FORK 0 pthread_create(&t1396[asdf], ((void *)0), P2, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p2_EAX=0, arg={0:0}, arg={0:0}, asdf=0, asdf=2, asdf=2, main$tmp_guard0=0, main$tmp_guard1=0, pthread_create(&t1396[asdf], ((void *)0), P2, ((void *)0))=-2, t1394={5:0}, t1395={6:0}, t1396={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] [L786] 5 y$w_buff1 = y$w_buff0 [L787] 5 y$w_buff0 = 1 [L788] 5 y$w_buff1_used = y$w_buff0_used [L789] 5 y$w_buff0_used = (_Bool)1 [L790] CALL 5 __VERIFIER_assert(!(y$w_buff1_used && y$w_buff0_used)) [L18] COND FALSE 5 !(!expression) [L790] RET 5 __VERIFIER_assert(!(y$w_buff1_used && y$w_buff0_used)) [L791] 5 y$r_buff1_thd0 = y$r_buff0_thd0 [L792] 5 y$r_buff1_thd1 = y$r_buff0_thd1 [L793] 5 y$r_buff1_thd2 = y$r_buff0_thd2 [L794] 5 y$r_buff1_thd3 = y$r_buff0_thd3 [L795] 5 y$r_buff0_thd3 = (_Bool)1 VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p2_EAX=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$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] [L828] 0 asdf++ VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p2_EAX=0, arg={0:0}, arg={0:0}, asdf=1, asdf=2, asdf=2, main$tmp_guard0=0, main$tmp_guard1=0, t1394={5:0}, t1395={6:0}, t1396={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] [L828] COND TRUE 0 asdf<2 [L828] FCALL, FORK 0 pthread_create(&t1396[asdf], ((void *)0), P2, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p2_EAX=0, arg={0:0}, arg={0:0}, asdf=1, asdf=2, asdf=2, main$tmp_guard0=0, main$tmp_guard1=0, pthread_create(&t1396[asdf], ((void *)0), P2, ((void *)0))=-1, t1394={5:0}, t1395={6:0}, t1396={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] [L786] 6 y$w_buff1 = y$w_buff0 [L787] 6 y$w_buff0 = 1 [L788] 6 y$w_buff1_used = y$w_buff0_used [L789] 6 y$w_buff0_used = (_Bool)1 [L790] 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, 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. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 146 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: 6.1s, OverallIterations: 4, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.6s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 78 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 48 mSDsluCounter, 2 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 12 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 208 IncrementalHoareTripleChecker+Invalid, 220 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 12 mSolverCounterUnsat, 2 mSDtfsCounter, 208 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 52 GetRequests, 40 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=83occurred in iteration=3, InterpolantAutomatonStates: 13, 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, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 72 NumberOfCodeBlocks, 72 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 76 ConstructedInterpolants, 0 QuantifiedInterpolants, 122 SizeOfPredicates, 0 NumberOfNonLiveVariables, 524 ConjunctsInSsa, 7 ConjunctsInUnsatCore, 8 InterpolantComputations, 3 PerfectInterpolantSequences, 7/12 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, 169 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: 130.7s, OverallIterations: 8, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 124.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.5s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 211 SdHoareTripleChecker+Valid, 0.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 156 mSDsluCounter, 15 SdHoareTripleChecker+Invalid, 0.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 26 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 722 IncrementalHoareTripleChecker+Invalid, 748 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 26 mSolverCounterUnsat, 15 mSDtfsCounter, 722 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 152 GetRequests, 129 SyntacticMatches, 6 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=198occurred in iteration=7, InterpolantAutomatonStates: 24, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 219 NumberOfCodeBlocks, 219 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 235 ConstructedInterpolants, 0 QuantifiedInterpolants, 393 SizeOfPredicates, 0 NumberOfNonLiveVariables, 975 ConjunctsInSsa, 13 ConjunctsInUnsatCore, 15 InterpolantComputations, 4 PerfectInterpolantSequences, 73/84 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - StatisticsResult: Ultimate Automizer benchmark data for thread instance sufficiency with 1 thread instances CFG has 7 procedures, 146 locations, 6 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 2.8s, OverallIterations: 1, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.7s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=65occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 6 NumberOfCodeBlocks, 6 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2023-08-04 06:18:13,181 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...